Metadata: BLI Model Development Capacity

BLI Model Development Capacity

Category Development
Feature Dataset Name STAND-ALONE
Item Name bli_dev_capacity_taxlots_bps
Database Type SDE
Originator City of Portland
Bureau Bureau of Planning and Sustainability
Publication Date 11/02/2009
Abstract The first step of the Bureau of Planning & Sustainability's Buildable Lands Inventory (BLI) model is used to identify parcels that are likely to redevelop in the City of Portland -- parcels that are either vacant or significantly underutilizing their allowed development capacity. FAR and building height limits are the primary limiting factor on development in employment, commercial, and high-density residential areas. In multi-family and single-family residential areas, capacities are determined by the allowed number of residential units.

This portion of the BLI modeling process consists of 3 basic steps:
1) calculate existing building square footages and allowed development limits (in terms of building square footage or number of residential units);
2) identify parcels using significantly less than their allowed development capacity (using less than 20% of available capacity, not including any development bonuses or incentives);
3) apply development constraints to these parcels and calculate remaining capacity in terms of building square footage, allowed number of residential units, and allowed number of jobs.

The attached graphics illustrate the process in more detail.

This featureclass is the result of that analysis. It is used to determine the total supply of residential and employment land, which is an input into subsequent steps of the BLI model, which allocates forecasted units and jobs to different areas of the City.
Purpose To quantify the existing development capacity within Portland under current and proposed land use regulations; to identify likely redevelopment scenarios and prospective clusters of future development activity by identifying sites that are significantly underutilizing their allowed development capacity; to generate development capacity statistics for different areas of the City to highlight the differences in terms of existing and allowed development capacity; and to serve as a basis for predicting residential and employment allocation based on regional growth forecasts.
Supplemental Information Complete documentation of the Bureau of Planning & Sustainability "Development Capacity GIS Model" is available upon request. The documentation explains in detail the inputs to the model, the methodology, and the GIS model results.
Last Dataset Update 01/07/2019 15:44
Last Source Update 01/07/2019 01:20
Maintenance/Update Frequency As needed
Extent Portland, Oregon
Data Type Vector
Shape Type Polygon
Feature Count 40170
Horizontal Position Accuracy Registered to tax lot base.
Horizontal Position Accuracy Link Taxlots
Progress Complete
North Bounding Coordinate 731452.3125
South Bounding Coordinate 650348.875
East Bounding Coordinate 7696783.5
West Bounding Coordinate 7604093
Theme Keyword(s) development, capacity, utilization
Theme Keyword Thesaurus None
Place Keyword(s) Portland, Oregon
Place Keyword Thesaurus None
Access Constraints Available for Public Use
Use Constraints These data are distributed under the terms of the City of Portland Data Distribution Policy. Care was taken in the creation of this data but it is provided "as is".

The City of Portland cannot accept any responsibility for errors, omissions, or positional accuracy.
Source Dataset Type File Geodatabase
Output Geodatabase EGH_PUBLIC.GDB
Distribution Grid: State plane coordinate system 1983(91).
Units: International feet
Datum: North American Datum of 1983/1991 (HPGN)
Liability: The information in this file was derived from digital databases on the City of Portland GIS. Care was taken in the creation of this file. The City cannot accept any responsibility for errors, omissions, or positional accuracy. There are no warranties, expressed or implied.
Format: Shapefile or File Geodatabase Feature Class - Data will be provided via City of Portland FTP Site.
Online Resource: http://portlandmaps.com/opendata
Online Instructions: City of Portland Public/Open Data is distributed via the PortlandMaps Open Data Site - http://portlandmaps.com/opendata. Data not available on the PortlandMaps Open Data site can be requested by contacting the City of Portland CGIS Group - maps@portlandoregon.gov
Transfer Size: varies
SPCS Zone Identifier: 5076
Contact(s)
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Kevin Martin
503 823-7710
503 823-7800
kevin.martin@portlandoregon.gov
1900 SW 4th Avenue, Suite #7100
Portland, OR 97201

City of Portland - BPS
503 823-7700
503 823-7800
bps@portlandoregon.gov
File(s)
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Images
52965.png 181.64Kb X
Lineage
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11/02/2009 The Development Capacity Analysis (DCA) GIS model consists of 3 basic steps: 1. calculate existing building square footages and allowed development limits (in terms of building square footage, number of units, or number of allowed lots); 2. identify “constrained” properties (i.e., significant environmental or historic resources); 3. identify development parcels significantly underutilizing their allowed development capacity (using less than 20% of available capacity, not including any development bonuses or incentives). Each of these steps is discussed in detail in the "Development Capacity Analysis GIS Model" report available from the City of Portland Bureau of Planning & Sustainability.
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Attribute Tables & Domains

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development_capacity_taxlots_pdx
Table Description
Table Jurisdiction
Column Sort Column Name Column Alias Column Type Column Size Domain Value(s) Column Description
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1 STATE_ID STATE_ID String 20
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The tax assessor state ID of the taxlot.
1 RNO RNO String 35
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The secondary tax assessor account number of the taxlot. From County Assessor records.
1 OWNER1 OWNER1 String 35
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The primary owner name (from County records).
1 SITEADDR SITEADDR String 37
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The street address of the taxlot.
1 PRPCD_DESC PRPCD_DESC String 50
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The Multnomah County "property code" for the taxlot. Property codes describe the predominant land use of the lot. Contact the Bureau of Planning & Sustainability for a list/description of all property codes.
1 IN_LRSBUFF IN_LRSBUFF String 5
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"True" indicates lots that are partially or completely within 1,000' of a light rail station.
1 SUBDIST SUBDIST String 50
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For lots within the Central City Plan District, the name of the Central City planning subdistrict.
1 GEN_USE GEN_USE String 30
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The generalized predominant land use of each taxlot. Less specific than the County Assessor "property codes". County Assessor property codes generalized into categories by the Bureau of Planning & Sustainability.
1 GEN_ZONE GEN_ZONE String 25
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The generalized comprehensive plan designation (CMP).
1 IS_VACANT IS_VACANT String 5
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"True" indicates the lot or portion of a lot is vacant. Parcels are identified as vacant by Metro in their regional vacant lands inventory, or the Bureau of Planning & Sustainability in their industrial/employment lands inventory.
1 MAP120 MAP120 String 1
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"Y" indicates an area is in a special "RH" or "IR" zone 4:1 FAR area (per code maps 120)
1 VALID_IL VALID_IL String 5
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"True" indicates that the lot has a "valid" improvement/land value ratio (land value is greater than $0 and -- if a building is located on a lot -- improvement value is greater than $0). Note that valid does not mean accurate.
1 IS_SFR_MFR IS_SFR_MFR String 5
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"True" indicates the lot is within a multi-family residential (MFR) zone and has been identified by the County Assessor as a SFR land use (meaning a single unit).
1 SIG_UNDERUT SIG_UNDERUT String 5
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Flag that indicates lots significantly underutilize allowed development capacity (all lots in this featureclass have a value of "True")
1 Geog_Spec Geog_Spec String 30
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The "employment geography" of the lot (per the BPS Employment Opportunities Analysis project)
1 conTranCap conTranCap String 5
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Transportation capacity constraint (refer to the attached table for a complete description of the mapping methodology for all constraints)
1 conTranInt conTranInt String 5
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ODOT highway interchanges constraint
1 conTranSub conTranSub String 5
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Substandard and unimproved streets constraint
1 conWater conWater String 5
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Water system constraints
1 conSewer conSewer String 5
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Sewer system constraints
1 conStorm conStorm String 5
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Stormwater system constraints
1 conAirHgt conAirHgt String 5
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Airport approach and departure cone constraint
1 conNoise conNoise String 5
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Airport noise constraint
1 conHeliprt conHeliprt String 5
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Heliport landing constraint
1 conView conView String 5
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Scenic view constraints
1 conHist conHist String 5
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Areas within a historic or conservation district
1 conPrvCom conPrvCom String 5
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Private common open space
1 conGW conGW String 5
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Willamette River greenway constraint
1 conSlp25 conSlp25 String 5
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Slopes over 25%
1 conNatAm conNatAm String 5
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Areas requiring archaeological scan or consultation with tribes
1 conLSHA conLSHA String 5
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Regulatory landslide hazard area constraint
1 conSLIDO conSLIDO String 5
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Landslide history constraint
1 conCovrly conCovrly String 5
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Environmental conservation (c) overlay constraint
1 conPovrly conPovrly String 5
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Environmental protection (p) overlay constraint
1 conFld100 conFld100 String 5
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FEMA 100-year floodplain constraint
1 conFldway conFldway String 5
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FEMA floodway constraint
1 conECSI conECSI String 5
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Brownfield constraint (from DOGAMI environmentally-contaminated site inventory)
1 conLUST conLUST String 5
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Leaking underground storage tank constraint
1 conHistLdm conHistLdm String 5
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Historic and conservation landmarks
1 conPubOwn conPubOwn String 5
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Publicly-owned properties that do not provide for employment or residential uses
1 conInstit conInstit String 5
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Institutional campuses constraint
1 conWetland conWetland String 5
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Wetlands constraint
1 NEW_LOT NEW_LOT String 5
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"True" indicates the polygon represents a portion of a lot that is vacant and is considered a likely new lot should development occur (and thus is assigned it's own unique LOT ID).
1 MKTVALYR3 MKTVALYR3 String 11
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The current-year "market" value of the taxlot. From County Assessor records.
1 INSTITUTE INSTITUTE String 5
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"True" indicates the lot is owned by a major institution (public/private university, hospital, etc.)
1 REG_ZONE REG_ZONE String 10
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A system of generalized jurisdictional zoning that groups relatively equivalent zones from different jurisdictions into a single classification. Used by Metroscope model.
1 IN_FTBUFF IN_FTBUFF String 5
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"True" indicates that the lot is within 500' of a "frequent service" transit line (bus or light rail). Frequent service is defined as transit that runs every 15 minutes or better during weekday peak hours.
1 TLID TLID String 25
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State ID in Multnomah County format
1 BLI_ACTION BLI_ACTION String 12
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Used to manually flag lots for addition or removal from the inventory of underutilized lots.
1 Size_Class Site Size Category String 30
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General size categories for the underutilized development site (the total area of the lot PLUS any adjacent underutilized lots)
1 Land_Class Underutilized Land Class String 15
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The underutilized land classification (vacant land, or redevelopment site where existing structures would be demolished or renovated)
1 NEWDESIG NEWDESIG String 12
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1 OBJECTID_1 OBJECTID_1 Numeric 8
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1 FARB_UNUSED FARB_UNUSED Numeric 8
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The amount of allowed FAR square footage (including bonuses) not currently being used by existing development on the lot or portion of a lot. Formula: [FARB_SQFT] - [EBLD_SQFT]
1 FARB_HEADHT FARB_HEADHT Numeric 8
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The height of the FAR envelope (including bonuses) that is not currently being used by existing development. Formula: [FARB_HGT] - [GBLD_HT]
1 FAR_UTIL FAR_UTIL Numeric 8
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The average "FAR Utilization Rate" of the property/zone. Derived from past development trends. Currently only used in the Central City.
1 MFRU_AFAR MFRU_AFAR Numeric 8
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Number of allowed multi-family units for the lot or portion of a lot in zones where development IS limited by FAR. Based on "base" FAR. Formula: [FAR_SQFT] / Estimated average MFR unit size.
1 MFRU_AFARB MFRU_AFARB Numeric 8
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Number of allowed multi-family units for the lot or portion of a lot in zones where development IS limited by FAR. Based on "bonus" FAR. Formula: [FARB_SQFT] / Estimated average MFR unit size.
1 MFRU_ATOT MFRU_ATOT Numeric 8
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Total estimated number of allowed multi-family units for the lot or portion of a lot. Based on "base" FAR where applicable. Formula: [MFRU_AFAR] + [MFRU_ALLOW].
1 MFRU_ATOTB MFRU_ATOTB Numeric 8
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Total estimated number of allowed multi-family units for the lot or portion of a lot. Based on "bonus" FAR where applicable. Formula: [MFRU_AFARB] + [MFRU_ALLOW].
1 INST_FAR INST_FAR Numeric 8
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Institutional FAR per master plan (for institutional campuses where master plans exist)
1 INST_SQFT INST_SQFT Numeric 8
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Total square footage of institutional capacity (where institutional master plans exist)
1 EMP_FAR EMP_FAR Numeric 8
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Employment capacity expressed as FAR (excludes industrial areas and institutions with master plans) [FAR_SQFTC / LOT AREA]
1 EMP_SQFT EMP_SQFT Numeric 8
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Total employment capacity in square feet (including institutional capacity, less industrial zones) [INST_SQFT + FAR_SQFTC]
1 NET_SFRL NET_SFRL Numeric 8
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The net capacity (allowed less existing) of potential single-family residential (SFR) lots for a lot or portion of a lot. Formula: [SFRL_ALLOW] - [SFRL_EXIST]. Must be summarized by "Lot ID" to get a total count by individual lot.
1 NET_MFRU NET_MFRU Numeric 8
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The net capacity (allowed less existing) of multi-family residential (MFR) units for a lot or portion of a lot. Formula: [MFRU_ALLOW] - [MFRU_EXIST]. Must be summarized by "Lot ID" to get a total unit count for an individual lot.
1 NET_MFRUB NET_MFRUB Numeric 8
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The net capacity (allowed less existing) of MFR units for a lot or portion of a lot under base + bonus FAR. Formula: [MFRU_ALLOW] - [MFRU_EXIST]. Must be summarized by "Lot ID" to get a total unit count for an individual lot.
1 NET_ALLOW NET_ALLOW Numeric 8
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Net residential unit capacity for each lot or portion of a lot (allowed - existing); based on allowed SFR lots, or total number of allowed MFR units under base FAR. Estimated using an average unit size for each comp plan zone. Weighted by lot area.
1 NET_ALLOWB NET_ALLOWB Numeric 8
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Net residential unit capacity for each lot or portion of a lot (allowed - existing); based on allowed SFR lots, or total number of allowed MFR units under base + bonus FAR. Estimated using average unit size by comp plan zone. Weighted by lot area.
1 MFRU_EXIST MFRU_EXIST Numeric 8
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Total number of estimated existing multi-family residential units on the lot or portion of a lot. Weighted by lot area. Formula: ([SHAPE_AREA] / [LOT_AREA]) X Total MFR units. Must be summarized by "Lot ID" to get a total count by individual lot.
1 MFRU_ALLOW MFRU_ALLOW Numeric 8
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Number of allowed multi-family units for the lot or portion of a lot in MFR zones where development IS NOT limited by FAR. Formula: [SHAPE_AREA] / Maximum MFR density of the zone. Truncated and rounded based on zoning code rules.
1 MFRU_RATIO MFRU_RATIO Numeric 8
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The ratio of existing MFR units to allowed MFR units. Formula: [MFRU_EXIST] / [MFRU_ALLOW]
1 MFRU_REM MFRU_REM Numeric 8
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The difference between the number of MFR units allowed and the number of existing units. Formula: [MFRU_ATOT] - [MFRU_EXIST]
1 OBJECTID OBJECTID Numeric 8
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A unique software ID for each polygon. May change when data is modified.
1 SFRL_EXIST SFRL_EXIST Numeric 8
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The number of existing single-family residential (SFR) lots weighted by lot area. Formula: ([SHAPE_AREA] / [LOT_AREA]) X 1. Must be summarized by "Lot ID" to get a total count by individual lot.
1 SFRL_ALLOW SFRL_ALLOW Numeric 8
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The number of allowed single-family residential (SFR) lots weighted by lot area. Formula: ([SHAPE_AREA] / [LOT_AREA]) X [SFR_LOTS]. Must be summarized by "Lot ID" to get a total count by individual lot.
1 EBLD_SQFTR EBLD_SQFTR Numeric 8
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Estimated existing building square footage devoted to residential use. Based on building permit history analysis of commercial/residential split by comp plan designation.
1 FAR_SQFTR FAR_SQFTR Numeric 8
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Estimated allowed building square footage devoted to residential use (under base FAR limits). Based on building permit history analysis of commercial/residential split by comp plan designation.
1 FARB_SQFTR FARB_SQFTR Numeric 8
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Estimated allowed building square footage devoted to residential use (under base + bonus FAR limits). Based on building permit history analysis of commercial/residential split by comp plan designation.
1 EXIST_UN EXIST_UN Numeric 8
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Total number of existing residential units for each lot or portion of a lot; based on existing SFR lots, or total number of existing MFR units (estimated using an average unit size for each comp plan zone). Weighted by lot area.
1 ALLOW_UN ALLOW_UN Numeric 8
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Total number of allowed residential units for each lot or portion of a lot; based on allowed SFR lots, or total number of allowed MFR units under base FAR (estimated using an average unit size for each comp plan zone). Weighted by lot area.
1 ALLOW_UNB ALLOW_UNB Numeric 8
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Total number of allowed residential units for each lot or portion of a lot; based on allowed SFR lots, or total number of allowed MFR units under base + bonus FAR (estimated using an average unit size for each comp plan zone). Weighted by lot area.
1 EBLD_SQFTC EBLD_SQFTC Numeric 8
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Estimated existing building square footage devoted to commercial use. Based on building permit history analysis of commercial/residential split by comp plan designation.
1 FAR_SQFTC FAR_SQFTC Numeric 8
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Estimated allowed building square footage devoted to commercial use (under base FAR limits). Based on building permit history analysis of commercial/residential split by comp plan designation.
1 FARB_SQFTC FARB_SQFTC Numeric 8
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Estimated allowed building square footage devoted to commercial use (under base + bonus FAR limits). Based on building permit history analysis of commercial/residential split by comp plan designation.
1 Rate_Res_Adj Rate_Res_Adj Numeric 4
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Adjusted residential capacity utilization rate factoring in effects of multiple constraints (3 or more constraints get an additional 20% deduction, 2 or more constraints an additional 10% deduction)
1 Rate_Emp_Adj Rate_Emp_Adj Numeric 4
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Adjusted employment capacity utilization rate factoring in effects of multiple constraints (3 or more constraints get an additional 20% deduction, 2 or more constraints an additional 10% deduction)
1 SFRL_CDED SFRL_CDED Numeric 4
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Net loss of SFR lot capacity due to constraints. Formula: [NET_SFRL] - [NET_SFRLC]
1 NET_SFRLC NET_SFRLC Numeric 4
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The net capacity (allowed less existing less constraint deduction) of potential single-family residential (SFR) lots for a lot or portion of a lot. Formula: [NET_SFRL] * [Rate_Res_Adj]. Must be summarized by "Lot ID" to get a total count by individual lot.
1 MFRU_CDED MFRU_CDED Numeric 4
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Net loss of MFR unit capacity due to constraints. Formula: [NET_MFRU] - [NET_MFRUC]
1 NET_MFRUC NET_MFRUC Numeric 4
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The net MFR capacity (allowed less existing less constraint deduction) of potential multifamily residential (MFR) units for a lot or portion of a lot. Formula: [NET_MFRU] * [Rate_Res_Adj]. Must be summarized by "Lot ID" to get a total count by individual lot.
1 NET_ALLOW_CDED NET_ALLOW_CDED Numeric 4
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Net loss of total unit (SFR & MFR) capacity due to constraints. Formula: [NET_ALLOW] - [NET_ALLOWC]
1 NET_ALLOWC NET_ALLOWC Numeric 4
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The net capacity (allowed less existing less constraint deduction) of potential residential (SFR and MFR) units for a lot or portion of a lot. Formula: [NET_ALLOW] * [Rate_Res_Adj]. Must be summarized by "Lot ID" to get a total count by individual lot.
1 ADJ_MARKET_FAR ADJ_MARKET_FAR Numeric 4
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A floor-area ratio (FAR) adjustment for employment areas that reflects known utilization of allowed FAR.
1 EMP_SQFTC EMP_SQFTC Numeric 4
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The net capacity (allowed less constraint deduction) of potential employment square footage for a lot or portion of a lot. Formula: [EMP_SQFT] * [Rate_Emp_Adj]. Must be summarized by "Lot ID" to get a total sum by individual lot.
1 EMP_FARC EMP_FARC Numeric 4
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Constrained employment capacity expressed as FAR (excludes industrial areas and institutions with master plans) Formula: [EMP_FAR] * [Rate_Emp_Adj]
1 EMP_SQFTMF EMP_SQFTMF Numeric 4
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The net capacity (allowed less constraint deduction) of potential employment square footage for a lot or portion of a lot, adjusted for market FAR utilization. Formula: If [EMP_FARC] > [EMP_FARMF], Lot Area * [EMP_FARMF], else [EMP_SQFTC]. Must be summarized by "Lot ID" to get a total sum by individual lot.
1 EMP_FARMF EMP_FARMF Numeric 4
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Constrained employment capacity expressed as FAR, adjusted for market FAR utilization(excludes industrial areas and institutions with master plans).
1 NET_EMP_SQFT NET_EMP_SQFT Numeric 4
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The net capacity (allowed less existing) of potential employment square footage for a lot or portion of a lot. Formula: [EMP_SQFT] - [EBLD_SQFT]. Must be summarized by "Lot ID" to get a total count by individual lot.
1 NET_EMP_SQFTC NET_EMP_SQFTC Numeric 4
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The net capacity (allowed less existing less constraint deduction) of potential employment square footage for a lot or portion of a lot. Formula: [NET_EMP_SQFT] * [Rate_Emp_Adj]. Must be summarized by "Lot ID" to get a total count by individual lot.
1 NET_EMP_SQFTMF NET_EMP_SQFTMF Numeric 4
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The net capacity (allowed less existing less constraint deduction) of potential employment square footage for a lot or portion of a lot, adjusted for market FAR utilization. Formula: [EMP_SQFTMF] - [EBLD_SQFT]. Must be summarized by "Lot ID" to get a total count by individual lot.
1 BLDG_SQFT_JOB BLDG_SQFT_JOB Numeric 4
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Average sqft per job assumption (based on comp plan designation)
1 NET_JOBS NET_JOBS Numeric 4
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The net capacity (allowed less existing) of potential jobs for a lot or portion of a lot. Formula: [NET_EMP_SQFT] / [BLDG_SQFT_JOB]. Must be summarized by "Lot ID" to get a total count by individual lot.
1 JOBS_CDED JOBS_CDED Numeric 4
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Net loss of job capacity due to constraints. Formula: [NET_JOBS] - [NET_JOBSC]
1 NET_JOBSC NET_JOBSC Numeric 4
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The net capacity (allowed less existing less constraint deduction) of potential jobs for a lot or portion of a lot. Formula: [NET_EMP_SQFTC] / [BLDG_SQFT_JOB]. Must be summarized by "Lot ID" to get a total count by individual lot.
1 JOBS_MFDED JOBS_MFDED Numeric 4
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Net loss of job capacity due to constraints and market FAR adjustment. Formula: [NET_JOBS] - [NET_JOBSMF]
1 NET_JOBSMF NET_JOBSMF Numeric 4
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The net capacity (allowed less existing less constraint deduction) of potential jobs for a lot or portion of a lot, adjusted fro market FAR utilization. Formula: [NET_EMP_SQFTMF] / [BLDG_SQFT_JOB]. Must be summarized by "Lot ID" to get a total count by individual lot.
1 Rate_Res Rate_Res Numeric 4
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Utilization rate for residential capacity, factoring in all individual constraints
1 Rate_Emp Rate_Emp Numeric 4
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Utilization rate for employment capacity, factoring in all individual constraints
1 TOTDEVAREA TOTDEVAREA Numeric 8
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For lots identified as "underutlized", the total area of the lot PLUS any adjacent underutilized lots (the total potential "site area" should the lots be developed simultaneously)
1 MAX_HEIGHT MAX_HEIGHT Numeric 8
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The maximum height limits for the lot (if applicable).
1 BLDFT_SQFT BLDFT_SQFT Numeric 8
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The building footprint square footage of the lot or portion of a lot. Derived from the City of Portland 3D building model.
1 BLD_MAXHGT BLD_MAXHGT Numeric 8
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The maximum building height of any existing buildings on the lot. Derived from the City of Portland 3D building model.
1 DEV_PERC DEV_PERC Numeric 8
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The percentage of surface area of each lot or portion of a lot that is developed (within an existing building footprint). Formula: [BLDFT_SQFT] / [SHAPE_AREA]
1 FAR_HGT FAR_HGT Numeric 8
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Estimated height of the FAR envelope for the lot or portion of a lot. Formula: [FARFLRS] X [FLOOR_HT]
1 FARB_HGT FARB_HGT Numeric 8
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Estimated height of the FAR envelope for the lot or portion of a lot (including any allowed bonuses). Formula: [FARBFLRS] X [FLOOR_HT]
1 FAR_SQFT FAR_SQFT Numeric 8
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For areas where development is limited by FAR, the total building square footage allowed on the lot or portion of a lot. Formula: [FARINT] X [SHAPE_AREA]
1 FARB_SQFT FARB_SQFT Numeric 8
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For areas where development is limited by FAR, the total building square footage allowed on the lot or portion of a lot (including any allowed bonuses). Formula: [FARBINT] X [SHAPE_AREA]
1 UNDEV_SQFT UNDEV_SQFT Numeric 8
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The square footage of the lot that is not currently developed as a building. Formula: [SHAPE_AREA] - [BLDFT_SQFT]
1 ABLD_SQFT ABLD_SQFT Numeric 8
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Assessor building square footage for the lot or portion of a lot. Weighted by lot area. Formula: ([SHAPE_AREA] / [LOT_AREA]) X Assessor building square footage
1 EBLD_SQFT EBLD_SQFT Numeric 8
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The existing building square footage; estimated from Portland 3D model. Derived from either known square footages, or estimated gross square footages when the square footage is not known. Refer to GIS model documentation for more info.
1 EBLD_FAR EBLD_FAR Numeric 8
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The estimate floor-area ratio (FAR) of any existing development. Estimated using the Portland 3D building model. Formula: [EBLD_SQFT] / [SHAPE_AREA]
1 GBLD_HGT GBLD_HGT Numeric 8
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The "generalized" building height for each lot or portion of a lot. Represents the height of the FAR envelope of any existing development on the lot. Formula: [EBLD_FAR] X [FLOOR_HT]
1 FAR_RATIO FAR_RATIO Numeric 8
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For areas where FAR limits development, the ratio of estimated existing building square footage to allowed FAR square footage. Formula: [EBLD_SQFT] / [FAR_SQFT]
1 FAR_UNUSED FAR_UNUSED Numeric 8
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The amount of allowed FAR square footage not currently being used by existing development on the lot or portion of a lot. Formula: [FAR_SQFT] - [EBLD_SQFT]
1 FARB_RATIO FARB_RATIO Numeric 8
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For areas where FAR limits development, the ratio of estimated existing building square footage to allowed FAR square footage (including bonuses). Formula: [EBLD_SQFT] / [FARB_SQFT]
1 FAR_HEADHT FAR_HEADHT Numeric 8
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The height of the FAR envelope that is not currently being used by existing development. Formula: [FAR_HGT] - [GBLD_HT]
1 HGT_RATIO HGT_RATIO Numeric 8
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X
The ratio of the allowed maximum building height to the existing maximum building height for the lot or portion of a lot. Formula: [BLD_MAXHGT] / [MAX_HEIGHT]
1 HGT_UNUSED HGT_UNUSED Numeric 8
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X
The amount of allowed maximum height not used by existing development. Formula: [MAX_HEIGHT] - [BLD_MAXHGT]
1 FARNUM FARNUM Numeric 4
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X
Where development is limited by floor-area ratio (FAR), the "base" floor-area ratio (FAR) of the lot or portion of a lot as a numeric attribute. A value of 6 therefore means 6:1.
1 FARBNUM FARBNUM Numeric 4
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X
Base + bonus floor-area ratio (FAR) of the lot or portion of a lot as a numeric attribute. A value of 8 therefore means 8:1.
1 LANDVAL3 LANDVAL3 Numeric 8
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X
The current-year land value of the taxlot. From County Assessor records.
1 BLDGVAL3 BLDGVAL3 Numeric 8
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X
The current-year value of any improvements (buildings) on the taxlot. From County Assessor records.
1 TOTALVAL3 TOTALVAL3 Numeric 8
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X
The total combined land and improvement value of the taxlot. From County Assessor records.
1 IL_RATIO IL_RATIO Numeric 8
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X
The improvement to land value ratio (I/L) for the lot. Based on the Multnomah County Assessor current year improvement and land values. Formula: where [LANDVAL3] > 0, [BLDGVAL3] / [LANDVAL3]
1 YEARBUILT YEARBUILT Integer 2
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X
The year of construction for any improvements on the lot. From County Assessor records.
1 FARFLRS FARFLRS Integer 4
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X
The number of floors in the FAR envelope.
1 FARBFLRS FARBFLRS Integer 4
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X
The number of floors in the bonus FAR envelope.
1 FLOOR_HT FLOOR_HT Integer 4
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X
The estimated floor-to-floor height of the building. Based on the building use as defined by the Assessor (GEN_USE).
1 SFR_LOTS SFR_LOTS Integer 2
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X
The total allowed number of single-family residential (SFR) lots for each lot within a SFR zone. Formula: [LOT_AREA] / maximum SFR density of the SFR zone. Truncated and rounded based on zoning code rules.
1 Numb_Const_Res Numb_Const_Res Integer 4
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X
Total number of residential constraints on the lot or portion of a lot
1 Numb_Const_Emp Numb_Const_Emp Integer 4
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X
Total number of employment constraints on the lot or portion of a lot
1 LOT_ID LOT_ID Integer 4
Add
X
A unique ID for each taxlot. Assigns IDs to portions of lots identified as vacant or manually identified as significantly "underutilized" (see the "Sig_Underut" attribute for more information).