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Layer: BLI Model Development Capacity (ID: 90)

Parent Layer: Planning & Development

Name: BLI Model Development Capacity

Display Field: STATE_ID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: 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. --Additional Information: Category: Development 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. Update Frequency: As Needed -- Metadata Link:

Copyright Text: Bureau of Planning and Sustainability

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