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Evaluating Infill Potential:
Identifying and Quantifying Infill Opportunity Sites
Infill Potential Methodology Project May 2004
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Our Presentation Today
I. Introduction to the Infill Methodology Project
II. The Geographical Screening Feature
III. Evaluating Infill Strategies
IV. Application and Next Steps
Infill Potential Methodology Project May 2004
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Project Participants
StateCaltrans / HCD
Non ProfitEnvironment Now
LocalCity of Los Angeles
County of Los AngelesConsultants:Terry Watt
Solimar Research
Infill Potential Methodology Project May 2004
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Grant
Grant funding provided by CaltransEnvironmental Justice Grant
Infill Potential Methodology Project May 2004
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Section I
Background
Infill Potential Methodology Project May 2004
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Develop a Tool That Will:
Identify infill parcels with potential for redevelopment
Estimate increased housing production through use of specific infill strategies
Compare different strategies to determine which provide more “bang for the buck”
Be utilized by cities, counties, and the development community and citizen groups
Infill Potential Methodology Project May 2004
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Project Goals
Develop a replicable tool that will analyze infill scenarios at parcel, neighborhood, and
city-wide scale evolve with changing circumstances support evaluation of public policies and programs utilize local and national government databases use ‘off-the-shelf’ GIS software
Infill Potential Methodology Project May 2004
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Data
Minimum data requirements Assessors information Zoning Land Use
Other useful data sets Census Infrastructure Building permits, etc. Aerial photos Other…
Infill Potential Methodology Project May 2004
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Section II
Geographic Screening
Infill Potential Methodology Project May 2004
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Focus on “Built/Capacity”
Units on the ground / some estimate zoning capacity
Central focus of infill methodology Helps planners identify good spots for infill Highlights areas where change can be
accommodated with little regulatory change Can be combined with other screens such as
land:improvement ratio and investments
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Example Screens Zoning Parcel Size Units on Ground Compared to Zoning Density Ratio of Improvement Value to Land Value Year Built Land Use Distance from Transit Other…
Infill Potential Methodology Project May 2004
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Infill Analysis Tool – Example West LA CPA
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Example Zoom to Parcel Level
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Query 1: Select Geography, West Los Angeles CPA
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Query 2: All Multiple Family Zoned Parcels
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Query 2: All Multiple Family Zoned Parcels - Zoom
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Query 3: Parcels Greater Than 7000 Square Feet in Size
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Query 4a: Existing Units Less the 50% Allowed by Zoning
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Query 5: Improvement to Land Value Ratio less that 0.9
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Query 6: De-Selection of Parcels by Hand - Before
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Query 6: De-Selection of Parcels by Hand - After
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173 Parcels Selected Through This Screen
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Zoom 1
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Zoom 2 and Identify
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Section III
Evaluating Infill Strategies
Infill Potential Methodology Project May 2004
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Strategy Development and Analysis
1. Define Strategy
2. Generate Assumptions
3. Geographic Screening
4. Map Results
5. Calculate Estimated Infill Potential
6. Evaluate and Revise
Infill Potential Methodology Project May 2004
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Generate Assumptions
Determine Density Increase Due to Strategy
Determine Absorption RateLocal Market Conditions Increase Due to Strategy Increase Due to Subsidy
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Strategy 1: 25% Density Bonus
“A 25% density bonus on selected multi-family zoned residential parcels”
Example Qualifying Parcel Criteria:Multiple family zoningOmit parcels with non residential, non
commercial uses ie: churchesExisting/Allowed units ratio less than 75% Improvement Ratio less than 0.9
Infill Potential Methodology Project May 2004
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Strategy 1 Geographic Screen
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Strategy 1: 25% Inclusionary Density Bonus
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Strategy 5: Transit Oriented District (TOD) “Significant density increase of all residential and
commercially zoned parcels within a given distance of a major transit hub. Height limits are removed and parking is reduced.”
Example Qualifying Parcel Criteria:All parcels within given distance of major
transit hubOmit parcels with non residential and non
commercial zoning
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Southeast LA CPA
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Query 1: Parcels within Southeast LA CPA
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Query 2: Parcels within ½ Mile of Transit Stop
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Query 2a: Parcels within ¼ Mile of Transit Stop
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Query 3: Parcels with Residential and Commercial Zoning
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Query 3: Parcels with Residential and Commercial Zoning - Zoom
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Strategy 3: Transit Oriented Development
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Benefits of This Tool
1. You can select any geography you want … and any parcel-based features you want.
2. You can “de-select” parcels by hand if you know they don’t “fit”.
3. You can test specific policy ideas and see how they will play out statistically and geographically.
4. You can make assumptions about market behavior and incorporate those.
Infill Potential Methodology Project May 2004
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Section IV
Application and Next Steps
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Potential Applications
Public SectorGeneral agency analysisHCD – Housing ElementsProactive planning – pre-approving good sites
for infill development Private Sector
Developers locating opportunity sites for development
Infill Potential Methodology Project May 2004
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Sample EJ Application
Layer parcel data onto larger-scale data (what we call “Infill Study Areas”)
See infill potential as it relates to socioeconomic conditions
Example: Multifamily v. second units in West L.A. Community Plan Area
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Next Steps
Solicit Feedback Document Project
Create “How To” Document Future Developments
Data Enhancements Customized User Interface Training and Technical Assistance Select another pilot jurisdiction Further validation and calibration Ability to identify parcels most likely to be redeveloped under a
given strategy
Infill Potential Methodology Project May 2004
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