RL-01 Case Study Live Project

SB79 Impact Explorer

A case study in implementation geography: how a statewide housing mandate becomes spatially uneven through regional planning, local administrative choices, preservation frameworks, market feasibility, and existing vulnerability.

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Interface Studied

State housing mandate × regional implementation × local vulnerability

Primary Domain

Housing policy, land use, transit-oriented development

Methods

GIS, legislative analysis, demographic overlays, public data systems

Case Study Thesis

The law is statewide. The outcome is local.

SB79 creates a statewide transit-oriented housing framework, but its practical effects depend on where local governments phase, exempt, reinterpret, delay, preserve, permit, finance, and enforce implementation.

The Impact Explorer treats the statute as the first-order condition. The research question is what happens next: how implementation choices interact with the existing geography of renters, historic designations, environmental burden, transit access, development feasibility, and political capacity.

Research Question

How does a statewide housing mandate become spatially distributed across a metropolitan region?

Analytical Frame

Implementation geography: the study of where policy intent meets administrative practice, local constraint, and lived landscape.

Status

Live research system. The explorer is designed for spatial policy screening, implementation analysis, and public methods demonstration, not as a final legal determination of parcel eligibility or local compliance.

Outputs

Interactive implementation maps
Station-level data table
Redistribution pressure model
Compound Vulnerability Index
Methods and framework documentation

How to Read

From statute to spatial consequence.

Locate

Identify qualifying transit station areas and modeled TOD zones.

Overlay

Cross-reference vulnerability, renter share, opportunity, fire exposure, and historic-resource coverage.

Compare

Evaluate how constraints and implementation choices shift effective housing capacity across places.

Interpret

Read outputs as exposure indicators, not predictions of individual displacement or parcel-level outcomes.

Analytical Limits

Exposure is not prediction.

The project identifies spatial patterns and implementation risks. It does not predict developer behavior, parcel transactions, individual displacement, or final local compliance outcomes. Legal eligibility depends on parcel-level interpretation, adopted ordinances, and evolving administrative guidance.