Locate
Identify qualifying transit station areas and modeled TOD zones.
SB79 Impact Explorer
A case study in implementation geography: mapping how a statewide housing mandate becomes spatially uneven through local administrative choices, historic constraints, and existing vulnerability.
The Problem
The law is statewide, but the outcome is local.
California Senate Bill 79 creates a statewide transit-oriented housing framework. However, its practical effects depend entirely on where local governments choose to phase, exempt, preserve, permit, and enforce implementation.
The research question is not just what the statute says, but what happens next: how do local implementation choices interact with the existing geography of renters, environmental burdens, and development feasibility?
The Solution & Methodology
A live spatial policy screening system.
The Impact Explorer treats the statute as the first-order condition and overlays local constraints to model redistribution pressure. The methodology follows a clear pipeline:
Overlay
Cross-reference spatial data on vulnerability, renter share, fire exposure, and historic-resource coverage.
Compare
Evaluate how constraints and implementation choices shift effective housing capacity across different jurisdictions.
Analytical Limits
Exposure is not prediction.
The system identifies spatial patterns and implementation risks; it does not predict developer behavior, individual displacement, or final local compliance outcomes. It is built for policy screening and methods demonstration.