Staff outlines ‘site‑plan light’ changes to speed small infill housing; council questions drainage, thresholds

City staff on Tuesday briefed the Austin City Council on a proposal to streamline subdivision and site‑plan review for small infill housing, often called "site‑plan light" or residential infill, that would speed approval for projects of roughly 5 to 16 dwelling units and simplify subdivision of existing lots.

The proposal, presented by Assistant City Manager Veronica Briceno and Keith Myers, assistant director of the Development Services Department, aims to right‑size regulations and administrative processes for infill redevelopment, set a 90‑day target for permitting for eligible projects and change how the city evaluates drainage for smaller projects.

City staff said the changes are intended to match review and requirements to the scale of development, reduce construction costs for small projects and make the process easier for homeowners and smaller developers. "We believe we have a staff proposal that accomplishes a number of things," Myers said, including amendments to drainage rules and administrative procedures. Jorge Morales, director of the Watershed Protection Department, said the package includes both code changes and commitments to change administrative rules around stormwater connection, timing of drainage improvements and greater reliance on stamps and certifications by private engineers.

Why it matters: Staff estimates the recommended approach could reduce construction costs for small infill projects by as much as 30–40 percent and make nearly 80 percent of eligible single‑family lots more likely to use a simplified subdivision process. Council members raised repeated concerns about the risk of localized (lot‑to‑lot) flooding, the effect on the city’s regional stormwater fund and the fairness of sharp…