Home Additions
Austin, TX · City rule · Reviewed 2026-09-28
A home addition requires residential plan review and building permits before construction.
Official source: Residential Plan ReviewSource checked 2026-09-28
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Your address can have zoning and mapped restrictions that affect a home project.
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More about this rule
The rule in plain language
Austin reviews new construction and additions for zoning and site limits as well as structural, energy, fire, and other technical codes. Trade permits and inspections normally follow for electrical, plumbing, or mechanical work.
Common follow-up questions
What should I do first?
Start with a survey and a concept plan showing the existing house, proposed footprint and height, property lines, trees, easements, and utilities.
What can change the answer?
The lot, zoning, overlays, trees, drainage, floodplain, structure, and utility scope all affect what can be approved.
What to keep in mind
Lot coverage, impervious cover, setbacks, compatibility, trees, drainage, floodplain, utilities, and deed restrictions may limit a design even when the building itself can meet code.
Official source
Residential Plan Review
City rule: City of Austin · retrieved-2026-09-26 · Source checked 2026-09-28 · Reviewed 2026-09-28
Civic education, not legal advice. Rules can change.
