Basement permit in Austin, TX

Yes вЂ” you need a permit for basement work in Austin.

The numbers
Permit needed?	Yes
Where the line falls	No size threshold in the code
Fee	Not in the ordinance — the department quotes it
Review time	Not in the ordinance
Code section	§25-12-243 R105.2
Based on	IRC 2024 as amended by Austin §25-12-243

How to pull the permit

Put together a site plan showing where the work goes, with dimensions.
Apply through the Austin building department.
Pay the permit fee when the permit is issued. Work done before that isn't covered.
Book each inspection listed on the permit as the job reaches that stage.

If you skip it

Austin's code doesn't set a specific fine for this work. In practice the department can issue a stop-work order, and unpermitted work tends to surface during a sale, when the buyer's inspector or the title company asks for it.

Already built it? How retroactive permits work

Nearby cities, same job

Rules stop at the city line. If your lot is near a boundary, or you work across several towns, this is where they differ.

City	Distance	Permit?	Where the line falls
Austin	—	Yes	No size threshold in the code
San Antonio	74 mi	Yes	No size threshold in the code
El Paso	524 mi	Yes	No size threshold in the code
Memphis	561 mi	Yes	No size threshold in the code
Germantown	569 mi	Yes	No size threshold in the code
Jackson	635 mi	Yes	No size threshold in the code

See every Texas city on basement work

Other work in Austin

Questions people ask

I already built it without a permit. What now?

Austin can issue a stop-work order and require you to apply after the fact, sometimes with an extra fee. Work that was covered up may have to be opened for inspection. Full walkthrough here.

Does unpermitted work cause problems when selling the house?

Often, yes. A buyer's inspector or the title company may flag it, and lenders can balk at financing a home with open or missing permits. What to do about it.