Basement permit in Brentwood, TN

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

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	IRC R105.2
Based on	IRC 2018 as adopted by City of Brentwood (Sec. 14-66, Ord. No. 2018-14, as amended)

How to pull the permit

Put together a site plan showing where the work goes, with dimensions.
Apply through the Brentwood 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

Brentwood'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
Brentwood	—	Yes	No size threshold in the code
Nolensville	6 mi	Yes	No size threshold in the code
Franklin	7 mi	Yes	No size threshold in the code
La Vergne	12 mi	Yes	No size threshold in the code
Nashville	12 mi	Yes	No size threshold in the code
Smyrna	14 mi	Yes	No size threshold in the code

See every Tennessee city on basement work

Other work in Brentwood

Questions people ask

I already built it without a permit. What now?

Brentwood 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.