Accessory dwelling unit permit — Nashville-Davidson metropolitan government (balance), TN

Last updated: September 24, 2026

What affects the price

Building an ADU involves variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.

About this service

An accessory dwelling unit permit is the mandatory paperwork required by your city to authorize the construction of a secondary living space. You must secure this if you want to avoid fines and ensure your property remains compliant with local planning departments. Costs for the permitting process vary significantly based on your local municipality’s fee schedule and plan review requirements. Exact pricing confirmed free on the call.

Frequently asked in Nashville-Davidson metropolitan government (balance)

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More on this: HUD ADU resources — ADU policy and financing research.

Service area details

Serving all of Nashville-Davidson metropolitan government (balance) — population 687,788.

Neighborhoods served in Nashville-Davidson metropolitan government (balance): The Gulch, East Nashville, 12 South, Germantown, Melrose, Green Hills — and every surrounding area.