St. Petersburg adu construction pricing per square foot
ADU Construction cost per square foot in St. Petersburg, Florida in 2026.
Low
$156,000
Average
$234,000
High
$312,000
St. Petersburg crews quote about $260 – $520 per square foot.
Multiply local unit rates by your real measurements.
What drives adu construction prices in St. Petersburg
Local labor, permitting and climate move St. Petersburg prices away from the national average.
Labor market
St. Pete crews price with the Tampa Bay market.
Permits
City permits with coastal and flood-zone review.
Climate
Salt air and storm surge affect siding, roofing and fencing.
St. Petersburg unit pricing by material
Ways to lower your St. Petersburg price
- Use pre-approved ADU plans where your city offers them — saves months and design fees.
- Detach only if required; attached and conversion ADUs cost far less.
- Collect three written bids on an identical scope — spreads of 20–40% are normal.
- Book in the off-season and stay flexible on the start date to save 5–15%.
- Bundle nearby work into one mobilization so you only pay setup and travel once.
- Ask what the contractor would change to cut 10% without hurting durability.
St. Petersburg questions
People also search: adu construction cost St. Petersburg · adu construction near me St. Petersburg · adu construction price per square foot St. Petersburg · adu construction permit cost St. Petersburg
Price my project in St. Petersburg
Answer a few questions and we'll model a low, average and premium price for your zip code — then match you with accredited local pros.
Price my project