ST. PETERSBURG · ADU BUILDER · 2026

ADUs in St. Petersburg — rules, costs, and what to expect.

St. Petersburg expanded its ADU ordinance in 2023 to broaden where backyard cottages are permitted as-of-right. Combined with strong rental demand and no owner-occupancy requirement, St. Pete is one of the best Florida markets for a Tooly investor.

MAX ADU SIZE
800 sq ft
Tooly is 264
TYPICAL RENT
$1,450–$1,750
long-term, furnished
PERMIT TIMELINE
6–10 weeks
City of St. Petersburg
ST. PETE RULES

What the 2023 ordinance update allows.

The City of St. Petersburg permits ADUs in all single-family residential districts under its updated 2023 ordinance. The framework is one of the most investor-friendly in Florida:

Pinellas County unincorporated areas have a separate but similar ordinance. If your address is outside St. Pete city limits, refer to Pinellas County Build & Develop.
THE NUMBERS

What a Tooly costs in St. Petersburg, all-in.

Tooly unit (delivered, furnished, finished)$85,000
St. Pete building permit + impact fees$2,500 – $5,200
Foundation + site prep$9,500 – $17,500
Utility tie-ins$5,000 – $12,000
Total installed cost$102,000 – $119,700

St. Petersburg rental economics

Furnished 1-bedroom rents in St. Pete's core neighborhoods (Old Northeast, Historic Kenwood, Crescent Heights, Grand Central) sit at $1,450–$1,750/month. Downtown and beach-adjacent areas push past $1,900. Lack of owner-occupancy makes this an ideal pure investor market.

PERMIT PROCESS

How to get an ADU permit in St. Petersburg.

  1. Zoning verification — confirm ADU eligibility via the St. Petersburg Development Services portal.
  2. Building permit application — Tooly provides the package.
  3. Plan review — typically 3–5 weeks.
  4. Permit issuance — construction begins.
  5. Inspections + CO — standard FBC.

Realistic timeline from contract to move-in: 13–17 weeks.

St. Pete is set up for investors.

No owner-occupancy rule, strong rents, fast permits. Tell us your address.

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