Accessory Dwelling Unit Permits - St. Petersburg

Housing and Building Standards Florida 3 Minutes Read · published February 09, 2026 Flag of Florida

In St. Petersburg, Florida, accessory dwelling units (ADUs) require review under local zoning and building rules before construction or conversion. This guide explains which city offices enforce ADU standards, how to apply for required permits, typical compliance checks, and where to find official forms and contact points for the City of St. Petersburg. Use this as a practical roadmap to plan, permit, and complete an ADU project in the city.

Confirm zoning and lot rules early - they determine whether an ADU is allowed.

Permit overview

ADUs are subject to both zoning approval and building permits. Zoning determines whether an ADU is allowed on a specific parcel, permitted unit size, setbacks, and occupancy rules. Building permits cover structural, electrical, plumbing, and mechanical work needed for habitability and safety. For city permit intake and technical requirements, contact the Building & Permitting office.[1]

Planning & zoning requirements

Before submitting construction plans, verify the property's zoning designation and any overlay districts or neighborhood-specific rules that affect ADU allowance, size, and use. The Planning division enforces zoning and can confirm whether a site requires variances or special exemptions.[2]

  • Check zoning district and lot coverage.
  • Confirm setback and height limits.
  • Determine whether separate utilities or addresses are required.

Penalties & Enforcement

Enforcement for unpermitted ADUs or violations is handled by the City’s Building & Permitting and Code Enforcement/Planning teams. Typical enforcement steps include notice, corrective orders, and civil penalties; refer to the cited official pages for procedural contacts and complaint submission.

  • Monetary fines: not specified on the cited page.[1]
  • Escalation: first, repeat, and continuing offence ranges not specified on the cited page.[1]
  • Non-monetary sanctions: stop-work orders, correction notices, and possible demolition or court action are applied where authorized; specifics not specified on the cited page.[1]
  • Enforcers and complaints: Building & Permitting for permit violations and Planning/Code Enforcement for zoning noncompliance; use the contact pages to file complaints or request inspections.[1]
If you are cited, act quickly to request inspections or file appeals within the city's stated timeframes.

Applications & Forms

Standard building permit applications and plan check submission instructions are issued by the Building & Permitting office; specific ADU application names or fee schedules are not listed verbatim on the general office pages and must be confirmed with the department.[1]

  • Common form: Building permit application (name and form number not specified on the cited page).[1]
  • Fees: plan review and permit fees are set by schedule; exact ADU fees are not specified on the cited page.[1]
  • Submission: contact the Building & Permitting office for electronic intake or in-person options; the department page shows contact and intake routes.[1]

How to apply and comply

Follow a stepwise approach: confirm zoning, prepare construction drawings to code, obtain building permits, schedule inspections during work, and secure final approval. Coordinate early with the Planning division if variances or conditional approvals may be required.[2]

  • Prepare plans stamped by a licensed design professional when required.
  • Submit full permit package to Building & Permitting.
  • Schedule required inspections during construction.
Incomplete plans delay review - include site plan and utility details.

FAQ

Do I always need a permit to build or convert an ADU?
Yes. Zoning approval and building permits are generally required for new ADUs or conversions that alter structure, systems, or occupancy; check with Building & Permitting and Planning for site-specific requirements.[1]
How long does permit review usually take?
Review times vary by scope and workload; specific standard timelines are not specified on the cited pages—contact the Building & Permitting office for current processing times.[1]
Can I rent my ADU short-term?
Rental and occupancy rules depend on zoning and city regulations; confirm allowable uses with Planning before operating a short-term rental.[2]

How-To

  1. Confirm property zoning and ADU allowance with Planning.
  2. Assemble site plan, floor plans, and any required engineering drawings.
  3. Submit building permit application and pay plan review fees as instructed by Building & Permitting.
  4. Complete required inspections and correct deficiencies found by inspectors.
  5. Obtain final approval and certificate of occupancy if applicable before renting or occupying.

Key Takeaways

  • Confirm zoning before design to avoid costly rework.
  • Permits cover both structural and MEP work—plan for inspections.
  • Contact Building & Permitting early to clarify forms, fees, and intake procedures.

Help and Support / Resources

  1. [1] City of St. Petersburg - Building & Permitting
  2. [2] City of St. Petersburg - Planning & Zoning

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