Pinellas County ADU Rules 2026
Unincorporated County · Fees Waived · Tax Exemption Available
Unincorporated Pinellas County updated its ADU rules in July 2024 — development review fees are now waived, and a new multigenerational property tax exemption is available if you're housing a parent or grandparent. Here's the full 2026 guide with every zoning district's setback table.
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Pinellas County's July 2024 ADU update is one of the most homeowner-friendly in Florida: development review fees waived, a new multigenerational property tax exemption for parent/grandparent housing, and a clear 1,000 sq ft size limit with a complete zoning district table. This guide gives you every number you need.
This guide is for UNINCORPORATED Pinellas County only
St. Petersburg, Clearwater, Largo, Dunedin, Safety Harbor, Tarpon Springs and all other incorporated municipalities have their own separate zoning codes and ADU rules — this guide does NOT apply to them. Confirm your jurisdiction before using any data here.
Check your parcel at: new-pinellas-egis.opendata.arcgis.com or call BDRS at (727) 464-3888
Under Florida SB 184 (2025) and Pinellas County's Chapter 138, Section 138-3220 (July 2024 update), ADUs are permitted in all residential zoning districts. The county has specific, published standards — you don't need to guess. This guide has every number.
What Changed in July 2024 (Ch. 138, Sec. 138-3220)
In This Guide
- 1. ADU Rules at a Glance — Sec. 138-3220
- 2. Full Zoning District Setback Table
- 3. The 9-Step Permit Process (Fees Waived)
- 4. July 2024 Programs — Fee Waiver & Multigenerational Tax Exemption
- 5. Permit Fees & Timeline
- 6. Renting Your ADU — Gulf Coast Market
- 7. Common Pitfalls & How to Avoid Them
- 8. Key Contacts & Resources
- 9. Frequently Asked Questions
1. ADU Rules at a Glance — Sec. 138-3220
Authoritative source: Chapter 138, Section 138-3220
All Pinellas County unincorporated ADU rules are in Chapter 138, Section 138-3220 (updated July 2024). This guide reflects that code. For questions or current updates, contact BDRS at (727) 464-3888.
2. Full Zoning District Setback Table
The table below is derived from Chapter 138 and reflects the specific setback and dimensional standards for each residential zoning district in unincorporated Pinellas County. All ADUs must comply with the setbacks for their district. Verify your district code at new-pinellas-egis.opendata.arcgis.com.
| Zone | Min Lot Area | Min Width | Front | Side | Rear | Max Height | ADU |
|---|---|---|---|---|---|---|---|
| R-A | 2 acres | 90 ft | 25 ft | 15 ft | 20 ft | 35 ft | Yes |
| R-E | 32,000 sf | 90 ft | 25 ft | 15 ft | 20 ft | 35 ft | Yes |
| R-R | 16,000 sf | 90 ft | 25 ft | 10 ft | 15 ft | 35 ft | Yes |
| R-1 | 9,500 sf | 80 ft | 20 ft | 6 ft | 10 ft | 35 ft | Yes |
| R-2 | 7,500 sf | 70 ft | 20 ft | 6 ft | 10 ft | 35 ft | Yes |
| R-3 | 6,000 sf | 60 ft | 20 ft | 6 ft | 10 ft | 35 ft | Yes |
| RMH | 6,000 sf | 60 ft | 20 ft | 6 ft | 10 ft | 35 ft | Yes |
| R-4 | 5,000 sf (SF) | — | 20 ft | 6 ft | 10 ft | 35 ft | Yes |
| R-5 | 3,000 sf | — | 10 ft (20 ft garage) | 5 ft | 5 ft | 35–45 ft | Yes |
| RM | 3,000 sf | — | 10 ft (20 ft garage) | 5 ft | 5 ft | 35–50 ft | Yes |
| RPD | Per Dev. Master Plan | — | Per DMP | Per DMP | Per DMP | Per DMP | Contact BDRS |
Source: Pinellas County Chapter 138, Section 138-3220 (July 2024 update). All figures are from the county code. Verify current standards with BDRS at (727) 464-3888 before finalizing your design — code amendments may occur after publication of this guide.
RPD Zones — Contact BDRS Directly
RPD (Residential Planned Development) zones follow the applicable Development Master Plan, not the standard setback table. If your zoning shows RPD, call BDRS at (727) 464-3888 with your parcel ID for the specific DMP requirements that govern your property.
3. The 9-Step Permit Process (Fees Waived)
Submit all applications to Pinellas County Development Review Services (BDRS) at (727) 464-3888. Development review fees are waived as of July 2024 — building permit fees and trade permits still apply.
Verify Unincorporated Jurisdiction
Confirm your parcel is in unincorporated Pinellas County — not St. Pete, Clearwater, Largo, or another incorporated city. Use the EGIS map at new-pinellas-egis.opendata.arcgis.com or call BDRS at (727) 464-3888.
Look Up Your Zoning District on the EGIS Map
Go to new-pinellas-egis.opendata.arcgis.com or pinellas.gov/zoning-land-use. Note your district code (R-1, R-2, R-A, RPD, etc.) and reference the setback table in Section 2 of this guide. RPD zones: call BDRS directly.
Check Flood Zone — Determines 1,000 vs 750 sq ft Limit
Check your flood zone at msc.fema.gov. Properties in Coastal Storm Areas or FEMA Special Flood Hazard Areas are limited to 750 sq ft. All others: 1,000 sq ft maximum. Confirm with BDRS if your property boundary is near a flood zone line.
Hire a Florida-Licensed Architect
No pre-approved ADU plans are available. Hire a Florida-licensed architect familiar with Pinellas County standards. Brief them on: your district setbacks, your size limit (1,000 or 750 sq ft), the exterior match requirement, and the 10 ft separation requirement. Budget $3,000–$8,000+ for design.
Submit Application to BDRS — Development Review Fee Waived
Submit your ADU application to Pinellas County BDRS at (727) 464-3888. Development review fees are waived per the July 2024 update to Sec. 138-3220. Required documents: completed application, signed and sealed survey, site plan with setback dimensions, floor plans, building elevations, structural drawings, and energy compliance (RESCHECK).
Record Notice of Commencement (NOC)
Before construction begins, record a Notice of Commencement with the Pinellas County Clerk of the Circuit Court at pinellasclerk.org. Post a certified copy on-site throughout construction.
Plan Review and Permit Issuance
BDRS reviews for Chapter 138 zoning compliance and Florida Building Code compliance. Respond to review comments promptly. Building permit fees (based on construction valuation) are still assessed — only development review fees are waived.
Construction and Inspections
Build per approved plans. Pinellas County is a coastal county — Florida Building Code wind load requirements apply. Exterior finish and roof style must match the primary residence (inspector will verify). Maintain 10 ft separation from primary home.
Certificate of Occupancy + Consider Tax Exemption
After passing final inspection, Pinellas County issues a Certificate of Occupancy. If housing a parent or grandparent age 62+, immediately apply for the Multigenerational Tax Exemption at pcpao.gov or call (727) 464-3207. Establish a unit address and notify USPS.
4. July 2024 Programs — Fee Waiver & Multigenerational Tax Exemption
Development Review Fee Waiver
As of the July 2024 update to Section 138-3220, Pinellas County waives development review fees for ADU permit applications in unincorporated areas. This is not a pilot program or income-based incentive — it applies to all qualifying ADU applications.
Multigenerational Tax Exemption
New as of July 2024: If you build or renovate an ADU to house a parent or grandparent who is age 62 or older, you may qualify for a property tax reduction tied to the ADU's added value.
How the exemption is calculated
The exemption equals the lesser of:
- (a) The assessed value increase attributable to the ADU construction/renovation
- (b) 20% of the total assessed value of the property
Example: If your home is assessed at $400,000 and the ADU adds $80,000 in assessed value: lesser of $80,000 vs. 20% × $400,000 = $80,000 vs. $80,000 = $80,000 exemption applies. If the ADU added $100,000 but 20% of total ($480,000) = $96,000, then $96,000 is the cap. Always run your specific numbers with the Property Appraiser.
Owner-Occupancy Affordable Housing Exception
The standard owner-occupancy requirement (owner must live in primary or ADU) can be waived if:
Florida Private Provider Program (Expedited)
Hire a state-approved Private Provider firm to perform plan review and inspections, bypassing BDRS's review queue. This can reduce plan review time from weeks to days. Find registered providers at floridabuilding.org.
5. Permit Fees & Timeline
Estimated Fees
| Fee Type | Amount / Contact |
|---|---|
| Development Review Fee ✅ WAIVED | Waived as of July 2024 per Sec. 138-3220 — confirm with BDRS at (727) 464-3888 |
| Building Permit Fee | Based on construction valuation — contact BDRS at (727) 464-3888 for current schedule |
| Plan Review Fee | Assessed alongside building permit fee at submission |
| Trade Permits (electrical, plumbing, mechanical) | Pulled by licensed subcontractors — budget $300–$1,500+ per trade |
| Architect / Designer Fee | $3,000–$8,000+ — no pre-approved ADU plans available |
| Private Provider Fee (expedited) | Typically $1,500–$5,000 — significantly reduces review time |
| Duke Energy / TECO Utility Connection | Contact Duke Energy (800) 700-8744 or TECO (813) 223-0800 |
| Flood Elevation Certificate (if in flood zone) | $500–$1,500 — required for AE-zone properties by lenders/insurers |
Estimated Timeline
| Phase | Duration |
|---|---|
| Jurisdiction + zoning district verification | 1 week |
| Flood zone check + survey | 1–2 weeks |
| Design and plan preparation | 4–10 weeks |
| Application preparation | 1–2 weeks |
| BDRS plan review (standard) | 4–8 weeks (verify current queue) |
| Expedited via Private Provider | 1–2 weeks for plan review |
| Construction | 3–5 months depending on scope |
| Final inspection and CO | 1–2 weeks |
| Tax exemption application (if applicable) | After CO — before Property Appraiser annual deadline |
| Total — Standard path | 7–12 months |
| Total — Expedited (Private Provider) | 5–8 months |
6. Renting Your ADU — Gulf Coast Market
Unincorporated Pinellas County includes many desirable Gulf Coast communities — Safety Harbor, Seminole, Pinellas Park, parts of North Redington Beach, and other unincorporated areas adjacent to Tampa Bay and the Gulf. Rental demand is strong year-round, driven by healthcare, technology, hospitality, and retirees.
Long-Term Rental Market
| Studio ADU Estimate | $1,200–$1,500/month (2025–2026 Pinellas County market) |
| 1-Bedroom ADU Estimate | $1,400–$1,900/month |
| Key Demand Drivers | BayCare Health System, St. Joseph's/BayCare hospitals, tech migration to Tampa Bay metro, Johns Hopkins All Children's Hospital, retirees, Gulf Coast lifestyle workers |
| Vacancy Risk | Low — Pinellas Peninsula geography limits supply growth; strong employer base |
| Premium Zones | Waterfront-adjacent unincorporated areas, Safety Harbor, communities near Clearwater/Dunedin border command premium rents |
| Market Character | Year-round demand; more stable than pure tourist markets; professional and retiree tenant mix |
Short-Term Rentals (Airbnb / VRBO)
Verify Current STR Rules — 30-Day Minimum in Residential Zones
Unincorporated Pinellas County has a 30-day minimum rental requirement in residential zones. Before building any STR strategy into your ADU plans, verify the current rules for your specific district with BDRS at (727) 464-3888. STR regulations are an active policy area across Florida.
| County STR Policy | 30-day minimum in residential zones — verify current enforcement for your district |
| State DBPR License | All Florida STRs require a Vacation Rental Dwelling license — myfloridalicense.com |
| Pinellas County TDT | Tourist Development Tax applies to qualifying short-term stays — pinellascounty.org/taxcoll |
| Florida State Sales Tax | 6% state sales tax on stays 6 months or less — floridarevenue.com |
7. Common Pitfalls & How to Avoid Them
Applying Pinellas County rules to an incorporated city property
This is the most common mistake. St. Pete, Clearwater, Largo, and all other incorporated cities have their own zoning codes. If your property is in any of these cities, Chapter 138 does not apply. Verify your jurisdiction at new-pinellas-egis.opendata.arcgis.com or by calling BDRS at (727) 464-3888.
Not checking flood zone before designing to 1,000 sq ft
Properties in Coastal Storm Areas or FEMA flood hazard areas are limited to 750 sq ft, not 1,000 sq ft. If you design to 1,000 sq ft before checking your flood zone, you may have to redo the design. Check msc.fema.gov first.
Designing the ADU exterior to look different from the primary home
Section 138-3220 requires the ADU to match the primary residence's exterior finish materials AND roof style. This is a code requirement inspectors will enforce. Give your architect the existing home's finish and roof style specifications before design begins.
Counting garage/storage separately from the 1,000 sq ft limit
Garages and storage spaces serving the ADU count toward the size limit under Sec. 138-3220. If you add a 150 sq ft storage room to an 850 sq ft ADU, you're at the limit — not over it. But if you design a 1,000 sq ft ADU plus a detached garage, you exceed it. Plan accordingly.
Missing the multigenerational tax exemption
If you're housing a parent or grandparent age 62+, the Pinellas County Multigenerational Tax Exemption can reduce your property taxes significantly. Many homeowners build the ADU without knowing about this. Apply at pcpao.gov after the CO is issued — before the Property Appraiser's annual exemption deadline.
Not verifying the 10 ft separation requirement during design
A minimum 10 ft separation between the ADU and the primary home is required. This is not a setback from the property line — it's a gap between the two structures. Confirm this is achievable on your lot before finalizing the design footprint.
Assuming the fee waiver covers all fees
Development review fees are waived — not building permit fees or trade permit fees. These are separate and still apply. Budget for them accordingly.
HOA restrictions
County permits do not override HOA covenants. Some unincorporated Pinellas communities have HOAs that restrict ADUs or rental use. Review your CC&Rs before committing to plans.
8. Key Contacts & Resources
BDRS — Development Review Services
(727) 464-3888
Pinellas County Zoning (LDC)
pinellas.gov/zoning-land-useEGIS Zoning Map
new-pinellas-egis.opendata.arcgis.comPinellas County Property Appraiser (PCPAO)
pcpao.gov | (727) 464-3207Multigenerational Tax Exemption
Apply at pcpao.gov after COPinellas County Clerk (NOC recording)
pinellasclerk.orgChapter 138, Sec. 138-3220 (Municode)
library.municode.com/fl/pinellas_countyFEMA Flood Map Service Center
msc.fema.govPinellas County Tax Collector (TDT)
pinellascounty.org/taxcollFlorida Building Code / Private Providers
floridabuilding.orgFL DBPR Vacation Rental License
myfloridalicense.comDuke Energy (utility connection)
(800) 700-8744 | duke-energy.comFlorida Bar Lawyer Referral
(800) 342-8011 | floridabar.org9. Frequently Asked Questions
What is the maximum ADU size in unincorporated Pinellas County?
Standard maximum: 1,000 sq ft under Chapter 138, Section 138-3220 (updated July 2024). Properties in Coastal Storm Areas or FEMA Special Flood Hazard Areas: 750 sq ft. Garages and storage spaces serving the ADU count toward the size limit. Check your flood zone at msc.fema.gov.
Are development review fees waived for ADUs in Pinellas County?
Yes. As of the July 2024 update to Section 138-3220, development review fees for ADU applications are waived in unincorporated Pinellas County. Building permit fees and trade permit fees still apply. Confirm current fee waiver status with BDRS at (727) 464-3888.
What is the Pinellas County multigenerational tax exemption for ADUs?
Introduced July 2024: if you build or renovate an ADU to house a parent or grandparent age 62+, you may qualify for a property tax reduction equal to the lesser of (a) the assessed value increase from the ADU, or (b) 20% of total assessed value. Apply at pcpao.gov or call (727) 464-3207.
Does Pinellas County require owner occupancy for an ADU?
Standard rule: yes, owner must occupy primary home or ADU (verified via Homestead Exemption at pcpao.gov). Exception: waived if both units rented at ≤80% AMI with a 20-year Land Use Restrictive Agreement. Contact BDRS at (727) 464-3888 for details on the affordable housing exception.
What are the parking requirements for a Pinellas County ADU?
ADUs under 750 sq ft: off-street parking is waivable. ADUs 750 sq ft or larger: at least 1 off-street parking space required. Confirm with BDRS at (727) 464-3888.
Do St. Pete, Clearwater, and Largo follow the same Pinellas County ADU rules?
No. This guide applies ONLY to unincorporated Pinellas County. St. Petersburg, Clearwater, Largo, Dunedin, and all other incorporated municipalities have separate zoning codes. Verify your jurisdiction at new-pinellas-egis.opendata.arcgis.com or by calling BDRS at (727) 464-3888.
What does "ADU must match exterior finish and roof style" mean?
Section 138-3220 requires the ADU's exterior finish materials and roof style to match the primary residence. If your main house has stucco siding and a hip roof, the ADU must use stucco and the same hip roof style. This is a code requirement enforced during building inspection.
Important Disclaimers
- This guide applies ONLY to unincorporated Pinellas County under Chapter 138. St. Petersburg, Clearwater, Largo, and all other incorporated municipalities have separate rules not covered here.
- This guide reflects Chapter 138, Section 138-3220 as updated July 2024. Code provisions can change — always verify current requirements with BDRS at (727) 464-3888 before making financial commitments.
- Development review fee waiver status should be confirmed with BDRS before submission — administrative policies can change.
- The Multigenerational Tax Exemption requires a qualifying relative (parent/grandparent, age 62+) and Homestead Exemption status — confirm eligibility with the Pinellas County Property Appraiser at (727) 464-3207 before budgeting for this benefit.
- Flood zone designations are subject to FEMA map revisions — verify your current designation at msc.fema.gov.
- Florida SB 184 (2025) provides state-level ADU rights — if a compliant application is denied, consult a Florida land use attorney about state preemption options.
- HOA covenants are independent of county permits — check CC&Rs before proceeding.
- This guide does not constitute legal, tax, or financial advice. Prepared March 2026 | Updated June 2026.
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Also see: Pinellas County ADU Rules · ADU Costs in Florida · Florida ADU Laws 2025