ADU Rules & Zoning in Palm Bay, Florida (2026)
What ADU can you build in your Palm Bay backyard?
Instantly check eligibility for Accessory Dwelling Units (ADUs), like Guest Houses, Garage Conversions, and In-Law Suites.
Key Takeaways: Palm Bay ADU Rules 2026
- Maximum ADU size is 800 sq ft OR 50% of primary dwelling's air-conditioned living area — whichever is smaller
- Owner-occupancy required — must live in primary home or ADU (owner-occupancy affidavit required at permit)
- PUD zone properties NOT eligible unless specific PUD ordinance explicitly authorizes ADUs
- Required setbacks: 20 ft front, 6 ft side, 10 ft rear — maximum height 25 ft
- Metal ADU structures over 300 sq ft must be textured or painted to simulate non-metal construction
- No citywide short-term rental ban — STR requires state DBPR license and Brevard County Tourist Development Tax
- Brevard County impact fees add $5,000–$10,000+ to project cost on top of Palm Bay city permit fees
ADUs are NOT Permitted In:
- PUD (Planned Unit Development) zones — ADUs not permitted unless the specific PUD ordinance explicitly authorizes them
Palm Bay 2026 ADU Requirements Snapshot
Best-available synthesis from archived original guide (Mar 2026 extract). Confirm latest LDC revisions, PUD-specific constraints, and flood/utility conditions before final design.
ADU Size Calculator (50% formula, 800 sq ft cap)
| Primary Home Size | Max ADU Size |
|---|---|
| 1,200 sq ft | 600 sq ft |
| 1,800 sq ft | 800 sq ft |
| 1,600 sq ft (cap triggers) | 800 sq ft (max) |
Whichever is smaller: 50% of primary OR 800 sq ft hard cap. Percentage applies to air-conditioned living area only, not gross floor area
What this means for your lot
- Use the address checker first to verify parcel-specific zoning.
- Confirm setbacks and lot geometry before spending on plans.
- Check short-term rental rules carefully — they vary significantly by city.
Key gotchas
- PUD zone ADUs prohibited unless PUD ordinance specifically authorizes — most common eligibility mistake
- Miscalculating the 50% size cap using total sq ft instead of air-conditioned living area
- Forgetting Brevard County impact fees add $5,000–$10,000+ to project cost separate from city permit fees
Building Limits
- Max Size:800 sq ft or 50% (lesser)
- Setbacks:20ft front / 6ft side / 10ft rear
- Detached Allowed?Yes
- Max Height:25 ft
- Build Cost Est.:$80,000–$200,000+
Rental Rules
Owner-Occupancy Required: You must live in either the primary home or the ADU.
Short-Term Rentals: Not prohibited at the city level. State DBPR license required.
Estimated Monthly Income
$950–$1,750/month
Based on 2025–2026 Palm Bay market data
Palm Bay ADU Permit Cost Breakdown
| Cost Item | Amount / Notes |
|---|---|
| Total Estimated Cost | $3,000–$8,000 city fees + $5,000–$10,000+ Brevard County impact fees |
| Building Permit Fee | Based on construction valuation — contact (321) 733-3042 |
| Plan Review | Included in permit fee |
| Impact Fees | Brevard County school: ~$4,000–$7,000; transportation varies — separate from Palm Bay city fees |
| Owner-Occupancy Affidavit | Owner-occupancy affidavit required at permit submission (no separate fee but required documentation) |
Key ADU Restrictions in Palm Bay
- ADU max 800 sq ft OR 50% of primary dwelling living area, whichever is less
- Owner must reside in either primary home or ADU — owner-occupancy affidavit required
- Metal ADU structures over 300 sq ft must be textured or painted to simulate non-metal construction
Common Mistakes to Avoid in Palm Bay
- PUD zone ADUs prohibited unless PUD ordinance specifically authorizes — most common eligibility mistake
- Miscalculating the 50% size cap using total sq ft instead of air-conditioned living area
- Forgetting Brevard County impact fees add $5,000–$10,000+ to project cost separate from city permit fees
Eligible Zones in Palm Bay
Palm Bay ADU — Frequently Asked Questions
Can I build an ADU in Palm Bay?
Yes, if your property is in an RR, RE, RS-1, RS-2, or RS-3 zoning district on a lot of at least 6,000 sq ft. PUD-zoned properties are not eligible unless the specific PUD ordinance expressly authorizes ADUs — the most common eligibility mistake. Confirm with Palm Bay Growth Management at (321) 733-3042 before committing to plans.
What is the maximum ADU size in Palm Bay?
800 sq ft OR 50% of the primary dwelling's air-conditioned living area — whichever is smaller. On a 1,400 sq ft primary home, your cap is 700 sq ft (50%). On a 1,800 sq ft or larger home, your cap is 800 sq ft (the hard ceiling). Use the recorded air-conditioned living area — not gross floor area — for the calculation.
Do I need to live on the property to build or rent an ADU in Palm Bay?
Yes. Palm Bay requires owner-occupancy — you must live in either the primary home or the ADU. An owner-occupancy affidavit is required as part of the permit application process.
Can I use my Palm Bay ADU as an Airbnb?
Palm Bay has no citywide STR ban, so short-term rentals are not prohibited at the city level. You must obtain a Florida DBPR Vacation Rental Dwelling license (myfloridalicense.com) and collect Brevard County's 5% Tourist Development Tax. Review HOA CC&Rs before listing.
How long does the Palm Bay ADU permit process take?
5–10 months total: 1–2 weeks for zoning eligibility confirmation (critical: verify PUD status first), 4–10 weeks for design, 4–8 weeks for permit review, plus inspections and CO. Budget for Brevard County impact fees ($5,000–$10,000+) separately. Contact Growth Management at (321) 733-3042 or landdevelopmentweb@palmbayfl.gov.
Palm Bay Planning Department
Palm Bay Growth Management
Nearby Cities — ADU Rules
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More Brevard County ADU Guides
This page provides general information based on current ordinances and publicly available data as of March 2026. Zoning rules change — verify all requirements with your local planning department before making financial commitments.