ADU Rules & Zoning in Coral Gables, Florida (2026)
What ADU can you build in your Coral Gables backyard?
Instantly check eligibility for Accessory Dwelling Units (ADUs), like Guest Houses, Garage Conversions, and In-Law Suites.
Coral Gables 2026 ADU Requirements Snapshot
ADU rules for Coral Gables, Miami Dade County. Verify all requirements with local planning.
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
- Skipping Board of Architects pre-review — submitting non-compliant designs wastes months and significant fees
- Assuming SB-48 overrides all local rules — Coral Gables has historically challenged state ADU preemption; confirm current ordinance status
- STR fine risk is real — Coral Gables enforces the 180-day minimum aggressively; do not plan Airbnb revenue
Building Limits
- Max Size:1000 sq ft
- Setbacks:10ft side / 15ft rear
- Detached Allowed?Yes
- Max Height:25 ft
- Build Cost Est.:$150,000–$320,000
- Min Rental Period:180 days
Rental Rules
No Owner-Occupancy Requirement: Both units can be rented to tenants simultaneously.
Short-Term Rentals Prohibited: Minimum 180-day stay required in Coral Gables.
Estimated Monthly Income
$2,000–$3,500/month
Based on 2025–2026 Coral Gables market data
Key ADU Restrictions in Coral Gables
- Board of Architects review required for all ADU designs — adds 60–90 days and requires architect-stamped drawings meeting Coral Gables aesthetic standards
- Short-term rentals prohibited — strict 180-day minimum stay ordinance actively enforced with fines
- Deed restrictions and city covenants layer on top of zoning — many Coral Gables parcels have additional recorded restrictions
Common Mistakes to Avoid in Coral Gables
- Skipping Board of Architects pre-review — submitting non-compliant designs wastes months and significant fees
- Assuming SB-48 overrides all local rules — Coral Gables has historically challenged state ADU preemption; confirm current ordinance status
- STR fine risk is real — Coral Gables enforces the 180-day minimum aggressively; do not plan Airbnb revenue
Eligible Zones in Coral Gables
Coral Gables ADU — Frequently Asked Questions
Can I build an ADU in Coral Gables, Florida?
ADUs are permitted in eligible residential zones in Coral Gables under Florida SB-48 (2026). Confirm your parcel zoning with the Miami Dade County Property Appraiser or city planning office.
What is the maximum ADU size in Coral Gables?
Maximum ADU size in Coral Gables varies by zoning district. Florida SB-48 prohibits size limits below 1,000 sq ft for compliant applications. Verify current local limits.
Do I need to be an owner-occupant to build an ADU in Coral Gables?
Coral Gables does not require owner-occupancy. Both the primary home and ADU can be rented to tenants simultaneously.
Can I use my Coral Gables ADU as an Airbnb?
Short-term rentals under 180 days are prohibited in Coral Gables. The minimum rental period is 180 days.
How do I get an ADU permit in Coral Gables?
ADU permits in Coral Gables follow standard Florida residential building permit workflow. Contact Miami Dade County building department for current requirements.
Coral Gables Planning Department
Nearby Cities — ADU Rules
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More Miami-Dade County ADU Guides
Serving homeowners in 33114, 33133, 33134, 33146 and surrounding Coral Gables zip codes.
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.