ADU Rules & Zoning in Coral Gables, Florida (2026)
What ADU can you build in your Coral Gables backyard?
Instant zoning report — see exactly what your zoning allows: permitted ADU types, size limits, setbacks, and lot requirements for your specific property.
ADU Rules in Coral Gables, Florida
We've researched Coral Gables's ADU rules so you don't have to. Here's what matters most — the facts that determine whether your project is possible, and how much it will cost.
- Maximum ADU size is 1,000 sq ft under Florida SB-48 — but Coral Gables actively challenges state preemption; verify current ordinance status
- Board of Architects review required for ALL exterior work including ADUs — adds 60–90 days and requires architect-stamped drawings
- 180-day minimum stay strictly enforced — no Airbnb/VRBO; plan for long-term tenants only
- SFR zone only — the vast majority of Coral Gables residential parcels qualify, but verify before designing
- Miami-Dade HVHZ construction standards apply throughout — mandatory impact-resistant construction adds significant cost
- Deed covenants and historic district overlays layer on top of state and city zoning — check recorded title restrictions
- Construction $150,000–$320,000 (HVHZ + architectural premium); rental income $2,000–$3,500/month — highest ADU rents in Miami metro
Last verified: 2026-03-14
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Backyard ADUs like this are being built across Coral Gables — here's how to do it right.
Here's exactly what Coral Gables zoning allows
ADU rules for Coral Gables, Miami Dade County. Verify all requirements with local planning.
Zoning allowance
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.
Size limits
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.
Lot + setbacks
Setback requirements vary by zoning district in Coral Gables. Confirm exact setbacks with Miami Dade County planning.
Height + coverage
Height and lot coverage limits vary by zoning district. Check Coral Gables zoning code.
Parking
Parking requirements for ADUs in Coral Gables vary by zoning district. Verify with local planning.
Rental / occupancy
Coral Gables does not require owner-occupancy under Florida SB-48 (2026). Verify current local rules.
Permit process
ADU permits in Coral Gables follow standard Florida residential building permit workflow. Contact Miami Dade County building department for current requirements.
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Building limits and rental rules, side by side
These two sets of rules determine what you can build and what income you can expect. Read both before you commit to a design or a rental strategy.
Building Limits
- Max Size:1,000 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
ADUs are NOT Permitted In:
- Historic District overlays — additional Board of Architects scrutiny applies; some historic parcels have recorded covenants further restricting ADUs
- Properties in planned developments or private gated communities with CC&Rs — verify recorded restrictions with Miami-Dade Clerk
- Commercial University Drive corridor and Miracle Mile commercial zone — residential ADUs not applicable
Here's exactly what you'll pay — and how to avoid the fees that catch most homeowners off guard
Most homeowners spend 3–4 weeks piecing this together on their own. We've mapped the full Coral Gables permit process step by step — so you know exactly what's coming, and what to prepare.
Step 1: Pre-Application Zoning Check
- Where:
- Coral Gables Building Division, 405 Biltmore Way, Coral Gables, FL 33134
- Contact:
- (305) 460-5211
- What to bring:
- Property address and parcel ID, preliminary site sketch, lot survey
- Timeline:
- No appointment fee — call ahead to confirm office hours
- Cost:
- No fee for initial inquiry
Step 2: Submit Permit Application
- Where:
- https://www.coralgables.com/departments/building
- Contact:
- (305) 460-5211
- What to bring:
- Architectural plans, site plan, boundary survey, energy compliance docs
- Timeline:
- Board of Architects pre-review: 60–90 days
- Cost:
- $11,800–$23,300 in permits and fees (excluding construction)
Step 3: Plan Review & Revisions
- Where:
- Coral Gables Building Division
- Contact:
- (305) 460-5211
- What to bring:
- Responses to any correction letters; revised drawings if required
- Timeline:
- Board of Architects pre-review: 60–90 days. Building permit review: 4–6 weeks. Inspections: 8–12 weeks. Total: 6–10 months.
- Cost:
- No additional fee for standard resubmittal
Step 4: Construction & Inspections
- Where:
- Coral Gables Building Department
- Contact:
- (305) 460-5211
- What to bring:
- Approved permit set must be on-site at all times during construction
- Timeline:
- Schedule inspections as each phase of work is completed
- Cost:
- Included in permit fee
Full Coral Gables Permit Cost Breakdown
These are the fees you'll encounter, in the order you'll typically encounter them.
| Cost Item | Amount / Notes |
|---|---|
| Total Estimated Cost | $11,800–$23,300 in permits and fees (excluding construction) |
| Building Permit Fee | $3,500–$6,000 (based on ADU construction value) |
| board of architects review fee | $500–$1,500 (per submittal; resubmittals charged separately) |
| impact fees miami dade | $5,000–$10,000 |
| Plan Review Fee | $800–$1,800 |
| Utility Connection Fees | $2,000–$4,000 |
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Key ADU Restrictions in Coral Gables
These are the rules that most often catch homeowners by surprise. Read them carefully before engaging an architect.
- 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
ADUs are permitted by-right in these zoning districts. Verify your parcel at the county GIS portal — most homeowners can confirm their zone in under 5 minutes.
Coral Gables neighborhoods where ADU permits are being filed — is your street next?
Coral Gables ADU — Frequently Asked Questions
These are the questions we hear most often from Coral Gables homeowners. If yours isn't here, our ADU Zoning Experts can answer it directly.
What exactly does the Coral Gables Board of Architects review for ADUs?
The Board reviews all exterior design elements including massing, roof pitch, window proportions, materials, color palette, and landscaping impact. ADUs must be architecturally compatible with the primary residence and Coral Gables' Mediterranean Revival aesthetic. Submit schematic designs first for preliminary feedback before investing in full construction drawings — this saves costly redesign fees.
Has Coral Gables been able to restrict ADUs below Florida SB-48 limits?
Coral Gables has historically challenged state preemption of local zoning authority. As of March 2026, Florida SB-48 establishes a 1,000 sq ft minimum cap that municipalities cannot undercut. However, Coral Gables' Board of Architects process and design standards can effectively add cost and time beyond what SB-48 mandates. Call the Building Division at (305) 460-5211 to confirm the current approved size limit for your zone.
Is the 180-day STR minimum strictly enforced in Coral Gables?
Yes. Coral Gables' code enforcement is among the most active in Miami-Dade County. The city monitors short-term rental platforms and issues notices and fines for non-compliant rentals. Do not plan Airbnb or VRBO income from a Coral Gables ADU. The strong long-term rental market ($2,000–$3,500/month) makes STR income unnecessary.
What does a Coral Gables ADU project actually cost all-in?
Budget $150,000–$320,000 for a 600–1,000 sq ft detached ADU. The premium over typical Florida ADU costs reflects: HVHZ-rated construction (impact windows, enhanced roofing, reinforced framing), architectural design fees for Board of Architects compliance ($15,000–$30,000), premium site work and landscaping, and higher general contractor overhead in the Coral Gables market. Get three bids from contractors with proven Coral Gables permit histories.
Are there any grants or incentives for ADU construction in Coral Gables?
Coral Gables does not currently offer ADU-specific grants or fee waivers (unlike some other Florida cities). Miami-Dade County's affordable housing programs rarely apply to Coral Gables given the city's income demographics. Some ADU costs may be eligible for federal energy efficiency tax credits if you incorporate solar, insulation, or energy-efficient systems — consult a tax professional.
Find out what ADU you can build in your backyard
— and get a free Coral Gables ADU guide for your area.
Free report · No commitment · 60 seconds
Find out what ADU you can build in your backyard
— and get a free Coral Gables ADU guide for your area.
Free report · No commitment · 60 seconds
Coral Gables Planning Department
We recommend calling Coral Gables Building Division at (305) 460-5211 before submitting anything — a 10-minute conversation can save weeks of back-and-forth on your permit application.
Coral Gables Building Division
Nearby Cities — ADU Rules
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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.