In Miami-Dade County, the office that issues your air conditioning permit depends on your address, not on where you bank or get mail. If your property sits inside one of the county’s 34 incorporated cities, that city’s own building department issues the permit and sets its own fee. If you are in an unincorporated area such as Kendall, Tamiami, The Hammocks, or Westchester, the Miami-Dade County RER Building Division handles it instead, and the fee schedule can look completely different across a city line.
TL;DR
Miami-Dade County has 34 incorporated municipalities, and every one runs its own building department that issues its own AC permits, separate from the county. Properties in unincorporated areas, with folio numbers starting with “30,” are permitted instead by the Miami-Dade County RER Building Division. A licensed air conditioning contractor, not the homeowner, is expected to pull the permit in nearly every case. Fees vary widely: unincorporated Miami-Dade charges a flat $130 for an exact change-out, Coral Gables sets a $200 residential minimum, and Doral charges $250 flat on jobs under $10,000. Whichever office issues your permit, the equipment still needs product approval for the High-Velocity Hurricane Zone, which covers all of Miami-Dade.
Which Building Department Issues Your AC Permit?
Miami-Dade County is made up of 34 separate incorporated municipalities, confirmed on the county’s own municipalities list, and every one, from the largest cities down to the smallest villages, runs its own building department rather than routing permits through the county. The Miami-Dade County Property Appraiser’s Municipal Building Contact Information directory names a Building Official for each of the 34, which is why a homeowner in Hialeah files at a completely different office than a homeowner in Coral Gables a few miles away.
If your address is not inside any of those 34 cities, you are in unincorporated Miami-Dade, and the Miami-Dade County RER Building Division is your permitting authority instead. Unincorporated does not mean rural. Some of the county’s largest communities, including Kendall, Fontainebleau, The Hammocks, Westchester, and Tamiami, are unincorporated, meaning none has its own city government or building department, even though each has its own name and identity. A resident of The Hammocks files with the county the same way a resident of a smaller unincorporated pocket would.
How Do I Know Which Authority Covers My Address?
The reliable answer is not your city or ZIP code. It is your property’s folio number. Parcels in unincorporated Miami-Dade carry folio numbers that begin with the digits 30, a pattern the county documents on its own how to apply for a permit page. A folio that does not start with 30 places you inside one of the 34 municipalities, and that city’s building department, not the county, is who you file with.
This trips up more homeowners than any other part of the process. Plenty of unincorporated neighborhoods carry a Miami mailing address on their bills even though the City of Miami has never issued a permit there. The safest habit is to check the folio before assuming an authority: a homeowner in Doral, Homestead, Miami Beach, or North Miami files with that city, while a home a short drive away in an unincorporated pocket files with the county, regardless of how similar the two addresses look on paper. Your contractor can usually confirm the correct office in a few minutes once they have the folio number.
Does a City Permit Still Need County Sign Off?
Sometimes. Even after a city has issued your building permit, Miami-Dade County can still require a separate review for specific scopes, tracked under what the county calls a County Municipal Approval, or “M” process number, covering things like DERM environmental review, water and sewer connections, and fire review, per the county’s County Municipal Approval page. A routine, stand-alone AC change-out rarely triggers this, since swapping a condenser does not usually touch water, sewer, or environmental scopes. It tends to come up when AC work is bundled into a larger renovation. If your project is more than a straight equipment swap, ask your contractor whether an “M” number applies on top of your city’s permit, so the job is not stalled waiting on a review nobody requested.
Who Pulls the AC Permit, You or the Contractor?
In practice, it is the licensed air conditioning contractor who pulls the mechanical permit, not the homeowner. Florida licenses this trade two ways: a state-certified contractor, carrying a CAC license number, can pull permits in any Florida jurisdiction, while a locally registered contractor, carrying an RA license number, can only pull permits where they hold local registration, a distinction spelled out in the statute governing certified and registered contractors. Florida does allow a narrow owner-builder exception under Florida Statute 489.103 that technically lets a homeowner pull a permit on their own single-family residence, but it requires the owner to personally appear, sign a disclosure statement, and directly supervise the work, rather than simply hiring an unlicensed installer. Confirm your contractor’s license is current before they file, since the permit rides on that license staying valid through final inspection.
How Much Does an AC Permit Cost in Miami-Dade?
Because each of the 34 cities plus the county sets its own schedule, there is no single Miami-Dade price for an AC permit. Unincorporated Miami-Dade is the most transparent: the county built a dedicated flat fee for an exact, like-for-like change-out, set at $130, under Implementing Order 4-63. Anything other than an exact swap falls back to the standard $24.17 per ton schedule, with a $147 minimum, under that same order.
Cities generally price the permit as a percentage of job value or a per-ton charge, and on an ordinary change-out that math almost always lands on the city’s published minimum rather than a higher percentage figure. Coral Gables sets a $200 residential minimum, calculated as 2.00% of construction value up to $250,000, per its fee schedule. Doral charges a flat $250 on jobs under $10,000, moving to 2.5% of value above that, per its fee schedule. Hialeah’s last verified schedule set a mechanical minimum of about $180, though its current fee schedules page references a newer schedule to confirm before budgeting. The City of Miami, Miami Beach, Homestead, and North Miami all price mechanical permits case by case, so call ahead: City of Miami, Miami Beach, Homestead, and North Miami.
Add mandatory surcharges on top of whatever base fee you are quoted. In unincorporated Miami-Dade, the base fee carries a 7.5% RER surcharge, a 5% code-administration fee, the statewide 3% surcharge, and the county’s $0.60 per $1,000 code-compliance charge, all documented in Implementing Order 4-63. Most cities layer a version of the same surcharges on their own base fee, so budget a little above the headline number you are given.
AC Permit Authority and Fees by Miami-Dade Area
The table below lines up a representative set of incorporated cities against the unincorporated county row, with each fee figure grounded in a current published source.
| Area | Who issues the AC permit | Residential AC permit fee | Source |
|---|---|---|---|
| Unincorporated Miami-Dade (folios starting “30”; includes Kendall, Tamiami, The Hammocks, Westchester) | Miami-Dade County RER Building Division | $130 flat for an exact change-out; $24.17 per ton with a $147 minimum otherwise | Implementing Order 4-63 |
| Hialeah | Hialeah Building Department | About $180 mechanical minimum on the last verified schedule; confirm the current figure | Hialeah fee schedules |
| Coral Gables | Coral Gables Development Services | $200 residential minimum, or 2.00% of value up to $250,000 | Coral Gables fee schedule |
| Doral | Doral Building Department | $250 flat for jobs under $10,000 | Doral fee schedule |
| City of Miami | City of Miami Building Department | Priced as a percentage of construction cost plus a minimum fee; confirm with the department | City of Miami fee schedule |
| Miami Beach | Miami Beach Building Department | Confirm current AC line with the department | Miami Beach fee schedule |
| Homestead | Homestead Building Department | Confirm with the department | Homestead applications and fees |
| North Miami | North Miami Building Department | Confirm with the department; schedule under revision | North Miami building department |
The other 26 Miami-Dade municipalities, including Cutler Bay, Palmetto Bay, Aventura, Key Biscayne, and Miami Gardens, also run their own building departments under the same municipal building contacts directory cited above. Call ahead for that city’s current fee schedule before you budget a change-out.
Does the HVHZ Rule Apply No Matter Which City Issues My Permit?
Yes. Regardless of which office stamps your permit, all of Miami-Dade County sits inside the High-Velocity Hurricane Zone, the strictest tier of the Florida Building Code, and every outdoor AC condenser and its tie-downs must carry a current Miami-Dade Notice of Acceptance or an HVHZ-endorsed Florida Product Approval before the installation can pass inspection. That requirement is identical whether you live in Aventura, a barrier-island town like Surfside, or an unincorporated inland neighborhood. Check a specific unit’s approval yourself with the county’s Product Control Search before you sign a contract. For the full HVHZ equipment, wind speed, and inspection rules that sit on top of whatever permit fee applies, see our guide to AC permits and the HVHZ code in Miami-Dade.
Where to Find AC Companies in Miami-Dade
Once you know which office issues your permit, find a licensed contractor who already works in your city. Browse the full countywide list at the AC repair companies in Miami-Dade County hub, or go straight to a city page such as Hialeah, Coral Gables, Doral, Homestead, Miami Gardens, or Key Biscayne. Ask any contractor how often they pull permits at your specific building department, since one who already knows that office’s process tends to move faster. Our recommended partner, Air Nifty, has served South Florida since 1997, and is a licensed and insured Florida air conditioning contractor holding license CAC1824313.
Frequently Asked Questions
Does the Miami-Dade County building department issue my AC permit, or does my city?
It depends on whether your property sits inside one of Miami-Dade’s 34 incorporated cities or in an unincorporated area. Inside a city such as Hialeah, Coral Gables, or Doral, that city’s own building department issues the permit and sets the fee. If your property is unincorporated, even one with a recognizable name like Kendall or Westchester, the Miami-Dade County RER Building Division issues it instead, confirmed by your folio number.
How do I find out if my property is in unincorporated Miami-Dade or inside a city?
The most reliable way is to check your property’s folio number. Parcels in unincorporated Miami-Dade carry folio numbers beginning with the digits 30; a folio that does not start with 30 sits inside one of the 34 incorporated municipalities, and that city’s building department is your authority no matter what your mailing address says. A Miami mailing address does not prove your home is inside the City of Miami, so confirm the folio before you assume which office to call.
Do I still need HVHZ approved equipment if my city already requires a strict permit process?
Yes, the mechanical permit and the HVHZ product approval are two separate requirements that both apply everywhere in Miami-Dade, regardless of which office issues your paperwork. The permit lets a building department inspect the installation, while the HVHZ rule requires the condenser and its tie-downs to carry a current Miami-Dade Notice of Acceptance or an HVHZ-endorsed Florida Product Approval. Neither substitutes for the other, so a compliant installation needs both in place before it can pass final inspection.
Can I pull my own AC permit as a homeowner instead of using my contractor’s license?
In nearly all cases, no. The mechanical permit is filed under a licensed contractor’s state-certified or locally registered credential, and Florida’s owner-builder allowance, which would let a homeowner pull a permit for their own residence, is narrow, requiring the owner to personally appear, sign a disclosure statement, and directly supervise the work rather than hire someone unlicensed. Because Miami-Dade building departments scrutinize owner-pulled HVAC permits closely, most homeowners find it faster to let their licensed contractor pull the permit as part of the job.
Does my permit fee change depending on whether I am in an incorporated city or unincorporated Miami-Dade?
Yes, and the difference can be more than a hundred dollars. Unincorporated Miami-Dade charges a flat $130 fee for an exact, like-for-like change-out, while cities set their own schedule, such as Coral Gables’ $200 residential minimum or Doral’s flat $250 fee on jobs under $10,000. Other cities price the fee as a percentage of job value or a per-ton charge instead, so the total can vary noticeably depending on which of the 34 cities, or the unincorporated county, issues your permit.
Whichever office ends up issuing your permit, the fastest path from question to a compliant installation is a licensed contractor who already knows that department’s process, city or county alike.