AC permit timeline and inspections in Lake Mary, Florida
An AC changeout in Lake Mary is permitted work at any price: Florida’s new $7,500 exemption expressly excludes mechanical work. Inside the city, expect a 0.75%-of-valuation fee, an M412 final mechanical inspection, and inspections booked by 2:00 pm for the next business day.
What HB 803 did and did not do
Florida’s permit exemption for single-family work valued under $7,500, created by CS/CS/HB 803 (2026), ch. 2026-63, signed 6 May 2026 and effective 1 July 2026, does not apply to an air-conditioning changeout. It expressly does not apply to “any electrical, plumbing, structural, mechanical, or gas work” under s. 553.79(1)(g)2.b., Fla. Stat., and a changeout is both mechanical and electrical work. There is no dollar-amount exemption for a residential changeout in Florida.
What HB 803 did give you is a clock. Since 1 July 2026 s. 553.792(1)(a)1., Fla. Stat. requires a local government to approve, approve with conditions or deny a single-family residential permit application within five business days where the value of the work is under $15,000 and the applicant uses the local government’s own plans reviewer. A larger Lake Mary replacement can exceed $15,000, and then a longer tier of the same statute applies instead — so the five days is a condition, not a promise.
One thing is regularly credited to HB 803 and should not be. An HVAC replacement counts as a single-trade inspection under s. 553.791(1)(r), Fla. Stat., which is the private-provider statute and predates HB 803. It is an inspection category, not a permit category, and it is what makes a private provider an option in place of the jurisdiction’s own inspector.
The Notice of Commencement threshold has moved
Older contractor guidance still says a Notice of Commencement is required above $7,500 for dedicated HVAC work. Florida Statute 713.135 now exempts a direct contract to repair or replace an existing heating or air-conditioning system in an amount less than $15,000.
Practically: on a $10,000 changeout a homeowner working from an out-of-date FAQ will expect to record and post a Notice of Commencement the statute no longer requires. The statute governs. Ask which document your contractor is working from before the contract is written.
Which inspections a Lake Mary changeout actually gets
- M412 Final Mechanical. The inspection every changeout inside the city gets.
- M413 refrigerant piping test. Called when the line set is replaced — which, on an R-410A-to-R-454B changeout, it often is.
- M401 Rough Mechanical and M402–M404 HVAC duct work. In play when ductwork is part of the job rather than just the equipment.
- The City of Lake Mary publishes 15 mechanical inspection codes, M401 to M415, so you can read the schedule yourself rather than take a contractor’s word for what is being called.
- Scheduling: city inspections must be booked by 2:00 pm for the next business day. Lake Mary enforces the 2023 Florida Building Code, 8th Edition, and the 2020 NEC.
Two desks, one ZIP code
If the address is inside the city limits
City of Lake Mary Building Division
911 Wallace Court, Lake Mary, FL 32746. Permits 407-585-1441. Submittals go through the city’s own ePlan “GoPost” portal, not the county’s.
Mechanical permit fee for an alteration or repair — which is what a changeout is — is 0.75% of the documented mechanical valuation, $35 minimum. On a $9,000 changeout that is about $68. Inspections must be booked by 2:00 pm for the next business day. The city enforces the 2023 Florida Building Code, 8th Edition, and the 2020 NEC.
If the address is unincorporated
Seminole County Building Division
1101 E. First Street, Sanford, FL 32771. 407-665-7050. Open Monday to Friday 8:00 am to 5:00 pm, last customer sign-in 4:30 pm. Submittals go through Click2Gov and ePlan ProjectDox.
This is the desk for Heathrow, Heathrow Woods and the other unincorporated pockets that carry a Lake Mary 32746 mailing address. The county does not publish a residential mechanical permit fee schedule we could verify, so we do not quote one.
The City of Lake Mary charges 0.75% of the documented mechanical valuation for an alteration or repair — which is what a changeout is — with a $35 minimum. That is the city’s figure, not ours, and it changes without notice. On a $9,000 changeout that is about $68.
The full permit guide, including which addresses are unincorporated ›
Anchorage, clearances, and one thing that does not apply here
Seminole County is not in the High-Velocity Hurricane Zone. The HVHZ is Broward and Miami-Dade counties only under the 2023 Florida Building Code, Residential, Section R202, so Miami-Dade NOA product approval and the HVHZ chapters do not apply to a Lake Mary condenser pad. A competitor site in this market gets that wrong.
The pad and the equipment still have to meet the Florida Building Code and ASCE 7 wind loads, and the inspector will still look at the disconnect, the condensate termination, the secondary drain and float switch, and clearances from the property line and openings. In a gated Heathrow sub-development the association’s screening rules can constrain the location before the inspector ever sees it. What an association may and may not require ›
Sources for this page
- Fla. Stat. s. 553.79
- Fla. Stat. s. 553.792
- CS/CS/HB 803 (2026), ch. 2026-63
- City of Lake Mary — mechanical inspection codes
- City of Lake Mary — mechanical permit fees
Researched 6 September 2026. Fees, rebate amounts and code minimums change — check the issuing authority before you rely on a figure.