How Much Does It Cost to Build a House in South Florida? A Line-by-Line Breakdown

"How much per square foot?" is the first question almost everyone asks us about a new house. It's a fair question with a misleading answer. A per-square-foot number hides the things that actually move the price in South Florida: what the lot needs before you can build on it, how high the house has to sit, which hurricane rules apply and what the county and city charge before they issue a permit.

So instead of a number pulled out of the air, here is the full list of what you pay for when you build a home here, what each piece depends on and where the official figures come from. Use it to build your own budget, or to check whether a bid you already have is complete.

Start with the national baseline

The most reliable public breakdown of new home costs is the National Association of Home Builders' Cost of Constructing a Home survey. Its 2024 edition, based on builders across the country, found an average new home of 2,647 square feet selling for $665,298, with construction costs of $428,215, about $162 per square foot. That's a national average, not a South Florida price, but the way it splits the money up is useful anywhere.

Two things stand out. First, interior finishes are the biggest single slice, and they are where your choices matter most. Second, more than a third of the money goes into the structure and the shell (foundations, framing and exterior), which is exactly the part South Florida's codes make more demanding.

Concrete block, not wood: what CBS does to the price

National cost figures describe a wood-framed house, because that is what almost everyone else builds. NAHB's analysis of Census Bureau data found that 94 percent of new single-family homes completed in the United States in 2025 were wood framed and only 5 percent concrete framed. Even across the whole South, concrete was 9 percent. South Florida is the exception: most single-family homes in Miami-Dade, Broward and Palm Beach are CBS, concrete block and stucco. Our post on what a CBS home is explains how one is put together.

That matters for your budget because the framing line in a national estimate is priced for lumber, carpenters and sheathing. A block house replaces it with a different set of costs:

• Masonry walls. Block laid by a masonry crew, with mortar, instead of stud walls put up by framers.
• Steel and concrete in the walls. Vertical rebar at corners, beside every opening and at regular spacing, with those cells filled solid with concrete.
• The tie beam and lintels. A continuous reinforced concrete beam on top of the walls and over every window and door, which means formwork, steel, a concrete pour and often a pump truck.
• Straps cast into the beam. Metal connectors set in the concrete to tie each roof truss down. The roof itself is usually still wood trusses, engineered for the wind zone.
• Stucco and furring. Stucco over the block outside, and furring strips with insulation on the inside face of the exterior walls before the drywall goes on.
• Inspections and curing time. Filled cells and the tie beam are inspected before they are covered, and concrete needs dry weather and time to cure. Every extra week is a week of loan interest.

What you get for that money is a shell that does not rot in the humidity, that termites cannot eat and that buyers here expect; CBS shows up on listings, appraisals and insurance forms. Many two-story homes split the difference, with a block first floor and a wood-framed second floor.

The land: usually the biggest number after the house

In the NAHB survey, the finished lot averaged $91,057, or 13.7 percent of the sales price nationally. In much of South Florida, buildable land is scarce and the lot can be a much larger share of the total. In established neighborhoods, many new homes go up on teardown lots, where an older house comes down first.

• Teardown lots. Add the cost of demolition, the asbestos survey, capping the sewer or abandoning the septic tank and removing the old slab. Our demolition company covers this in its guide to buying a teardown lot, and we explain the benefit of using one contractor for both in demolition and construction under one contractor.
• Vacant lots. Check whether water and sewer are at the street, whether the lot needs fill, and whether it is in a flood zone, before you price the house.
• Survey and soil. A boundary survey with elevations, and often a soil test, come before design. Both affect the foundation, and the foundation affects the budget.

The costs that are specific to South Florida

Hurricane code

Miami-Dade and Broward are in the High-Velocity Hurricane Zone, the strictest wind provisions in the Florida Building Code. Walls, roof connections and every window, door and garage door have to be designed and approved for it, usually with a Miami-Dade Notice of Acceptance. Palm Beach County is outside the HVHZ, but openings there still need impact-rated products or approved shutters. We explain the difference in what the High-Velocity Hurricane Zone means for your project and NOA versus Florida Product Approval.

Flood elevation

In a FEMA flood zone, the Florida Building Code requires the lowest floor of a new home to sit at least one foot above the base flood elevation, or higher if the local design flood elevation is higher. In coastal A and V zones, the measurement is to the bottom of the lowest structural member, and V zones require an open foundation. Some cities require more freeboard than the code minimum. Raising a house means fill, taller stem walls or piles, more steps or ramps, and sometimes a driveway that has to climb. Get the lot's flood zone and base flood elevation from the survey before you design anything.

Near the beach

On the ocean side of the Coastal Construction Control Line, a new home needs a state permit as well as the local one, has to meet stricter siting and design rules, and is usually built on an elevated pile foundation. See our guide to building near the beach and the CCCL.

Impact fees, permit fees and utility connections

These are the costs people forget, because they don't look like construction. In the NAHB survey, building permit fees averaged $7,640, impact fees $6,367 and water and sewer fees and inspections $6,260 nationally. South Florida's numbers can be higher, and they vary by city.

Impact fees pay for the roads, schools, parks and public safety a new home will use. They are charged on new construction, and they are generally due before the building permit is issued. Palm Beach County publishes its full schedule for every city, which makes it a good example of what to expect:

• Miami-Dade. The county charges impact fees for mobility (roads), fire, police, parks and schools, based on the size and type of the project. Depending on the city, some of these go to the county and some to the city, and some cities add their own. All of them have to be paid before the building permit is issued.
• Broward. Impact and school fees depend on the city and the project. The school portion is now paid directly to the School Board of Broward County after it sends an invoice.
• Permit fees. Most building departments base the permit fee on the project's value or size, plus plan review, inspection and state surcharges.
• Utilities. Water and sewer connection charges, meter fees and the electric service connection are separate from the permit. If there is no sewer at the street, a septic system has its own permit and design.

Design, engineering and the paperwork

Before a building department will review a new house, it needs a full set of signed and sealed drawings. Plan on an architect or residential designer, a structural engineer, truss engineering, energy calculations, the survey and, often, a soil report. If your community has an HOA or design review board, add its review and any changes it asks for. Our post on HOA approval explains how that works.

Time is a cost too. The longer design and permitting take, the longer you carry the land and the loan. Our post on how long building permits take shows what the state's review deadlines are and what adds time.

Financing and insurance during construction

• Construction loan interest. Most construction loans pay out in draws as the work is inspected, and you pay interest on what has been drawn. A longer build means more interest.
• Builder's risk insurance. The house under construction needs coverage for storms, fire and theft until it is finished. Ask who carries it, you or the contractor, and confirm it in the contract.
• Homeowners and flood insurance after. In South Florida, insurance is part of the cost of owning the new house. Building above the required flood elevation and with wind-resistant features can lower premiums; our post on wind mitigation inspections covers the discounts.

A budgeting worksheet you can actually use

1. Land. Purchase price, closing costs and, for a teardown lot, demolition, the asbestos survey, sewer cap or septic abandonment and slab removal.
2. Site. Survey, soil test, fill, clearing, drainage and the driveway.
3. Design. Architect or designer, structural engineer, trusses, energy calculations and any HOA or design board submittals.
4. Fees. Building permit, impact fees, water and sewer connections, electric service and any state permit near the beach.
5. Construction. The contractor's price for the house itself, with allowances for finishes clearly listed.
6. Contingency. A reserve for things nobody can see yet, such as soil conditions or changes you decide to make.
7. Carrying costs. Construction loan interest, builder's risk insurance, property taxes and utilities during the build.
8. After move-in. Homeowners and flood insurance, landscaping you postponed, window treatments and furniture.

Where you can control the cost

• Pick the lot with the budget in mind. A lot outside the flood zone, with sewer at the street and no fill needed, can save more than any finish choice.
• Keep the shape simple. A straightforward footprint and roof are cheaper to engineer, form and build than many corners and roof planes.
• Use standard opening sizes. Impact windows and doors are approved and priced by size; custom sizes and very large openings cost more.
• Decide finishes before the contract. Allowances that are too low are the most common source of surprises. Choosing early makes the price real.
• Build once, at the right height. Meeting or exceeding the required elevation now costs less than dealing with flood damage or insurance premiums later.

The bottom line

The cost of building a house in South Florida is the house plus everything the house needs to stand on this particular piece of ground: the lot, the elevation, the hurricane code, the fees and the time. Price those lines separately and you will understand any quote you get. We build new homes and additions across Miami-Dade, Broward and Palm Beach, and we can take a lot from demolition to a finished house under one license. Tell us about your lot and we will walk you through what your project will need.