Building a custom home in Southeast Florida is one of the most significant investments you will ever make — and one of the most complex. Between navigating county permitting offices, understanding soil conditions, and complying with Florida's demanding hurricane building codes, there are landmines at every stage of the process. After years of building custom homes across Palm Beach, Broward, and Miami-Dade counties, here are the five things I wish every client knew before we broke ground.
Florida's Permitting Process Takes Longer Than You Think
One of the most common shocks for first-time custom home builders in Florida is how long it takes to get a permit approved. Depending on your county and municipality, expect the permitting process to take anywhere from 8 to 14 weeks — and that's if your plans are submitted cleanly, without revisions. Some high-demand jurisdictions like Miami-Dade or the City of Boca Raton can run even longer during busy construction seasons.
Each county has its own building department with its own backlog, its own reviewer preferences, and its own interpretation of the Florida Building Code. Palm Beach County's unincorporated areas operate very differently from the cities of West Palm Beach, Delray Beach, or Boynton Beach — even though they're all bound by the same base code. This means your architect and contractor need to have experience with your specific jurisdiction, not just the state code in general.
The most important thing you can do is have your plans fully approved and permitted before you finalize your construction timeline with your contractor. Starting a build with a permit "in review" is a recipe for delays, idle crews, and unnecessary carrying costs on your construction loan. Work with your design team to anticipate reviewer comments before submission, and make sure your contractor pulls the permit themselves — any legitimate GC in Florida should be doing exactly that.
"The permit process in Florida is one of the most misunderstood parts of a custom build. Skipping proper due diligence here can cost you months and thousands."
Soil Conditions and Foundation Types Matter
Florida sits on a foundation of limestone and sand — and in many areas, particularly closer to the coast and in low-lying inland areas, the water table is just a few feet below the surface. This has massive implications for how your home's foundation is designed and built. In Southeast Florida, the most common foundation types are monolithic slab-on-grade and stem wall construction, with CBS (concrete block structure) being the dominant framing method for homes in this region.
When soil conditions include heavy fill, organic material (muck), or high-plasticity clay, your geotechnical engineer may recommend soil compaction testing, soil remediation, or in some cases, deep pilings or caissons. These aren't upsells — they're engineering requirements that protect your home from differential settlement, which can crack slabs, distort door frames, and cause structural damage over time. A proper soil investigation before you finalize your foundation design is money very well spent.
CBS construction, while more expensive than wood frame, provides superior wind and impact resistance and is the clear choice for custom homes in this region. Pair it with a stem wall foundation — which elevates the slab above grade to reduce flood risk — and you have a starting point that satisfies both FEMA floodplain management requirements and common insurance underwriter preferences. Your contractor should be walking you through these decisions, not leaving them for you to research on your own.
Build to the Hurricane Code — and Understand What That Means
Florida's hurricane building requirements are among the most rigorous in the world, and for good reason. The Florida Building Code (FBC) mandates specific wind speed design criteria based on your location — in much of Southeast Florida, that's 170 mph or higher in the ultimate design wind speed category. This affects nearly every structural element of your home: the roof framing, the roof-to-wall connectors, the window and door specifications, and even the garage door wind load ratings.
Impact-resistant windows and doors are not optional in most of Southeast Florida — they're required by code. But not all impact products are created equal. Miami-Dade Notice of Acceptance (NOA) approval is the gold standard for impact products in this region, and any product installed in a Miami-Dade or Broward project should carry it. For Palm Beach County and northward, you're working under the High-Velocity Hurricane Zone (HVHZ) or standard FBC wind provisions depending on your specific location — and your contractor needs to know the difference.
Beyond windows and doors, your roof is the most critical element of hurricane resistance. Roof-to-wall connectors (also called hurricane straps or clips) must be specified and inspected by the building department. Secondary water barriers — a layer of protection applied to the roof deck to prevent water intrusion if shingles are lost — are also required in many jurisdictions. Yes, building to this standard costs more than a comparable home in the Midwest. But it also dramatically lowers your insurance premiums, increases your home's resale value, and gives you genuine peace of mind when the next storm makes landfall.
Vet Your Contractor Like You're Hiring an Executive
In Florida, the general contractor you choose isn't just a vendor — they are the person legally responsible for your project, your permit, your subcontractors, and the safety of your home. The stakes are too high to hire based on a referral alone or the lowest bid on your quote sheet. Start with the basics: verify your contractor's license at myfloridalicense.com through the Florida Department of Business and Professional Regulation (DBPR). A Certified General Contractor license (CGC prefix) allows them to work anywhere in the state; a Registered GC is limited to specific counties.
Next, ask for a Certificate of Insurance — not a verbal assurance, but the actual document. You want to see a minimum of $1 million in general liability coverage per occurrence and a workers' compensation policy that covers every person on the job site, not just full-time employees. In Florida, an injured uninsured worker can place a lien on your property. Verify both policies are current, and ask to be named as an additional insured on the GL policy during construction.
Finally, check the contractor's lien history through your county clerk's website. Mechanics' liens filed against past projects can be a red flag that the contractor doesn't pay their subs and suppliers. Ask them directly: do you pull your own permits, or do you use sub-permits through a sub-contractor? A general contractor who pulls the permit is legally accountable for the work. One who sidesteps that responsibility is telling you something important about how they operate. Choose someone who is transparent, organized, and has a track record of completed projects similar in scale to yours.
Budget a 10–15% Contingency — and Plan to Use It
There is no such thing as a custom home that comes in exactly on budget and exactly on schedule — especially in Southeast Florida's construction environment. Material prices have proven volatile, skilled labor supply fluctuates seasonally, and unforeseen site conditions are not a matter of if but when. The standard industry recommendation for a contingency fund is 10–15% of your hard construction budget, and we strongly advise our clients not to treat that as a number that will go unspent.
Common sources of unexpected costs include: rock or unsuitable soil discovered during excavation that requires removal and replacement with engineered fill; utility connection delays from FPL, county water, or sewer departments that push your schedule back; change orders driven by design decisions made mid-build; and material substitutions when specified products go on back-order. None of these are failures of planning — they're simply the reality of custom construction in a complex regulatory and supply-chain environment.
At Edmunds, we work to minimize change order surprises by front-loading design decisions before construction starts, pre-purchasing long-lead items like windows and cabinetry early in the process, and using detailed construction contracts that specify materials by manufacturer, model, and finish. We also review contingency usage with clients at every monthly progress meeting so there are no end-of-project surprises. Your contingency isn't a slush fund — it's insurance against the unpredictable, and a well-managed project will give it back to you partially or entirely.
