Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Home Additions & ADU Across Fort Myers Beach
A full home addition or ADU in Fort Myers Beach runs $45,000-$130,000 in the current market, and on Estero Island the real number often lands higher because of FEMA elevation rules. If you’re searching for a contractor who actually understands the post-Ian permitting stack along Estero Boulevard, you’ve found the right page. We’re Barrett & Sons Construction, founded in 1998 and run by Tom Barrett, and we quote additions and ADUs in Fort Myers Beach with the 50% rule, CCCL permits, and FEMA substantial damage letters already factored in, not discovered later. Call (877) 610-1318 and we’ll walk your property with you before a single number goes on paper.
Why Barrett & Sons Construction Is Fort Myers Beach’s Preferred Home Additions & ADU Company
Fort Myers Beach is not a mainland market. A contractor from across the bridge can quote a garage conversion in Cypress Lake and never once think about a CCCL permit. We think about it on every single job on the island, because the Florida DEP permit seaward of the Coastal Construction Control Line has killed more addition timelines than any other single document. Our Home Additions & ADU team has walked canal-front properties off Estero Boulevard, beachside lots in the 33931 ZIP, and mid-island cottages where the original 1960s framing is still in place. We know what the elevation certificate says before we write the scope.
Tom Barrett publishes his name, his address, and his license number. You can look it up before you sign anything. That’s not a marketing line. That’s how we’ve done business since 1998. When we quote a second-story addition in Fort Myers Beach, the change order process is already written into the contract. Every allowance in writing, every scope change on paper before work happens. A live person answers the phone 24 hours a day, seven days a week. Not a voicemail box, not an out-of-state call center. If something goes wrong after the build, Tom comes back. It’s written in the 90-Day Done Right Promise.
Our Home Additions & ADU Services in Fort Myers Beach
ADU Design & Permitting
An ADU in Fort Myers Beach starts with the paperwork, not the pour. We handle the Lee County permit, the FEMA substantial damage review if the property was flagged after Ian, and the DEP CCCL permit when the parcel sits seaward of the control line. Your design gets drawn to whatever elevation standard your lot demands. We don’t draw first and ask questions later. For a detached ADU in the 33932 ZIP, you’re looking at $90,000-$220,000 all in, and that number will not move unless you change the scope.
Garage Conversion ADU
Converting a ground-level garage into an ADU on Fort Myers Beach is the toughest financial call on the island. If the structure is substantially damaged under FEMA rules or below the required elevation, you cannot just drywall the interior and call it done. The 50% rule applies, and the rebuild must meet current NFIP flood zone standards. We price garage conversions at $30,000-$80,000, but we will tell you on the first walk whether your specific garage triggers an elevation review before we give you a fixed number. You deserve that honesty up front.
New Detached ADU
A new detached ADU in Fort Myers Beach means new pilings, new elevation, new everything. That’s the cleanest path on the island because you’re not fighting old framing or grandfathered flood conditions. We’ve built detached ADUs on canal-front lots where the old ground-level cottage had to stay and the new unit went up on concrete pilings beside it. Salt-laden air means every fastener, every flashing detail, every piece of hardware gets specified for a coastal barrier island, not a mainland subdivision.
Junior ADU & Interior Conversion
A junior ADU inside an existing elevated Fort Myers Beach home is often the fastest path to rental income without touching the exterior envelope. If the main structure already sits above the required flood elevation and passed its post-Ian review, an interior conversion avoids the CCCL permit entirely. We still open the walls expecting what old barrier island construction hides: cloth-wrapped wiring, termite-damaged rim joists, and the occasional 60-amp panel trying to power a modern household.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Fort Myers Beach
We don’t put mystery materials in your Fort Myers Beach home. When your addition or ADU calls for hardscape around the new foundation or a fresh patio, we install Techo-Bloc and Cambridge Pavers because they hold up to salt exposure and standing stormwater better than the cheap stuff. Paver work on an ADU site typically runs $3,500-$11,000 depending on the footprint. You can look up every brand we carry before you sign. Tom’s rule has always been simple: if it’s not a brand you can verify, it doesn’t go on the truck.
Common Home Additions & ADU Problems We See in Fort Myers Beach Homes
- FEMA substantial damage letters appearing after the bid. Post-Ian, nearly every pre-1975 ground-level structure on Estero Island carries a FEMA determination. A contractor who quotes without checking the file will hand you a change order the size of a second mortgage. We pull the file before we price the job.
- Elevation reviews killing second-story additions on paper. A second-story addition on an existing ground-level cottage does not bypass the 50% rule. If the addition pushes the structure’s improvement value past half of its pre-damage market value, the entire building must elevate. We tell you this before you spend a dollar on plans.
- Salt corrosion eating standard hardware in under five years. The salt-laden air on this barrier island destroys zinc-coated fasteners and mainland-grade flashing faster than any inland contractor expects. Every fastener on our Fort Myers Beach jobs is stainless or coated for coastal exposure. It’s not an upsell. It’s the only way the walls stay closed.
- CCCL stop-work orders on additions seaward of the line. Florida DEP runs a separate permit for any work seaward of the Coastal Construction Control Line. If your addition sits on the Gulf side of that line and your contractor skipped the DEP filing, the state will stop the job cold. We’ve taken over projects where that exact scenario added four months to the timeline.
Pricing for Home Additions & ADU in Fort Myers Beach, FL
Here’s what we’re seeing in Fort Myers Beach right now, with elevation compliance and coastal materials already factored in:
| Project | Fort Myers Beach Price Range |
|---|---|
| Home Addition | $45,000-$130,000 |
| ADU Construction | $90,000-$220,000 |
| Garage Conversion | $30,000-$80,000 |
Those are honest ranges, not teaser numbers. A second-story addition on a canal-front lot off Estero Boulevard that triggers a full elevation retrofit will land at the top of that range or beyond. A simple room addition on an already-elevated home in the 33931 ZIP might stay at the bottom. Our estimates are free. Call (877) 610-1318 and we will give you a written line-item quote before any contract is signed. Every price change after that comes as a written change order approved by you first.
We Also Serve Cities Near Fort Myers Beach
We run crews across the island and just over the bridge. If you’re in Iona, Cypress Lake, McGregor, or Villas, you get the same Barrett & Sons crew and the same written-everything process. Mainland jobs don’t face the same CCCL or elevation stack, but the way we write a contract doesn’t change. Home Additions & ADU in Fort Myers Beach is where our island work runs every week, and the surrounding communities get the same standard.
Serving Fort Myers Beach, FL - Our Local Coverage Area
We’re based in the Fort Myers Beach area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Home Additions & ADU in Fort Myers Beach
No, not under it. If FEMA flagged your property as substantially damaged, the existing structure cannot simply be built on top of or added under. The building must be brought up to current NFIP flood zone elevation standards, which typically means raising it on pilings or rebuilding elevated. You may still be able to build a new detached ADU on the site if it meets elevation and setback rules. Call (877) 610-1318 and we’ll review your FEMA file with you before you spend money on plans.
Yes, often. Any addition that increases the market value of a pre-Ian structure by more than 50% of its pre-damage value can trigger the 50% rule, and that includes a sunroom or an enclosed patio. The trigger is not the kind of room. It’s the dollar amount and the structure’s FEMA status. We check the substantial damage determination on every Fort Myers Beach property before we quote a sunroom, because getting this wrong means the county can halt the job mid-build.
You get a written change order. On a canal-front cottage off Estero Boulevard, our crew opened up a 1962 ground-level home for a second-story addition and found the original 60-amp panel, cloth-wrapped wiring, and termite-ravaged rim joists. The permit triggered an elevation review under the 50% rule. We rewired the entire structure, replaced the rotted subfloor, and wrote the piling retrofit as a priced change order before touching the existing walls. That’s how we work. Nothing hidden, nothing discovered later without a written price.
Because your neighbor is on the other side of the Coastal Construction Control Line. Parcels on the Gulf side of the CCCL fall under Florida DEP jurisdiction on top of Lee County building permits. That’s a dual-agency approval process that can add months to a timeline. Contractors who only work the mainland almost never encounter it. We file the DEP permit as part of our standard scope on any Fort Myers Beach addition seaward of the line, so the state doesn’t stop your job at the framing stage.
Only if your garage already sits above the required flood elevation and cleared its post-Ian FEMA review. Most ground-level garages on Estero Island do not. If your garage is below the base flood elevation or was built before the current FIRM maps, converting it to a living space triggers the 50% rule and requires elevation or full-code rebuild. We will tell you where your specific garage stands on the first visit, before any money changes hands. Call (877) 610-1318 for a free estimate and an honest read on your property.
What Actually Happens When You Open an Older Fort Myers Beach Wall
This is the part no one prepares you for. A pre-Ian Fort Myers Beach home, especially the 1950s through 1970s concrete block cottages that once packed Estero Island, hides things inside its walls. Cloth-wrapped wiring that predates grounded outlets. Rim joists that termites have been eating for a decade. Plumbing that was grandfathered under codes no longer in force. The moment you open those walls for an addition, the permit triggers code upgrades. Not because we’re looking for extra work. Because the county says so, and because the inspector works for you, not for us. That inspector is the only person on site who legally answers to the homeowner. Tom likes it that way.
Fort Myers Beach is not doing remodels anymore. Nearly every home addition or ADU on this island is legally a full-code elevated rebuild on pilings. Even interior work triggers the 50% rule and a FEMA substantial damage review. No mainland Lee County contractor faces that compliance stack. So when we bid a second-story addition or a sunroom, the number we give you already includes the rewiring, the termite repair, the piling retrofit if the elevation review goes against the existing structure, and the DEP permit if the parcel sits seaward of the CCCL. Allowances in writing. Change orders in writing. An allowance that is not on paper is a surprise waiting for a date.
Call Barrett & Sons for a Free Fort Myers Beach Estimate
If you live on Estero Island and you’re thinking about an addition or an ADU, the first step is a conversation, not a contract. We’ll walk your property, check your FEMA file, look at your elevation certificate, and give you a written estimate that reflects what the job actually requires. Our number is (877) 610-1318. A live person answers. You’ll talk to a Barrett, not a call center. And if we find something in your walls that changes the scope, you’ll see a written price before a single nail moves.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Fort Myers Beach from the South Florida office since 1998.