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 Lauderdale-by-the-Sea
A home addition or ADU in Lauderdale-by-the-Sea typically runs $45,000 to $130,000 for an addition, and $90,000 to $220,000 for a new detached ADU. The town’s strict 35-foot height limit and direct Atlantic salt exposure shape every material and permit decision on these jobs. If you’re planning an addition, a garage conversion, or a second story in the 33303 ZIP, call Barrett & Sons Construction at (877) 610-1318. We’re Tom Barrett’s crew, owner-operated since 1998, and we plan Lauderdale-by-the-Sea projects from the salt air up, not from a generic template.
Why Barrett & Sons Construction Is Lauderdale-by-the-Sea’s Preferred Home Additions & ADU Company
We’ve walked enough 1950s and 1960s CBS buildings off El Mar Drive and Bougainvilla Drive to know what the salt does to rebar, lintels, and fasteners within a few years of exposure. That local knowledge goes into every estimate we write for Home Additions & ADU work in this town. When a homeowner on Sea Ranch Lakes border shows us a spalling rear wall, we’re not surprised. We’ve seen it on a dozen duplexes within a half mile of the beach.
Tom Barrett’s sons run the crews. When you call, a live person answers, 24/7. The crew members who show up at your Lauderdale-by-the-Sea property carry our name, are background-checked, and wear our uniform. We pull permits and get inspections signed on every eligible job. And every contract carries the 90-Day Done Right Promise in writing: if something isn’t right, one call brings Tom back. Ask anyone on your street, or look up our license number yourself.
Our Home Additions & ADU Services in Lauderdale-by-the-Sea
Here’s what we handle most often for Lauderdale-by-the-Sea homeowners. Each one gets planned around the 35-foot height cap and the marine environment from day one.
ADU Design & Permitting
In Lauderdale-by-the-Sea, design and permitting aren’t separate steps. They’re the same step. The town’s zoning legwork determines whether your ADU fits under the height ceiling, how far it must sit from the property line, and whether the existing CBS shell can carry the new load. We price that legwork into every estimate before we touch a drawing. When a homeowner wants a rooftop deck or a raised roofline, we tell them up front whether it triggers a variance fight with the town.
Garage Conversion ADU
A garage conversion in Lauderdale-by-the-Sea runs $30,000 to $80,000, and it’s often the smartest way to add living space without touching the roofline. Many 1950s-era garages in this town sit within the original footprint, which means the 35-foot limit rarely becomes an issue. We check the slab for salt wicking, replace any corroded lintels, and tie the new framing into the existing CBS with hot-dipped galvanized anchors. We also specify impact-rated windows and doors because Broward County’s HVHZ rules require them, even on a converted garage.
New Detached ADU
A new detached ADU in Lauderdale-by-the-Sea costs $90,000 to $220,000 depending on size, finish level, and how much site prep the lot needs. The height limit keeps these buildings low-rise by design, but that doesn’t make the engineering simple. We’re tying a new structure into Florida’s high-velocity hurricane zone code, with impact-rated openings, stainless steel fasteners, and a foundation detail that accounts for sandy, salt-laden soil. We write those allowances in writing before the first nail moves.
Junior ADU & Interior Conversion
For homeowners working within an existing footprint, a junior ADU or interior conversion in Lauderdale-by-the-Sea is the most cost-controlled route. We convert underused bedrooms, enclosed Florida rooms, or storage wings into code-compliant secondary units. Because the shell already exists, the permit path is shorter. But the salt air still demands the same marine-grade hardware and impact-rated windows inside as out. We don’t skip that to save a few dollars, and we explain why on every estimate.
What happens when you call
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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 Lauderdale-by-the-Sea
We install materials you can look up. On Lauderdale-by-the-Sea additions and ADUs, we routinely specify GAF roofing assemblies, Schluter waterproofing in wet areas, and Grohe fixtures where coastal corrosion resistance matters. We don’t stock mystery brands off a van. We stock local parts that work in this salt environment, and our suppliers in the Fort Lauderdale area keep marine-grade hardware on hand for fast turnaround on 33303 jobs. You’ll see the exact product names in your written scope of work before we start.
Common Home Additions & ADU Problems We See in Lauderdale-by-the-Sea Homes
- Corroded fasteners and failed weather seals: Untreated galvanized fasteners and standard window frames corrode within 2 to 3 years from direct Atlantic salt spray, leaving railings loose and new additions leaking at the flashing. We specify stainless steel or hot-dipped galvanized hardware throughout, and we write that spec into the contract.
- Zoning surprises from the 35-foot cap: Contractors unfamiliar with Lauderdale-by-the-Sea’s height ordinance price a second-story addition without zoning legwork. The variance gets denied mid-design, and the homeowner is left holding unusable plans. We run the height check before we commit to a price.
- Salt-damaged paver joints and slabs: Cheap paver joints and unsealed concrete crack within the first storm season. Saltwater wicks into the slab, corroding embedded anchors and rebar from the inside. We seal joints and specify marine-grade base details on every patio and walkway tied to an addition.
- Hidden corrosion in existing CBS walls: Load-bearing walls in 1950s to 1970s CBS buildings hide corroded lintels and rebar behind stucco. A new addition tied into an unreinforced existing wall can fail inspection sign-off after rough-in. We probe those walls before we design the connection.
Pricing for Home Additions & ADU in Lauderdale-by-the-Sea, FL
Here’s what you can expect to budget for common scopes in Lauderdale-by-the-Sea:
| Project Type | Typical Range in Lauderdale-by-the-Sea |
|---|---|
| ADU Construction | $90,000 - $220,000 |
| Home Addition | $45,000 - $130,000 |
| Garage Conversion | $30,000 - $80,000 |
| Impact Window Installation | $8,000 - $25,000 |
Coastal-spec materials cost more than inland-spec, and that’s a real line item here. Stainless steel fasteners, impact-rated openings, and marine-grade finishes add 15 to 25 percent to a typical addition budget versus the same job built 15 miles inland. But the cheap spec fails within a decade in this salt air, and then you’re paying for the coastal spec twice, plus tear-out. Call (877) 610-1318 and we’ll give you an honest, written estimate with allowances in writing.
We Also Serve Cities Near Lauderdale-by-the-Sea
Our crews work throughout the surrounding area, including North Andrews Gardens, Oakland Park, Wilton Manors, and Sunrise. When you call us from Lauderdale-by-the-Sea, you’re talking to the same owner-operated team, not a franchise dispatching strangers. Free estimates, written change orders every time, and Tom Barrett’s name on the contract.
Serving Lauderdale-by-the-Sea, FL - Our Local Coverage Area
We’re based in the Lauderdale-by-the-Sea 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 Lauderdale-by-the-Sea
The 35-foot limit applies town-wide, to every structure on the lot, including detached ADUs. Any new structure or addition in Lauderdale-by-the-Sea must stay under that hard ceiling. If your design pushes over it, even for a rooftop deck or raised roofline, you’re in a variance fight with the town before a single drawing gets approved. Call (877) 610-1318 and we’ll check your property’s zoning envelope before you spend money on plans.
We specify stainless steel fasteners for exposed connections, hot-dipped galvanized anchors for anything embedded in concrete, and impact-rated windows and doors throughout the addition. If we’re tying into an existing CBS wall, we probe it first for corroded rebar and lintels, then design the connection accordingly. We write the exact hardware spec into your contract, and we don’t swap it out to save money mid-job.
In most Lauderdale-by-the-Sea homes built in the 1950s and 1960s, a garage conversion stays within the existing footprint and roofline, so the 35-foot limit rarely becomes a problem. The bigger issues are the slab condition, salt wicking, and whether the existing CBS walls can carry the new load. We inspect those before we scope the job. Garage conversions here run $30,000 to $80,000 depending on what we find.
Two reasons. First, the marine hardware and impact-rated openings required for the high-velocity hurricane zone add 15 to 25 percent over inland materials. Second, the 35-foot height cap forces more careful structural engineering and, in many cases, variance work with the town before we can build. Inland contractors often price the job without that legwork, then hit the wall mid-design. We price the zoning compliance into every estimate up front. Call (877) 610-1318 for a written quote.
We pull the permits, schedule the inspections, and get them signed off. For a 1950s CBS building, that means we first verify the existing walls and slab are structurally sound, because many of these older buildings have corroded rebar and lintels that won’t pass current code without repair. We write the permit path and inspection milestones into your contract. The permit inspector works for you, not for us, and we plan every job so the inspections pass the first time.
Planning a home addition or ADU in Lauderdale-by-the-Sea means getting the materials and the height cap right before you spend a dollar. Call Barrett & Sons Construction at (877) 610-1318 for a free estimate. We’ll walk your lot, check the zoning envelope, and give you a written, itemized scope with allowances in writing. No surprises, no short-lived hardware, and a 90-Day Done Right Promise on the contract.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Lauderdale-by-the-Sea and surrounding communities since 1998.