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 Boca Raton
Home additions and ADU construction in Boca Raton typically runs $45,000 to $130,000 for standard room additions, with detached ADUs ranging $90,000 to $220,000 depending on size, site prep, and finish level. We’re Barrett & Sons Construction, and we’ve been building in South Florida long enough to know what Boca Raton’s Architectural Review Board will flag before the drawings even go in. If you’re weighing a garage conversion off Glades Road or a new detached ADU in Woodfield, call (877) 610-1318 and we’ll walk the site with you.
Why Barrett & Sons Construction Is Boca Raton’s Preferred Home Additions & ADU Company
Tom Barrett founded this company in 1998, and his sons run the crews. That matters in Boca Raton, where a contractor who doesn’t know the ARB submission calendar will bleed your timeline dry. We’ve gone through enough Mediterranean Revival design reviews in Boca Raton to know which Windows & Doors - Boca Raton profiles pass on the first submittal and which details send you back for another 90-day cycle. Homeowners in Boca Pointe, Broken Sound, and Camino Real have called us after national outfits handed them a quote that ignored Palm Beach County’s 150+ mph wind-load structural requirements entirely. That’s an expensive surprise when the permit review catches it.
Our Home Additions & ADU team is owner-operated, not a franchise dispatching strangers. Tom publishes his name, address, and license number. Look it up before you sign anything. Every change order arrives in writing before work proceeds, and every job carries the 90-Day Done Right Promise. If it’s not done right, Tom comes back.
We answer the phone live 24/7. When someone in the 33496 or 33487 zip codes calls about a sunroom or second story addition, they get a person, not a voicemail box. That’s not a perk. That’s how we run the business.
Our Home Additions & ADU Services in Boca Raton
ADU Design & Permitting
We design ADUs that clear Boca Raton’s ARB review the first time. That means our Roofing in Boca Raton uses barrel-tile profiles, smooth stucco finishes, and arched openings where the design code calls for them. We handle the full permit package, including the structural calcs for 150+ mph wind loads and the dewatering plan if your lot sits on the shallow water table that runs through most of the city. If you’re east of Federal Highway, we also coordinate with any condo association engineering requirements under Florida’s SB 4-D structural inspection law.
Garage Conversion ADU
Garage conversions in Boca Raton run $30,000 to $80,000, and the CBS-block construction common in 1970s and 1980s homes actually works in your favor here. Those concrete block walls take new openings cleanly when the lintels are spec’d right. We’ve converted garages in Boca Del Mar and Sandalfoot Cove where the water table sat just three feet below the slab, so we planned active dewatering into the scope rather than discovering it mid-project. That’s the difference between a written change order and a surprise invoice.
New Detached ADU
A new detached ADU in Boca Raton runs $90,000 to $220,000. Your lot’s setback lines, the ARB’s exterior material requirements, and the wind-load engineering all shape that number. We pull permits, we schedule inspections, and the inspector’s sign-off is part of the contract. The permit inspector works for you, not for me. That’s why I like him. Most Boca Raton projects also need dewatering during footing excavation, which we plan for in the initial scope, not in a change order delivered after the excavator hits groundwater.
Junior ADU & Interior Conversion
A junior ADU or interior conversion, often a bedroom-to-studio carve-out inside an existing floor plan, runs toward the lower end of the $45,000 to $130,000 range depending on plumbing placement. These projects still touch Boca Raton’s permitting process, and if you’re in a gated community like Woodfield, the HOA architectural committee may have its own submittal requirements that run parallel to the city’s. We coordinate both.
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 Boca Raton
We specify materials you can look up, not mystery brands off a van. On Boca Raton ADU projects we regularly install GAF roofing systems where the design calls for roof replacement as part of the addition, and we stock local parts for fast turnaround across Palm Beach County. If your addition ties into existing interior spaces, we also handle Kitchen Remodeling in Boca Raton and Bathroom Remodeling in Boca Raton so the new square footage flows into a finished home rather than stopping at an unfinished threshold.
Common Home Additions & ADU Problems We See in Boca Raton Homes
- ARB design cycles that stall projects for months. Contractors unfamiliar with Boca Raton’s mandated Mediterranean Revival aesthetic submit plans that get bounced back for the wrong stucco finish or window profile. We know the ARB submission calendar and design to the city’s standard from the first drawing.
- Shallow water table surprise during excavation. Most of Boca Raton sits on groundwater just two to four feet below grade. Footings and utility trenching often require active dewatering, and out-of-area contractors don’t plan for it. We do, and it’s in the written scope.
- Wind-load engineering gaps on openings and roof ties. Palm Beach County’s post-Andrew codes require 150+ mph design pressure on windows, doors, and roof connections. We’ve seen additions framed with the wrong ties that fail plan review. Ours don’t.
- CBS block wall modifications done without proper lintel sizing. The 1970s through 1990s concrete block homes that dominate west Boca need engineered lintels when you cut new openings between the addition and the original structure. Guesswork here creates cracks and callbacks. We engineer every opening.
Pricing for Home Additions & ADU in Boca Raton, FL
A room addition in Boca Raton runs $45,000 to $130,000. Detached ADUs run $90,000 to $220,000. Garage conversions run $30,000 to $80,000. Junior ADUs and interior conversions typically land between $45,000 and $100,000 depending on plumbing and electrical scope. What moves the number in Boca Raton specifically? ARB compliance materials like barrel-tile roofing and smooth stucco cost more than standard finishes, Boca Raton Kraftmaid service and wind-load-rated windows and doors add line items, and dewatering during excavation is a real cost that should be in the scope, not a surprise. Every allowance appears in writing. Every change order arrives before work happens. Call (877) 610-1318 for a free written estimate. We also offer a free second opinion on any written estimate you’ve received, and a permanent 10% discount for seniors and veterans.
We Also Serve Cities Near Boca Raton
Our crews serve Boca Raton and the surrounding communities of Boca Del Mar, Deerfield Beach, Sandalfoot Cove, and Kings Point. If you’re just west of Federal Highway or over the county line, we’re close by. Read more about our Home Additions & ADU in Boca Raton work or call us to schedule a site walk.
Serving Boca Raton, FL - Our Local Coverage Area
We’re based in the Boca Raton 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 Boca Raton
We typically begin site work within two to four weeks after contract signing, but the real timeline driver in Boca Raton is the ARB and permit review calendar. We submit to the city on their cycle, not ours. Call (877) 610-1318 and we’ll give you a straight answer on current review timelines for your specific neighborhood.
Yes. We work regularly in Boca Pointe, Woodfield, Camino Real, and Broken Sound, and we coordinate with each community’s HOA architectural review alongside the city’s permitting. If your addition needs dual approvals, we handle both tracks in parallel.
If your property falls under the city’s Architectural Review Board jurisdiction, yes. Boca Raton enforces a Mediterranean Revival aesthetic rooted in Addison Mizner’s 1920s master plan, and that means barrel-tile roofing, smooth stucco, and arched openings are design requirements, not suggestions. We design to that standard from the first drawing so you don’t burn a review cycle.
Boca Raton’s ARB compliance materials and wind-load engineering requirements do push certain line items higher than neighboring cities without a design review board. A detached ADU here runs $90,000 to $220,000. The number reflects materials and engineering, not markup. We give you every allowance in writing before the job starts.
Every Barrett & Sons job carries the written 90-Day Done Right Promise. If something isn’t done right, Tom comes back and fixes it, one call. We also stand behind the manufacturer warranties on the materials we install. Call (877) 610-1318 for details on your specific project.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Boca Raton and surrounding South Florida communities since 1998.