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 Del Mar
Adding square footage in Boca Del Mar usually falls between $45,000 and $130,000 for a room addition, while a full detached ADU runs $90,000 to $220,000. The price depends on whether you’re looking at a garage conversion, a second story, or a brand new structure in the backyard. Before you sign anything, call (877) 610-1318 and talk it through with someone who’s actually built in this community. You won’t get a call center or a salesman reading from a script.
We work in our Roofing in Boca Del Mar every week. We know the 33433 ZIP, we know the CBS construction that defines most homes off Palmetto Park Road and along Powerline, and we know exactly how Palm Beach County permitting works here. That local knowledge matters more than most homeowners realize until it’s too late.
Why Barrett & Sons Construction Is Boca Del Mar’s Preferred Home Additions & ADU Company
Tom Barrett founded this company in 1998, and his sons run the crews. We’re not a franchise pumping out jobs from a spreadsheet in another state. When a Boca Del Mar homeowner calls, a live person answers, 24 hours a day, seven days a week. That’s not a promise we make lightly. It’s how Tom runs things.
Every job we take on in Boca Del Mar starts with permits pulled and ends with inspections signed. We’ve watched too many homeowners get burned by contractors who told them permits were “optional.” In Palm Beach County, they aren’t. The permit inspector works for you, not for us. That’s why we want them on the job. Every scope change arrives as a written change order before work proceeds. No surprise invoices at the end. Ever.
We back every project with our 90-Day Done Right Promise, written on the contract, not hidden in fine print. If something isn’t right, Tom comes back and makes it right. One call. Ask anyone who’s worked with us. You can also look up Tom’s name, address, and license number yourself before you sign anything. That’s the kind of transparency we think you deserve.
Our Home Additions & ADU Services in Boca Del Mar
ADU Design & Permitting
Boca Del Mar sits in unincorporated Palm Beach County, which means your ADU plans route through county planning and building, not a Boca Raton municipal desk. That distinction trips up out-of-area crews constantly. We know the fee schedule, the inspection checklists, and the people involved. A detached accessory dwelling unit in a Boca Del Mar backyard typically runs $90,000 to $220,000, and we handle everything from first sketch to final inspection.
What we hear from most homeowners in this area is that the design phase matters as much as construction. Getting the setbacks right against a canal lot or a zero-lot-line villa off West Palmetto Park Road requires someone who’s solved these problems before. Our Home Additions & ADU team handles it the same way Tom did in 1998: scope in writing, allowances in writing, every change order in writing.
Garage Conversion ADU
Garage conversions in Boca Del Mar run $30,000 to $80,000, and they’re often the fastest route to an income-producing unit or a place for aging parents. Most garages here sit on slab foundations tied to the original CBS structure, which is a good starting point. But the existing concrete tie-beam often needs connector retrofits to meet current hurricane code once you convert the space to living quarters.
We’ve seen garage conversions in the neighborhoods off Camino Real and along the 33433 corridor that started with other contractors and stalled at the county inspection. You don’t want that. A failed inspection here isn’t a small delay. Palm Beach County runs on a different portal and a different checklist than Boca Raton, and if your contractor doesn’t know that, you’ll be the one waiting.
New Detached ADU
A new detached ADU in Boca Del Mar is typically $90,000 to $220,000, and it’s the option that gives you the most flexibility. You get a clean footprint, proper setbacks, and a structure built to the current high-velocity hurricane zone code from day one. There’s no retrofitting old blockwork to modern standards.
The shallow water table here, often just two to four feet below grade, means any foundation work or utility trenching requires dewatering planning from the start. That’s not a problem if you anticipate it. It becomes a big one if you don’t.
Junior ADU & Interior Conversion
A junior ADU, or an interior conversion of an existing bedroom or bonus room into a self-contained unit, is often the most budget-friendly path for Boca Del Mar homeowners. These projects frequently run at the lower end of the $45,000 to $130,000 range for substantial additions. We also regularly tie these conversions into larger Kitchen Remodeling in Boca Del Mar work, especially when the conversion opens up space for a better kitchen footprint. If you’re adding a full bath to the conversion, our Bathroom Remodeling in Boca Del Mar crew steps in.
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 Del Mar
We don’t install mystery materials off a van. For hardscape and paver work tied to additions or ADU site prep, we use brands you can look up: Techo-Bloc, Cambridge Pavers, and Quikrete for structural base material. When your addition needs a patio, walkway, or driveway rework after the build, you’ll know exactly what’s going into the ground. We keep a steady supply flow for Boca Del Mar jobs, running logistics from our South Florida office so crews aren’t waiting on materials.
Common Home Additions & ADU Problems We See in Boca Del Mar Homes
- Hurricane-tie-down retrofits.Most 1970s and 1980s CBS homes in Boca Del Mar were built before current Palm Beach County wind-load requirements. Once your addition crosses the county’s cost threshold, you’ll be required to retrofit roof-to-wall connectors on the entire existing structure. Budget for this before you sign anything.
- Shallow water table surprises.Groundwater at two to four feet below grade is normal here. Any addition with a stem wall, footing, or utility trench needs dewatering. A contractor who doesn’t plan for this will discover it the hard way.
- Unincorporated jurisdiction confusion.Boca Del Mar is not within Boca Raton city limits. Contractors who file city permits here get rejected. County permits have different requirements, different fees, and different inspectors. We’ve corrected the paperwork on jobs other crews started wrong.
- Impact-rated opening upgrades.Current code requires impact-resistant windows and doors on any permitted addition. That’s actually a long-term win for you, it lowers insurance premiums. But it’s a real cost line item that should be on your estimate from day one.
Pricing for Home Additions & ADU in Boca Del Mar, FL
Room additions in Boca Del Mar run $45,000 to $130,000. Detached ADUs start around $90,000 and can reach $220,000 depending on size, finishes, and site conditions. Garage conversions fall between $30,000 and $80,000. Junior ADUs and interior conversions usually land at the lower end of the room addition range. What moves the number: existing structure condition, hurricane retrofit scope, foundation work against the shallow water table, and whether you add a kitchen or full bath. We provide free, written estimates with no change orders unless you approve them in writing first. Call (877) 610-1318 to schedule yours. We also offer a free second opinion on any written estimate you’ve received from another contractor, and a permanent 10% senior and veteran discount.
We Also Serve Cities Near Boca Del Mar
While this page focuses on Boca Del Mar, our crews regularly work in Boca Raton proper, Sandalfoot Cove, Deerfield Beach, and Lighthouse Point. If you’re on the edge of 33433 or just outside it, call (877) 610-1318 and we’ll tell you plainly whether we can get to you. No runaround.
Serving Boca Del Mar, FL - Our Local Coverage Area
We’re based in the Boca Del Mar 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 Del Mar
Start times depend on the permitting queue at Palm Beach County and the scope of your project. After we complete your design and submit plans, county review typically takes several weeks. We give you a written timeline before any contract is signed, and we stick to it. Call (877) 610-1318 for a free estimate and a realistic start window for your specific street.
Yes. Every eligible job includes permits pulled and inspections signed. Boca Del Mar is unincorporated, so everything routes through county channels, not Boca Raton city hall. We handle that entire process. If a contractor tells you permits aren’t necessary for your addition, walk away. That advice will cost you more later.
Only if you approve a written change order first. We don’t send surprise invoices. Every allowance, every scope adjustment, every material substitution arrives in writing before any work changes. An allowance that isn’t on paper is a surprise waiting for a date. That’s not how we operate.
Costs run fairly close across South Palm Beach County, but Boca Del Mar’s older CBS housing stock often adds hurricane-retrofit scope that newer construction doesn’t require. A room addition here runs $45,000 to $130,000. A detached ADU runs $90,000 to $220,000. We’ll give you an exact number for your property with a free on-site estimate. Call (877) 610-1318.
Every project carries our 90-Day Done Right Promise, written on the contract. If something isn’t done right, Tom comes back and makes it right. One call to (877) 610-1318. That promise means more when the owner lives twenty minutes away and you’ll see him at the hardware store on Saturday.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Boca Del Mar and surrounding South Florida communities since 1998.