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 Royal Palm Beach
Home additions and ADU construction in Royal Palm Beach typically runs $45,000 to $130,000 for a room addition, and $90,000 to $220,000 for a full detached ADU depending on square footage, foundation work, and permitting requirements. Most Royal Palm Beach projects take 4 to 9 months from first walkthrough to final inspection. If you’re weighing whether to add on or build an ADU in Royal Palm Beach, call us at (877) 610-1318 and we’ll walk your lot, check the canal easements, and give you a straight number before you commit to anything.
We know this village’s housing stock block by block, and we know the permitting triggers that catch out-of-area crews who quote low and then hand you a change order when the inspector shows up. If you live west of Royal Palm Beach Boulevard or back up to one of the LWDD canals, your project has a different set of ground rules than a house on the coast. That local knowledge is the difference between a clean build and a stop-work order.
Why Barrett & Sons Construction Is Royal Palm Beach’s Preferred Home Additions & ADU Company
Barrett & Sons Construction was founded in 1998, and Tom Barrett’s name, address, and license number are published and verifiable. You can look us up before you sign anything, and you should. That level of transparency is rare in this trade, and it’s exactly what Royal Palm Beach homeowners tell us they want after dealing with outfits that quote one number on the phone and show up with another.
Our crews are background-checked and they carry the Barrett & Sons name on their uniforms every time they pull up to a job in Royal Palm Beach. Tom and his sons are on-site most days. This is not a franchise dispatching strangers to your house. It’s an owner-operated crew that answers our own phone, lives twenty minutes away, and wants to know if something isn’t right.
Every scope, every allowance, every price change arrives as a written change order before work happens. We pull permits and get inspections signed on every eligible job, because the last contractor most Royal Palm Beach customers used told them permits were optional. And every completed job is backed by our written 90-Day Done Right Promise: if it’s not done right, one call brings Tom back.
Our Home Additions & ADU Services in Royal Palm Beach
Here’s what we handle across Royal Palm Beach, including the 33421 ZIP and the canal-laced neighborhoods around it. Each of these starts with the same first step: a free walkthrough, a written scope, and a line-item quote you can actually read.
ADU Design & Permitting
Royal Palm Beach sits inside Palm Beach County’s jurisdiction for building permits, and the village’s older CBS tract homes trigger a specific set of upgrade requirements when you add square footage. We handle the full design and permitting path: site surveys, LWDD canal easement checks, structural drawings, and the county submittal package. If your property abuts a Lake Worth Drainage District lateral, we pull right-of-way clearance before we break ground, because skipping that step is how projects get shut down mid-build.
Garage Conversion ADU
Converting an existing garage to an ADU in Royal Palm Beach runs $30,000 to $80,000 depending on whether you’re adding a bathroom, a kitchenette, or upgrading the slab. Many of the garages in this village’s 1975-1995 homes were built with minimal insulation and no hurricane-rated garage door brackets, so a conversion often means opening walls to add strapping and tie-downs. That’s not scope creep. That’s what the permit inspector will require, and it’s better to know it before you start than after the drywall is up.
New Detached ADU
A new detached ADU in Royal Palm Beach typically runs $90,000 to $220,000, and the biggest variables are foundation type and site preparation. The village’s high seasonal water table and canal-adjacent lots mean your slab elevation and drainage plan have to be engineered, not guessed at. We coordinate with the LWDD, the county, and your HOA if you’re in one of the villa or townhome communities off Okeechobee Boulevard or Crestwood Boulevard, so there are no surprises when the first inspection rolls around.
Junior ADU & Interior Conversion
A junior ADU is a smaller, interior conversion, usually 400 to 700 square feet carved out of existing living space, a bonus room, or an oversized utility area. In Royal Palm Beach, this often means converting a den or a Florida room in one of the older CBS homes. The range lands between $45,000 and $90,000 depending on whether you need a separate entrance, a kitchenette, or a wet bar. These projects move faster than detached ADUs because there’s no new foundation and the building envelope already exists.
If your plans eventually extend beyond the ADU itself, our Home Additions & ADU team handles full room additions, second story additions, and sunrooms under the same written-scope process. We also handle Kitchen Remodeling in Royal Palm Beach and Bathroom Remodeling in Royal Palm Beach when the ADU is part of a larger whole-house plan, so you’re not juggling three contractors and three sets of excuses.
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 Royal Palm Beach
We install names you can look up, not mystery brands off a van. On Royal Palm Beach projects we regularly work with Simonton, PGT, and CGI impact-rated windows and doors, which matters here because any addition that touches the building envelope triggers the post-Andrew code requirements for wind-load ratings. These brands are stocked through local South Florida suppliers, which means shorter lead times for Royal Palm Beach customers than you’ll get from an out-of-area crew ordering blind. You can google the brands, check the specs, and know exactly what’s going into your house.
Common Home Additions & ADU Problems We See in Royal Palm Beach Homes
- Canal easement surprises: A meaningful share of Royal Palm Beach lots back up to LWDD lateral canals. Contractors who don’t pull right-of-way clearance before ground disturbance can trigger stop-work orders. We check the easement on day one, not day sixty.
- Code-triggered envelope upgrades: Pulling a permit on a 1970s or 1980s CBS home often means the inspector will require hurricane straps, updated roof decking attachment, and impact-rated windows on the new construction. Burned by a lowball quote? That’s usually where the missing allowance was hiding.
- High water table and drainage: Western Palm Beach County sits at the eastern edge of the Everglades water-management system, and Royal Palm Beach lots can hold water after one of those afternoon convective storms off the Everglades. Slab elevation and site drainage have to be engineered properly, or the ADU becomes a mold problem waiting to happen.
- Undersized electrical panels: Many of the 1975-1995 tract homes in Royal Palm Beach still carry 100 to 150 amp panels. Adding an ADU with a kitchenette, a mini-split, and a washer/dryer hookup often means a service upgrade before the county will sign off. We put that in the written scope up front, so it’s not a surprise invoice at the end.
Pricing for Home Additions & ADU in Royal Palm Beach, FL
A typical room addition in Royal Palm Beach runs $45,000 to $130,000. A garage conversion ADU lands between $30,000 and $80,000. A detached ADU starts around $90,000 and can reach $220,000 for a full one-bedroom with kitchen and bath. The range is driven by foundation work, plumbing rough-in distance, envelope upgrades, and whether your lot touches an LWDD canal. We don’t do vague allowances. Every scope, every finish, every price change arrives as a written change order before a single nail moves. Call (877) 610-1318 and we’ll give you a line-item number on your actual Royal Palm Beach lot, not a generic square-footage guess.
We Also Serve Cities Near Royal Palm Beach
Our crews serve Royal Palm Beach and the surrounding communities. We work regularly in Wellington, The Acreage, West Palm Beach, and West Gate. If you’re just over the line in one of those areas, the same written-scope process and the same 90-Day Done Right Promise apply. Call (877) 610-1318 and we’ll come take a look, no trip charge inside the county.
Serving Royal Palm Beach, FL - Our Local Coverage Area
We’re based in the Royal Palm 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 Royal Palm Beach
A room addition in Royal Palm Beach typically runs $45,000 to $130,000, while a new detached ADU ranges from $90,000 to $220,000. Your final number depends on foundation type, permitting triggers, and whether your lot touches an LWDD canal. Call (877) 610-1318 for an exact quote on your specific property, estimates are free.
Yes, we pull permits and get inspections signed on every eligible job. Royal Palm Beach’s older CBS housing stock means the county often requires hurricane straps, impact-rated windows, and updated roof decking attachment on addition work, and we build those requirements into the written scope before we start. The permit inspector works for you, not for us, and that’s exactly how we like it.
A detached ADU in Royal Palm Beach typically takes 6 to 9 months from permit submittal to final inspection. Interior conversions and junior ADUs move faster, often 3 to 5 months, because they don’t require new foundation work. Call (877) 610-1318 and we’ll give you a realistic schedule for your specific project.
That depends on your specific HOA. Royal Palm Beach has a large number of villa and townhome communities with their own covenants, and some of them restrict detached structures or separate entrances. We help you review your HOA documents and county requirements before you spend money on plans. Call (877) 610-1318 and we’ll walk through the process with you.
The 90-Day Done Right Promise is written on every contract, not buried in fine print. If something on your Royal Palm Beach addition or ADU isn’t done right within 90 days of completion, one call brings Tom Barrett back to make it right. No runaround, no out-of-state call center. Call (877) 610-1318 to schedule your free estimate and see the promise in writing.
Get Your Free Royal Palm Beach Estimate
If you’re ready to see what your addition or ADU will actually cost on your lot in Royal Palm Beach, call us at (877) 610-1318. We’ll walk the property, check the canal easement if you have one, and put the scope in writing before you spend another dollar guessing. Tom Barrett publishes his name, his address, and his license number. Around Royal Palm Beach, we’re the Home Additions & ADU in Royal Palm Beach crew your neighbors already know. Call us today for a free, line-item estimate.
Written by Tom Barrett, Owner at Barrett & Sons Construction.