Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Home Additions & ADU Across Palm Beach Gardens
A home addition in Palm Beach Gardens typically runs $45,000-$130,000, while a detached ADU usually lands between $90,000 and $220,000 depending on site conditions and finishes. Those numbers reflect real project scopes we price every month across the 33410 and 33418 corridors. If your current home doesn’t fit the way you live anymore, adding square footage often beats searching for something larger in this market. Call (877) 610-1318 and we’ll walk the property with you, then put everything in writing before a single permit gets pulled.
Why Barrett & Sons Construction Is Palm Beach Gardens’s Preferred Home Additions & ADU Company
Tom Barrett founded this company in 1998, and his sons run the crews that work inside PGA National, Mirasol, BallenIsles, and the newer sections out near Avenir. That matters in Palm Beach Gardens because every gated community here has its own architectural review board, and each one wants to see a contractor who knows the drill before the city even looks at your plans. We register vehicles, workers, and equipment with community security daily, and we’ve sat through enough ARB meetings to know how to present a scope that gets approved the first time.
Homeowners across Palm Beach Gardens call us for Home Additions & ADU work because we publish Tom’s name, address, and license number, and because a live person answers the phone 24 hours a day. Our background-checked crew members carry the Barrett & Sons name on their uniforms. Every price change arrives as a written change order before work proceeds, and every job is backed by our 90-Day Done Right Promise. One call brings Tom back if something isn’t right.
Our Home Additions & ADU Services in Palm Beach Gardens
ADU Design & Permitting
Palm Beach Gardens requires two approvals on most ADU projects: the community ARB signs off first, then the city issues the permit. We handle both tracks. Our design work anticipates the Florida Building Code wind-load and impact-resistance requirements that Palm Beach County has enforced since the 2004-2005 hurricane seasons, so plans don’t kick back for revisions after you’ve already spent weeks waiting on an ARB hearing.

Garage Conversion ADU
Many older concrete block homes in eastern 33410 have oversized garages that convert cleanly into a one-bedroom unit. A garage conversion ADU in Palm Beach Gardens typically runs $30,000-$80,000 depending on whether you’re adding a kitchenette, a bath, or just finishing the shell. We pull permits, bring plumbing and electrical up to code, and install impact windows so the finished unit meets the same standard as the main house.

New Detached ADU
A ground-up detached ADU out near Avenir or on a larger lot in western 33418 often needs careful drainage planning because of the high water table in the flat western sections. We coordinate site prep and utilities before the slab goes in, and we price the project with allowances in writing so you know exactly what your finishes cost. Detached ADUs in Palm Beach Gardens run $90,000-$220,000 for most builds.

Junior ADU & Interior Conversion
If you have a bonus room, enclosed patio, or underused den, a junior ADU is the most budget-friendly path to a rentable or guest-ready space. These interior conversions in Palm Beach Gardens often fall between $45,000 and $130,000 depending on plumbing runs and whether you need a separate entrance. We handle everything from framing the kitchenette to the final inspection sign-off.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Palm Beach Gardens
We install materials you can look up, not mystery brands off a van. On Palm Beach Gardens additions and ADUs, you’ll see names like Schluter in wet areas, Grohe fixtures in baths, and GAF roofing systems on new structures. Local suppliers stock these lines throughout Palm Beach County, which means fewer days waiting on material and fewer surprises on your timeline. We’ll name every brand in your written scope before work starts.
Common Home Additions & ADU Problems We See in Palm Beach Gardens Homes
- HOA architectural review stalls. Communities like PGA National and Frenchman’s Creek move at their own pace, and an out-of-county contractor who files plans late can lose you three weeks before the city even sees the paperwork. We file ARB packages first, then pursue the city permit.
- Impact glass complications on older 1960s-70s homes. Eastern 33410 has plenty of MacArthur-era concrete block homes where a room addition means matching hurricane-impact glazing to existing openings. Mixing old non-impact windows with new impact ones can compromise your wind mitigation credit.
- High water table in western 33418. Flat land near Avenir holds water after heavy rain, and slab work needs proper drainage planning before a footing goes in. Skipping that step leads to shifting slabs and cracked tile inside a two-year-old ADU.
- Under-scoped electrical panels. Adding a full ADU often requires a service upgrade, and older Palm Beach Gardens homes with 100-amp panels can’t carry a second kitchen and AC unit. We check panel capacity during the estimate, not after demo starts.
Pricing for Home Additions & ADU in Palm Beach Gardens, FL
A room addition in Palm Beach Gardens runs $45,000-$130,000 for most scopes, while a full detached ADU lands between $90,000 and $220,000. Garage conversions sit in the $30,000-$80,000 range. What moves the number? Site access on a tight gated lot, the age of your existing electrical panel, ARB-mandated exterior finishes, and whether you’re building on a slab or pier foundation. Every scope we write includes allowances in writing and written change orders before anything changes. Call (877) 610-1318 for a free estimate and a line-item price you can actually compare.
We Also Serve Cities Near Palm Beach Gardens
Our crews work throughout northern Palm Beach County. If you’re in Lake Park, North Palm Beach, Riviera Beach, or The Acreage, you’re inside our regular service area for Home Additions & ADU in Palm Beach Gardens and surrounding communities. Same written-scope process, same 90-Day Done Right Promise. Call (877) 610-1318 and we’ll schedule a walkthrough wherever your property sits.
Serving Palm Beach Gardens, FL - Our Local Coverage Area
We’re based in the Palm Beach Gardens 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 Palm Beach Gardens
Plan on two to four weeks for permits and ARB approvals before construction begins, depending on your community’s review schedule. We start by filing with your HOA’s architectural board, then move to the city. Call (877) 610-1318 and we’ll give you a realistic start date for your specific street.
Yes, we work inside every major gated community in Palm Beach Gardens, including PGA National, Mirasol, BallenIsles, and Frenchman’s Creek. We register vehicles, workers, and equipment with security daily and handle the ARB approval package before the city permit is pulled. Call (877) 610-1318 to schedule a site visit.
A garage conversion ADU in Palm Beach Gardens typically costs $30,000-$80,000. The range depends on kitchenette scope, bath fixtures, impact window count, and whether your panel needs an upgrade. We price every allowance in writing before work starts. Call (877) 610-1318 for a free line-item estimate.
Yes, under Palm Beach County’s enforced Florida Building Code, any permitted addition or ADU must meet current wind-load and impact-resistance standards. That means impact windows and doors on new openings, and matching glazing where the addition ties into existing structure. We’ll spec it all out in your written scope.
Every Barrett & Sons project carries our 90-Day Done Right Promise in writing. If anything isn’t right, Tom comes back and makes it right with one phone call. We also stand behind every permit and inspection we sign. Call (877) 610-1318 and ask us about the warranty before you sign anything.
We also handle Kitchen Remodeling in Palm Beach Gardens and Bathroom Remodeling in Palm Beach Gardens when your addition includes those trades. Same written change orders, same named brands, same owner on site.
Ready to talk scope, allowances, and a real start date? We serve all of Palm Beach Gardens, from the waterfront sections of 33410 to the new construction corridors out past Avenir in 33418. Call (877) 610-1318 now. A live person picks up, and your estimate is free.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Palm Beach Gardens with written scopes, pulled permits, and the 90-Day Done Right Promise.







Before
After
Before
After
Before
After