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 Palm Beach Gardens
Home additions and ADU construction in Palm Beach Gardens typically run $45,000-$130,000 for an addition and $90,000-$220,000 for a detached ADU, with permitting timelines heavily shaped by HOA architectural review boards ahead of city approval. We know that because we work inside PGA National, BallenIsles, Mirasol, and the newer Avenir corridor every month, not once a year. If you’re planning a room addition, garage conversion, or a full detached ADU in the 33410 or 33418 zip codes, call (877) 610-1318 and we’ll walk the property with you, look at the HOA requirements, and give you a written line-item estimate before anything gets signed.
What fails first on a Palm Beach Gardens addition isn’t the framing or the drywall. It’s the hardware. Salt air off the Atlantic works its way inland, and electroplated fasteners, inland-grade aluminum window frames, and unsealed paver joints start showing their age within five to seven years. We’ll get into exactly what we specify instead, and what that upgrade costs, further down this page.
Why Barrett & Sons Construction Is Palm Beach Gardens’s Preferred Home Additions & ADU Company
We’re the crew that shows up with a written scope, a written allowance sheet, and a written change order process before a single nail moves. Tom Barrett founded this company in 1998, and his sons run the crews. That’s not marketing copy: it’s why the name on the truck matches the name on the contract, and why Tom answers calls himself when something needs attention.
In Palm Beach Gardens specifically, we’ve learned that the HOA architectural review board is the first gatekeeper, not the city. A contractor who’s never worked inside BallenIsles or Mirasol will submit plans to the city, wait two weeks, and then find out the HOA hasn’t even seen the elevation drawings. That’s the kind of delay that turns a four-month project into a nine-month one. We handle both approvals in parallel from day one, because we’ve done it enough times to know the sequence.
Our Home Additions & ADU team carries background-checked crew members on every visit, and every eligible job includes permits pulled and inspections signed. If the inspector finds something, we fix it before it becomes your problem. That’s how it works when the permit inspector works for you, not for us.
We publish Tom Barrett’s name, address, and license number. Look them up before you sign anything. We’re also the only crew we know of in the Palm Beach Gardens market that puts the 90-Day Done Right Promise in writing on every contract: if something isn’t right, one call brings Tom back.
Our Home Additions & ADU Services in Palm Beach Gardens
Here’s what we handle most often for homeowners in the 33410 and 33418 corridors. Each of these projects starts with a site visit, a review of your HOA’s architectural guidelines if you’re in a gated community, and a written estimate that breaks down every line item.
ADU Design & Permitting
In Palm Beach Gardens, an ADU isn’t just a construction project. It’s a paperwork project with two queues: the HOA architectural review board and the city’s building department. We prepare both submittals at the same time, and we’ve learned which communities want elevations rendered a certain way, which want specific roofing profiles to match the main house, and which will reject a window package on finish color alone. A Junior ADU or interior conversion inside a gated community often takes three to six weeks just for HOA review. We factor that into the schedule so you’re not surprised.
Garage Conversion ADU
Converting an attached garage into a one-bedroom ADU runs about $30,000-$80,000 in Palm Beach Gardens, depending on whether you’re adding a bathroom, upgrading to impact-rated windows, and how much electrical work the existing panel will carry. Older concrete block homes in eastern 33410 often have panels that need a subpanel upgrade before the conversion passes inspection. We’ll tell you that in the estimate, in writing, before you commit.
New Detached ADU
A ground-up detached ADU in Palm Beach Gardens runs $90,000-$220,000. That range reflects the gap between a code-minimum one-bedroom structure and a finished unit with a kitchen, hurricane-impact windows, and a sealed paver entry. In western 33418 near Avenir, the water table sits high enough that slab design and drainage planning matter as much as the framing. We over-excavate, spec compacted fill, and install drainage that keeps water moving away from the slab.
Junior ADU & Interior Conversion
A Junior ADU is the fastest path to a rental unit or in-law suite inside your existing footprint. In Palm Beach Gardens, that usually means converting a portion of the main house into a self-contained space with its own entrance, kitchenette, and bath. Because it’s an interior conversion, HOA review tends to be lighter, but the city still wants a full permit and inspection. We’ve done enough of these in PGA National and Frenchman’s Creek to know exactly what the inspectors look for.
Sunrooms & Enclosed Patios
Palm Beach Gardens has a year-round outdoor living culture, and a properly permitted sunroom adds conditioned square footage without the full cost of a stick-built addition. The catch is salt air. We spec marine-grade aluminum frames, stainless hardware, and impact-rated glazing as standard. In Mirasol, the HOA will review your window and door package against the community’s hurricane-impact standards before the city even looks at it. We submit accordingly.
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 Palm Beach Gardens
We install materials you can look up, not mystery brands off a van. For Palm Beach Gardens additions and ADUs, that means Andersen impact-rated windows on many enclosures, GAF roofing on detached structures and sunroom roofs, and Schluter waterproofing systems in any ADU bath or kitchenette. We stock common replacement hardware locally so a punch-list fix doesn’t wait on a freight truck from out of state. When salt air is part of the equation, the hardware spec is the difference between a five-year product and a thirty-year one.
Common Home Additions & ADU Problems We See in Palm Beach Gardens Homes
- Inland-grade aluminum window frames in eastern 33410. Salt air pits the frames within five to seven years, and by the time you notice, the HOA wants a full re-review of any replacement package. We spec marine-grade or impact-rated frames from the start.
- Electroplated hardware on second-story decks near PGA National. Fasteners rust and shear after a few hurricane seasons, and that’s a structural problem, not a cosmetic one. We use hot-dip galvanized fasteners and stainless steel ties on any elevated addition.
- High water table near Avenir in western 33418. A detached ADU’s subfloor deck and slab need proper drainage planning. Without a sealed paver joint plan and compacted fill, the slab heaves and cracks within three years.
- HOA approval sequenced wrong. Contractors unfamiliar with Palm Beach Gardens submit to the city first, then discover the HOA hasn’t approved the design. That delay alone can add six to eight weeks. We run both approvals together.
Pricing for Home Additions & ADU in Palm Beach Gardens, FL
Here’s what we quote most often in Palm Beach Gardens. These are written, line-item ranges from our current estimates, not ballpark phone numbers:
| Project | Palm Beach Gardens Range |
|---|---|
| Home Addition | $45,000-$130,000 |
| ADU Construction | $90,000-$220,000 |
| Garage Conversion ADU | $30,000-$80,000 |
| Impact Window Installation | $8,000-$25,000 |
| Aluminum Fence Installation | $4,000-$10,000 |
What moves the number is the coastal-spec upgrade. Stainless steel ties, hot-dip galvanized fasteners, marine-grade window frames, and sealed paver joints all cost more than the inland spec, and every one of them is cheaper than replacing the cheap version within a decade. We’ll show you both numbers on the estimate. You decide. Call (877) 610-1318 for your free estimate, and ask about the Senior & Veteran 10% discount if it applies.
We Also Serve Cities Near Palm Beach Gardens
We work regularly in Palm Beach Gardens and the surrounding communities, including Lake Park, North Palm Beach, Riviera Beach, and The Acreage. If you’re in one of those areas and planning an addition or ADU, the same crew, the same written change order process, and the same 90-Day Done Right Promise apply.
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
Yes. In BallenIsles and most gated golf communities in Palm Beach Gardens, the HOA architectural review board must approve any exterior construction before the city will issue a permit. That includes ADUs, detached structures, sunrooms, and even window package changes. We prepare both submittals simultaneously and have worked with BallenIsles’ review standards enough to know what gets rejected on first pass and how to avoid it. Call (877) 610-1318 and we’ll walk you through the exact sequence for your street.
A coastal-spec addition in Palm Beach Gardens typically runs 10-20% more than the same floor plan built inland because of the hardware: hot-dip galvanized fasteners instead of electroplated, stainless steel ties, marine-grade aluminum window frames, and impact-rated glazing. The cheap version fails in five to seven years from salt air, and the repair bill plus HOA re-approval costs more than the upgrade would have. We show both numbers on every estimate, in writing.
The high water table in the flat, low-lying western sections near Avenir means a detached ADU’s slab and subfloor need over-excavation, compacted fill, and a drainage plan before concrete is poured. Without it, the slab heaves and cracks within three years. We design for drainage first on every Avenir project, and it’s part of the written estimate, not a change order later.
Yes, in most cases. A garage conversion into a Junior ADU inside a gated community like Mirasol or PGA National is allowed, but the HOA will review the exterior changes, including any new door or window openings, and the city will require a full permit and inspection. The garage conversion itself typically runs $30,000-$80,000, depending on whether you’re adding a bathroom, upgrading electrical, and installing impact windows.
The fastest path is to submit the HOA architectural package and the city permit application at the same time, with the window and door package specified to Mirasol’s hurricane-impact and finish standards from the first submittal. A rejection on the first pass adds three to four weeks. We’ve done this enough in Mirasol to know which window packages pass review without a second round. Call (877) 610-1318 and we’ll get your submittal moving this week.
Contact Barrett & Sons Construction
If you’re planning a home addition, ADU, garage conversion, or sunroom in Palm Beach Gardens, call (877) 610-1318. We’ll schedule a site visit, review your HOA requirements if you’re in a gated community, and give you a written line-item estimate. Free Second Opinion on any written estimate. No Trip Charge inside the county. Ask about the $40 Off Any Repair Over $200 and the permanent Senior & Veteran 10% discount.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Palm Beach Gardens since 1998.