Fast, Reliable New Detached ADU Across Palm Beach Gardens
A new detached ADU in Palm Beach Gardens typically runs $185,000-$310,000 all-in, from the first site survey through the final inspection, depending on whether you’re building custom on a slab, installing a prefab unit, or going modular. The number Palm Beach Gardens homeowners actually need to verify before signing anything is the wind-load rating on the drawings. Florida Building Code puts Palm Beach County in a high-velocity wind zone, and a quote that doesn’t include 160-175 mph engineering will not pass plan review here. Call (971) 497-2402 for a written price before any work starts, per Haven Standard Clause 1.
Ellery ADU Studio has operated as a design-build studio since 2015, and our New Detached ADU team handles drawings, permitting, and construction under one contract at one written price. For homeowners in Palm Beach Gardens, that single contract matters more than anywhere else in the county because you’re navigating two separate approval tracks: city plan review and your HOA architectural committee. We coordinate both, in the right order.
Why Ellery ADU Studio Is Palm Beach Gardens’s Preferred New Detached ADU Company
Nadia Ellery founded this studio on a simple observation: most ADU projects fail because the designer and the builder were never on the same contract. When the drawings don’t match the finished unit, each points at the other. We eliminated that gap. Since 2015, we’ve designed, permitted, and built 900+ ADUs, every one with a written price before work started and a documented photo record on every visit.
In Palm Beach Gardens specifically, we’ve spent years working inside the HOA communities that define this city: PGA National, BallenIsles, Ibis, Mirasol, Evergrene. We know which architectural committees require wind-mitigation documentation before they’ll even review an ADU application. We know which ones still reflexively deny despite state law, and we know how to build the appeal package. No other firm serving Palm Beach Gardens has our depth of HOA sequencing experience combined with an in-house permit set practice.
Our crews are background-checked and uniformed. Our license number appears on every page. A live person answers calls 24/7. And under the 365-Day Done Right Promise, if the finished ADU is not built to the permitted drawings, we make it right, in writing, before the project starts.
Our New Detached ADU Services in Palm Beach Gardens
Prefab ADU Installation
Prefab is the fastest route to a detached ADU in Palm Beach Gardens, but only if the unit is specified for Florida wind loads. We coordinate units from Abodu, Cover, and Dvele, and every submittal package we prepare for Palm Beach Gardens plan review includes 160-175 mph wind-rated glazing, connections, and envelope details. Communities like PGA National and BallenIsles often ask for wind-mitigation documentation before issuing architectural approval, and we provide that as a matter of routine.
A prefab ADU installation in Palm Beach Gardens typically runs $170,000-$265,000 including the unit, site work, foundation, utility connections, and permit set. The foundation is line-itemed separately because the water table across the western PBG corridor changes what’s required, and we don’t hide that in a lump sum.
Modular ADU
Modular construction gives you more layout flexibility than a single prefab unit, and it’s a better fit for the awkward side and rear yard constraints common on CBS lots built between the late 1970s and 2000s. In Palm Beach Gardens, where master-planned communities were originally drawn without secondary units in mind, modular lets us configure around plat-defined setbacks and lot coverage limits.
A modular detached ADU in Palm Beach Gardens typically runs $195,000-$310,000 depending on bedroom count and finish level. We specify and coordinate Dvele and Plant Prefab systems within the same single contract, so the unit manufacturer, the engineer, and the site crew are all on one line of accountability.
Studio ADU
A studio ADU is the most common detached unit we build in Palm Beach Gardens, usually running $155,000-$220,000. It fits the lots in communities like Mirasol and the neighborhoods off PGA Boulevard where a full one-bedroom footprint would push past side-yard setbacks. The trade-off is square footage, not build quality: same wind-rated envelope, same foundation scrutiny, same inspection sequence.
We’ve built studio units behind existing CBS homes throughout Palm Beach Gardens, and the biggest lesson is that a smaller footprint doesn’t mean a smaller permit hurdle. The HOA and the city still require the same engineering. What changes is the foundation spec and the utility run.
1-Bed & 2-Bed ADU
One-bedroom and two-bedroom detached ADUs in Palm Beach Gardens run $220,000-$340,000 and $275,000-$410,000 respectively. These are the units homeowners weigh as long-term assets, rental income, or extended-family housing, and they’re the ones where HOA covenant friction hits hardest. A two-bedroom footprint in BallenIsles or Ibis almost always requires a setback variance, the extra distance the city requires between your new ADU and the property line, and we prepare that variance package as part of the permit set.
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 specify and coordinate prefab and modular systems from James Hardie, Abodu, Cover, and Dvele, among others. The brand matters less than the engineering package behind it. In Palm Beach Gardens, a Cover unit rated for California wind loads won’t pass plan review here; the wind-borne debris region requires 160-175 mph rated glazing and connections. We handle that specification so you never have a paid-for unit sitting in a warehouse because the submittal got rejected. When you work with us on a New Detached ADU in Palm Beach Gardens, the brand, the engineering, and the installation live on the same written scope.
Common New Detached ADU Problems We See in Palm Beach Gardens Homes
- HOA denial after city permit fees are already paid. A homeowner files for a city building permit before getting HOA architectural approval. The committee denies the project 60 days later, after construction drawings are already paid for. The permit fee is gone, and the HOA clock resets 90 days. We sequence HOA approval first, before any city filing.
- Out-of-state prefab units with 140-mph wind ratings. A contractor quotes an out-of-state unit at a tempting price. Palm Beach Gardens plan review rejects the submittal because the wind-borne debris region requires 160-175 mph rated glazing and connections. Now the homeowner owns a unit that can’t legally be installed here.
- Slab-on-grade foundations near the Loxahatchee preserve corridor. The western PBG corridor has a seasonally elevated water table. A slab poured without mounded fill or French drains shows efflorescence and door swelling after the first wet season. The HOA then flags the unapproved exterior repair, and the homeowner is in violation while still paying a mortgage on the unit.
- Garage conversions blocked by HOA finish standards. Many Palm Beach Gardens homeowners pivot to garage conversions when setback limits kill a detached footprint, only to discover the golf community architectural standards regulate exterior finishes and entry visibility. A conversion that changes the streetscape can trigger the same 30-90 day review gauntlet as a full detached unit.
Pricing for New Detached ADU in Palm Beach Gardens, FL
A new detached ADU in Palm Beach Gardens runs $155,000-$410,000 depending on size, foundation type, and whether you go custom, prefab, or modular. Studio units start around $155,000. One-bedrooms run $220,000-$340,000. Two-bedrooms run $275,000-$410,000. Prefab installations typically land between $170,000 and $265,000. Every dollar figure on this page includes the permit set, the drawings, the engineering, and the written line-item scope, per Haven Standard Clause 1.
What moves the number in Palm Beach Gardens specifically: wind-load engineering is non-negotiable and adds $3,000-$7,000 to the design cost versus counties outside the high-velocity wind zone. HOA submittal packages, when required, run $800-$2,500 depending on the committee’s documentation demands. Foundation work near the Loxahatchee corridor adds $4,000-$12,000 for mounded fill or French drains. Call (971) 497-2402 for a written price on your specific lot. Estimates are free, and the number you receive is the number you pay.
We Also Serve Cities Near Palm Beach Gardens
Ellery ADU Studio serves New Detached ADU in Palm Beach Gardens and the surrounding communities: Jupiter, West Palm Beach, Wellington, and Lake Worth. The wind-load requirements are county-wide, but every city has its own plan review quirks and every HOA has its own approval gauntlet. We handle the full sequence wherever your lot 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 - New Detached ADU in Palm Beach Gardens
Yes, the city can issue a building permit even if your HOA denies the ADU, because the city does not enforce private covenant restrictions. But that does not protect you from HOA penalties, fines, or legal action; many Palm Beach Gardens HOA boards pursue enforcement independently. Call (971) 497-2402 before you file anything, and we’ll help you sequence the HOA package and understand your appeal rights.
Palm Beach County sits in a high-velocity wind zone, and Florida Building Code requires all ADU structures, including prefab and modular units, to meet wind resistance standards designed for 160-175 mph gusts. That means wind-rated glazing, rated connections, and a compliant envelope. A quote from out-of-state that doesn’t include this engineering will fail plan review in Palm Beach Gardens. Get a written price that itemizes the wind-load package: (971) 497-2402.
No. Boxabl and Tuff Shed units are not engineered to Palm Beach County’s wind-borne debris requirements out of the box, and BallenIsles’ architectural review committee will require separate wind-mitigation documentation before even reviewing the application. A unit that lacks the proper rating cannot be legally installed as a dwelling unit here. Call (971) 497-2402 and we’ll tell you exactly what engineering your chosen unit would need.
The seasonally elevated water table across the western PBG corridor near the Loxahatchee preserve limits foundation options and requires careful drainage planning to avoid chronic moisture intrusion. We raise sonotube footings above the seasonal water table where site conditions demand it, and we specify French drains and mounded fill where slab-on-grade is the only workable option. Talk to us before you pour: (971) 497-2402.
Yes, in most cases a documented wind mitigation report showing rated glazing, connections, and envelope details can reduce your Palm Beach Gardens homeowners insurance premium. Insurers in Palm Beach County often require the report before a policy is renewed on a property with a secondary dwelling. We provide the stamped wind mitigation documentation as part of the finish package. Call (971) 497-2402 for your free estimate.
Written by Nadia Ellery, Owner at Ellery ADU Studio, serving Palm Beach Gardens since 2015.