Fast, Reliable New Detached ADU Across Boca Raton
A new detached ADU in Boca Raton typically runs $185,000 to $310,000 all-in, drawings through final inspection, depending on square footage, finish level, and whether your community’s Architectural Review Committee requires specific exterior materials. That price should be written down before any work starts. If it isn’t, you’re working with the wrong outfit.
We work across Boca Raton daily, from the gated communities off Yamato Road to the older CBS-block neighborhoods near Royal Palm Yacht & Country Club. The single factor that trips up more Boca Raton ADU projects than any other is the two-tier approval sequence: your HOA’s Architectural Review Committee signs off first, then the City of Boca Raton issues the permit. Miss that order and you’re holding a valid city permit you can’t legally act on. Call (971) 497-2402 and we’ll walk you through the sequence before you spend a dollar on drawings.
Why Ellery ADU Studio Is Boca Raton’s Preferred New Detached ADU Company
Ellery ADU Studio has designed, permitted, and built over 900 ADUs since 2015 under one contract at one written price. In Boca Raton, that single-contract model matters more than in most markets, because the designer-versus-builder blame gap is exactly where HOA-related change orders tend to appear. We handle the drawings, the permit set, the HOA submittal packet, and the construction. One contract. One written price.
Nadia Ellery founded the studio with a simple position: the permit set is the product, not an afterthought. That’s why every Boca Raton project starts with a covenant analysis of your community’s deed restrictions before we produce a single elevation drawing. We’ve seen Architectural Review Committees in communities like Boca West and Broken Sound deny detached ADUs on aesthetic covenant grounds even after the City of Boca Raton issued a building permit. That’s a five-figure mistake we prevent on the front end.
Our crews serving Boca Raton are background-checked and uniformed, and our license number appears on every page of your contract and permit documents. A live person answers our phones 24/7, and every project includes a documented photo record on every visit. Under Clause 5 of The Haven Standard, the scope is locked at signing. No door-side upsells, no scope creep.
Our New Detached ADU Services in Boca Raton
Every detached ADU we build in Boca Raton starts with the same first step: written HOA approval before the city application is filed. Here’s how each service type plays out in this market.
Custom Built ADU in Boca Raton
A custom built detached ADU in Boca Raton gives you full control over layout, roofline, and exterior finish, which is useful when your HOA’s design guidelines specify particular colors, roof pitches, or cladding. Most custom builds here fall in the $210,000 to $310,000 range for a one- or two-bedroom between 600 and 1,000 sq ft. We produce the full permit set, the HOA submittal package, and the construction under one contract, so nothing falls between a designer and a builder.
Prefab ADU Installation in Boca Raton
Prefab ADU installation in Boca Raton typically runs $185,000 to $260,000 for a factory-built 1-bed or 2-bed unit, including site work, foundation, and utility connections. We specify and coordinate systems from Abodu, Cover, and Dvele within the same single contract. In Boca Raton’s high-velocity hurricane zone, prefab units must still meet the 150 to 175 mph wind-load design pressures in the Florida Building Code, so the foundation anchoring and tie-down detail is not something to leave to a generic installer.
Modular ADU in Boca Raton
A modular ADU in Boca Raton costs roughly $195,000 to $280,000 depending on module count and finish level. Modular construction works well on Boca Raton lots where crane access is open, but many of the older CBS-block ranches in neighborhoods like Camino Gardens have narrow side yards that restrict delivery paths. We survey access before you commit to modular, because a delivery route that doesn’t work can add $8,000 to $15,000 in crane time and site logistics.
Studio ADU in Boca Raton
A studio ADU in Boca Raton lands between $150,000 and $220,000 for a 400 to 550 sq ft detached unit. Studios are the most common detached ADU we build in Boca Raton’s HOA-saturated subdivisions, simply because a smaller footprint fits more easily behind a screened pool enclosure without triggering setback variances. On a compact Camino Gardens lot, we recently filed a permit for a 480 sq ft detached studio after securing written HOA approval, and the placement beside the pool enclosure cleared the required side-yard setback by 18 inches.
1-Bed & 2-Bed ADU in Boca Raton
1-bed and 2-bed ADUs in Boca Raton run between $195,000 and $295,000 all-in. These are the workhorses for homeowners planning long-term rental income or multigenerational housing. A 2-bed detached ADU pushes foundation and utility scope upward, especially on lots where the original 1970s electrical service was sized for a much simpler load. We typically upgrade the panel as part of the base price, not as a change order.
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 Raton
We specify and coordinate prefab and modular systems from Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, Tuff Shed, and James Hardie. For Boca Raton detached ADUs, James Hardie fiber cement siding is a common HOA-approved exterior, because it clears most architectural review committee material guidelines and handles South Florida humidity and storm-driven rain better than wood cladding. We maintain direct relationships with these manufacturers, which keeps lead times predictable and warranty claims straightforward. When we quote a prefab ADU for a Boca Raton client, the brand’s warranty documentation is included in your written contract.
Common New Detached ADU Problems We See in Boca Raton Homes
- HOA denial after city permit issuance. A homeowner pulls a City of Boca Raton building permit for a detached ADU, then their Architectural Review Committee denies the design on aesthetic covenant grounds. The homeowner now holds a valid city permit they cannot legally act on. We insist on written HOA approval before the city application is even filed.
- Underspecified slab elevation and moisture barrier. Boca Raton’s shallow water table demands careful slab elevation and moisture-barrier detailing on detached ADU foundations. A contractor unfamiliar with South Florida soil conditions leaves this out, and the slab cracks or wicks moisture within the first wet season.
- Wind-load failure on standard construction. A design proposes wood-frame construction with standard windows that fail the Florida Building Code’s 150 to 175 mph wind-design requirements for Boca Raton’s high-velocity hurricane zone. The project hits a stop-work order mid-framing and re-enters architectural review, adding 6 to 10 weeks and sometimes a five-figure redesign.
- Electrical panel overload on 1970s CBS homes. The original 200-amp or lower service in a late-1960s to early-1990s CBS home was never sized for a detached ADU’s HVAC, water heater, and appliance load. We include the panel upgrade in our written price before any work starts, so it doesn’t arrive as a surprise change order.
Pricing for New Detached ADU in Boca Raton, FL
Here’s what we see across Boca Raton’s market right now, all-in from drawings to final inspection:
- Studio ADU (400-550 sq ft): $150,000-$220,000
- 1-Bed ADU (500-750 sq ft): $195,000-$260,000
- 2-Bed ADU (750-1,000 sq ft): $230,000-$295,000
- Custom Built ADU (600-1,000+ sq ft): $210,000-$310,000
- Prefab/Modular ADU (delivered and set): $185,000-$280,000
Boca Raton’s high-velocity hurricane zone drives framing, roofing, and impact-rated opening costs up compared to Central Florida ADUs. The shallow water table requires a more substantial foundation detail. HOA-required exterior materials can add $8,000 to $25,000 depending on what your community’s design guidelines mandate. Every Ellery ADU Studio quote comes with a written price before any work begins, per Haven Standard Clause 1. The words “call for a quote” do not appear anywhere on our site. Call (971) 497-2402 and we’ll produce a written line-item price for your specific lot.
We Also Serve Cities Near Boca Raton
While this page focuses on Boca Raton, our crews serve Delray Beach, Pompano Beach, Boynton Beach, and Margate. If your property sits just outside the Boca Raton city line, the HOA sequencing advice on this page still applies. For full details on our service area, visit our New Detached ADU hub page.
Serving Boca Raton, FL - Our Local Coverage Area
We’re based in the Boca Raton 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 Boca Raton
Legally, the City of Boca Raton does not require HOA approval before issuing a permit, but your HOA’s covenants do. Under Florida’s 2020 ADU preemption law (HB 1339), the city cannot prohibit ADUs in single-family zones, but private deed restrictions operate outside that law. In communities like Boca West and Broken Sound, Architectural Review Committees routinely deny detached ADUs on aesthetic covenant grounds even after the city has issued a permit. You need written HOA approval first, then we file the city application. Call (971) 497-2402 if you want us to review your community’s covenants before you spend on plans.
Detached ADUs in Boca Raton typically cost $20,000 to $40,000 more than comparable builds in Delray Beach, driven by three factors: the density of HOA-governed communities that mandate specific exterior materials and colors, the city’s architectural review submittal requirements that extend design time, and the prevalence of older CBS-block homes on tight lots that force more expensive foundation and panel work. Delray Beach has far less HOA density, so the private covenant hurdles that slow and complicate Boca Raton projects simply don’t apply there at the same scale. Call (971) 497-2402 for a written price that accounts for these local conditions on your specific lot.
We don’t guess; we submit. Before we produce a single elevation drawing, we pull your community’s deed restrictions and architectural design guidelines, then we sit down with you and walk through what will and won’t pass review. If there’s ambiguity, we file a preliminary design inquiry with your Architectural Review Committee. That step costs a few hundred dollars and saves you the $15,000 to $30,000 mistake of paying for a full permit set that gets denied on aesthetic grounds. Call (971) 497-2402 and we’ll start the covenant analysis this week.
Usually yes, but it depends on the remaining buildable yard and the side-yard setbacks your specific community enforces. On a recent Camino Gardens project, the original 1972 CBS home had a deep single-car garage layout and a screened pool enclosure that consumed most of the rear yard. We filed a permit for a compact 480 sq ft detached studio placed beside the pool enclosure, clearing the required setback by 18 inches. If your lot genuinely can’t fit a detached ADU, a garage conversion is often the better path, which falls under our New Detached ADU team’s broader design-build scope. Call (971) 497-2402 and we’ll measure your actual buildable area, not your neighbor’s guess.
Plan on 4 to 10 weeks of added calendar time for Architectural Review Committee approval, depending on whether your community’s committee meets monthly or bi-monthly and how many rounds of revisions they request. That’s on top of the city’s permit review, which runs 4 to 8 weeks for a detached ADU in Boca Raton. We schedule construction around the review calendar so your project doesn’t sit half-finished waiting on a committee. We file the HOA submittal packet, we track the review, and we don’t start excavation until we have written approval in hand. Call (971) 497-2402 for an exact timeline on your project.
Written by Nadia Ellery, Owner at Ellery ADU Studio, serving Boca Raton’s single-family communities since 2015.