Home Additions & ADU in Boca Raton - Design, Permits and Build Under One Contract

Fast, Reliable Home Additions & ADU Across Boca Raton

A home addition in Boca Raton typically runs $45,000-$130,000, and an ADU construction runs $90,000-$220,000, with most projects requiring 4-8 months from signed contract to final inspection. Crews are dispatched from our Miami office and serve Boca Raton directly, with scheduling coordinated for neighborhoods from Boca Pointe to the barrier island. Call (754) 254-8065 to schedule your free estimate.

Call (754) 254-8065

We’ve worked the Arvida-era CBS homes that dominate Boca Raton’s interior, the Mediterranean Revival estates along A1A, and the master-planned communities where an addition faces review by two separate authorities before a permit is ever issued. That local knowledge matters when your project timeline depends on knowing which gate to enter first.

Why Rowan Construction Group Boca Raton Is Boca Raton’s Preferred Home Additions & ADU Company

Our Home Additions & ADU team has delivered 4,000-plus projects since 2007, every one with a written flat price before work started and a documented photo record when the crew left. In Boca Raton, that discipline means something specific: we know the dual-track approval system that governs construction here, and we build it into every calendar we write.

Homeowners in Boca Raton research contractors the way they research appliances. They read the three-star reviews. They want the price range on the page before they make contact. They prefer a text confirmation to a phone promise. We write our quotes for that customer: line-item, flat-price, with every long-lead item named and ordered before framing begins.

Response time to Boca Raton is same-week for estimates, with our Miami office coordinating dispatch across Palm Beach County. Crews arrive background-checked, uniformed, and with the photo documentation system already running.

The 365-Day Done Right Promise backs every project. Under Clause 1 of the Haven Standard, the price is written before anyone starts. No change proceeds without a signed change order. That is the administrative discipline Haven acquired Rowan for, and it is why our projects finish within a few percent of the number the customer agreed to.

Our Home Additions & ADU Services in Boca Raton

ADU Design & Permitting in Boca Raton

ADU construction in Boca Raton starts at $90,000 and runs to $220,000, but the real variable is time. In communities like Boca West, Broken Sound, and Woodfield, the Architecture Review Board must approve material, color, and elevation before the city’s building department ever sees the plans. We front-load the design phase with ARB precedent research, so the submission is not a guess. Our permit package includes engineered roof-to-wall connectors and impact-rated glazing specifications that satisfy Florida Building Code’s high-velocity hurricane zone requirements, because the city inspector will check both.

Garage Conversion ADU in Boca Raton

Garage conversion ADUs run $30,000-$80,000 in Boca Raton, and they trigger a specific local complication: the converted square footage counts toward FEMA’s substantial improvement calculation. On older Arvida-era CBS homes, the conversion cost plus any concurrent remodel can push past 50% of market value, forcing full code compliance including impact windows and structural upgrades. We calculate that threshold in the initial written quote, not after permits are pulled. The slab-on-grade foundation typical of Boca Raton’s oolitic limestone substrate usually supports the conversion without underpinning, but we verify soil bearing capacity before quoting.

New Detached ADU in Boca Raton

A new detached ADU in Boca Raton faces the full ARB and city review cycle, plus utility trenching across a lot that may sit 2-4 feet above the water table. We handle site prep and utility coordination as a scoped line item, with dewatering plans where the geotechnical report requires them. The finished structure must match community aesthetic standards, so we specify cladding, roof profile, and trim details in the written quote before ordering. Belgard pavers or Techo-Bloc hardscaping connect the ADU to the main residence without violating HOA sight-line rules.

Junior ADU & Interior Conversion in Boca Raton

Junior ADUs and interior conversions work within the existing envelope, which can bypass some ARB review but still requires city permitting for egress, electrical panel upgrades, and HVAC zoning. In Boca Raton’s 1970s-1990s CBS stock, the existing electrical service is often 150-amp and must be upgraded to 200-amp to handle the additional load. We identify that in the first site visit and include it in the flat-price quote, not as an allowance that becomes a change order later.

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Trusted Brands We Service in Boca Raton

We source across fifty-plus vetted brands, and on Boca Raton’s high-end tier we lean on the names that deliver documented lead times: KraftMaid and Wellborn for custom millwork, Cambria and Caesarstone for countertops, Kohler and Toto for fixtures. We stock Belgard pavers locally for hardscaping that matches Mediterranean Revival community standards. The written quote names the brand and the sku, not a generic allowance, because the calendar is set by procurement, not by how fast our crew can frame. When a Boca Pointe ARB requires a specific profile or finish, we order the sample before the submission, not after.

Common Home Additions & ADU Problems We See in Boca Raton Homes

• ARB approval stalls the job before the city sees it. A Boca West or Woodfield addition cannot be permitted and cannot be ordered until the community’s design board signs off on material, color, and elevation. That adds weeks or months versus a Delray Beach job with no ARB layer. We build that timeline into the written contract.
• FEMA substantial improvement review blindsides older homeowners. Once the remodel plus addition cost crosses 50% of market value on an Arvida-era CBS home, the owner is forced into code-compliant impact glazing, roof-to-wall connectors, and structural work nobody budgeted for. We calculate that threshold in the initial quote.
• High-end lead times blow past the draw schedule. Custom millwork, architectural glass, and designer fixtures get treated as construction-phase decisions instead of pre-construction procurement. The finish schedule slips, and the crew blames labor for a calendar actually set by cabinet and glass orders. We fix the lead-time calendar in writing before ordering.
• Oolitic limestone and high water table complicate any below-grade work. The substrate across much of Boca Raton makes slab-on-grade universal and renders crawl spaces, basements, or deep footings an engineering challenge requiring significant dewatering. We design for the ground we find, not the ground we wish for.

Pricing for Home Additions & ADU in Boca Raton, FL

We Also Serve Cities Near Boca Raton

Our crews work across South Palm Beach County and northern Broward, including Home Additions & ADU in Boca Raton proper plus Deerfield Beach, Delray Beach, Coconut Creek, and Pompano Beach. Delray Beach and Pompano Beach lack the dual-track ARB system that defines Boca Raton’s timeline, so projects there move on a different calendar. We quote each city accurately.

FAQs - Home Additions & ADU in Boca Raton