Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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Before
AfterFast, Reliable Home Additions & ADU Across Boca Raton
A typical home addition in Boca Raton runs $45,000-$130,000, while ADU construction ranges from $90,000-$220,000 depending on whether you’re converting existing space or building new. Most projects take 4-8 months from signed contract to final inspection, though Boca Raton’s unique dual-approval process can extend that timeline. Call (754) 714-6540 and we’ll walk you through what your specific property requires.
Our crews serve Boca Raton from our Miami South Florida office, and we’ve learned that building here is not like building in Deerfield Beach or Coconut Creek. The city-wide Community Appearance Code, rooted in Addison Mizner’s Mediterranean Revival legacy from the 1920s, means virtually every significant project must satisfy a design-review layer before permitting even begins. That review enforces barrel-tile roofs, stucco finishes, and arched detailing that no neighboring Palm Beach County city mandates as broadly. Then there’s the second layer: the dense concentration of private country-club communities - Boca West, Broken Sound, Woodfield Country Club - each with its own Architectural Control Committee running independent approval calendars with its own spec sheets and material libraries. Contractors who treat Boca like a standard South Florida pull-permit-and-build market routinely face costly restart orders. We don’t.
Why Rowan Construction Group Pompano Beach Is Boca Raton’s Preferred Home Additions & ADU Company
We’ve delivered over 4,000 projects since 2007, every one with a written price before any work started and a documented photo record when the crew left. In Boca Raton specifically, that discipline matters more than most places. The 365-Day Done Right Promise, backed by The Haven Standard, is printed on every page - not an asterisk. If it’s not done right, we make it right.
Our Home Additions & ADU team has worked through enough Boca Raton design reviews and ACC approvals to know that “permitted by the city” and “approved to start” are two different things. We build the parallel approval timeline into every contract as a hard contingency line, so you’re not paying for idle crew weeks while waiting on a committee meeting.
Background-checked, uniformed technicians arrive with a documented photo record included as standard - not an upgrade. A live person answers calls 24/7. And under Clause 1 of The Haven Standard, the price is written before anyone picks up a tool.
Grant Rowan has maintained the same administrative discipline since founding the company: no change proceeds without a signed change order. That’s 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
ADU construction in Boca Raton starts at $90,000 and can reach $220,000 for a fully detached unit with independent utilities. The permitting path here is longer than most South Florida cities because of the Community Appearance Code design review - your plans will be evaluated for Mediterranean Revival compatibility before the building department accepts them. We handle both layers simultaneously, running structural drawings and HVHZ impact specifications in parallel with the aesthetic review so no calendar sits idle. For properties in Boca West, Broken Sound, or Woodfield, we also prepare the separate ACC submission package with material samples and color boards matched to the community’s spec library.
Garage Conversion ADU
A garage conversion ADU in Boca Raton typically runs $30,000-$80,000, making it the most cost-effective way to add permitted living space. But older Boca garages - especially the 1960s-1970s ranch stock in Camino Gardens and Royal Oak Hills - were built as storage structures, not living space. The slab is often thinner than code requires for habitable rooms, the walls lack proper tie-downs for HVHZ wind loads, and the electrical service was never sized for kitchen and bath circuits. We scan for post-tensioned cables before cutting, test the existing slab for structural adequacy, and write the likely upgrades into your contract as an allowance so the number isn’t a surprise.
New Detached ADU
New detached ADUs in Boca Raton face the full force of the city’s design requirements - stucco finish, barrel-tile roof, arched openings - plus the structural realities of building on South Florida’s porous limestone base. The very high water table and oolite substrate mean most foundations require pilings or engineered post-tensioned slabs, not simple footings. Salt-laden air accelerates corrosion on fasteners and rebar cover, so we spec stainless or hot-dip galvanized hardware as baseline, not an upgrade. Every new detached ADU we quote includes impact-rated windows and doors meeting Palm Beach County’s post-Andrew HVHZ standards - shutters alone don’t satisfy code for new construction.
Junior ADU & Interior Conversion
Junior ADUs and interior conversions in Boca Raton’s 1980s-1990s luxury country-club tract estates or 2000s custom homes often involve reconfiguring high-end finishes rather than structural rebuilds. The challenge here is matching existing materials - the Cambria or Caesarstone countertops, the KraftMaid or Wellborn cabinetry - so the new space doesn’t read as an afterthought. We source from fifty-plus vetted brands to get honest numbers for matching, not inflated allowances that pad the quote.
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.
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AfterTrusted Brands We Service in Boca Raton
We source across fifty-plus vetted brands for our Boca Raton projects. For fencing and exterior enclosures on ADU properties, we regularly specify ViewLux aluminum railing systems, Barrette outdoor living products, and Master Halco ornamental and chain-link solutions - all stocked through our South Florida supply chain for turnaround times that keep ACC-mandated material approvals moving. Ameristar ornamental steel sees use in perimeter applications where the community spec requires a particular profile. The point is honest numbers in the written quote: we name the brand, the grade, and the finish so you’re comparing real specifications, not vague allowances.
Common Home Additions & ADU Problems We See in Boca Raton Homes
- Double approval delays. Contractors who secure city permits but skip the country-club ACC process find their project halted when exterior stucco color, barrel-tile profile, or driveway material gets rejected. We map both approval paths before breaking ground.
- Corroded lintels and undersized framing in 1960s-1970s CBS ranches. Salt air attacks steel lintels over old sliders and windows; original framing often lacks the tie-downs required for post-Andrew HVHZ compliance. We inspect and price these upgrades before framing starts.
- Post-tensioned slab surprises. Cutting into a slab without cable-location scanning can sever tendons or crack thin oolite cover, turning a simple foundation modification into a structural repair. We scan first, every time.
- Impact-rating gaps on additions. Some contractors spec shutters for new addition windows, but HVHZ standards for new construction in Palm Beach County require fully impact-rated assemblies. We engineer for the stricter standard from the first submission.
Pricing for Home Additions & ADU in Boca Raton, FL
Here are the numbers we put in writing before any work starts on Home Additions & ADU in Boca Raton:
| Project Type | Price Range in Boca Raton |
|---|---|
| Home Addition | $45,000-$130,000 |
| ADU Construction | $90,000-$220,000 |
| Garage Conversion | $30,000-$80,000 |
| Impact Window Installation (if required) | $8,000-$25,000 |
| Roof Replacement (if tied to addition) | $8,000-$20,000 |
What moves the number: the square footage, the structural condition of the existing home, the approval path complexity, and the finish level. A 1960s CBS ranch in Royal Oak Hills with corroded lintels and undersized electrical will land higher than a 2005 custom home with modern infrastructure. We inspect first, write allowances for likely discoveries, and price any surprise in writing before we touch it - Clause 1 of The Haven Standard. Free estimates. Free Second Opinion on any competitor’s written quote, reviewed line by line.
We Also Serve Cities Near Boca Raton
Our crews work throughout northern Broward and southern Palm Beach counties, including Deerfield Beach, Coconut Creek, Pompano Beach, and Margate. Each city has its own permitting rhythm and community rules; we adjust the contract and timeline accordingly rather than applying a Boca Raton template elsewhere.
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 - Home Additions & ADU in Boca Raton
Yes, but you need two separate approvals: city permits plus your community’s Architectural Control Committee clearance. The ACC runs its own calendar with its own material spec sheets, and a project fully permitted by the city can still sit idle for weeks waiting on an ACC meeting. We build that parallel timeline into every country-club contract as a hard contingency line. Call (754) 714-6540 to discuss your specific community’s requirements.
Typically: post-tensioned slab construction requiring cable-location scanning, corroded steel lintels from salt-air exposure, undersized electrical service, and framing that lacks modern HVHZ tie-downs. We opened up a 1968 CBS ranch in Camino Gardens for a rear room addition and found exactly this profile - corroded lintels, undersized wiring, and a post-tensioned slab. Before framing anything, we brought in the engineer, priced the tie-down and wind-load upgrades as an allowance, and wrote the cable-location and structural fixes into the contract. The owner approved the change order in writing, and we passed rough-in inspection without a restart. Call (754) 714-6540 to schedule an inspection of your specific property.
New construction and substantial additions in Palm Beach County’s high-velocity hurricane zone must use fully impact-rated windows and doors - shutters alone do not satisfy code for new work. Existing homes may retain shutters for original openings, but any new opening we create gets impact-rated assemblies engineered to post-Andrew HVHZ standards. We spec this into the quote from day one, not as a mid-project upgrade. Call (754) 714-6540 for the exact specification on your project type.
We inspect before we quote, write allowances for likely conditions, and require a signed change order before any additional work proceeds. The 365-Day Done Right Promise and The Haven Standard’s Clause 1 - written price before any work starts - are the framework. We don’t start on a surprise until you’ve approved the price in writing. Call (754) 714-6540 and we’ll show you how the allowance structure works on your project.
A room addition runs $45,000-$130,000; ADU construction runs $90,000-$220,000; garage conversions run $30,000-$80,000. The specific number depends on square footage, existing structural condition, approval complexity, and finish level. We deliver a flat written price with a written scope and written warranty - never “call for a quote.” Call (754) 714-6540 to schedule your free estimate.
Ready to add space to your Boca Raton home? Call (754) 714-6540 to schedule your free estimate. We’ll inspect your property, map the approval path, and put the number in writing before anyone picks up a tool - that’s Clause 1 of The Haven Standard, and it’s how we’ve kept 4,000-plus projects within a few percent of the agreed price since 2007.
Written by Grant Rowan, Owner at Rowan Construction Group, serving Boca Raton since 2007.