Fast, Reliable Home Additions & ADU Across Boca Raton
Home additions and ADU construction in Boca Raton typically run $45,000-$130,000 for room additions and $90,000-$220,000 for detached units, with most projects requiring 12-18 weeks for permitting alone due to the city’s layered approval process. We’re Groundwork Construction Co. of South Florida, and we build across Boca Raton’s unique landscape - from the 1960s ranch homes near Palmetto Park Road to the gated Mizner-style estates west of Lyons Road. Call (844) 665-0162 for a free estimate.
Our crew knows the difference between a quick permit in Deerfield Beach and the stacked approvals you’ll face in Boca West or Broken Sound. We’ve staged materials at 7 AM to beat delivery windows, matched barrel tile to satisfy the Architectural Review Board, and called in geotechnical engineers when muck showed up 14 inches down. That local fluency saves you months.
Why Groundwork Construction Co. of South Florida Is Boca Raton’s Preferred Home Additions & ADU Company
We’ve built our reputation in Palm Beach County by treating Boca Raton’s regulatory complexity as standard operating procedure, not an obstacle. Homeowners in 33432 and 33433 call us back because we front-load the ARC and ARB paperwork instead of discovering it mid-project.
Raymond Estevez leads our team with a simple approach: one contractor, every phase. You don’t juggle a separate architect, engineer, and builder. We handle ADU design and permitting, site prep, utility tie-ins, and final finish - and we do it with the brands you choose, not the ones we stock.
Our response time to Boca Raton is same-day for consultations, typically within 45 minutes to the eastern ZIPs and under an hour to communities west of Lyons Road. We know which gates require 24-hour advance notice, which property managers inspect every delivery truck, and where the county’s muck line starts.
That familiarity shows up in budgets that don’t balloon. We’ve seen too many projects stall because a contractor poured a standard slab without checking for saturated soils, or spec’d non-impact windows that failed wind-load inspection. We don’t let those mistakes happen on our watch.
Our Home Additions & ADU Services in Boca Raton
ADU Design & Permitting
Every ADU in Boca Raton starts with a permit strategy, not a floor plan. The city’s Architectural Review Board enforces Addison Mizner-inspired Mediterranean Revival standards - barrel tile, stucco, arched openings, approved color palettes - that carry municipal code force. Then your community ARC adds its own layer. We map both paths before we draw a wall. Our Home Additions & ADU team has cleared ARB review for units in Boca West, Broken Sound, and Woodfield Country Club, and we know which plans get fast-tracked and which need revision.
Garage Conversion ADU
Converting a garage in 33431 or 33432 can add 400-600 square feet of permitted living space without touching your setback lines. The catch: older concrete block ranches from the 1960s and 70s often have slab elevations too low for current flood code, and the electrical panel may need upgrading to handle a kitchenette and HVAC. We assess those constraints in our first site visit so your conversion budget doesn’t sprawl.
New Detached ADU
A detached unit gives you rental income, in-law quarters, or home office space separate from the main house. In Boca Raton’s western ZIPs - 33496, 33498 - we regularly deploy prefab partners like Abodu, Dvele, Mighty Buildings, and Boxabl to cut build time, or we stick-build to match existing Mizner detailing exactly. The soil drives the decision as much as the design. Those drained Everglades wetlands sit on compressible organic soils with a high water table. Standard monolithic slabs void out when muck hits at 18 inches. We order a current geotechnical report and design stem-wall foundations with engineered fill when the ground demands it.
Junior ADU & Interior Conversion
For homeowners who don’t want exterior construction, a junior ADU converts existing square footage - typically a master suite wing or ground-floor bonus room - into a self-contained unit with its own entrance, kitchenette, and bathroom. In Boca Raton’s older ranch stock near Camino Real, these conversions work well because the original floor plans are sprawling and single-story. We handle the interior reconfiguration, utility separation, and code compliance for egress and ventilation.
Second Story Additions
Adding up instead of out preserves your yard and your setback compliance. But in Boca Raton, a second story triggers full wind-load engineering and impact-rated openings under the 160+ mph design standard. We recently finished a second-story addition on a 1980s Mizner-style home in Broken Sound, matching the existing barrel tile roof and stucco finish to pass the community ARC. Because the house sits on compressible organic soil, we used a stem-wall foundation with engineered fill, and coordinated with the property manager to stage materials only during the approved 8-10 AM delivery window to avoid the single-lane access point. That’s the kind of operational detail that separates a finished project from a stalled one.
ADU Site Prep & Utilities
Western Boca Raton’s high water table and organic soils make site prep a specialized discipline. We handle soil testing, engineered fill, drainage design, and utility extension - water, sewer, electric, gas - so your ADU connects to city services without surprises. Our crews keep a geotechnical contact on speed dial before any ground-up build west of Lyons Road. It’s not optional. It’s how you avoid a voided slab and a six-week delay.
Room Additions & Sunrooms
Single-room additions - master suites, family rooms, enclosed patios - still face the full ARB and permitting stack. We design for Mizner compatibility from the first sketch, specifying stucco systems, barrel tile from Boral or similar approved manufacturers, and impact-rated windows from Andersen, Pella, or Marvin that satisfy both the aesthetic and structural requirements.
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
Groundwork works with 50+ recognized brands across every trade, and we don’t lock you into proprietary products. For ADU kitchens, that means cabinetry from KraftMaid or Wellborn, countertops from Cambria, Silestone, or Caesarstone, and fixtures from Kohler and Moen. For roofing on additions, we specify GAF, CertainTeed, Owens Corning, or Boral barrel tile to match existing Mizner roofs. For windows and doors, we draw from Andersen, Pella, Marvin, Milgard, Jeld-Wen, Simonton, PGT, and CGI - including impact-rated lines that pass Palm Beach County’s 160+ mph wind-load inspection. You choose the brand, we handle the build. That flexibility matters in Boca Raton, where material matching isn’t a preference - it’s a permit requirement.
Common Home Additions & ADU Problems We See in Boca Raton Homes
- Permit timeline collapse. Homeowners start demolition before ARC and ARB approvals clear, then hit a stop-work order when the community or city flags the project. We front-load every approval before a shovel touches dirt.
- Foundation failure on western soils. A standard slab design pours fine until muck or saturated organic soil voids it at 18 inches. We verify geotechnical conditions before specifying foundation type, especially west of Lyons Road.
- Non-impact openings rejected at inspection. Specifying standard windows or doors that fail the 160+ mph wind-load requirement delays final sign-off and forces costly replacement. We engineer every opening for compliance from day one.
- Mizner mismatch at ARB review. Additions with wrong roof pitch, non-stucco cladding, or unapproved colors get sent back for redesign. We study your existing home’s detailing and the ARB’s approved palette before submitting.
Pricing for Home Additions & ADU in Boca Raton, FL
Here’s what homeowners in Boca Raton actually pay:
| Project Type | Price Range |
|---|---|
| Home Addition | $45,000-$130,000 |
| ADU Construction | $90,000-$220,000 |
| Garage Conversion | $30,000-$80,000 |
These ranges reflect Boca Raton’s specific cost drivers: stem-wall foundations on soft western soils, impact-rated windows and doors, ARB-mandated materials like barrel tile and stucco, and the extended permitting timeline that keeps crews on standby. A garage conversion in 33431 typically lands lower because it’s slab-on-grade with no new roofline. A detached ADU in 33498 runs higher because of soil engineering, utility extension, and gated-community logistics. Call (844) 665-0162 for an exact quote - estimates are free, and we’ll walk your property to identify the variables that affect your specific build.
We Also Serve Cities Near Boca Raton
We build across Palm Beach and northern Broward counties, including Boca Raton neighbors like Boca Del Mar, Deerfield Beach, Sandalfoot Cove, and Kings Point. Each city has its own permitting rhythm - Deerfield Beach moves faster on plan review, Delray Beach has no municipal ARB equivalent - and we adjust our approach accordingly.
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. In gated communities like Boca West, Broken Sound, and Woodfield Country Club, you need sequential sign-offs from your community ARC, the city ARB, and Palm Beach County permitting before any work begins. We handle all three layers as part of our ADU design and permitting service, and we build the timeline around their combined review cycles. Call (844) 665-0162 to discuss your community’s specific requirements.
Yes, but the foundation design must account for it. The western ZIPs - 33496, 33498 - sit on drained Everglades wetlands with compressible organic soils and a high water table, so standard monolithic slabs often fail. We use stem-wall foundations with engineered fill, based on a current geotechnical report, to ensure long-term stability. Call (844) 665-0162 and we’ll assess your site’s soil conditions.
The ARB requires barrel tile roofs, stucco exteriors, and approved color palettes that match Addison Mizner’s Mediterranean Revival aesthetic. We specify Boral barrel tile or equivalent approved products, and we coordinate color samples with the ARB before ordering. Getting this wrong means a rejected permit and months of delay. Call (844) 665-0162 to review your home’s existing roof and our matching approach.
Palm Beach County’s 160+ mph design wind speed requires impact-resistant openings on all new construction and substantial improvements, adding roughly 30-50% to window and door costs compared to standard products. We specify from Andersen, Pella, Marvin, PGT, or CGI impact-rated lines, and we engineer every opening for compliance so you don’t fail inspection. Call (844) 665-0162 for a line-item breakdown on your addition.
Yes. Most gated communities restrict delivery windows - often 8-10 AM on weekdays - and require 24-48 hour advance notice for truck access. Some inspect every delivery, and single-lane access points mean staging space is limited. We coordinate directly with property managers, schedule deliveries to approved windows, and stage materials off-site when necessary to keep your project moving. Call (844) 665-0162 and we’ll map the logistics for your community.
Written by Raymond Estevez, Owner at Groundwork Construction Co. of South Florida, serving Boca Raton and surrounding communities.