Fast, Reliable Home Additions & ADU Across Greenacres
Home additions and ADU construction in Greenacres typically run $45,000-$130,000 for room additions and $90,000-$220,000 for detached ADUs, with most projects requiring 4-8 months from permit to final inspection. We’re Groundwork Construction Co. of South Florida, and our crew works Home Additions & ADU in Greenacres regularly - from the CBS homes off Jog Road to the older developments near Lake Worth Road. Call (844) 665-0162 for a free estimate. We know the local permit process, the Palm Beach County amendments, and the hidden costs that out-of-county bidders miss.
Why Groundwork Construction Co. of South Florida Is Greenacres’s Preferred Home Additions & ADU Company
We’ve built our reputation in Greenacres by showing up with crews who understand what they’re walking into. The city isn’t coastal Boca or Delray - it’s flat, inland Palm Beach County with a housing stock built mostly between 1970 and 1994, and that difference matters for every permit we pull.
Raymond Estevez, who leads our company, has directed addition and ADU projects across Greenacres and the surrounding corridor for years. Our customers in the 33454 ZIP and nearby neighborhoods come back because we price the real job - including the dewatering, the hurricane strap retrofits, and the roof-to-wall connector upgrades that Palm Beach County enforces on pre-1994 homes. We don’t hand off to subcontractors you’ve never met. One contractor, every phase.
Our response time to Greenacres properties is typically same-day for initial consultations, and we keep a project manager assigned from demo through final walkthrough. That continuity matters when county inspectors flag something mid-build.
Our Home Additions & ADU Services in Greenacres
ADU Design & Permitting
Every ADU in Greenacres starts with a realistic permit strategy. Palm Beach County’s plan review is stricter than many Florida counties on roof covering and opening protection, and we’ve learned that pulling a permit for even a modest addition on a pre-1994 CBS home triggers a full roof-to-wall connector inspection. We design for that from the first drawing, not after the surprise hits. Our team handles the architectural plans, structural engineering, and permit submission so you’re not coordinating three separate offices.
Garage Conversion ADU
Garage conversions are one of the fastest paths to rental income or multigenerational living in Greenacres, but they come with local complications. The original flat membrane roofs on most 1970s-1990s homes here weren’t built to current wind-load standards, and the county will require upgrades before they’ll sign off on occupancy. On a Lake Ida Road property, our crew retrofitted a 1978 CBS home’s original flat membrane roof and added a Garage Conversion ADU in Greenacres. The old roof had no hurricane straps, and the water table sat just 3 feet down, so we had to use a sump pump during foundation work and upgrade the roof-to-wall connections to pass Palm Beach County’s strict inspection. We replaced the failing single-ply membrane with a new low-slope system and installed impact-rated windows, keeping the project within the $30,000-$80,000 garage conversion range despite the hidden costs.
New Detached ADU
Detached ADUs in Greenacres give you the most flexibility - rental income, home office, in-law suite - but they also face the toughest site challenges. The shallow water table here, often 2-4 feet below grade, means foundation work requires dewatering that coastal contractors don’t typically price for. And because Greenacres drains entirely through the Palm Beach County canal network, any grading that disrupts sheet flow can flood neighboring lots. We handle the ADU Site Prep & Utilities in Greenacres, including drainage design, as part of our standard scope, not as change orders later.
Junior ADU & Interior Conversion
For homeowners who don’t have garage space or yard area to build out, our Junior ADU & Interior Conversion service in Greenacres converts existing interior square footage into a self-contained unit. In Greenacres’s older CBS homes, this often means reworking the original floor plan, upgrading electrical service, and adding kitchen and bath rough-ins where none existed. We also assess whether the existing roof structure and wall connections meet current code - because Palm Beach County will check, and we’d rather tell you upfront than mid-permit.
ADU Site Prep & Utilities
Site prep in Greenacres is where local knowledge pays off most. The flat terrain and high water table mean excavation for utilities and foundations hits saturated soil fast. We’ve managed dewatering on properties from Forest Hill Boulevard to the neighborhoods near 10th Avenue North, and we know which soil conditions require engineered fill versus native compaction. Our utility work includes water, sewer, and electrical service upgrades sized for the additional load.
Room Additions & Second Story Additions
Room additions and second-story builds in Greenacres face the same code-compliance reality as ADUs: pre-1994 homes need connector upgrades, and the county enforces this without exceptions. We engineer for the existing structure’s limitations - many of these CBS homes were built with minimal rebar and no hurricane straps by today’s standards. Our structural partners assess load paths before we break ground, so the addition doesn’t outpace the foundation.
Sunrooms & Enclosed Patios
Enclosed patios and sunrooms are popular in Greenacres for good reason - they add living space without the full cost of a traditional addition. But the same wind-load and drainage rules apply. We use impact-rated glazing and tie into existing roof structures with proper load transfer, not the lightweight aluminum frames that fail in the storms Greenacres sees every summer.
What happens when you call
- 1
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 Work With in Greenacres
We’re not a single-vendor contractor. Our Home Additions & ADU team works with 50+ recognized brands across every category, and that matters when you’re matching materials to an existing Greenacres home. For kitchen and bath components in ADU builds, we specify Kohler and Moen fixtures - brands our customers recognize and that hold up to rental-grade use. For countertops, we offer Cambria, Silestone, and Caesarstone engineered quartz, each with its own warranty and performance profile. You choose the brand, we handle the build. That flexibility extends to roofing, windows, doors, and hardscaping - from GAF and CertainTeed shingles to Andersen and Pella windows, Belgard and Tremron pavers for the driveway and patio work that often accompanies an addition project.
Common Home Additions & ADU Problems We See in Greenacres Homes
- Underestimating dewatering costs on foundation work. The water table in Greenacres sits just 2-4 feet below grade, so any ADU slab or utility trench hits saturated soil fast. Contractors who don’t price sump pumping and engineered fill upfront hit homeowners with change orders mid-project.
- Missing the mandatory roof-to-wall connector upgrade. Palm Beach County requires these inspections on pre-1994 homes before signing off on addition permits. Out-of-county crews regularly miss this in bids, leaving Greenacres homeowners with surprise costs and permit delays.
- Disrupting sheet-flow drainage on flat lots. Greenacres drains through the county canal network, not natural grade. Poorly planned grading around a new ADU can pond water on neighboring properties, triggering code violations and neighbor disputes.
- Specifying non-impact-rated openings. Current Palm Beach County amendments require impact protection for new construction. We see plans submitted with standard windows that get rejected at plan review, wasting weeks.
Pricing for Home Additions & ADU in Greenacres, FL
Here’s what homeowners in Greenacres actually pay, based on our recent projects across the 33454 area and nearby Palm Beach County work:
| Service | Price Range in Greenacres |
|---|---|
| Home Addition | $45,000-$130,000 |
| ADU Construction | $90,000-$220,000 |
| Garage Conversion ADU | $30,000-$80,000 |
These ranges include the code-compliance upgrades that Palm Beach County requires on older homes - the roof-to-wall connectors, hurricane strap retrofits, and impact-rated openings that many initial bids leave out. Dewatering adds cost on sites where the water table is highest, typically properties near the canal network’s lower elevations. We don’t quote “allowances” that evaporate later. Our estimates itemize the real work, and consultations are free. Call (844) 665-0162 to schedule a site visit.
We Also Serve Cities Near Greenacres
Our crews work throughout central Palm Beach County, including Greenacres City proper, Lake Worth, Lake Worth Corridor, and Palm Springs. The same building code amendments, water table conditions, and inspection standards apply across this corridor, so our local expertise travels with us.
Serving Greenacres, FL - Our Local Coverage Area
We’re based in the Greenacres 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 Greenacres
Palm Beach County enforces Florida Building Code amendments strictly on older homes, and any permit for structural work on a pre-1994 home requires verification that roof-to-wall connections meet current wind-load standards. This isn’t optional - it’s a mandatory hold point that stops the project until an inspector signs off. We build this upgrade into our initial scope and pricing so you’re not surprised mid-build. Call (844) 665-0162 and we’ll walk through what your specific home needs.
The water table here, typically 2-4 feet below grade, forces us to dewater excavation sites and use engineered fill or raised slab designs that contractors in higher coastal areas don’t need. This adds $3,000-$8,000 to typical foundation work, depending on season and exact site elevation. We identify this during our initial site evaluation and price it upfront, not as a change order. Call for a free estimate that includes real dewatering costs.
No - if your home was built before 1994, Palm Beach County will require roof-to-wall connector upgrades and likely a full roof covering assessment before issuing a certificate of occupancy for the ADU. The original flat or low-slope membrane roofs common in Greenacres’s 1970s-1990s housing stock typically don’t meet current standards. We replaced the entire membrane on our Lake Ida Road garage conversion project for this exact reason. Call (844) 665-0162 and we’ll inspect your roof structure during our first visit.
Greenacres’s flat terrain drains entirely through the Palm Beach County canal network, not natural slope. Any grading that blocks or redirects sheet flow can create standing water on your property or your neighbor’s, which violates code and creates liability. We engineer drainage plans that maintain existing flow patterns, often using French drains, catch basins, or permeable hardscape to manage runoff. This is standard in our site prep scope, not an afterthought. Call to discuss your specific lot conditions.
Detached ADUs require the same building permit as any new residential structure, plus compliance with Palm Beach County’s specific amendments on wind-load, opening protection, and drainage. The county also enforces setback and lot coverage rules that vary by zoning district within Greenacres. We handle the zoning verification, site plan, and permit submission as part of our standard service. Call (844) 665-0162 for a free consultation - we’ll confirm what’s required for your property before any design work begins.
Ready to expand your Greenacres home? Call Groundwork Construction Co. of South Florida at (844) 665-0162 for a free, no-obligation estimate. We’ll assess your property, explain the local code requirements that apply to your specific home, and give you a detailed scope with real numbers - not a lowball that balloons later.
Written by Raymond Estevez, Owner at Groundwork Construction Co. of South Florida, serving Greenacres and Palm Beach County homeowners.