Fast, Reliable Home Additions & ADU Across Plantation
Home additions and ADU construction in Plantation 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 completion. We’re Groundwork Construction Co. of Miami, and we build across Plantation’s 1960s-1970s neighborhoods from Plantation to the western edges near the Everglades boundary. Our crew knows the Broward County permitting process inside out, and we understand how this city’s aging CBS housing stock interacts with Florida’s post-Hurricane Andrew building code. Call (844) 665-0162 for a free estimate - we’ll walk your property and flag the code triggers before you commit to a design.
Why Groundwork Construction Co. of Miami Is Plantation’s Preferred Home Additions & ADU Company
We’ve spent years working in Plantation’s original subdivisions along Broward Boulevard and east of University Drive, where the same flat-roof, single-story CBS homes were built in waves during the 1960s and 1970s. That repetition means we know the failure patterns before we open a wall: original aluminum windows that won’t pass impact-rating, low-slope roofs with drainage that wasn’t designed for current rain loads, and electrical panels that haven’t met code since the Reagan administration.
Our Home Additions & ADU team handles everything from junior ADU conversions to full second-story additions without handing you off to subcontractors you’ve never met. One contractor, every phase. You choose the brand, we handle the build.
We respond to Plantation inquiries within one business day, and our Fort Lauderdale base puts us on your driveway fast. We recently converted a screen-enclosed patio off NW 70th Avenue into a junior ADU for a couple whose 1973 CBS home still had its original service panel. Our crew upgraded the electrical panel and supply plumbing to meet Broward County code before closing the permit, and the concrete slab pour required coordinating with surface water management because the water table was just under two feet in August. The result was a fully permitted, insured-tenant-ready space that added functional square footage without expanding the footprint.
Our Home Additions & ADU Services in Plantation
ADU Design & Permitting
Plantation’s ADU permitting runs through Broward County’s unified system, but the city maintains its own zoning overlay that affects setback and height rules - especially in the older neighborhoods near Plantation Acres where lot sizes vary. We handle the full design-permit-build sequence, including the site plans that Broward County requires for any structure within the high-water-table zone. Our in-house drafting accounts for the mandatory whole-house upgrades that Plantation’s building inspectors enforce on any permitted addition. ADU construction in Plantation typically costs $90,000-$220,000 depending on size, utility connections, and whether you choose stick-built or prefab construction.
Garage Conversion ADU
Garage conversions are popular in Plantation’s 33388 zip and surrounding neighborhoods where homeowners want rental income without losing yard space. The catch: most 1960s-1970s garages share electrical service with the main house and lack independent plumbing rough-ins. We separate the systems, upgrade the panel if needed, and convert the slab to meet current flood-elevation requirements. A garage conversion ADU in Plantation runs $30,000-$80,000. Do you need a permit for a garage conversion ADU in Plantation? Yes - absolutely. Any conversion to habitable space requires full permitting, and inspectors will verify impact-rated windows, hardwired smoke detection, and separate utility metering if you’re renting it out.
New Detached ADU
Detached ADUs give you maximum flexibility for rental income, multigenerational living, or home office space. In Plantation, we offer two build paths: traditional stick-framed construction on a raised slab or pier foundation, or prefab units from partners like Mighty Buildings, Boxabl, and Plant Prefab that cut site time dramatically. The prefab route works well here because the units arrive weather-tight, minimizing exposure during our wet season. Either way, we manage the dewatering and drainage design that Broward County requires when the seasonal water table rises within two feet of grade. Built to spec, not to convenience.
Junior ADU & Interior Conversion
Junior ADUs convert existing interior space - think attached garages, large utility rooms, or enclosed patios - into independent living quarters without expanding the home’s footprint. In Plantation’s older CBS homes, these conversions often make more sense than detached builds because you’re working within the existing envelope. The tradeoff: you’ll still trigger electrical and plumbing upgrades if the original systems are pre-1990s. We evaluate whether your existing slab, walls, and roof structure can support the conversion before we draw a single plan.
Room Additions
Single-story room additions - master suites, expanded kitchens, family rooms - are the most common expansion we build in Plantation. The 1960s-1970s CBS stock often has non-load-bearing interior walls and low-slope roofs, making second-story additions unusually feasible and cost-effective compared to newer two-story suburbs like Weston, but any addition triggers mandatory whole-house upgrades to electrical panels and supply plumbing per current Florida Building Code. We price these upgrades upfront so you’re not surprised mid-project.
Second Story Additions
Adding a second story to a Plantation CBS home requires structural analysis of the original footings and block walls, which weren’t designed for the additional load. We bring in a structural engineer early, coordinate the tie-down requirements that Florida Building Code mandates for wind uplift, and sequence the roof removal to minimize weather exposure. Second-story additions in Plantation typically match the room addition range of $45,000-$130,000, though complex structural reinforcement can push toward the upper end.
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 Plantation
Groundwork works with 50+ recognized industry brands across every residential construction category, and our ADU and home addition projects draw from that full portfolio. For prefab ADU structures, we partner with Mighty Buildings, Boxabl, Plant Prefab, and Tuff Shed to offer clients factory-built options that compress the construction timeline. For traditional builds, we specify impact-rated windows from Andersen, Pella, or PGT; roofing from GAF, CertainTeed, or Owens Corning; and cabinetry from KraftMaid or Wellborn. You choose the brand, we handle the build. We don’t lock you into proprietary products or single-vendor relationships. From driveway to roofline, every material decision is yours.
Common Home Additions & ADU Problems We See in Plantation Homes
- Hidden roof drainage failures. Adding to a 1960s CBS home without testing for original low-slope roof drainage can cause ponding and leaks because the existing structure wasn’t designed for modern rain loads. We evaluate the existing roof slope and drainage paths before tying in any new construction.
- Wet-season excavation flooding. Starting an ADU or addition without verifying the shallow aquifer depth in the wet season can lead to excavation flooding and permit delays, as Broward County regulates dewatering. We schedule foundation work outside the June-October peak when possible, and we engineer drainage solutions when we can’t.
- Impact-rated window mandates. Assuming a permit for an addition won’t trigger upgrades to original aluminum windows and sliding glass doors, which must be replaced with impact-rated units - a hidden cost homeowners often miss. We flag this in our initial assessment so it’s in your budget from day one.
- Electrical panel obsolescence. Most 1970s service panels in Plantation are 100-amp with no spare breaker space, and inspectors won’t sign off on an addition until you upgrade to 200-amp service with proper grounding. We include this in our scope unless your panel has already been modernized.
Pricing for Home Additions & ADU in Plantation, FL
Here’s what homeowners in Plantation actually pay for addition and ADU work:
| Project Type | Typical Range in Plantation |
|---|---|
| Home Addition | $45,000-$130,000 |
| ADU Construction | $90,000-$220,000 |
| Garage Conversion | $30,000-$80,000 |
| Second Story Addition | $45,000-$130,000 |
What moves you within these ranges? Size and complexity are obvious factors, but in Plantation the hidden drivers are code-mandated whole-house upgrades: electrical panel replacement, impact window conversion, and plumbing supply-line updates. Site conditions matter too - if your property sits where the water table runs high in wet season, foundation work costs more. We itemize every upgrade in our estimate so you know what’s optional and what’s required by code. Call (844) 665-0162 for an exact quote - estimates are free, and we’ll flag the code triggers specific to your home’s year and neighborhood.
We Also Serve Cities Near Plantation
Our crews work throughout central Broward County, including Home Additions & ADU in Plantation and surrounding communities. We regularly build in Fort Lauderdale, Broadview Park, Lauderhill, and Lauderdale Lakes - all within our standard service radius. The same code expertise, brand access, and single-source accountability apply whether you’re five minutes or fifteen minutes from our Fort Lauderdale base.
Serving Plantation, FL - Our Local Coverage Area
We’re based in the Plantation 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 Plantation
Yes, and it’s often more feasible than homeowners expect. Plantation’s 1960s-1970s CBS homes frequently have non-load-bearing interior walls and low-slope roofs that simplify structural modification compared to newer two-story construction. You’ll need a structural engineer to verify footing capacity and design tie-downs for wind uplift, plus mandatory electrical and plumbing upgrades. Call (844) 665-0162 and we’ll assess your specific home’s potential.
Almost certainly yes. Broward County inspectors require adequate service capacity and modern grounding for any permitted ADU, and most 1970s panels are 100-amp with no spare space. We include panel evaluation in every initial consultation and price the upgrade upfront if needed. Call (844) 665-0162 for a free assessment of your current service.
You coordinate with Broward County’s surface water management rules and engineer drainage into the foundation design. In Plantation’s western areas near the Everglades boundary, the seasonal water table can rise within one to two feet of grade during June-October. We schedule excavation outside wet season when possible, use pier or raised-slab designs where appropriate, and manage dewatering permits if needed. Call (844) 665-0162 to discuss your site’s specific drainage conditions.
The most common hidden costs are impact-rated window and door replacement, electrical panel upgrades from 100-amp to 200-amp service, and supply plumbing updates to meet current material standards. Florida Building Code treats any permitted addition as a trigger for whole-house compliance on life-safety systems. We identify these requirements in our first site visit so they don’t become mid-project surprises. Call (844) 665-0162 for a code-compliance preview of your home.
Yes - any conversion of garage space to habitable living space requires full permitting through Broward County with Plantation’s zoning overlay. Inspectors will verify structural adequacy, egress windows, hardwired smoke and CO detection, separate utility metering if rented, and impact-rated fenestration. Unpermitted conversions create insurance and liability problems that aren’t worth the risk. Call (844) 665-0162 and we’ll handle the permit sequence start to finish.
Ready to expand what’s possible with your Plantation home? Call Groundwork Construction Co. of Miami at (844) 665-0162 for a free, on-site estimate. We’ll walk your property, identify the code triggers specific to your home’s age and neighborhood, and give you a detailed scope with real numbers - no vague promises, no hidden gaps.
Written by Raymond Estevez, Owner at Groundwork Construction Co. of Miami, serving Plantation and central Broward County.