Fast, Reliable Home Additions & ADU Across Hollywood
Home additions and ADU construction in Hollywood, FL 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. If you’re expanding a 1960s CBS home near Yellow Green or adding a garage apartment off Hollywood Boulevard, call us at (844) 665-0162 for a free estimate.
Why Groundwork Construction Co. of Miami Is Hollywood’s Preferred Home Additions & ADU Company
We’ve built our reputation in Hollywood by treating every addition and ADU as a structural project, not just extra square footage. Our clients in neighborhoods from East Hollywood to the Park East area tell us the same thing: they wanted one contractor who could handle the architecture, the HVHZ-compliant materials, and the city inspections without handing pieces off to separate trades.
Our response time to Hollywood is same-day for initial consultations, and we keep a dedicated permitting liaison at the Broward County Development Review Office because Hollywood sits in Florida’s strictest building zone. That local knowledge matters when a permit examiner flags a window schedule or fastener spec that would pass in Palm Beach County but fails here.
Raymond Estevez leads our team with a straightforward approach: you choose the brand, we handle the build. For Hollywood homeowners, that means access to impact-rated windows from Andersen, Pella, or PGT that carry proper Miami-Dade NOAs, not just standard Florida Product Approval. We’ve seen too many projects stall because a contractor assumed those were the same thing.
Our Home Additions & ADU Services in Hollywood
ADU Design & Permitting
Every ADU in Hollywood starts with a reality check on zoning and the HVHZ product-approval list. We handle the full design package, structural plans, and permit submission to the City of Hollywood’s Building Division, with one critical difference from general drafting services: we pre-qualify every window, door, and roofing assembly against Miami-Dade NOA listings before the application goes in. That single step has saved our Hollywood clients weeks of delay. Our Home Additions & ADU team manages the entire process, from site survey to certificate of occupancy.
Garage Conversion ADU
In the Yellow Green neighborhood (33020), we converted a 1960s CBS carport into a 400 sq ft ADU for a snowbird couple. We specified NOA-approved impact windows and a corrosion-resistant fastener schedule per HVHZ, and after the city inspector flagged the original aluminum windows, we swapped them out, keeping the project on schedule for their return in November. Hollywood’s older CBS homes make excellent garage conversion candidates because the existing slab and block walls often need only seismic tie-down upgrades and proper moisture barriers to meet current code.
New Detached ADU
Detached ADUs in Hollywood’s western ZIPs - 33024, 33025, and the planned communities off Stirling Road - typically involve new foundations, full utility connections, and separate meter setups with Florida Power & Light. We offer both traditional stick-built construction and prefab options from Mighty Buildings and Plant Prefab for homeowners who want faster timelines without sacrificing HVHZ compliance. Every detached unit we build in Hollywood includes proper roof-to-wall connections and impact-rated openings; there’s no shortcut around the HVHZ, and we don’t pretend otherwise.
Junior ADU & Interior Conversion
Junior ADUs, or JADUs, work well in Hollywood’s smaller 1950s-1970s homes where a separate entrance can be added to an existing bedroom wing or underutilized utility space. These projects stay under the California-style JADU size caps but must still meet Florida’s stringent egress, ventilation, and fire-separation requirements. We’ve completed JADU conversions in Hollywood’s Park East and Hillcrest areas that gave homeowners rental income without altering the home’s exterior footprint - a significant advantage when you’re working with limited lot coverage in older neighborhoods.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Hollywood
Groundwork works with 50+ recognized industry brands across every trade we touch, and for Hollywood’s ADU and addition market, that material breadth matters more than most places. You might want Cambria or Silestone countertops in a kitchenette, KraftMaid or Wellborn cabinetry for storage, and GAF or CertainTeed roofing overhead - all sourced through our partnerships, not whatever happens to be in a single vendor’s warehouse. For prefab ADU structures, we coordinate with Boxabl and Tuff Shed where the design fits the lot and the HVHZ requirements. You choose the brand, we handle the build. That principle keeps us from pushing proprietary products that might lack the Miami-Dade NOAs your Hollywood permit demands.
Common Home Additions & ADU Problems We See in Hollywood Homes
- Non-HVHZ windows and doors specified by out-of-county contractors. Standard Florida Product Approval doesn’t cut it in Hollywood. We regularly see permit rejections when contractors from Palm Beach or Central Florida submit assemblies without Miami-Dade NOAs, killing project schedules by weeks while replacement materials are sourced.
- Salt-air corrosion on coastal and near-coastal projects. Hollywood’s barrier island strip and properties near the Intracoastal Waterway need stainless or hot-dip galvanized fasteners, not standard galvanized or electro-plated hardware. We’ve replaced corroded structural connectors on additions that were barely five years old because the original contractor skipped this spec.
- Missed CCCL or DEP permitting for waterfront work. Construction on Hollywood’s ocean side or directly on the Intracoastal requires Florida Coastal Construction Control Line permits from the Department of Environmental Protection - a layer that inland Broward projects never see. Stop-work orders and fines follow when this gets overlooked.
- Undersized electrical service in pre-1992 CBS homes. Many Hollywood homes east of I-95 still run on 100-amp panels with aluminum branch wiring. Adding an ADU or significant room addition often requires a full service upgrade to 200 amps, plus GFCI and AFCI protection that wasn’t code when the house was built.
Pricing for Home Additions & ADU in Hollywood, FL
| Project Type | Typical Range in Hollywood |
|---|---|
| Home Addition (room addition, second story) | $45,000-$130,000 |
| ADU Construction (new detached unit) | $90,000-$220,000 |
| Garage Conversion ADU | $30,000-$80,000 |
These ranges reflect Hollywood’s specific conditions: HVHZ-rated materials cost more than standard assemblies, and older homes often need electrical, plumbing, or structural remediation before new square footage gets added. A garage conversion in a 1970s CBS home with updated service will land at the lower end; a new detached ADU with full utilities and impact-rated finishes on a coastal lot will trend higher. Site conditions, soil, and access drive final numbers more than any online estimator can capture. Call (844) 665-0162 for an exact quote - estimates are free, and we’ll walk your Hollywood property to identify the variables that matter.
We Also Serve Cities Near Hollywood
Our crews work throughout Broward County and into southern Palm Beach County, with regular projects in Hollywood and nearby Andover, Miramar, West Park, and West Hollywood. The same HVHZ expertise and material partnerships apply across our service area, though Hollywood’s specific permit requirements remain the most stringent we encounter.
Serving Hollywood, FL - Our Local Coverage Area
We’re based in the Hollywood 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 Hollywood
Yes. Hollywood sits in Florida’s High Velocity Hurricane Zone, and every window, door, and roofing assembly must carry a Miami-Dade Notice of Acceptance with an HVHZ listing - standard Florida Product Approval alone will not pass inspection. We pre-qualify all materials before permit submission to avoid the delays that derail out-of-county contractors. Call (844) 665-0162 and we’ll verify your selections against the current NOA database.
Yes, if the structure meets current setback, parking replacement, and habitability requirements. Hollywood’s 1950s-1970s CBS homes often need electrical service upgrades, moisture barrier remediation, and proper egress windows, but the existing slab and block walls are typically sound. We evaluate garage conversions during our free site visit and flag any code-upgrade needs upfront.
The first step is a zoning and feasibility review with the City of Hollywood’s Planning Division, which we handle as part of our design-build process. We’ll confirm your lot’s allowable coverage, setback compliance, and utility capacity before any design work begins. Starting with this review prevents expensive redesigns later in the process.
Most Florida contractors work under standard Florida Product Approval, but Hollywood’s HVHZ status requires the stricter Miami-Dade NOA system - a separate database, different test protocols, and additional fastener schedules that contractors from Palm Beach, Orange, or Hillsborough counties rarely encounter. We see permit rejections weekly from projects where this gap wasn’t caught early.
Yes. The barrier island falls under Florida’s Coastal Construction Control Line, requiring DEP permits for most new construction and substantial improvements, plus salt-air corrosion specs for all structural and finish materials. CCCL permitting adds 30-60 days to typical timelines, and setback rules are stricter than mainland Hollywood. We coordinate both city and DEP approvals for island projects.
Written by Raymond Estevez, Owner at Groundwork Construction Co., serving Hollywood since our founding in Miami.