What Does a Garage Conversion ADU Cost and Involve in West Hollywood?
A garage conversion ADU in West Hollywood transforms your existing garage into a permitted, self-contained living unit with its own kitchen, bathroom, sleeping area, and separate entrance. Most projects we handle here run 4 to 6 months from permit application to final inspection, with construction itself taking 10 to 14 weeks. In the Fort Lauderdale market, including West Hollywood, garage conversion ADU projects typically range from $30,000 to $80,000. Call (844) 665-0162 and we’ll walk your specific garage and give you a written estimate at no charge.
How We Convert a Garage Into an ADU - Start to Finish
Every garage conversion ADU follows a predictable sequence, but the timeline shifts based on what your existing structure needs. Here’s how we stage it:
Stage 1: Structural and utility assessment (Week 1)
We open the walls and evaluate what you’ve got. Most West Hollywood garages from the 1950s and 1960s sit on concrete slabs that may or may not meet current flood-elevation requirements for habitable space. We test for moisture intrusion, check whether the existing slab has a vapor barrier, and map your electrical panel capacity. Many homes in the 33021 ZIP still run on 100-amp service, which won’t handle a kitchen, bathroom, and HVAC load. You’ll decide at this stage whether to upgrade the panel or explore a mini-split and tankless water heater to reduce electrical demand.
Stage 2: Design and permit drawings (Weeks 2-6)
Because West Hollywood sits in unincorporated Broward County, we file directly with the Broward County Building Division, not a municipal office. This matters. The County’s review queue and fee structure differ from neighboring Hollywood, and we build that into our timeline. Drawings must show compliance with the Florida Building Code’s High-Velocity Hurricane Zone requirements, including impact-rated openings or shutters. You’ll choose your layout here: studio configuration versus one-bedroom, where the kitchen wall goes, and whether the bathroom stacks against existing plumbing.
Stage 3: Demolition and rough construction (Weeks 7-10)
We strip the garage to block, raise the slab if flood elevation requires it, and frame new interior partitions. This is when we relocate or extend plumbing and electrical. If your garage shares a roofline with the main house, we often need to reframe the front wall where the overhead door came out, adding a proper header and tying into the existing roof structure. You’ll make final decisions on window and door placements, since these affect both natural light and hurricane compliance.
Stage 4: Systems and finishes (Weeks 11-14)
HVAC rough-in, plumbing pressure tests, electrical inspection, insulation, drywall, flooring, cabinets, and fixtures. For flooring, we see a lot of homeowners in West Hollywood moving away from the original terrazzo look toward luxury vinyl plank or tile that handles humidity better. You’ll select your kitchen package and bathroom fixtures during this phase. We work with brands like Kohler and Moen for plumbing fixtures, and if you’re adding a kitchenette, we can source Silestone or Caesarstone countertops through our cabinet partners.
Stage 5: Final inspection and certificate of occupancy (Weeks 15-16)
Broward County inspects for code compliance, fire separation between the ADU and main house, egress requirements, and utility connections. We don’t call this complete until you have the CO in hand. Many homeowners pair this phase with interior finishing touches through our Cabinets & Countertops in West Hollywood team or Backsplash, Tile & Flooring in West Hollywood crew to match the new ADU with a refreshed main house.
The Options You’ll Choose Between for Your Garage Conversion ADU
- Foundation approach: Keep the existing slab if it meets flood elevation, or raise it with a stem wall and new pour. Keeping it saves $8,000-$15,000 but limits your floor finish options and may require a step down from the main house. Raising creates level access and better moisture control, critical in South Florida’s high water table.
- Kitchen configuration: Full kitchen with range and oven, or kitchenette with cooktop and compact appliances. A full kitchen adds $4,000-$7,000 but rents for more if you’re income-focused. Kitchenettes work better for family use or caregiver quarters.
- Bathroom placement: Stack against existing house plumbing to minimize trenching and pipe runs, or locate on the opposite wall for better layout. Stacking typically saves $2,500-$4,000 in plumbing labor.
- HVAC strategy: Ductless mini-split system ($3,000-$5,500 installed) or tie into the main house’s central system. Mini-splits are nearly universal for garage conversion ADUs in West Hollywood because they avoid overloading older electrical panels and provide independent climate control.
- Exterior door and window package: Standard impact-rated vinyl windows, or upgrade to aluminum-clad architectural units from our Andersen or Pella lines. The upgrade runs 30-40% more but significantly improves rental appeal and long-term durability against salt air and UV degradation.
- Connection to main house: Fully separate entrance with no interior access, or a connecting door for family use. Fire-rated separation is required either way under Broward County code, but the connecting door adds $800-$1,200 in hardware and framing.
What Garage Conversion ADU Costs in West Hollywood, FL
Garage conversion ADU projects in West Hollywood fall between $30,000 and $80,000, with most of our projects clustering in the $45,000-$65,000 range.
Five factors push you toward the high or low end:
- Existing garage condition: A dry, structurally sound block garage with adequate headroom starts you low. A detached garage with a failing roof, moisture-compromised slab, or termite damage pushes you high.
- Utility extension distance: Tapping into plumbing and electrical on the same wall as your main house keeps costs down. Running new lines 40 feet across the yard, or upgrading from a 100-amp to 200-amp service, adds $4,000-$8,000.
- Flood elevation requirements: Broward County enforces FEMA flood zone standards. If your slab sits below the required elevation, raising it triggers engineered fill, compaction, and re-inspection cycles.
- Material and fixture grade: Builder-grade LVP, stock cabinetry, and basic fixtures keep you at the lower end. Moving to Silestone or Caesarstone countertops, Moen fixtures, and custom cabinet layouts adds 15-25%.
- Permit scope and hurricane compliance: Simple conversions with existing impact-rated openings move faster. Replacing non-compliant windows and doors, adding shutters, or engineering roof tie-downs for current wind-load standards adds both material cost and inspection rounds.
Our written estimates include demolition, rough and finish construction, permitted electrical and plumbing, HVAC, insulation, drywall, flooring, and fixtures. They do not include landscape restoration beyond the immediate work area, separate utility meter installation if you want one, or furniture and window treatments.
What West Hollywood Homes Specifically Do to This Job
West Hollywood’s unincorporated status changes how your garage conversion ADU gets built. Every permit routes through the Broward County Building Division on Sunrise Boulevard, not a city hall around the corner. Out-of-area contractors often stumble here, missing the County’s specific notice-board requirements or scheduling inspections through the wrong portal. We’ve seen projects lose a full week to that confusion. Our team knows the County’s inspectors and their particular focus on hurricane-hardening compliance for pre-Andrew construction.
The housing stock itself is the other major variable. Those 1950s and 1960s CBS homes along streets like Grant Street and Pierce Street were built when South Florida’s building code barely addressed wind loads. Original jalousie windows, uninsulated block walls, and shallow roof footings are common. When we convert a garage on one of these homes, we’re almost always bringing the structure up to current High-Velocity Hurricane Zone standards, not just remodeling. That means impact-rated openings, proper roof-to-wall connections, and sometimes structural reinforcement that wasn’t in the original budget conversation.
The humidity and canal-adjacent water table add their own complications. We regularly find garages with no vapor barrier under the slab, which means moisture wicking up through the concrete year-round. Without addressing that in the design phase, your new flooring fails in two to three years. We also plan for corrosion-resistant fasteners and hardware on every exterior connection, standard practice for us but not universal among contractors who don’t build regularly in coastal Broward County.
If you’re considering this as part of a broader expansion, our Home Additions & ADU in West Hollywood page covers the full scope, and our Home Additions & ADU service hub explains how we approach every project type. We build across West Hollywood and the surrounding Broward County area.
Serving West Hollywood, FL - Our Local Coverage Area
We’re based in the West 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.
Frequently Asked - Garage Conversion ADU in West Hollywood
Most garage conversion ADU projects take 4 to 6 months from permit filing to certificate of occupancy, with actual construction lasting 10 to 14 weeks. Broward County’s permit review typically runs 3 to 5 weeks, longer if your property requires flood-zone verification or HOA documentation. Call (844) 665-0162 and we’ll give you a realistic timeline based on your specific garage and property.
Yes, absolutely. Because West Hollywood is unincorporated, permits come from the Broward County Building Division, not a city office. The permit package must include architectural drawings, structural calculations if you’re modifying roof or wall loads, and proof of hurricane compliance for all openings. We handle the entire filing and inspection schedule as part of our project management.
You can minimize relocation, but you cannot eliminate it entirely. A legal ADU requires a kitchen sink, bathroom, and independent electrical circuits, which almost always means new pipe runs and dedicated electrical lines. If your garage shares a wall with your main house’s kitchen and bathroom, stacking the new utilities against that wall keeps costs down. We design for the shortest, most efficient routing during our assessment phase.
The lowest-cost path uses your existing slab, stacks the bathroom and kitchen against existing utilities, installs a ductless mini-split for HVAC, and selects builder-grade finishes throughout. Even at the lean end, budget $30,000-$40,000 for a permitted, code-compliant conversion in West Hollywood. Cutting below that typically means skipping required permits or hurricane-rated openings, which creates liability and resale problems.
We warranty our workmanship for one year from completion, and all materials carry their manufacturer’s warranty, which ranges from 10 years to lifetime depending on the product. Our window and door installations, for example, are backed by the manufacturer’s warranty on the unit itself, plus our installation guarantee against air or water infiltration from improper sealing. We provide all warranty documentation at project closeout.
Ready to Convert Your West Hollywood Garage?
Call (844) 665-0162 to schedule a free on-site estimate. We’ll walk your garage, assess your slab, electrical panel, and existing structure, and return a detailed written proposal with line-item pricing. No obligation, no pressure. Just clear numbers from a contractor who knows Broward County’s permitting path and builds garage conversion ADU projects across West Hollywood regularly.
Written by Raymond Estevez, Owner at Groundwork Construction Co., serving West Hollywood and South Florida.