Garage Conversion ADU in West Gate, FL: What It Costs and How Long It Takes
A garage conversion ADU in West Gate turns your existing garage into a permitted, livable accessory dwelling unit with its own kitchenette, bathroom, sleeping area, and separate entrance. Most projects we handle in the 33409 area take 10 to 16 weeks from permit approval to final inspection, with pricing typically landing between $30,000 and $80,000 depending on structure, systems, and finish level. Call (844) 665-0162 and we’ll walk your specific garage and give you a written, line-item estimate, usually within 48 hours.
How We Convert a Garage into an ADU in West Gate
We’ve done enough of these in Palm Beach County to know where the delays hide. Here’s the actual sequence, what you’re deciding at each point, and how long each stage runs.
Stage 1: Feasibility and existing-condition assessment (1-2 weeks)
We measure your garage slab, roof structure, and existing electrical panel. We check whether your garage shares a wall with the main house, which affects fire-separation requirements under the Florida Building Code. You’ll decide at this stage whether you want a full kitchen or a kitchenette, and whether the ADU needs its own meter or can sub-meter from the house. We also pull the property survey to confirm setback compliance under Palm Beach County zoning, since West Gate’s unincorporated status means county rules apply, not city rules.
Stage 2: Design and permit drawings (3-5 weeks)
Our drafting team produces plans showing the conversion layout, structural modifications, and tie-in points for plumbing and HVAC. This is where you choose your material tier, which directly affects the permit valuation and therefore your permit fees. We submit to the Palm Beach County Building Division, not a city office, and we handle the plan-review corrections that almost always come back on ADU submissions. You don’t do anything here except approve the final layout.
Stage 3: Demolition and rough prep (1-2 weeks)
We strip the garage interior, remove the overhead door and frame in a proper wall with an egress door and window, and cut the slab for plumbing if you’re adding a bathroom or kitchenette. On 1960s-1980s CBS homes in West Gate, we frequently find the original slab lacks a vapor barrier adequate for living-space use. If moisture readings come back high, we specify a sealed overlay or, in severe cases, partial slab replacement. This is the stage where hidden conditions can shift your price.
Stage 4: Rough trades and inspection (3-5 weeks)
Electrical, plumbing, and HVAC rough-in happen in sequence, each followed by a county inspection. We upgrade the electrical service if needed, many older West Gate panels can’t handle an additional subpanel or meter without a service increase. We also install a mini-split system rather than extending ductwork, which avoids overloading your main HVAC and gives the ADU independent climate control. Palm Beach County inspectors are thorough on ADU energy-compliance and wind-load documentation; we submit the product approval sheets for every window and door upfront so inspections don’t stall.
Stage 5: Finish work and final inspection (2-3 weeks)
Drywall, flooring, cabinetry, fixtures, and paint. We coordinate our own crews for carpentry and finishes, which is where being a single-source contractor matters, you’re not waiting for a tile guy to show up after the cabinet installer cancels. Final inspection covers egress, smoke detection, energy compliance, and general life-safety. Once we pass, you get the certificate of occupancy and the ADU is rentable or move-in ready.
Homeowners often pair the interior finish of a garage conversion ADU with updated flooring in the main house. If you’re considering that, see our Backsplash, Tile & Flooring in West Gate page for material options that coordinate across both spaces.
The Options You’ll Choose Between for Your Garage Conversion ADU
Every decision below moves your final number and how the space functions. We lay out the honest trade-offs so you’re not guessing.
- Kitchenette vs. full kitchen: A kitchenette with a two-burner cooktop, under-counter fridge, and single-bowl sink runs $4,000-$8,000 installed. A full kitchen with standard range, dishwasher, and full-size refrigerator adds $12,000-$22,000. For a rental ADU, the kitchenette is usually sufficient and easier to maintain. For aging-parent use or long-term guests, the full kitchen preserves normalcy.
- Wet bath vs. full bathroom: A wet bath, where the shower shares the floor space with the toilet and sink, fits in as little as 30 square feet and costs $6,000-$10,000. A full bathroom with a 32-inch vanity and separate shower stall needs 40-50 square feet and runs $10,000-$18,000. Wet baths work well in single-occupancy ADUs; full bathrooms add resale value and appeal to a broader rental market.
- Slab strategy: If your garage slab tests dry and level, we seal it and install LVP or tile directly, the cheapest path at $3-$8 per square foot finished. If moisture is present, we specify a sealed concrete overlay or, for severe cases, cut and repour sections, adding $3,000-$7,000. We don’t cover damp slabs with flooring; we’ve seen that fail within two years in West Gate’s high water-table conditions.
- HVAC approach: A wall-mounted mini-split runs $3,500-$6,500 installed and operates independently. Extending central ductwork from the main house costs $2,000-$4,000 if the furnace/air handler has capacity, but many 1970s-era systems don’t, and you’re then looking at a full replacement. We test capacity before recommending this route.
- Entry and egress configuration: Converting the overhead door to a framed wall with a man door and window is standard, $2,500-$5,000 depending on window size and impact rating. If you want to preserve garage-door appearance for HOA compliance or aesthetic reasons, we can install a faux garage door over the framed wall, adding $1,500-$3,000.
- Independent meter vs. sub-meter: FPL requires a separate service drop and meter for a full second dwelling unit, which runs $4,000-$8,000 including trenching and panel work. A sub-meter from your existing panel costs under $1,000 but means you can’t separately bill a tenant for electricity. Your choice depends on whether you’re renting the unit or housing family.
Many West Gate homeowners doing a garage conversion ADU as part of a full property update also look at kitchen upgrades in the main house. Our Cabinets & Countertops in West Gate page covers the brand options we carry, from KraftMaid to Wellborn, if you want to coordinate finishes across both units.
What Garage Conversion ADU Costs in West Gate, FL
| Cost Component | Typical Range |
|---|---|
| Basic garage conversion ADU (kitchenette, wet bath, LVP, mini-split) | $30,000 - $50,000 |
| Mid-range conversion (full kitchen, full bath, tile, upgraded finishes) | $50,000 - $65,000 |
| High-end conversion (full kitchen, custom cabinetry, slab repair, independent meter, impact windows) | $65,000 - $80,000 |
Five factors move you up or down this range:
1. Existing garage condition. A detached garage in good structural shape with a dry slab starts at the low end. Attached garages sharing a firewall with the house require more complex fire-separation detailing. Sagging roof structures, termite damage, or failed slabs add $5,000-$15,000 in remediation before conversion work begins.
2. Plumbing and electrical relocation distance. If your main sewer line and electrical panel sit on the same wall as the garage, tying in is straightforward. Running new lines 40 feet across a 1960s slab with post-tension cables or unknown embedments gets expensive fast. We’ve seen $3,000 tie-ins and $12,000 tie-ins on otherwise similar jobs.
3. Material grade and fixture selection. LVP flooring at $3 per square foot versus porcelain tile at $12 per square foot. Stock cabinetry versus semi-custom. These choices compound across a small space. We quote three finish tiers so you can see where your money lands.
4. Permit scope and code triggers. Palm Beach County requires full current-code compliance for any ADU permit. If your existing home lacks hurricane straps, impact-rated openings, or proper tie-downs, the county will require remediation as a condition of approving the ADU. This isn’t optional, and it isn’t the contractor padding the bill; it’s the jurisdictional reality of building in unincorporated West Gate.
5. Independent utilities. Adding a separate FPL meter and potentially a separate water meter adds $4,000-$10,000 depending on trench length and existing service capacity. Sub-metering avoids this but limits rental flexibility.
Our written estimates include all labor, materials, permits, and inspections for the conversion scope we define together. They do not include separate utility connection fees charged by FPL or Palm Beach County Utilities, furniture, appliances you purchase directly, or landscaping repair after trenching. We flag these exclusions upfront so there’s no surprise.
What West Gate Homes Specifically Do to This Job
West Gate sits in an unincorporated pocket of Palm Beach County, and that single fact shapes every garage conversion ADU we build here. Permits route through the Palm Beach County Building Division on Australian Avenue, not through any municipal building department. Contractors who regularly work in incorporated West Palm Beach or Lake Worth often assume the same staff, same forms, and same timelines apply. They don’t. County plan review for ADUs runs 3-4 weeks at minimum, and inspection scheduling operates on a different calendar than city offices. We’ve seen out-of-area contractors lose two months waiting for corrections they didn’t anticipate because they submitted city-format plans to a county desk.
The housing stock in 33409 is overwhelmingly concrete block construction from the 1960s through 1980s, built before Florida’s post-Hurricane Andrew code overhaul. When we open walls for a garage conversion ADU, we regularly find missing or inadequate roof-to-wall straps, non-impact-rated garage doors and windows, and original electrical panels that won’t accept modern load requirements. The county inspector will flag these. We build that remediation into our initial assessment so you’re not mid-project with an unexpected $8,000 code-compliance bill.
Palm Beach County’s high water table, often within a few feet of grade, means moisture management isn’t optional. We’ve torn out conversions done by others where inadequate vapor barriers led to mold and flooring failure within three years. We test every slab with a calcium chloride kit before specifying finishes.
Finally, West Gate’s county zoning means setback and accessory-structure rules differ from neighboring cities. An ADU that complies in West Palm Beach might not comply on your West Gate lot. We verify zoning before we draft, not after permit submission.
Our Home Additions & ADU in West Gate page covers the broader scope if you’re also considering a detached ADU or room addition. For the full range of how we expand residential space, see our Home Additions & ADU service hub.
We cover West Gate and surrounding Palm Beach County communities from our Fort Lauderdale base, with project teams assigned by area so you’re working with people who know the local inspectors and typical conditions.
Serving West Gate, FL - Our Local Coverage Area
We’re based in the West Gate 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 Gate
Most garage conversion ADU projects in West Gate take 10 to 16 weeks from permit approval to final certificate of occupancy, with permit review itself adding 3-5 weeks through the Palm Beach County Building Division. Delays usually come from plan corrections or hidden conditions in the existing structure, not from our construction schedule. Call (844) 665-0162 and we can assess your specific garage for a tighter timeline.
Yes, absolutely. West Gate is unincorporated Palm Beach County, so you need a county building permit for any garage conversion ADU, and the county will require full current-code compliance including energy, egress, and wind-load standards. Unpermitted conversions can’t be legally rented and will block sale or refinance until remediated. We handle permit submission and inspection scheduling as part of our standard process.
You can avoid major utility relocation if your garage already sits near your main sewer line and electrical panel, but you’ll still need to extend lines into the new kitchenette or bathroom and upgrade the panel if capacity is insufficient. On 1960s-1980s West Gate homes, panel upgrades are common. We test capacity during feasibility and tell you before design starts whether a service increase is likely.
A garage conversion ADU in West Gate typically costs $30,000-$80,000, while a detached ADU starts around $90,000 and runs to $220,000. The conversion is cheaper because you’re using existing walls, roof, and slab. However, if your garage needs extensive structural or slab remediation, the gap narrows. We quote both paths when the existing structure is marginal so you can compare real numbers.
We warranty our workmanship on garage conversion ADU projects for one year from final inspection, and all materials carry their manufacturer warranties, which range from 10 years on cabinetry to lifetime on some roofing and window products. We register manufacturer warranties in your name and provide documentation at project closeout. For warranty service, you call our main line and we dispatch from our local team, not a third-party service network.
Get a Free On-Site Estimate for Your Garage Conversion ADU in West Gate
Call (844) 665-0162 or fill out our contact form. We’ll schedule a walk-through of your garage, test the slab, assess your panel and plumbing access, and return a written, line-item estimate within two business days. No deposit required to start the conversation. Raymond Estevez and our West Gate project team handle every phase in-house, from permit drawings through final inspection, so you have one point of contact and one accountable crew.
Written by Raymond Estevez, Owner at Groundwork Construction Co., serving West Gate and Palm Beach County since our founding.