What Does a Garage Conversion ADU Cost and Take in Dania Beach?
A garage conversion ADU in Dania Beach typically runs $30,000-$80,000 and takes 10-16 weeks from permit approval to final inspection, assuming we’re working with an existing attached or detached garage on a single-family lot. Most Dania Beach homeowners call us at (844) 665-0162 after realizing their underused garage can become rental income or housing for family, but they’re unsure how Broward County’s floodplain rules and the city’s older housing stock affect the timeline. We’re Groundwork Construction Co., and we handle these conversions start to finish - including the structural, MEP, and finish work that turns a garage into a legal dwelling unit.
How We Convert a Garage to an ADU - Start to Finish
Every garage conversion ADU follows five stages, and each one has a decision point where your choices affect cost and schedule.
Stage 1: Existing conditions and code analysis (1-2 weeks). We measure the garage footprint, test the slab for moisture and level, and pull the original permit history from Broward County. In Dania Beach, we regularly see 1950s-1970s garages built on monolithic slabs with no vapor barrier and minimal rebar - fine for parking, questionable for living space. We also verify whether the structure sits in FEMA Zone AE, which determines if the conversion triggers substantial-improvement rules. You’ll decide here whether to proceed with the existing slab or break it out for a raised floor system.
Stage 2: Design and permit submission (4-8 weeks). We produce architectural plans showing the new layout, egress windows, kitchenette, bathroom, and electrical service upgrade. Because Dania Beach’s northern parcels sit under FAA Part 77 airspace near Fort Lauderdale-Hollywood International Airport, we check height restrictions even for single-story conversions - a step contractors in Hollywood don’t always need. We submit to Broward County Building Code Services and coordinate any HOA architectural review. Your decision here: finish materials and fixture grades, which we lock into the permit set.
Stage 3: Structural and MEP rough-in (3-5 weeks). We frame interior partitions, run new electrical circuits (typically 100-amp subpanel minimum), stub plumbing for kitchen and bath, and install mini-split HVAC. If the existing garage door opening becomes a living-room wall, we infill with concrete block to match the CBS construction common in Dania Beach’s older homes, then apply stucco with proper drainage plane. Salt-air exposure means we spec hot-dipped galvanized or stainless fasteners throughout - standard on our jobs, not an upsell.
Stage 4: Insulation, drywall, and finishes (3-4 weeks). We use closed-cell spray foam on the walls and roofline for humidity control, then hang moisture-resistant drywall. Flooring goes in last - tile, LVP, or polished concrete depending on your spec. This is where selections like Silestone or Caesarstone for the kitchenette countertop, or Kohler fixtures for the bath, get installed. We run a pre-inspection walkthrough with you to catch anything before the county arrives.
Stage 5: Final inspection and certificate of occupancy (1-2 weeks). Broward County inspects structural, electrical, plumbing, mechanical, and energy code compliance. We address any corrections immediately and deliver your CO. Most Dania Beach garage conversion ADU projects we complete pass on the first or second try because we front-load the code analysis.
The Options You’ll Choose Between for Your Garage Conversion ADU
No two conversions are identical, but these are the real forks in the road we’ve seen Dania Beach homeowners navigate:
- Slab-on-grade vs. raised floor system. Keep the existing concrete slab and add moisture mitigation (epoxy sealant + insulated subfloor) for $3,000-$6,000, or break it out and build a stem-wall or pier foundation to meet base flood elevation for $8,000-$18,000. The raised system is mandatory if your total project value triggers substantial-improvement rules under Broward’s FEMA compliance.
- Kitchenette scope: wet bar vs. full cooking. A compact refrigerator, microwave, and sink runs $4,000-$7,000. Adding a cooktop and range hood bumps you to $7,000-$12,000 and requires grease-duct venting through the roof or wall - more complex in CBS construction.
- Bathroom configuration: wet bath vs. separate shower. A wet bath (toilet, sink, and shower in one waterproof space) fits tight footprints for $5,000-$9,000. A separate shower stall with glass enclosure needs 30+ square feet and runs $8,000-$14,000.
- HVAC: mini-split vs. extending central. A ductless mini-split with heat pump costs $3,500-$6,500 and operates independently. Tapping into the main house’s central system requires duct runs through the attic or soffit and can stress an older unit - often not worth it in Dania Beach’s 1960s-era homes with undersized original equipment.
- Egress and natural light: enlarge existing vs. new cut. Converting a garage door opening to a window wall with sliding glass doors costs $4,000-$9,000 and transforms the space. Cutting new window openings in CBS walls runs $1,500-$3,500 per opening plus lintel engineering.
What Garage Conversion ADU Costs in Dania Beach, FL
| Cost Component | Typical Range |
|---|---|
| Basic garage conversion ADU (existing slab, modest finishes) | $30,000 - $45,000 |
| Mid-range conversion (raised floor, mid-grade fixtures) | $45,000 - $65,000 |
| High-end conversion (flood-elevation compliance, premium finishes) | $65,000 - $80,000 |
| Full home addition (for comparison) | $45,000 - $130,000 |
| Detached ADU new construction (for comparison) | $90,000 - $220,000 |
Five variables push your garage conversion ADU toward the high or low end of that $30,000-$80,000 span:
1. Existing garage condition. A 1970s block garage with a cracked slab, corroded rebar from salt-air intrusion, and no existing electrical beyond a single 20-amp circuit needs $8,000-$15,000 in remediation before we frame the first wall.
2. Plumbing and electrical relocation distance. Tying into the main house’s sewer line 15 feet away is straightforward. Running 60 feet across the yard to the street connection, or upgrading a 100-amp service to 200 amps, adds $4,000-$10,000.
3. Material grade selections. LVP flooring and stock cabinetry keep costs down. Tile, Silestone or Caesarstone counters, and Kohler or Moen fixture packages add 15-30% to the finish budget but hold resale value better in Dania Beach’s rental market.
4. Permit scope and floodplain compliance. If your assessed value is low enough that the conversion stays under the 50% substantial-improvement threshold, you avoid the stem-wall foundation requirement. We’ve seen this single determination swing costs by $10,000-$18,000.
5. HOA and architectural review. Some Dania Beach neighborhoods require design committee approval before county permitting, adding 2-4 weeks and potential revision costs.
Our written estimates include demolition, rough and finish carpentry, MEP, insulation, drywall, flooring, fixtures, and permit fees. They do not include appliance packages, window treatments, or landscaping repair - we itemize those separately so you control the spend.
What Dania Beach Homes Specifically Do to This Job
Dania Beach’s housing stock is unlike anywhere else in Broward County, and it reshapes every garage conversion ADU we build here.
The city incorporated in 1904, and its residential core is dense with 1940s-1970s concrete block and stucco homes built before modern hurricane strapping, impact glazing, and flood-elevation standards. When we open a garage in the Lakes neighborhood or near Dania Beach Boulevard, we regularly find slabs poured without vapor barriers, rebar showing surface rust from decades of salt-air exposure, and original roof trusses with no hurricane clips. Bringing these structures to current Florida Building Code for habitable space means structural upgrades that a 1990s Miramar home wouldn’t need.
Nearly all of Dania Beach sits in FEMA Zone AE, and the flat terrain means storm surge reaches far inland. Any garage conversion ADU that crosses the substantial-improvement threshold must elevate the finished floor above base flood elevation - often 8-10 feet NGVD. We’ve completed conversions where the garage became the lower level of a raised structure, with the living space built above on a new framed floor. That’s a different project than a simple garage finish, and we price it accordingly.
The most distinctive constraint is the FAA overlay. For properties north of Griffin Road and east of US-1, the Fort Lauderdale-Hollywood International Airport approach corridors sit directly overhead. We’ve had garage conversion ADU projects where a planned second-story addition above the converted space triggered a 7460-1 aeronautical study - a weeks-long FAA review that contractors in Hallandale Beach or West Hollywood never encounter. Even single-story conversions can face height restrictions if the homeowner later wants to build upward, so we plan for that possibility in the foundation and framing.
Salt-air corrosion is constant. In Dania Beach, we spec stainless steel or hot-dipped galvanized fasteners as standard, use copper or PEX plumbing instead of galvanized steel, and select HVAC condensers with coastal-grade coatings. These aren’t premium upgrades here - they’re minimum viable specs for a structure that lasts.
Homeowners often pair a garage conversion ADU with interior upgrades to the main house. If you’re already living through construction, it makes sense to tackle Cabinets & Countertops in Dania Beach or Backsplash, Tile & Flooring in Dania Beach under the same contract. And if your project grows beyond the garage, we can expand to a full Home Additions & ADU in Dania Beach scope - our Home Additions & ADU crew handles everything from driveway to roofline with one point of accountability.
We serve Dania Beach from our Fort Lauderdale base, and we’re familiar with Broward County’s permitting portals, inspection schedules, and the specific plan reviewers who handle ADU work.
Serving Dania Beach, FL - Our Local Coverage Area
We’re based in the Dania Beach 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 Dania Beach
From permit approval to certificate of occupancy, expect 10-16 weeks. Permit submission to approval typically adds 4-8 weeks in Broward County, longer if FAA height review or HOA architectural review is required. Call (844) 665-0162 and we’ll check your property’s specific timeline during a free on-site estimate.
Yes - absolutely, and attempting this without permits risks fines, insurance denial, and forced demolition. Broward County requires building, electrical, plumbing, and mechanical permits, plus energy compliance documentation. Because Dania Beach sits in FEMA Zone AE, floodplain compliance review is also standard. We pull and manage all permits as part of our project scope.
Only if your garage already has adequate service - which is rare. Most Dania Beach garages have a single 20-amp circuit and no plumbing. A legal ADU requires a kitchenette with hot water, a bathroom with sewer connection, and enough electrical capacity for HVAC, appliances, and general loads. We minimize trenching and disruption by routing new utilities along the most direct path, but some extension is almost always necessary.
The lowest-cost path is a basic studio layout on the existing slab with a wet bath, mini-split HVAC, modest kitchenette, and standard finishes - typically $30,000-$40,000. Avoiding flood-elevation compliance (staying under the substantial-improvement threshold) is the biggest cost control. We can assess your assessed value and project scope to confirm this during our first visit.
We warranty our workmanship for one year, and all materials carry their manufacturer warranties - typically 10 years for major fixtures, lifetime for some cabinet lines. Because we’re a single-source contractor, you call us for any issue; we coordinate with the manufacturer directly. Our ADU and home addition work is backed by the same accountability we apply to every project category we handle.
Ready to Convert Your Dania Beach Garage?
Call (844) 665-0162 for a free on-site estimate. We’ll assess your garage’s existing condition, check permit and floodplain requirements for your specific Dania Beach property, and deliver a written scope with line-item pricing. No pressure, no generic proposals - just the specific numbers and timeline for your garage conversion ADU.
Written by Raymond Estevez, Owner at Groundwork Construction Co., serving Dania Beach since our founding.