What Does a Garage Conversion ADU Cost and Take in Hallandale Beach?
A garage conversion ADU in Hallandale Beach typically runs $30,000-$80,000 and takes 8-14 weeks from permit pull to final inspection. Most single-car conversions we see in the western neighborhoods off Hallandale Beach Boulevard fall toward the lower half of that range, while double-car garages needing structural reinforcement or plumbing relocation push higher. Call (844) 665-0162 and we’ll walk your specific space in person - estimates are free, and we can usually give you a bracketed number on the first visit.
Hallandale Beach’s housing stock shapes what this job actually looks like. The postwar single-family homes west of US-1 - many built in the 1950s through 1970s with attached garages on slab - are the most common candidates for conversion. These garages weren’t built for living, so the work involves more than drywall and a mini-split. We’re talking moisture barriers, insulation upgrades, possibly raising the slab or addressing the envelope to meet current Broward County residential code. That’s why the process matters as much as the price.
How We Convert a Garage to an ADU - Start to Finish
We’ve refined this into five clear stages. Homeowners know what they’re deciding and when, and nothing sits idle waiting for a trade to show up.
Stage 1: Site assessment and feasibility (3-5 days). We measure everything, photograph the existing slab, check ceiling height, and trace where electrical and plumbing currently run. You’ll decide here whether you’re keeping the garage door opening as a window wall or fully infilling it, and whether the ADU needs a kitchenette or just a wet bar. That choice alone swings the plumbing scope by thousands.
Stage 2: Design and permitting (4-8 weeks). Our draftsman produces plans for Broward County Building Code compliance, including energy calculations for the converted envelope. Hallandale Beach falls under the Florida Building Code’s wind-borne debris region, so any new windows or doors must be impact-rated or protected with approved shutters. We submit, handle corrections, and don’t start demo until the permit’s in hand.
Stage 3: Rough construction and MEP (3-5 weeks). Demo of the garage door and framing the new wall opening. If we’re adding a bathroom or kitchenette, this is when plumbing gets trenched through the slab - a real consideration in Hallandale Beach’s high water table, where we sometimes hit moisture and have to adjust our waterproofing strategy. Electrical panel capacity gets tested; many older homes need a service upgrade or subpanel to handle the additional load.
Stage 4: Insulation, drywall, and finishes (2-4 weeks). We use closed-cell spray foam on the roof deck and exterior walls for the thermal envelope Broward requires. Flooring goes down - tile, LVP, or polished concrete depending on your spec. This is when you’ll make your final fixture and material selections if you haven’t already.
Stage 5: Inspections and punch (1-2 weeks). Rough and final inspections for structural, electrical, plumbing, and energy compliance. We don’t consider a job complete until every item on the punch list is resolved and you’ve signed off.
Total elapsed time depends heavily on Broward County’s permit queue, which fluctuates seasonally. Planning your start for late spring often avoids the fall rush when hurricane-season repair permits flood the system.
The Spec Choices That Shape Your Garage Conversion ADU
Every garage conversion ADU in Hallandale Beach forces real decisions. These aren’t upsells - they’re the variables that determine how the space lives and what it costs.
- Garage door infill vs. window wall: Infill with matching stucco and a standard window is the budget path. A PGT or CGI impact-rated sliding glass door system turns the former garage opening into a light wall but adds $4,000-$8,000. For coastal Hallandale Beach, we typically recommend impact-rated if the ADU faces east or south.
- Slab treatment: Many existing garage slabs sit below finished floor height and lack a vapor barrier. You can build a raised wood subfloor with insulation beneath, or grind and polish the concrete with a topical moisture seal. The raised floor adds headroom flexibility and warmth; polished concrete is harder-wearing and lower cost but colder underfoot.
- Kitchenette scope: A wet bar with mini-fridge and microwave is one thing. A full kitchenette with cooktop, range hood, and dishwasher requires 240V electrical, grease-rated ventilation, and more square footage. For rental ADUs in Hallandale Beach, the full kitchenette usually pays back.
- HVAC approach: Ductless mini-split is standard - we size it for the load calc, not the room’s old garage dimensions. Some homeowners want to extend the main house’s central system, but that often requires upsizing the whole unit and isn’t worth the disruption.
- Bathroom addition: If the garage shares a wall with existing plumbing, you’re in luck. Running new waste lines through a slab in Hallandale Beach’s high water table means careful bedding and sometimes a sewage ejector pump if gravity flow won’t work.
Homeowners often pair the interior finish work with Cabinets & Countertops in Hallandale Beach to keep material selection under one roof, or tie in Backsplash, Tile & Flooring in Hallandale Beach for consistent flooring runs between the main house and new ADU.
What Garage Conversion ADU Costs in Hallandale Beach, FL
For Hallandale Beach garage conversions, budget $30,000-$80,000. Here’s what pushes you to either end:
| Cost Driver | Low-End Scenario | High-End Scenario |
|---|---|---|
| Garage size and condition | Single-car, dry slab, sound roof | Double-car, spalled slab, low ceiling |
| Plumbing/electrical relocation | Wet bar only, panel has capacity | Full kitchen and bath, new service |
| Structural work | Door infill only | Beam reinforcement, ceiling raise |
| Material grade | Standard LVP, stock cabinets, mini-split | Impact doors, Silestone counters, premium fixtures |
| Permit and inspection scope | Simple change of use | Multiple trades, energy compliance, impact documentation |
A written estimate from us includes demolition, rough and finish carpentry, electrical and plumbing rough-in, insulation, drywall, flooring, paint, and final cleanup. It does not include permit fees (typically $800-$2,200 in Broward County), appliance packages, window treatments, or landscaping repair. We itemize so you know where to adjust if the first number doesn’t fit.
Call (844) 665-0162 for an exact quote - estimates are free, and we’ll flag any slab or structural concerns on the first walkthrough.
What Hallandale Beach Homes Specifically Do to This Job
Hallandale Beach’s split personality as a city shapes every garage conversion ADU we bid here. The western single-family neighborhoods - the ones with garages to convert - sit on the same flat, high-water-table terrain as the condo towers, but they carry a different set of constraints.
These homes, mostly built between 1955 and 1980, predate the post-Hurricane Andrew code upgrades that rewrote Florida construction. Garages from that era weren’t designed as conditioned space: no vapor barriers under slabs, minimal if any wall insulation, and roof trusses that may not handle the additional load of drywall, insulation, and a mini-split hanging unit. We regularly find slab moisture readings above acceptable levels when we first test, which means the waterproofing strategy isn’t optional - it’s foundational.
The coastal position matters too. Hallandale Beach sits directly on the Atlantic, and the salt-laden air accelerates corrosion on any exposed metal. When we infill a garage door opening, we’re not just framing a wall; we’re specifying fasteners, flashings, and door hardware that won’t degrade in five years. Impact-rated windows and doors aren’t just code requirements here - they’re survival features when the next hurricane tracks up the coast.
Permitting through Broward County requires documentation we don’t see inland: wind-borne debris compliance for any new glazing, energy code forms showing the converted envelope meets the current standard, and sometimes flood elevation certificates if the property sits in a mapped zone. We handle all of it, but the documentation load adds time that homeowners in Pembroke Park or western Broward don’t face.
HOA rules can surprise you. Even some of the older single-family neighborhoods in Hallandale Beach have active associations with architectural review boards, and an ADU conversion triggers their process. We recommend pulling those covenants before we submit for permits - it’s cheaper to adjust plans than to fight an approval after the fact.
This work sits within our broader Home Additions & ADU in Hallandale Beach capability, and our Home Additions & ADU crew draws from the same trade teams whether we’re converting a garage or building from scratch. We cover Hallandale Beach directly from our Fort Lauderdale base, with no subcontractor handoffs.
Serving Hallandale Beach, FL - Our Local Coverage Area
We’re based in the Hallandale 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 Hallandale Beach
Most projects run 8-14 weeks from permit approval to final inspection, with permitting itself adding 4-8 weeks depending on Broward County’s queue. Starting in late spring typically avoids the fall permit backlog. Call (844) 665-0162 and we can check current turnaround times.
Yes - any change from garage to living space requires a Broward County building permit, plus electrical, plumbing, and mechanical permits if applicable. The process includes plan review, inspections at rough and final stages, and energy compliance documentation. We handle the full submission and scheduling.
Only if you’re building a simple studio without a kitchen or bath. Most Hallandale Beach homeowners want at minimum a wet bar and bathroom, which requires extending both systems. If your garage shares a wall with existing plumbing, costs stay lower; if we need to trench new lines through the slab, that pushes the budget.
A garage conversion ADU in Hallandale Beach is almost always cheaper than new detached construction. You’re working within an existing envelope, no foundation to pour, no roof to frame. The $30,000-$80,000 range for conversion compares to $90,000-$220,000 for detached ADU construction. The trade-off is square footage and layout constraints.
We warranty our workmanship for one year from substantial completion. Manufacturer warranties apply to materials - Kohler fixtures, Moen valves, Silestone or Caesarstone surfaces, the mini-split unit itself - and vary by brand and product line. We register all warranties in your name and provide documentation at closing.
Ready to Convert Your Hallandale Beach Garage?
Call (844) 665-0162 for a free on-site estimate. We’ll walk your garage, test the slab, check your panel capacity, and give you a bracketed price with no pressure. If you move forward, we handle permits, trades, and inspections - one contractor, every phase, from that first measurement to the final walkthrough.
Written by Raymond Estevez, Owner at Groundwork Construction Co., serving Hallandale Beach and South Florida.