Junior ADU & Interior Conversion in Coconut Creek, FL
A junior ADU & interior conversion in Coconut Creek transforms an existing bedroom, attached garage section, or underutilized interior space into a self-contained living unit with its own kitchenette, full bathroom, and separate entrance. Most projects we handle in Broward County run 8 to 14 weeks from permit approval to final inspection, with budgets typically landing between $45,000 and $130,000 depending on structural condition and finish level. Call (844) 665-0162 to schedule a free on-site assessment and written estimate.
How we do this job - the process
Every junior ADU & interior conversion follows a five-stage sequence. We’ve refined this through projects in Wynmoor Village condos and 1990s-era single-family homes across Coconut Creek’s eastern subdivisions, where the starting conditions differ dramatically.
Stage 1: Structural and systems assessment (3-5 days)
We open walls, inspect the slab or post-tension deck, map existing plumbing and electrical, and identify any corrosion in original cast-iron drains or aluminum wiring common in 1970s construction. You’ll decide at this stage whether to proceed with discovered repairs or adjust the layout to work around them. We document everything for the permit package.
Stage 2: Design and permit submission (2-4 weeks)
Our team drafts floor plans showing the new kitchenette, bathroom, egress window or door, and fire separation. For Coconut Creek projects, we submit to Broward County with Florida Building Code HVHZ wind-load calculations and impact-resistant opening specs. You’ll choose your material tier here - flooring, cabinetry, fixtures, countertop - so we can spec loads and rough-in dimensions precisely.
Stage 3: Rough construction and MEP (3-5 weeks)
Demolition is limited to the conversion zone. We frame new partitions, run dedicated electrical circuits including a sub-panel if required, rough in plumbing for the kitchenette and bath, and install exhaust and mini-split HVAC. You’ll make two site visits: one after framing to confirm door and window placements, another after MEP rough-in before we close walls.
Stage 4: Finish installation (2-3 weeks)
Cabinets, countertops, tile, flooring, fixtures, and appliances go in. For kitchenettes in compact junior ADUs, you’ll have decided between a 24-inch or 30-inch cooktop configuration and whether the refrigerator is under-counter or full-height - this choice ripples through cabinet layout and electrical load.
Stage 5: Inspection and closeout (1-2 weeks)
Broward County conducts final inspections for structural, electrical, plumbing, and fire separation. We address any corrections immediately, then deliver your certificate of occupancy and warranty documentation.
The options you’ll choose between
Junior ADU & interior conversion in Coconut Creek forces real trade-offs between space efficiency, durability, and budget. Here’s what we walk homeowners through:
- Kitchenette scale: A wet bar with microwave drawer and mini-fridge runs $3,500-$6,000 installed. A full cooking kitchenette with induction cooktop, apartment-size dishwasher, and standard refrigerator runs $8,000-$15,000. The larger configuration requires 240V service and more ventilation - worth it if the unit will house a family member long-term.
- Bathroom layout: A 32-inch shower stall with wall-hung vanity fits in 25 square feet and keeps plumbing clustered. A 60-inch tub or walk-in shower with double vanity needs 45+ square feet and often forces electrical panel relocation. In Wynmoor-era condos with post-tension slabs, every foot of new drain line is a structural consideration.
- Flooring: Luxury vinyl plank handles Coconut Creek’s humidity and installs over imperfect slabs without self-leveling - budget-friendly and fast. Porcelain tile lasts longer but adds $2-$4 per square foot in materials and labor, with more demanding subfloor prep. We don’t recommend solid hardwood; the seasonal humidity swing in unconditioned spaces during vacancy destroys it.
- Countertops: Laminate surfaces cost less and suit rental-oriented conversions. Engineered quartz from Silestone or Caesarstone resists staining and stands up to tenant turnover, though the material premium runs $30-$60 per square foot installed over laminate. For a family-member unit where appearance matters, we often spec Caesarstone’s concrete-look finishes.
- Egress and separation: Florida code requires sleeping rooms to have emergency egress and the ADU to maintain one-hour fire separation from the main dwelling. A new exterior door with impact-rated glass costs $2,800-$5,500. Converting an existing window to egress size is cheaper but depends on the wall’s structural role and HVHZ wind-load requirements.
What Junior ADU & Interior Conversion costs in Coconut Creek, FL
| Component | Typical Range |
|---|---|
| Junior ADU & Interior Conversion (total project) | $45,000 - $130,000 |
| Kitchenette (wet bar to full cooking) | $3,500 - $15,000 |
| Bathroom addition or renovation | $9,000 - $28,000 |
| Impact-rated egress door/window | $2,800 - $5,500 |
| Post-tension slab remediation (if needed) | $4,000 - $12,000 |
| Electrical sub-panel and service upgrade | $2,500 - $6,500 |
Five factors push your number within that $45,000-$130,000 band. First, existing condition: a 1990s single-family room with modern plumbing and electrical starts clean; a 1978 Wynmoor unit with corroded drains and spalling concrete needs remediation before we touch finishes. Second, plumbing relocation: keeping the new bathroom and kitchenette clustered near existing stacks saves $5,000-$12,000 versus running new drain lines across a post-tension slab. Third, structural modifications: removing a load-bearing wall for open flow requires engineered beams and Broward County structural inspection - necessary sometimes, expensive always. Fourth, material grade: laminate and stock cabinetry keep costs down; quartz, custom cabinets, and name-brand fixtures from Kohler or Moen move the needle. Fifth, permit scope: a simple interior conversion with no exterior changes faces fewer inspections than one requiring new windows, doors, and HVAC equipment.
Our written estimates itemize labor, materials, permit fees, and a contingency line for concealed conditions. They don’t include homeowner-selected appliances, window treatments, or furniture - we specify what’s ours and what’s yours.
What Coconut Creek homes specifically do to this job
Coconut Creek’s housing stock splits into two eras, and each shapes junior ADU & interior conversion differently. The massive condo communities like Wynmoor Village, built in the late 1970s and early 1980s, present a construction type we don’t see in Pompano Beach or Margate at this scale: post-tension concrete slabs with tendons that have spent forty-plus years in salt-laden, high-humidity air. We’ve opened walls in Wynmoor units to find snapped cables and spalling concrete that must be structurally engineered around before Broward County will issue a renovation permit. Florida’s post-Surfside SB 4-D milestone inspection law keeps this work front-and-center - buildings over 30 years old are in continuous recertification cycles, meaning many homeowners are already mobilized for structural repairs and fold interior conversions into that capital improvement timeline.
The city’s 1990s-2000s single-family subdivisions, mostly east of Lyons Road, were built to later codes with conventional slab-on-grade construction and modern electrical. Here, junior ADU & interior conversion faces fewer structural surprises but must still meet HVHZ impact requirements for any new exterior openings. The high water table throughout Broward County also limits below-grade options - we don’t do basement conversions in Coconut Creek because groundwater intrusion starts at minimal excavation depth. Drainage and slab moisture management become part of the finish specification instead.
HOA rules add another layer unique to this market. Wynmoor and similar communities have architectural review boards with specific hours, contractor insurance requirements, and material restrictions. We handle the submission packet as part of our process, but the timeline is real - plan 2-4 weeks for board approval on top of municipal permitting.
Serving Coconut Creek, FL - Our Local Coverage Area
We’re based in the Coconut Creek 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 - Junior ADU & Interior Conversion in Coconut Creek
Most projects take 8 to 14 weeks from permit approval to final inspection, with 2-4 additional weeks for HOA architectural review in communities like Wynmoor. Call (844) 665-0162 and we’ll assess your specific timeline during a free on-site visit.
Yes - Broward County requires permits for any new dwelling unit, including electrical, plumbing, and structural inspections. Florida Building Code HVHZ compliance for impact-rated openings is mandatory. We prepare and manage the entire permit package as part of our service.
Sometimes, but rarely without some modification. The most cost-effective junior ADU & interior conversion places the new bathroom and kitchenette adjacent to existing drain stacks. Keeping all walls in place limits layout flexibility but can reduce costs by $5,000-$12,000. We’ll show you both options during assessment.
A junior ADU is a specific type of interior conversion - typically 500 square feet or less, within the existing footprint, with a kitchenette rather than full kitchen, and often without its own utility meter. A full interior conversion might reconfigure larger areas or include separate HVAC and electrical service. In Coconut Creek, most condo-based projects we see fit the junior ADU definition due to space constraints.
Junior ADU & interior conversion stands alone as an interior project, though many homeowners pair it with other work. If you’re expanding the home’s footprint as well, see our Home Additions & ADU in Coconut Creek page for the broader scope. Our Home Additions & ADU crew handles both types. Homeowners often combine this with Kitchen Design & Layout in Coconut Creek or Small & Partial Kitchen Remodels in Coconut Creek to update the main residence simultaneously.
We warranty our workmanship for one year from substantial completion. Manufacturer warranties apply to fixtures and materials - Kohler and Moen carry their own product guarantees, as do Silestone and Caesarstone for countertops. Structural repairs we perform carry separate engineering warranties where applicable. We provide all warranty documentation at project closeout.
Ready to talk through your space?
Call (844) 665-0162 for a free on-site estimate for junior ADU & interior conversion in Coconut Creek. Raymond Estevez or a member of our Coconut Creek team will walk your space, assess structural and systems conditions, and deliver a written estimate with real numbers - no pressure, no placeholder pricing.
Written by Raymond Estevez, Owner at Groundwork Construction Co., serving Coconut Creek and South Florida.