Fast, Reliable Home Additions & ADU Across Miramar
Home additions and ADU construction in Miramar typically run $45,000-$130,000 for room additions and $90,000-$220,000 for detached ADUs, with most projects requiring 4-8 months from permit to completion. We’re based in Fort Lauderdale and regularly work the 33023 corridor, so our crews know the route up Miramar Parkway and the specific Broward County inspection schedules that keep projects moving. Call (844) 665-0162 for a free estimate - we’ll come to you anywhere in Miramar, from the older CBS neighborhoods near Perry Street to the western subdivisions.
Why Groundwork Construction Co. of South Florida Is Miramar’s Preferred Home Additions & ADU Company
We’ve built a reputation in Miramar by treating every project in the 33023 corridor as the structural hardening exercise it actually is. Homeowners here don’t need vague promises; they need a contractor who knows that pulling a permit on a 1960s CBS home means uncovering galvanized plumbing, missing hurricane straps, and non-compliant garage connections.
Our response time to Miramar is same-day for initial consultations, and our project managers live with the reality of Broward County’s inspection backlog. We schedule around it. We don’t promise what we can’t control.
Raymond Estevez, who leads Groundwork, has directed additions and ADU projects across Broward’s legacy housing stock for years. Our clients in Miramar specifically mention the value of having one point of accountability - one contractor who handles the structural remediation, the brand selection, and the finish work without handing off to subs they’ve never met.
Our Home Additions & ADU Services in Miramar
ADU Design & Permitting
ADU design in Miramar starts with a realistic assessment of what Broward County will require. In the 33023 corridor, we routinely find that original homes lack the roof-to-wall connections and impact-rated openings that current code demands. Our design team factors this in from day one, so your ADU permit doesn’t stall when the inspector flags the main house. We handle the full architectural package, structural engineering, and permit submission - one contractor, every phase.
Garage Conversion ADU
Garage conversions are one of the most common ADU requests we get in Miramar, and they’re also where we find the most hidden issues. On a recent garage conversion to an ADU on a 1960s CBS home near Miramar’s central corridor, our crew discovered a one-piece door with original springs and track that was no longer balanced, and the wall between the garage and living area lacked the required fire separation. We replaced the door with a modern impact-rated sectional unit, reinforced the wall with hurricane straps, and added a compact utility room for the ADU’s plumbing - staying within the homeowner’s budget by prioritizing the code-required upgrades. Built to spec, not to convenience.
New Detached ADU
Detached ADUs in Miramar face a specific challenge: the high water table that rises within inches of grade during the June-October wet season. Slab-on-grade preparation isn’t optional here. We engineer compacted fill depth and stormwater drainage into every foundation plan, because we’ve seen what happens when moisture wicks through an improperly prepared slab. You choose the brand, we handle the build - including the site prep that prevents callbacks.
Junior ADU & Interior Conversion
Junior ADUs work well in Miramar’s larger 1950s-1970s ranch homes, where a dedicated entrance and small kitchenette can carve out independent living space. But even interior conversions trigger Broward County’s current Florida Building Code requirements for hurricane straps and impact-resistant openings. We assess the existing structure before we design, so you’re not surprised by scope additions after permits are pulled.
ADU Site Prep & Utilities
Site prep in Miramar means dealing with flat coastal plain drainage and aging utility connections. Many 33023 homes still have original sewer laterals and electrical panels that can’t handle an ADU load. We coordinate the civil engineering, utility upgrades, and foundation work as a single package - from driveway to roofline, handled by our Home Additions & ADU team.
Room Additions & Second Story Additions
Room additions on Miramar’s single-story CBS homes require careful structural analysis. The original flat or low-slope roofs weren’t designed to carry a second story, and the wall systems often lack the continuous load paths that current code requires. We bring in structural engineers early, identify the remediation scope, and build it into the project timeline. Expand what’s possible - but build it to stand up.
Sunrooms & Enclosed Patios
Sunroom and enclosed patio projects in Miramar frequently involve converting 1980s screen enclosures or carports that were built under - or without - permits that predate current wind-load standards. Broward County requires these structures be brought into compliance before new work is approved. We uncover these issues during our initial assessment, not after permits are pulled.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Miramar
Groundwork works with 50+ recognized industry brands across every category, giving Miramar homeowners genuine choice rather than a single-vendor lock-in. For ADU kitchens and baths, that means cabinetry from KraftMaid and Wellborn, countertops from Cambria, Silestone, and Caesarstone, and fixtures from Kohler and Moen. For roofing tied to additions, we specify GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, or Boral - whatever matches your project’s requirements and your preferences. For windows and doors, we draw from Andersen, Pella, Marvin, Milgard, Jeld-Wen, Simonton, PGT, and CGI, including impact-rated lines that satisfy Broward County’s strict opening protection rules. You choose the brand, we handle the build.
Common Home Additions & ADU Problems We See in Miramar Homes
- Legacy garage doors and non-compliant fire separation. In Miramar’s 33023 corridor, many original 1950s-1970s CBS homes have one-piece or early sectional garage doors with obsolete hardware; when we open a wall for an ADU or room addition, we routinely find non-compliant garage-to-living space connections and door anchoring that Broward County requires be upgraded to hurricane-rated systems before the new addition can be approved.
- High water table and slab moisture. Miramar sits on the flat South Florida coastal plain where the water table can rise to within inches of grade during the June-October wet season, making slab-on-grade preparation, compacted fill depth, and stormwater drainage engineering non-negotiable for any new construction or ground-level addition.
- Missing hurricane straps and non-compliant roof deck fastening. The older northern Miramar corridor in ZIP 33023 is dominated by single-story CBS homes from the 1950s-1970s with flat or low-slope roofs that commonly lack compliant roof deck fastening patterns and hurricane strapping, which must be remediated whenever a roofing or addition permit is pulled.
- Unpermitted 1980s additions triggering code compliance. In the 33023 corridor, screen enclosures, carport conversions, and rear additions were commonly built in the 1980s under permits - or without them - that predate current wind-load standards; contractors regularly uncover these structures when pulling new permits, and Broward County requires they be brought into compliance before new work can be approved, routinely doubling project scope.
Pricing for Home Additions & ADU in Miramar, FL
| Service | Typical Range in Miramar |
|---|---|
| Home Addition | $45,000-$130,000 |
| ADU Construction | $90,000-$220,000 |
| Garage Conversion | $30,000-$80,000 |
These ranges reflect what we see in the Miramar market, where the condition of legacy housing stock often adds structural remediation to the base construction cost. A garage conversion on a 1960s CBS home with a compliant door and proper fire separation will land at the lower end. A detached ADU requiring full utility trenching, drainage engineering, and foundation work in a high water table area will trend higher. We provide itemized estimates before work begins - call (844) 665-0162 to schedule a free assessment.
We Also Serve Cities Near Miramar
Groundwork’s crews work throughout Broward County, including Home Additions & ADU in Miramar and the surrounding communities of Andover, West Park, Hollywood, and West Hollywood. The same building code requirements, legacy housing challenges, and inspection processes apply across this corridor, and we bring the same structural-hardening expertise to every project.
Serving Miramar, FL - Our Local Coverage Area
We’re based in the Miramar area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Home Additions & ADU in Miramar
Yes, Broward County typically requires the garage door be upgraded to a hurricane-rated, impact-resistant system, and the wall between garage and living space must meet current fire-separation standards. On a recent project near Miramar’s central corridor, we replaced a 1960s one-piece door with a modern sectional unit and reinforced the connecting wall with hurricane straps to satisfy inspection. Call (844) 665-0162 for a free assessment of your specific garage - estimates are free.
It makes proper slab preparation and drainage engineering essential, not optional. During the June-October wet season, the water table in Miramar can rise to within inches of grade, and an improperly prepared slab will wick moisture or flood. We engineer compacted fill depth and stormwater management into every ground-level addition in Miramar. Call (844) 665-0162 to discuss your site’s specific drainage needs.
Missing hurricane straps, non-compliant roof deck fastening, aging galvanized or early copper plumbing, and non-compliant garage or carport connections are the issues we uncover most often in the 33023 corridor. These aren’t cosmetic - they’re structural code requirements that must be remediated before new work can be approved. We identify these during our initial structural assessment, not after permits are pulled. Call (844) 665-0162 to schedule that assessment.
Often yes, but the existing structure must be analyzed for continuous load paths and foundation capacity first. Many 1950s-1970s Miramar CBS homes have flat or low-slope roofs and wall systems that weren’t designed for a second story. We bring in structural engineers to assess the existing framing, then build any required remediation into the project scope and timeline. Call (844) 665-0162 to discuss your specific home’s potential.
Yes, and if your carport was built in the 1980s or earlier, Broward County will likely require it be brought into compliance with current wind-load standards as part of that permit. We regularly encounter carport conversions in Miramar that predate modern codes, and we build that compliance work into our initial scope and pricing. Call (844) 665-0162 for a free estimate - we’ll assess what’s actually required before you commit.
Written by Raymond Estevez, Owner at Groundwork Construction Co. of South Florida, serving Miramar and Broward County homeowners since our founding.