Home Additions · Miami-Dade · Broward · Since 2016
Room additions, second-story additions, accessory dwelling units, in-law suites, and garage & carport conversions across Miami-Dade and Broward. The zoning, setbacks, and permitting that make or break an addition — handled by a licensed general contractor, not left to you.
What JMK builds
When moving isn't the answer, the right addition adds space, function, and value to the home you already own. JMK Contractor builds additions with the same engineering discipline as our ground-up new construction — because tying new structure into an existing home is where most additions go wrong.
Primary-suite additions, extended living areas, home offices, and full second-story additions. We handle the structural engineering to tie new framing, foundations, and rooflines into your existing home cleanly — matching materials so the addition reads as original.
Accessory dwelling units, detached guest houses, and attached in-law suites — for multigenerational living or rental income. We navigate Miami-Dade lot-coverage, setback, and FAR limits so your ADU is approvable before you commit to design.
Convert an underused garage into a bedroom, studio, gym, or income unit. Insulation, egress, HVAC, impact windows, and code-compliant electrical — done to permit, so the converted square footage counts and holds up at resale.
Enclose a carport or patio into conditioned living space, or add a new garage. We handle the HVHZ impact requirements, tie-ins, and Miami-Dade permitting that turn open structures into permitted, insurable square footage.
Why JMK for additions
The hardest part of an addition isn't the building — it's the zoning, the existing conditions, and the connection between old and new. We built our process to de-risk exactly those things.
Before you spend on design, we confirm what your lot actually allows — setbacks, lot coverage, floor-area ratio (FAR), height, and ADU eligibility under Miami-Dade code. No drawings for an addition that can't be permitted.
We scan your existing home with a 3D LiDAR imaging camera so new structure meets old with millimeter accuracy. Rooflines, floor heights, and utility runs are captured as real data — the connection points that usually cause change orders.
Your proposal includes structural calculations, MEP coordination, and a real construction sequence — a fixed price, not a per-square-foot ballpark. Change orders on JMK projects run a fraction of the industry average.
We manage the full Miami-Dade permit process — building, zoning, MEP, structural — and run every project through Buildertrend with live job-site cameras, so you see the schedule, budget, and progress your team sees.
The process
We meet at your home, understand the space you need, and confirm what your lot allows — setbacks, lot coverage, FAR, and ADU eligibility. Free, and it tells you upfront whether your plan is approvable.
We scan the existing home and work with your architect — or one from our network — on plans that fit your budget and tie into the structure cleanly. Structural and MEP engineering come from real measurements, not assumptions.
You get a detailed scope, material take-offs, a real schedule, and a fixed price — including how we'll match your existing finishes and roofline so the addition looks original.
We handle Miami-Dade building, zoning, MEP, and any HOA approvals, then protect the occupied areas of your home before work begins — so you can keep living there through most additions.
Foundation, framing, roof tie-in, impact windows, MEP, drywall, and finishes — sequenced to minimize the time your home is opened up. Live cameras and daily Buildertrend updates the whole way.
Structured punch list, final inspections through approval, and a one-year warranty handoff — with the new space fully permitted so it counts as legal, insurable square footage.
Related services
When an addition is part of a larger renovation, our full-gut remodel process touches every system at once — often more cost-effective than phasing.
If your lot supports it, a ground-up build or teardown-rebuild can deliver more than an addition. We'll help you compare the two honestly.
Building new elsewhere? We coordinate architects, engineering, and construction under one accountable contract.
Common questions
Tell us about the space you need. We'll respond within one business day and schedule your free consultation and zoning check.
