OGC designs and builds large-scale additions and luxury renovations for South Florida families who love where they live — but need their home to work for the life they’re actually living.
A large addition or luxury renovation is not a casual project. It starts because something in your family’s life has changed — or is about to. These are the families we work with.
Your family has added members — a new baby, aging parents, a returning adult child — and the house you bought five or ten years ago no longer holds the life you are living. You need a real master suite, additional bedrooms, expanded living space, and a layout that actually works for the family you have now.
You love the neighborhood. You love the schools. Moving means giving up everything you have built. You need a builder who can transform your home without uprooting your family.
Your children are grown. Grandchildren are arriving. You have lived in this home for 20 years and you are not leaving. But the house was built for a different chapter — no proper home office, no guest suite for visiting family, an outdated layout that no longer reflects how you live.
You are ready for the final renovation — the one that sets this home up for the next 20 years. You need a builder who understands that this project is about legacy, not square footage.
You purchased the home knowing it needed work. Maybe you got it at a significant discount. Maybe it has been in the family for years. The bones are strong — but everything else needs to change. Full renovation, major addition, new systems, new layout, new life.
This is the most complex project type we do. It requires a team that can engineer structural solutions, coordinate every trade, and deliver a finished home that bears no resemblance to what was there before.
Every OGC project is designed and built as one continuous engagement — from the first concept sketch to the final walk-through. This is design-build. One team, one contract, one standard of care.
Here is what we deliver:
Large additions are not just about adding square footage. They are structural events. A second story means your foundation must carry loads it was never designed for. A room expansion means existing load paths must be rerouted. A slab penetration for an elevator means cutting through the structural heart of your home without compromising anything above or below.
This is where most contractors reach the edge of their capability. They call a structural engineer and hope the answer is simple. If it isn’t, they either quote a number so high you walk away, or they walk away first.
Ozzy Graveran studied Building Construction for over nine years in Cuba, specializing in structural design as a builder. He served as Chief Field Engineer on Marlins Stadium, Downtown Dadeland, and major Brickell high-rise developments. He has spent 35 years applying that knowledge in the field — not in theory, but with his hands on the project.
On every OGC project, Ozzy personally reviews every structural decision. When the plans call for something that requires field-level structural judgment — hidden steel columns inside existing walls, new piles connected to grade beams, slab cuts that maintain load integrity — Ozzy does not delegate it. He is there.
OGC added a full second and third story to an existing waterfront home. The project required cutting through a 10-inch structural slab, driving new piles connected to existing grade beams, and concealing steel columns inside the original walls — all while the client continued living in and hosting guests at the home.
Contract value: $1.2M. Result: a three-story family legacy estate overlooking the Rio Barcelona Canal.
See the Full ProjectDan Selle owns a $50M+ company. He is the father of five, grandfather of nine. His 6,000 sq ft waterfront home on the Rio Barcelona Canal had only three bedrooms — not enough to hold the family gatherings that define his life. OGC built a second and third story addition with three new bedrooms, an elevator, and an active rooftop with a summer kitchen and fireplace overlooking the canal. The structural complexity — slab penetration, new piles, hidden steel columns — is what makes this project a benchmark.
Juan bought a single man’s home. Then he got married. Then his wife got pregnant. The house that worked for one could not work for three. OGC built a 1,000 sq ft addition with a master suite, walk-in closet, expanded living area, rear gallery with summer kitchen, his office, her office, nursery, and architecturally significant front entry — plus full landscaping. Juan constantly tells us he is living the life he wanted, because of this project.
Steve and Nina had one child for thirteen years. Then, unexpectedly, a second baby arrived. Their home — no real master suite, cramped living room — barely worked for three. It could not work for four. OGC built a master suite with walk-in closet and full bath, expanded the living room, added a dedicated bedroom for their teenager, a nursery for the new baby, a home office, and completed a full flooring renovation throughout.
Clara and David’s children had grown and moved to different states. Their home had an awkward layout, no proper home office, and no space for family visits. They wanted to redesign their home for the next chapter — not move. OGC built a 1,400 sq ft addition with a home office, guest bedrooms for grandchildren, improved laundry, a kitchen renovation, removed an awkward interior wall to open the floor plan, and installed new flooring throughout.
Every OGC large addition or luxury renovation starts with a Concept Design — a complete visual and financial picture of your project before a permit is filed or a contractor is scheduled.
You see floor plans. Elevations. 3D renderings of your home as it will look when finished. A preliminary budget based on real numbers, not guesses. Every major decision is made from a position of confidence — not hope.
Every large addition and luxury renovation is unique. Scope, structural complexity, site conditions, and finishes all determine the final investment. OGC does not publish fixed pricing because no two homes and no two families are the same.
What we can tell you is the range our projects typically fall within:
These ranges reflect total project investment including design, permitting, and construction. OGC locks your budget during pre-construction — the number we give you is the number we build to.
If your vision is larger than these ranges, we build that too. If your project is below $250,000, we may not be the right firm — and we will tell you honestly and recommend someone who is.
Every large addition and luxury renovation is unique. Scope, structural complexity, site conditions, and finishes all determine the final investment. OGC does not publish fixed pricing because no two homes and no two families are the same.
What we can tell you is the range our projects typically fall within:
These ranges reflect total project investment including design, permitting, and construction. OGC locks your budget during pre-construction — the number we give you is the number we build to.
If your vision is larger than these ranges, we build that too. If your project is below $250,000, we may not be the right firm — and we will tell you honestly and recommend someone who is.
The first step is a Concept Design Consultation with Ozzy and Miguel.
We will visit your home, understand your vision, and show you what is possible — before you commit to a single dollar of construction.
If we are the right fit for your project, we will tell you. If we are not, we will tell you that too, and point you in the right direction.
We take a select number of large addition projects each year. If you are ready, we want to hear from you.
Or call Miguel directly: (305) 968-1739
Building a luxury home in South Florida is complex. We've condensed 15+ years of engineering secrets into one essential checklist.
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