
Home Additions · Coral Gables, FL
More house, same Gables character.
Rear extensions, second stories, and garage conversions in Coral Gables — engineered, Board of Architects approved, permitted through Development Services, and built under the daily supervision of a licensed general contractor.
Home Additions in Coral Gables
Additions that look like they were always there.
Coral Gables lots tend to be generous, and the smart money here builds on them rather than moving. The classic projects: a rear family room and primary suite behind a Mediterranean in the Country Club Section, a second story over a postwar ranch north of Bird Road, an in-law suite for a multigenerational household in Hammock Oaks. Estate owners in Old Cutler Bay and Journey's End add wings, not rooms. The common thread is that a home addition has to read as original, because this is not a city that forgives a bolted-on box.
Additions are precisely what the Coral Gables Board of Architects exists to review. Massing, rooflines, materials, and how the new volume sits beside the old one are all evaluated against the city's design standards before Development Services opens the building permit. Expect structural engineering for foundations and tie-beams, Miami-Dade approved products for new openings, and the city's tree protections if a specimen oak stands where your footprint wants to go. On waterfront streets in Gables by the Sea or Cocoplum, FEMA substantial-improvement rules can also shape how much you invest in the existing structure. We map all of it before you commit to drawings.
PGX has spent more than two decades building in South Florida, and additions are where that experience shows: tying new foundations to old ones, matching stucco textures and barrel tile so the seam disappears, and keeping the occupied half of the house livable while the new half goes up. The scope is fixed in writing before we start, a supervisor runs the site daily, and one accountable team carries the project from the first sketch through final inspection and warranty.

Where we work in Coral Gables
Elsewhere in Coral Gables? Call us — if it's in Miami-Dade or Broward, we probably build there.
What's included
Ways Gables homes grow.
Every addition starts with engineering and a clear picture of the design review it will face. These are the five we build most.
Rear wings and family rooms
Family rooms, dens, and primary suites extended into the yard, with foundations, tie-beams, and roof tie-ins engineered and permitted as one package.
Second floors, engineered first
Structural evaluation of the existing masonry and footings first, then a full upper floor designed to satisfy both the engineer and the Board of Architects.
Garages and loggias, made livable
Turning underused covered space into conditioned rooms with insulation, impact openings, and mechanical extensions done legally, so the square footage counts when you sell.
Suites for multigenerational households
Independent suites with baths and kitchenettes for long-stay family, built to code and scaled to the architecture rather than stapled onto it.
Footings, steel, and tie-beams
Underpinning, new footings, steel, and tie-beam upgrades: the invisible half of an addition budget, and the half that determines whether it lasts.

How we work
A remodel is a promise. We keep it in writing.
AFixed scope, honest pricing
A detailed written scope before we start — so the number you sign is the number you pay, and changes are decisions, not surprises.
BA superintendent on site, daily
Your project is run by someone whose name you know, who answers the phone, and who walks the site every working day.
CBuilt to code, warrantied in writing
HVHZ-rated products, inspected phases, closed permits, and a written warranty when we hand back the keys.
How it goes
From first walk to final walk-through.
Walk-through & estimate
We visit, measure, listen, and come back with a real scope and a real number — not a teaser.
1–2 weeksDesign & permits
Drawings, engineering where needed, product approvals, and the permit package — filed and tracked by us.
4–10 weeksConstruction
Scheduled trades, daily supervision, weekly updates with photos, and inspections we prepare for and attend in person.
Per scopeCloseout & warranty
Punch list cleared, permits closed, documents handed over, warranty in writing. Then we leave it spotless.
1–2 weeksFAQ
Straight answers.
Does every Coral Gables addition go through the Board of Architects?
How long does a home addition take from idea to move-in?
Do FEMA flood rules limit what I can build on a waterfront lot?
Can my 1920s house structurally support a second story?
Is adding on smarter than buying a bigger house in the Gables?
Contact
Let's size up the addition
Show us the lot and the idea. We will talk feasibility, design review, and honest numbers, in English o en español.