Cost of a Full Gut Condo Renovation in Miami: What Sets the Number

Ask five contractors the cost of a full gut condo renovation in Miami and you'll get five numbers that don't agree — usually quoted per square foot, usually before anyone has seen your building's alteration agreement. That spread isn't dishonesty. It's that a condo gut is priced by things that never show up in a per-square-foot figure: what's buried in your slab, what your association allows, how your building moves material, and what finish level you actually mean when you say "everything new." Until those are on paper, nobody is pricing your renovation. They're pricing a renovation.

We're Metro Design-Build. Three generations of this family have built in Miami — Joseph Alter invented the Murphy bed, Herman Alter ran his shop in South Beach, and David Eyal Alter earned his Florida GC license at 19 and holds a broker's license as well. We run 30+ in-house professionals including our own millwork shop, we're a licensed and insured Florida general contractor, and we've gutted units from the Joy Fishman Residence — two condos combined into one 3,000-square-foot home — to the Akoya "Jetsons Condo," the Peninsula and Dow in Aventura, and the Armani in Sunny Isles. Here's how the number actually gets set.

Why is a condo gut priced differently from a house remodel?

Because in a condo, you don't control the envelope, the risers, or the logistics — the building does, and the building charges for all three in time.

In a house, your crew parks in the driveway and the dumpster sits at the curb. In a tower, every sheet of drywall rides a service elevator you reserve in advance, work hours are set by the association, noisy work is restricted to a narrower window still, and debris goes down the same elevator it came up. A gut takes longer in a building that only lets you swing a hammer six hours a day — and duration is money: supervision, general conditions, and carrying costs all scale with the calendar.

Then there's what you inherit. Older Miami condos hide their age in the slab and the walls: cast-iron drain lines, aluminum or undersized wiring, and as-built conditions that match no drawing on file. A full gut is the one moment those systems are exposed and cheap to replace. Any condo renovation contractor in Miami who prices your gut without opening a wall or reviewing the building's mechanical history is guessing — and you'll pay the difference between the guess and the truth as change orders.

What actually drives the cost of a full gut condo renovation in Miami?

In rough order of leverage on the total:

1. Scope of "gut." Taking finishes back to the slab and shell is one number. Moving kitchens and bathrooms — which means rerouting drains, vents, and supply lines through or below a concrete slab you share with a neighbor — is another conversation entirely. Combining units, as we did at the Joy Fishman Residence, adds structural review and a demising-wall scope of its own.
2. Mechanical, electrical, plumbing. New panel, new home-run wiring, new plumbing from the riser in, new air handlers and reworked ductwork in a fixed slab-to-slab height. This is the least visible money and the least worth cutting.
3. Finish level. The widest variable. Stone, plaster, flooring, lighting — and above all millwork. Kitchens, closets, wall paneling, and built-ins are usually the single largest finish line item in a luxury unit. We fabricate ours in-house with our own expert carpentry team, which means that number is controlled in our shop instead of marked up through a subcontractor.
4. Openings and glazing. If your renovation touches exterior windows or doors, they must be impact-rated, Miami-Dade NOA-approved products, often in sizes and finishes the association dictates. In many buildings the association controls window replacement outright — which changes both the scope and the schedule.
5. Building logistics. Elevator reservations, protection of common areas, insurance requirements naming the association, security deposits, and restricted hours. None of this is negotiable and all of it belongs in the bid, not in the surprises.
6. Design and permitting. Drawings, engineering where structure or plumbing moves, municipal permits, and the association's own architectural review — which runs on its own clock, before the city's.

A proposal that prices these six categories line by line is a bid. A per-square-foot number with an allowance for "finishes TBD" is a placeholder for a fight you'll have later.

What does the building itself add to the budget?

More than most first-time condo renovators expect — and almost all of it is process, not material.

Every association has an alteration agreement — read it before you price anything. It sets insurance minimums, working hours, elevator rules, flooring sound-attenuation requirements, plan review fees, deposits against common-area damage, and sometimes which scopes require the building's own engineer to sign off. Waterfront towers in Miami Beach and Sunny Isles tend to run the strictest regimes — and a contractor whose crews follow the rules and whose paperwork is clean gets a shorter schedule from building management. Ours do.

Then the city gets its turn. A full gut pulls building, electrical, plumbing, and mechanical permits, each with inspections. A general contractor in Miami who is in these municipal offices weekly loses fewer weeks there than one who visits occasionally. Ask any bidder what they currently have in permitting and in which jurisdictions; the answer tells you how the middle of your project will go.

Where do condo gut budgets actually blow up?

Three places, all predictable.

Discovery behind the walls. Undocumented conditions — rerouted lines from a previous owner's renovation, corroded cast iron, slab conditions nobody drew. You can't eliminate discovery, but you can price honestly around it: exploratory demolition where it matters, a real contingency, and unit pricing agreed up front so surprises are priced by contract instead of by leverage.

Thin allowances. A low bid with vague finish allowances isn't a lower price; it's a deferred one. When the allowance meets your actual taste — the stone you want, the millwork you want — the gap arrives as mid-project change orders. Make every bidder price the same specified unit, down to hardware, before you compare a single dollar.

The design-to-construction handoff. When a designer draws in isolation and contractors price the finished set, the first cost check lands after the design is done — and over budget. This is the practical argument for design-build: the people pricing the work sit in the room while it's designed, so cost is engineered in from the first sketch. Our process runs feasibility, design, association approval, permitting, and construction as one chain, with our residential renovation team involved from day one.

Vet the company before you trust its number: verify the Florida GC license and insurance, ask what's self-performed versus brokered out, and ask to walk finished units at your finish level in buildings like yours. The high-end remodeling contractors in Miami worth shortlisting will welcome all three questions.

How much does a full gut condo renovation cost in Miami?

There is no honest single number. The scope of the gut, what's found behind the walls, whether wet areas move, the building's logistics, and your finish level each move the total more than square footage does. What you can get is a reliable number for your unit: a line-item budget built during design, from your building's rules and your specifications. Anything quoted before those exist is marketing.

How long does a full gut condo renovation take in Miami?

Longer than the same scope in a house, because the calendar includes association review, city permitting, and building-imposed work hours before a single wall opens. Sequence it in phases — design, board approval, permits, construction — and ask every bidder for their current timelines in your specific building type and municipality, not a generic estimate.

Do I need permits and board approval for a gut renovation?

Yes to both. A full gut pulls building, electrical, plumbing, and mechanical permits with inspections, and virtually every association requires an executed alteration agreement and architectural review before work starts. A contractor who suggests skipping either is transferring the risk to you — it's your unit and your liability when unpermitted work surfaces at resale.

Ready for a real number instead of a per-square-foot guess? Talk to us or call 305-300-7996.