What Does a General Contractor Warranty Cover? A Miami Builder Answers Honestly

A general contractor warranty covers workmanship — the labor the contractor and its subs performed — for a stated period, usually one year. It does not cover the appliances, the roof membrane's twenty-year rating, or the marble you selected; those carry their own manufacturer and installer warranties, which a good GC assigns to you at closeout. Everything beyond that one sentence is where owners get surprised, because the warranty most contractors hand you was written to limit their exposure, not to explain it.

We're Metro Design-Build, a licensed and insured Florida general contractor in Miami, three generations in: Joseph Alter invented the Murphy bed, Herman Alter ran a shop on South Beach, and David Eyal Alter earned his GC license at 19 and holds a broker's license as well. We stand behind the warranty conversation because we've been on the answering end of it for a long time. Here is what the document actually covers, what it doesn't, and what Florida law gives you whether the contract mentions it or not.

What's actually inside a standard contractor warranty?

Three layers, and it pays to keep them separate.

Workmanship. The core promise: the work was performed in a good and workmanlike manner, consistent with the plans and code. If a door sags because it was hung wrong, tile cracks because the substrate wasn't prepared, or a wall reads wavy under raking light, that's workmanship. The customary term is one year from substantial completion. Some builders extend it; almost none shorten it without you noticing, so read the number.

Materials and equipment. The contractor typically warrants that materials were new and installed per manufacturer instructions — and then passes the manufacturer's own warranty through to you. Your HVAC compressor, water heater, windows, and roofing system are covered by their makers for years beyond the GC's workmanship term, provided they were installed correctly and registered. In Miami's High-Velocity Hurricane Zone this matters doubly: impact windows and roofing must be Miami-Dade NOA-approved products, and improper installation can void both the product warranty and the approval it rides on.

Systems and structure. On new construction, some builders offer tiered coverage — longer terms on mechanical, electrical, and plumbing distribution, longest on structural elements. This is common in new home construction and is often backed by a third-party warranty company rather than the builder alone. Ask which it is. A builder-backed warranty is only as good as the builder's balance sheet and intention to still exist.

What does a contractor warranty NOT cover?

More than most owners assume, and this is where disputes start.

Normal wear, settlement cracking within industry tolerance, and maintenance failures are excluded everywhere. Hairline stucco cracks, grout separation at a tub line, nail pops in drywall during the first seasonal cycle — these are typically defined as maintenance items or covered once at the one-year walkthrough, not indefinitely.

Owner-supplied items are excluded. If you purchased the appliances, the light fixtures, or the reclaimed oak yourself, the GC warrants the installation labor only. On luxury projects where owners source heavily, this line item deserves a direct conversation before contract signing — it's one reason we prefer to carry procurement inside our design-build structure, where one contract holds the whole chain.

Damage from anyone else's work is excluded. If your AV integrator drills through a supply line, that's not the GC's warranty claim. So is unauthorized modification: owners who bring in outside trades during the warranty period routinely void coverage on the affected systems. And acts of God are excluded — a warranty is not insurance, and in a hurricane market the difference is not academic.

Finally: aesthetic judgments made after acceptance. If you approved the stone slab layout at the interior renovation walkthrough, the veining is not a defect in March.

What does Florida law give me even if the contract is silent?

Two things worth knowing before you ever read a warranty page.

First, implied warranties. On new residential construction, Florida courts recognize implied warranties of fitness and habitability — the home must be built reasonably fit to live in — regardless of what the written warranty says. These are narrower on renovations than on new homes, and they don't extend far beyond the structure itself, but they exist.

Second, the statute of repose. Florida law gives owners a window of several years after completion to bring claims for latent defects — problems that existed at construction but weren't discoverable at walkthrough. The legislature shortened that window in 2023, so don't rely on numbers from older articles; the practical point is that your rights against a contractor outlast the one-year workmanship term, but not forever, and Florida's Chapter 558 requires a formal pre-suit notice process before you can litigate a construction defect at all. A contractor who receives a 558 notice gets the opportunity to inspect and offer a repair — which, from a well-run firm, is how nearly every legitimate issue should resolve anyway.

None of this substitutes for the simplest protection: verify the license and insurance before you sign. An unlicensed contractor's "warranty" is a handshake with someone the state can't discipline.

How do I judge whether a builder will actually honor the warranty?

The document matters less than the firm behind it. Warranty service is unprofitable work performed after the final check clears — the only builders who do it well are the ones structurally built to.

Look for self-performance. A GC who brokers every trade has to summon a subcontractor to fix a warranty item, and that sub has no open invoice motivating him. We keep 30+ professionals in-house, including our own carpentry and millwork shop — when a cabinet door needs adjustment a year after closeout, the people who built it are on our payroll, not on someone else's schedule.

Look for continuity. A warranty from a three-year-old LLC has a three-year track record behind it. Ask for completed projects old enough that the warranty period has run — work like the Joy Fishman Residence, where two condos became one 3,000-square-foot home, or the Stern Residence — and ask those owners one question: what happened when you called after the job was done?

Look for a closeout process, not just a promise. At the end of a project you should receive the warranty in writing, all manufacturer registrations and NOA documentation, as-builts, and a named person to call. Ours is part of the documented process we publish; any builder working at this level should meet that standard. It applies whether the project is a home in Coral Gables, a condo on Miami Beach, or commercial work, where warranty terms are negotiated harder and matter more.

The honest summary: a contractor warranty covers the labor for about a year, passes the product warranties through to you, and excludes most of what owners assume it includes. The paper is standard. The firm's willingness to show up in month eleven is not — and that's the thing you're actually buying.

How long does a general contractor warranty last?

The customary workmanship warranty is one year from substantial completion. Manufacturer warranties on windows, roofing, HVAC, and appliances run longer and pass through to you. Florida law separately allows latent-defect claims for a limited period of years after completion, independent of the written warranty.

Does a contractor warranty cover appliances and fixtures?

No — appliances and fixtures are covered by their manufacturers. The contractor warrants the installation labor. If the GC supplied the item, it should facilitate the manufacturer claim; if you supplied it, the product warranty is between you and the maker.

What voids a general contractor's warranty?

Most commonly: unauthorized work by outside trades during the warranty period, owner modifications to warranted systems, failure to perform stated maintenance, and damage from events outside the contractor's control. Nonpayment of the contract balance typically suspends warranty obligations as well.

Evaluating builders and want the warranty conversation before the sales pitch? Contact Metro Design-Build or call 305-300-7996.