New construction · Key Biscayne

New construction roofing in Key Biscayne, FL

Only 4.8 percent of homes on Key Biscayne were built in 2010 or later, so most roofing work on the island involves older roofs being replaced or repaired. The new-build share is small, but the rules for it still matter. If you are building or rebuilding here, the code edition, the deck and underlayment rules, and the inspection order will shape your schedule.

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Updated October 2026

Twisted tree on a beach leaning over calm water at dusk with distant buildings on the horizon. — Photo: Key Biscayne Miami Florida Travel Photography by Giuseppe Milo, CC BY 3.0, cropped

A roof deck sheathed in red-brown ZIP System panels with black seam tape, a bucket and a ladder on the deck, homes and a street behind. — Photo: Key Biscayne Miami Florida Travel Photography by Giuseppe Milo, CC BY 3.0, cropped

Key Biscayne figures this page uses

Housing units (ACS 5-year): 7,310
Median year homes were built: 1977
Share of homes built 2010 or later: 4.8%

New builds

What new construction roofing means on Key Biscayne

The village has 7,310 housing units, and its median home was built in 1977. A new roof on a new house is a small share of the work here. Most of the island's roofing is replacement on older homes. Even so, a new build must meet current code from the start.

A Key Biscayne application filed in 2027 or later goes through the Ninth Edition review, and anything filed earlier stays under the current code. Because the island's permits are handled by the village rather than the county, the submission date you choose matters for your roofing schedule. Ask the village building office which edition your file will be reviewed under.

Inspections

Deck, underlayment and inspection order

Roof sheathing must be fastened with ring shank nails, and one of three dry-in options must be used for shingle, metal and similar roofs. The simplest route is a full deck of self-adhering polymer-modified bitumen underlayment. Other routes use strips over joints or two layers of approved felt.

Once the roof is on, the inspector checks framing and bracing, confirming every member is in place.
Sheathing or dry-in inspection once roof and wall sheathing and fasteners are complete
The inspector reviews dry-in status, insulation, the roof covering and flashing before approving the work.
Final inspection after the roof is complete

Approvals

Product approval and who may install

Roofing is a statewide product approval category, and Miami-Dade's Product Control Section approves or denies roofing products used in the county. Miami-Dade applicants list the product approval or Notice of Acceptance numbers right on the roofing permit form. Check the number against the approved product before installation.

Work on tile, metal or membrane roofs has to be performed by a roofing contractor who holds certification or registration. A general contractor may install asphalt shingles only on a new building of its own construction, and may not advertise as a roofer without that certification.

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Questions

New construction roofing in Key Biscayne: questions

Which building code edition applies to a new roof on Key Biscayne?

Permits submitted before December 31, 2026 fall under the current Florida Building Code, and permits submitted on or after that date must follow the Ninth Edition. Key Biscayne sits in Miami-Dade County, which is part of the High-Velocity Hurricane Zone, so its rules are stricter than the statewide baseline. Confirm your submission date and edition with the Village of Key Biscayne building office before you file.

Source: Miami-Dade County RER notice, read Oct 5, 2026

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What does the Key Biscayne building office require for a roof permit?

Permits for building, zoning and planning work in Key Biscayne are issued by the Village. Roofing permits need product approval numbers and proof of who may perform the work. Your roofing contractor should provide the approval numbers before the permit is filed. Confirm current forms directly with the village building office.

Source: Village of Key Biscayne - Building, Zoning and Planning - Permitting, read Oct 5, 2026

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How much of the Key Biscayne housing stock is new enough that a new roof is rare?

Only 4.8 percent of homes on Key Biscayne were built in 2010 or later, while the median home was built in 1977. That means most roofing work on the island is replacement on older roofs. New construction is a small share of the total. Using the village's 7,310 housing units, the share of homes built 2010 or later is small compared with the older stock.

Source: U.S. Census Bureau, American Community Survey 2024 5-year estimates (2020-2024), table B25035, via Census Reporter API, read Oct 5, 2026

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Is a builder responsible for roof defects on a new Key Biscayne home?

Florida law requires a builder to warrant a newly constructed home for one year against defects in equipment, material or workmanship that result in a material violation of the Florida Building Code. Coverage runs one year from whichever comes first: original conveyance or initial occupancy. Ordinary wear, settling, defects the owner caused and natural disasters fall outside what this covers. Many Key Biscayne homes are older, with a median build year of 1977 in the village, so a roof on an existing home usually falls under the owner's own maintenance responsibility rather than a builder's warranty. Ask your insurer or an attorney how this applies to your situation.

Source: Florida Statutes, section 553.837 (2026), read Oct 5, 2026

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