Plain-English definitions of the codes, programs, and terms that come up most often in South Florida construction and roofing projects.
General educational information, current as of 2026 — not legal or insurance advice. Rules, forms, and programs change; confirm current requirements with your local building department, the Florida Office of Insurance Regulation, or a licensed attorney before relying on these definitions for a specific project.
A designation under the Florida Building Code applying only to Miami-Dade and Broward counties, requiring stricter wind-resistance design and product-approval standards than the rest of the state. Design wind speeds are 175 mph in Miami-Dade and 170 mph in Broward for most residential construction. Any roofing, window, door, or shutter product installed in the HVHZ must carry a valid product approval (see NOA, below).
A Miami-Dade County product-approval certification confirming a specific building product (roofing material, window, door, shutter) has passed HVHZ testing standards. In Broward County, either a Broward NOA or an accepted Miami-Dade NOA satisfies the requirement. An NOA approves the product itself — the installation still has to pass its own inspection separately as part of your building permit.
The product-approval system that applies outside the HVHZ (Miami-Dade and Broward) — covering Palm Beach County and the rest of coastal Florida. It uses the statewide Florida Product Approval system rather than county-issued NOAs, and is generally less stringent than HVHZ requirements, though impact-resistant or protected openings are still typically required in wind-borne debris areas.
A mandatory homeowners-insurance premium discount (Fla. Stat. §627.0629) for verified storm-resistant features — hip roof, impact-rated windows/doors, reinforced roof-to-wall connections, a sealed roof deck, and similar — documented on the state-standard OIR-B1-1802 form by a qualified inspector. The discount amount is set by your specific insurance carrier and varies by policy; industry sources commonly describe combined-feature savings in the 20-45% range. The inspection is valid for up to 5 years absent structural changes.
A statewide structural-safety inspection requirement (Fla. Stat. §553.899, enacted after the 2021 Surfside collapse) for condo and co-op buildings 3+ habitable stories, due by December 31 of the year the building turns 30 years old (from its original certificate of occupancy), and every 10 years after. Local governments have discretion to require an earlier 25-year inspection for buildings within a set distance of the coast — Miami-Dade applies this discretion; check with your county for the exact local threshold.
The older, legacy building-safety recertification track used by Miami-Dade (since 1975) and Broward (since 2006) predates the statewide Milestone Inspection law above. Since a 2022 amendment, both counties run a hybrid schedule that aligns newer buildings with the state’s 30-year/25-year-coastal timeline, while older buildings continue on the legacy 40-year-then-every-10-year track. “40-year/50-year” alone no longer fully describes either county’s current program — check with Miami-Dade or Broward’s building department for which schedule applies to a specific building.
A document filed with the county that formally records a construction project has begun, protecting the property owner’s interests under Florida’s construction lien law. Florida law (Fla. Stat. §713.135(1)(e)) requires a filed NOC once a direct contract exceeds $5,000, statewide — with a separate exemption for HVAC repair or replacement contracts under $15,000. This is a state-level threshold, not set individually by county.
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