If you live in Miami-Dade or Broward County, you've heard the term 'NOA' or 'Miami-Dade approved' from every shutter contractor. But what does it actually mean, why does it matter, and how do you verify that a product truly has it? Here's the complete explanation.
What Is a Miami-Dade NOA?
A Notice of Acceptance (NOA) is a product approval issued by Miami-Dade County's Building Code Compliance Office (BCCO) certifying that a hurricane protection product has passed the most rigorous testing standards for storm resistance in the United States.
The NOA system was created in response to the catastrophic failures revealed by Hurricane Andrew in 1992. Before Andrew, building codes existed but products were not systematically tested to verify they actually performed as rated. Andrew exposed thousands of products that failed at wind speeds well below their stated ratings.
Miami-Dade responded by creating an independent third-party testing and approval system. Today, the Miami-Dade NOA is recognized as the gold standard for hurricane protection product approval — not just in Florida, but internationally.
The High-Velocity Hurricane Zone (HVHZ)
Miami-Dade and Broward Counties are designated as the High-Velocity Hurricane Zone (HVHZ) under the Florida Building Code. This designation reflects the counties' extreme exposure to direct hurricane impacts and the density of the built environment they contain.
In the HVHZ, every hurricane protection product — shutters, impact windows, impact doors, garage doors — must carry a valid Miami-Dade NOA before it can be legally installed. Standard Florida Product Approval (FL number) is not sufficient in the HVHZ. A contractor who installs a non-NOA product in the HVHZ is installing a non-compliant product that will fail inspection.
What NOA Testing Requires
To receive an NOA, a product must pass all of these tests conducted by an approved independent testing laboratory:
| Test | What It Tests | Standard |
|---|---|---|
| Large missile impact | 9-lb 2x4 lumber fired at 50 fps | No penetration through the specimen |
| Cyclic wind pressure | Repeated positive and negative pressure cycles simulating sustained hurricane winds | No failure through 9,000 pressure cycles |
| Water infiltration | Water spray at 8 psf pressure for 15 minutes | No uncontrolled water intrusion |
| Air infiltration | Air leakage measurement | Must meet specified leakage limits |
| Structural load | Uniform wind load at design pressure | No failure at 1.5x design pressure |
This testing is significantly more demanding than the standard Florida Product Approval process. Many products hold FL approval but not NOA approval — they are code-compliant outside the HVHZ but not within it.
How to Look Up an NOA
Every valid NOA is in the Miami-Dade Building Code Compliance Office public database. To verify any product:
- Go to miamidade.gov/building/pc-product_control.asp
- Click "Search for Approved Products"
- Enter the NOA number (format: XX-XXXX.XX) or search by product category and manufacturer
- Verify the NOA status is Active — expired NOAs cannot be used for new installations
- Verify the product specifications match what your contractor is proposing to install — size, configuration, and installation requirements must all fall within the approved parameters
Ask your contractor for the specific NOA number before signing any contract. Look it up yourself. An NOA number that doesn't appear in the database, or one that is expired, means the product is not compliant for installation in the HVHZ.
Understanding the NOA Format
An NOA number looks like this: 21-0412.03
- 21 — year of original approval (2021)
- 0412 — sequential approval number for that year
- .03 — revision number (this is the 3rd revision of the original approval)
When contractors reference an NOA, verify you're looking at the current revision. Earlier revisions may have been superseded by updates that changed the approved sizes, configurations, or installation requirements.
Does NOA Matter Outside Miami-Dade and Broward?
NOA approval is legally required only in the HVHZ. However, many homeowners and contractors outside the HVHZ specifically seek NOA-approved products because:
- NOA-approved products have passed more rigorous testing than FL-only approved products
- Some insurers give additional credit for NOA-approved protection even outside the HVHZ
- For high-value properties in high-wind zones outside the HVHZ, the additional testing assurance is worth the slight premium in cost
Outside the HVHZ, standard Florida Product Approval is legally sufficient. But if a contractor offers an NOA-approved product at comparable pricing, it's a better-tested product.
Frequently Asked Questions
My contractor says the product has NOA. How do I verify?
Ask for the specific NOA number — not just a claim that it's approved. Look it up yourself at miamidade.gov/building/pc-product_control.asp. Verify that the NOA is active (not expired), that the product manufacturer and description match what you're being sold, and that the approved size parameters include your specific opening dimensions.
What's the difference between NOA and Florida Product Approval?
Florida Product Approval (FL number) is issued by the Florida Building Commission and is required statewide for all hurricane protection products. Miami-Dade NOA is issued by Miami-Dade County and is required additionally for products installed in the High-Velocity Hurricane Zone (HVHZ) covering Miami-Dade and Broward Counties. NOA testing requirements are significantly more rigorous than FL approval requirements.
My contractor is proposing a product with FL approval but no NOA. Can they install it in Miami-Dade?
No. In Miami-Dade and Broward Counties, FL approval alone is not sufficient. Any shutter, impact window, or impact door installation in the HVHZ must carry a valid, active Miami-Dade NOA. A contractor proposing to install a non-NOA product in the HVHZ is proposing a non-compliant installation that will fail the building inspection.