Black Diamond Construction LLC

What this record tells you

Black Diamond Construction LLC holds Florida licence CRC1335366, a CRC classification which authorises work as a certified/registered building or residential contractor. A "C" prefix means the licence is certified — valid anywhere in Florida.

This licence was first issued in 2025, which makes it one of the newer licences for the trade in this area. Roughly 90% of the 213 active home building & remodeling licences based in the Key West & The Keys area were issued earlier than this one, and the local median sits at 2017. That is 1 year of continuous licensure.

This is the only active home building & remodeling licence registered to an address in Stock Island in the current DBPR extract — worth widening your search to the surrounding Key West & The Keys area when collecting comparison quotes.

The licence is recorded as expiring on 08/31/2028. Florida licences renew on a fixed cycle, and a licence that is not renewed moves to delinquent status — which is why the expiry date matters if you are planning work close to that date. Confirm the current status on the state portal before signing a contract.

Before you hire Black Diamond Construction LLC

• Re-check licence CRC1335366 on the DBPR portal — status can change any day.
• Ask for a current certificate of liability insurance and workers' compensation, issued to you directly by their insurer.
• Confirm the name on your contract matches Black Diamond Construction LLC or its qualifying agent, David Nathaniel Brennan.
• Compare at least three written quotes from other home building & remodeling contractors in Key West & The Keys.
• Confirm in writing that the contractor — not you — pulls the building permit.