1 A Backflow and Services, LLC

Active license

Certified/Registered Plumbing Contractor · Key Biscayne, FL

License numberCFC1429608
License typeCFC — Certified/Registered Plumbing Contractor
License holderLawrence Christopher Lanza
Location104 Crandon Boulevard, Key Biscayne, FL 33149
Licensed since2016
License expires08/31/2028
Status in DBPR recordsCurrent, Active (as of 2026-08-11)

Verify license CFC1429608 on the official Florida DBPR site ↗

What this record tells you

1 A Backflow and Services, LLC holds Florida licence CFC1429608, a CFC classification which authorises work as a certified/registered plumbing contractor. A "C" prefix means the licence is certified — valid anywhere in Florida.

This licence was first issued in 2016, which makes it an established licence for the trade in this area. Roughly 32% of the 1,098 active plumbing licences based in the Miami area were issued earlier than this one, and the local median sits at 2022. That is 10 years of continuous licensure.

1 A Backflow and Services, LLC is one of 5 active plumbing licences registered to an address in Key Biscayne, so you have local alternatives to compare quotes against. Lawrence Christopher Lanza additionally holds 1 other active Florida licence in our records, which can indicate a contractor qualified across more than one trade or entity.

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 1 A Backflow and Services, LLC

  • Re-check licence CFC1429608 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 1 A Backflow and Services, LLC or its qualifying agent, Lawrence Christopher Lanza.
  • Compare at least three written quotes from other plumbing contractors in Miami.
  • Confirm in writing that the contractor — not you — pulls the building permit.

This page is generated from Florida DBPR public license records and is shown for consumer-protection purposes. 1 A Backflow and Services, LLC has not claimed this page, is not a sponsor, and no endorsement is implied. Figures comparing this licence to others are calculated from the same public dataset, last refreshed 2026-08-11. Always re-verify license status and insurance directly before hiring.

Other licensed plumbing contractors near Key Biscayne

See all plumbing contractors in Miami →

1 A Backflow and Services, LLC is #348 of 1,098 plumbing contractors in Miami by length of licensure — that places this record on page 6 of the Miami list.

Other licences under the name Lawrence Christopher Lanza

Florida records these licences under the same qualifying agent name. A single qualifying agent can hold licences across several trades or entities, so this is a name match in the public register — not proof that the same person or business is behind each one.