Don Koski Plumbing Contractor Inc

Active license

Certified/Registered Air Conditioning or Mechanical Contractor · Hallandale, FL

License numberCMC056777
License typeCMC — Certified/Registered Air Conditioning or Mechanical Contractor
License holderDonald F Koski
LocationPO Box 3621, Hallandale, FL 33008
Licensed since1995
License expires08/31/2028
Status in DBPR recordsCurrent, Active (as of 2026-08-11)

Verify license CMC056777 on the official Florida DBPR site ↗

What this record tells you

Don Koski Plumbing Contractor Inc holds Florida licence CMC056777, a CMC classification which authorises work as a certified/registered air conditioning or mechanical contractor. A "C" prefix means the licence is certified — valid anywhere in Florida.

This licence was first issued in 1995, which makes it one of the longest-held licences for the trade in this area. Roughly 9% of the 1,128 active hvac & ac repair licences based in the Fort Lauderdale area were issued earlier than this one, and the local median sits at 2018. That is 31 years of continuous licensure.

Don Koski Plumbing Contractor Inc is one of 3 active hvac & ac repair licences registered to an address in Hallandale, so you have local alternatives to compare quotes against. Donald F Koski 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 Don Koski Plumbing Contractor Inc

  • Re-check licence CMC056777 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 Don Koski Plumbing Contractor Inc or its qualifying agent, Donald F Koski.
  • Compare at least three written quotes from other hvac & ac repair contractors in Fort Lauderdale.
  • 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. Don Koski Plumbing Contractor Inc 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 hvac & air conditioning contractors near Hallandale

Hallandale, FL 33009

CAC1824674 · licensed since 2026

Coconut Creek, FL 33073

CAC057014 · licensed since 1995

See all hvac & air conditioning contractors in Fort Lauderdale →

Don Koski Plumbing Contractor Inc is #111 of 1,128 hvac & air conditioning contractors in Fort Lauderdale by length of licensure — that places this record on page 2 of the Fort Lauderdale list.

Other licences under the name Donald F Koski

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.