JLB MECHANICAL, LLC

Permits are pulled before work begins and then inspected by the county. A contractor who files them is working inside a system with an inspector in it, which is what unpermitted work avoids.

What the permits show

Of the permits we observed, 93% are HVAC work.

HVAC 26

Accessory Structure 1

Deck & Patio 1

Recent work

• Heat pump install
  June 2026 · Howard County

  Install Goodman heat pump and ductwork / ENERGY METHOD = Prescriptive Method

• Fire damage repair
  December 2025 · Howard County

  Due to fire replacement of duct system / heating/ cooling equipment

• HVAC install
  November 2025 · Howard County

  Install Duct System

• HVAC replacement
  November 2025 · Howard County

  This was a fire damage house all equipment to be replaced along with ductwork

• HVAC work
  October 2025 · Howard County

  adding 2 supply outlets and 1 return inlet

• HVAC addition
  January 2025 · Howard County

  SINGLE FAMILY DWELLING / INSTALL DUCTLESS MINI SPLIT IN ADDITION / ENERGY METHOD = Prescriptive Method

• Sunroom addition
  August 2024 · Howard County

  SINGLE FAMILY DWELLING / INSTALL DUCTLESS MINI SPLIT IN SUNROOM / ENERGY METHOD = Prescriptive Method

• Furnace install
  June 2024 · Howard County

  SINGLE FAMILY DWELLING / EXTEND EXISTING FURNACE PVC FLUE INSTALL TWO (2) 10" EXAUST HOODS 1-INTERIOR EXTENSION 1-EXTER…

• Accessory structure install
  September 2023 · Howard County

  SINGLE FAMILY DWELLING / INSTALL DUCTLESS MINI SPLIT IN AREA OVER GARAGE / ENERGY METHOD = Prescriptive Method

Licensing

• Maryland HVACR Contractor Issued by Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration. Verify

Towns we observed them working in

We hold permit records for Anne Arundel County, Baltimore City, Baltimore County, Carroll County, Frederick County, Howard County, Prince George's County, and Washington DC. Work anywhere else is not missing from this contractor's record, it is outside what we cover.

Permits by year

Our records for this contractor's counties begin August 2021. Years before that are not shown because we hold nothing for them, not because nothing happened.

What this page is, and is not

• Howard County: 28 permits observed, from records beginning August 2021.

This page shows permits we observed in county records. Our observation is not complete: work done before those dates, in counties we do not cover, or on filings that name no contractor does not appear here. A contractor's real work is almost always greater than what we observed, and absence of a permit on this page does not mean the work was not done or not permitted. We currently hold records for Anne Arundel County, Baltimore City, Baltimore County, Carroll County, Frederick County, Howard County, Prince George's County, and Washington DC; see permit coverage for what that includes.

Common questions

Does a permit record mean this contractor is licensed?

County permit records list JLB MECHANICAL, LLC under Maryland HVACR Contractor. Check current standing with the issuing body before hiring.

Why do some contractors show more permits than others?

Counties began publishing at different times and describe contractors differently, so the number reflects what we observed as much as what the contractor did. It is not a ranking.

What should I still ask for?

Proof of insurance, a written contract, and the license number for the trade being performed. A permit record is a starting point, not a substitute for either.

Other HVAC contractors in Howard County