LEN THE PLUMBER

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, 53% are HVAC work.

HVAC 359

Plumbing 320

Gas 2

Pool & Spa 1

Typical job observed: 40,000 BTU.

Each county's permit system holds only their own records, so the combined view above exists nowhere else.

Recent work

• HVAC work
  September 2026 · Anne Arundel County
• Plumbing replacement
  September 2026 · Anne Arundel County

  emer water service replacement approx 45ft with 3/4" black poly with blue tracer and sleeved copper through foundation.

• HVAC replacement
  September 2026 · Anne Arundel County

  Replacement of existing AC coil with New Trane AC coil 5TXCB003AS3HCAA indoor unit same location Replacement of existin…

• Heat pump install
  September 2026 · Anne Arundel County

  Replacement of existing Heat Pump with New Trane Heat Pump 5HCL5060B1000A indoor & outdoor unit same location

• Basement bathroom install
  September 2026 · Anne Arundel County

  Rough in Basement Bathroom

• Emergency repair
  September 2026 · Anne Arundel County

  Emergency water service replacement approx 48-55 ft black poly with blue tracer

• Plumbing install
  August 2026 · Anne Arundel County

  REPLACE up to approximately 50 ft. in length, 7-9 ft. in depth of existing sewer line with sch. 40 PVC from house conne…

• Furnace replacement
  August 2026 · Howard County

  Replacement of exisiting gas furnace with new gas trane furnace s9b1c080 outside unit same location

• Gas replacement 199,000 BTU
  August 2026 · Anne Arundel County

  replacement of tankless GWH with tankless GWh - 199,000 BTU Tankless and 300,000 btu meter

• Plumbing repair
  August 2026 · Anne Arundel County

  REPAIR up to approximately 10ft. in length 11 ft. in depth of existing outside sewer line with sch. 40 PVC. Provide 1 c…

Licensing

• Master Plumber and Gas Fitter Issued by Maryland Board of Plumbing. Verify
• 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: 466 permits observed, from records beginning August 2021.
• Anne Arundel County: 214 permits observed, from records beginning December 2025.
• Frederick County: 2 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 LEN THE PLUMBER under Master Plumber and Gas Fitter, 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