MARK L MCLAUGHLIN

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, 84% are plumbing work.

Plumbing 72

Site 14

Typical job observed: 26 kW.

Recent work

• Generator install
  August 2026 · Frederick County

  Install (2) 420lb/120-gallon propane tanks and apx 10' gas line to existing generator (Installed by another contractor).

• Generator install 28 kW
  June 2026 · Frederick County

  Install 28Kw whole house generator. Install (2) 420lb/120 gallon above ground propane tanks.

• Generator install 26 kW
  June 2026 · Frederick County

  Install (2) 420lb/120 gallon propane tanks. Run gas line to existing 26kw whole house generator. Install grill quick di…

• Propane tank install
  May 2026 · Frederick County

  Install 500 gallon above ground propane tank.

• Generator install 18 kW
  May 2026 · Frederick County

  Install 18kw whole house generator with 20' of surface mounted gas line from existing gas regulator mounted on house. I…

• Generator install 24 kW
  July 2025 · Frederick County

  Installing a 24kw whole home generator with (2) propane tank. 125 gallon tanks.Related Electrical Permit (for generator…

• Generator install 14 kW
  February 2025 · Frederick County

  Installing 14kw generator. Setting 1-100gal LP tank. Running line about 20ft and hooking up.

• Plumbing work
  February 2025 · Frederick County

  Running LP gas line from 100gal LP tank to and hooking up LP heater.

• Plumbing install
  January 2025 · Frederick County

  Setting 1-100gal LP tank, running line and installing log set.

• Generator install 60 kW
  October 2024 · Frederick County

  Installing 60kw generator. Hand digging trench for conduit in poured pad. Running line and hooking up to existing LP re…

Licensing

Frederick County does not publish license records with its permit data, so none appear here. That is a gap in the county's published data, not a statement about this contractor.

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

• Frederick County: 86 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 here do not list a license type for this contractor. That does not mean the contractor is unlicensed; not every county publishes license data with its permits.

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 Plumbing contractors in Frederick County