D & I MECHANICAL CONTRACTORS

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, 64% are HVAC work.

HVAC 9

Plumbing 5

Recent work

• Water heater replacement
  July 2026 · Anne Arundel County

  FS8 Pilates - Suite C - Install Water Closet, Lav, Mop Sink, Drinking Fountain, Water Heater

• HVAC install
  July 2026 · Anne Arundel County

  FS8 Pilates - Suite C - Install RGDs, Fans, Heaters, Ductwork

• Plumbing removal
  July 2026 · Anne Arundel County

  FSIC Restrooms - Remove existing Water Closets, Lavatories, Urinals and Replace with New

• HVAC work
  July 2026 · Anne Arundel County

  Whitebox - Suite 350 - Demolition, Relocation of VAVs, RGDs

• Plumbing install
  June 2026 · Anne Arundel County

  Hewlett Packard - Suite 120 Install Pantry Sink, Wall Outlet Box & Piping for Breakroom

• Interior replacement
  June 2026 · Anne Arundel County

  Replacement of fixtures in men and womans gang bathrooms. Includes 10 Water Closets, 10 Lavs, & 2 Urinals.

Licensing

• Maryland HVACR Contractor Issued by Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration. Verify
• Master Plumber and Gas Fitter Issued by Maryland Board of Plumbing. 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 December 2025. Years before that are not shown because we hold nothing for them, not because nothing happened.

What this page is, and is not

• Anne Arundel County: 14 permits observed, from records beginning December 2025.

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 D & I MECHANICAL CONTRACTORS under Maryland HVACR Contractor, Master Plumber and Gas Fitter. 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 Anne Arundel County