D&A SERVICE COMPANY

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, 67% are HVAC work.

HVAC · 6Plumbing · 3

Recent work

• Gas water heater replacement
  August 2026 · Howard County

  Replacing one natural gas water heater in basement of house

• Furnace replacement
  August 2026 · Howard County

  Replacing one natural gas furnace in basement of home

• Water heater replacement
  May 2026 · Howard County

  Replacing one 50 gallon water heater in basement of house

• Propane tank install
  January 2026 · Howard County

  SUITE 100/UNOCCUPIED/ Replacing 3- oil fired hanging heaters with 3-new PROPANE gas hanging heaters in warehouse. All n…

• HVAC install
  January 2026 · Howard County

  SUITE 100 / UNOCCUPIED / In the office space we will be removing existing split system and installing one new 12.5 ton …

• Basement finishing
  November 2024 · Howard County

  Reworking ductwork to accommodate renovations to basement and one new bath fan and vent. (RELOCATED SUPPLY LINES SAME S…

• Plumbing work
  September 2024 · Howard County

  Suite E/Vacant/Requesting new gas meter so that existing commercial building can have a meter for each suite for billin…

• Heat pump install
  July 2024 · Howard County

  Installing two new Mitsubishi multi zone ductless heat pump systems to condition house. One system will be for the left…

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.

What this page is, and is not

• Howard County: 9 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 D&A SERVICE COMPANY 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 Howard County