TRISTATE HOME SERVICES

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 8

Electrical 3

Plumbing 1

Recent work

• Electrical upgrade 200 amps
  April 2026 · Howard County

  Upgrade (2) 200 amp panels

• Electrical work
  August 2025 · Howard County

  Alteration - total of (2) devices

• Electrical replacement
  April 2025 · Howard County

  Replacement of a high velocity system

• Water heater replacement
  October 2024 · Howard County

  Replace N/G 75 Gal Power Vent Water Heater

• Furnace install
  October 2024 · Howard County

  Changing out a heat pump system to a gas furnace

• Heat pump install
  October 2024 · Howard County

  Ml17xp1-240-230---lennox Heat Pump---Replacement of Kind

• Furnace replacement
  July 2024 · Howard County

  Replacing a gas furnace & a/c system & indoor coil; Like for like systems; Lenox ml17xc1-036-230; Lenox a/c coil cx35-4…

Licensing

• Master Plumber and Gas Fitter Issued by Maryland Board of Plumbing. Verify
• Maryland State Electrician Issued by Maryland Board of Master Electricians. 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: 12 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 TRISTATE HOME SERVICES under Master Plumber and Gas Fitter, Maryland State Electrician. 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