Gas permits · Maryland

Where Maryland runs and replaces gas, permit by permit.

Gas line and appliance filings mark the moment a fossil system is chosen or replaced, which is the moment an electric alternative is still on the table. Tradewinds observes them in county permit records.

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What the gas permit record shows.
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Appliance replacement

A gas appliance permit locks in that fuel for the equipment's life, so the filing is the last decision point.

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New service and line work

A new gas run is infrastructure going into a parcel, usually alongside a renovation or an addition.

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New construction hookups

Builders file gas work early, which dates the rest of the mechanical sequence on that parcel.

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Who does the work

Gas filings name the mechanical or plumbing firm, which is often the same shop filing the HVAC permit next door.

58577
gas permits observed in Maryland, since January 2019

By county

Baltimore 41191
Carroll 5650
Baltimore City 5161
Howard 2849
Anne Arundel 2184
Frederick 1542

By year

2019 543
2020 442
2021 2311
2022 10815
2023 10035
2024 10925
2025 12744
2026 10762

Other trades in Maryland

Gas in other states

See last week's activity, free

Every Monday we publish last week's gas permits for every county we cover. Browse this week's activity.

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Tell us your territory and we will bring the data to the first call. See the counties and trades we cover on the coverage page, or the firms doing this work in the contractor registry.

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Built from county permit filings. Not every filing names a trade cleanly, and counties differ in what they publish, so these counts reflect our coverage as much as the work happening on the ground.