Accessory Structure permits · Maryland

Where Maryland builds garages and sheds, permit by permit.

Garages, sheds, and accessory dwellings are property expansion, filed as their own permits and often followed by service work. Tradewinds observes them in county permit records.

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What an accessory structure filing shows.
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Detached garages

A garage build is a large outbuilding spend that usually pulls its own electrical service run.

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Accessory dwellings

An accessory dwelling is a second full set of mechanical, electrical, and plumbing work on one parcel.

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Sheds and outbuildings

Smaller structures still mark a homeowner investing in the property, and they cluster with outdoor living work.

Service that follows

Powering a new structure means a separate electrical filing, often weeks after the structure permit.

27586
accessory structure permits observed in Maryland, since January 2019

By county

Baltimore 9787
Frederick 7671
Carroll 4087
Howard 3049
Baltimore City 2356
Anne Arundel 600
Prince George's 36

By year

2019 332
2020 345
2021 2956
2022 3327
2023 4142
2024 5365
2025 6152
2026 4967

Other trades in Maryland

Accessory Structure in other states

See last week's activity, free

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

Working in Maryland?

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.