Plumbing permits · District of Columbia

Where District of Columbia repipes and re-plumbs, permit by permit.

Water heaters, repipes, and fixture work are permitted job by job, each naming the firm that filed it. Tradewinds observes them in county permit records, tied to the property behind each filing.

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What the plumbing permit record shows.
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Water heater replacement

The most common filing in the trade, and the moment a heat pump water heater is a live option rather than a pitch.

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Whole-house repipes

A repipe is a large committed spend on an older house, and it opens walls that other trades are then in.

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Fixture and bath work

Bath fixture permits travel with interior remodel filings on the same parcel, often within weeks.

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Who files the volume

Filings name the plumbing firm, so a county's active shops and their relative volume are countable.

196870
plumbing permits observed in District of Columbia, since January 2009

By county

Washington DC 196870

By year

2009 6733
2010 8274
2011 9400
2012 9652
2013 10524
2014 11244
2015 11717
2016 11732
2017 11835
2018 12268
2019 12875
2020 11368
2021 11148
2022 12169
2023 11110
2024 12019
2025 13559
2026 9243

Other trades in District of Columbia

Plumbing in other states

See last week's activity, free

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

Working in District of Columbia?

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.