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Plumbing permits in unincorporated Adams County, CO

Data through September 2026 · updated 23 Oct 2026

320 plumbing permits were issued in unincorporated Adams County, October 2024 through September 2026: about 160 a year and 5% of all permits. 185 plumbing permits in the last 12 months (Oct 2025–Sep 2026), 37% more than the 135 in the 12 months before. The busiest month is September.

320permits issued
185last 12 months
Sepbusiest month
Sep 2026records through

Plumbing permits by month

Permits issued each month, October 2024 through September 2026.

Oct 2024: 20Oct2024Nov 2024: 13Dec 2024: 15Jan 2025: 15Jan2025Feb 2025: 8Mar 2025: 6Apr 2025: 6May 2025: 4Jun 2025: 6Jul 2025: 14JulAug 2025: 10Sep 2025: 18Oct 2025: 11Nov 2025: 17Dec 2025: 11Jan 2026: 17Jan2026Feb 2026: 20Mar 2026: 18Apr 2026: 8May 2026: 13Jun 2026: 12Jul 2026: 17JulAug 2026: 19Sep 2026: 22
The same numbers as a table
MonthPermits
Oct 202420
Nov 202413
Dec 202415
Jan 202515
Feb 20258
Mar 20256
Apr 20256
May 20254
Jun 20256
Jul 202514
Aug 202510
Sep 202518
Oct 202511
Nov 202517
Dec 202511
Jan 202617
Feb 202620
Mar 202618
Apr 20268
May 202613
Jun 202612
Jul 202617
Aug 202619
Sep 202622

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When plumbing permits are filed

By calendar month, 100 = an average month (the thin line). September is the busiest (150), April the quietest (52). A busy month at the permit counter usually means a longer wait for a contractor.

January: 120 (100 = an average month)February: 105 (100 = an average month)March: 90 (100 = an average month)April: 52 (100 = an average month)May: 64 (100 = an average month)June: 68 (100 = an average month)July: 116 (100 = an average month)August: 109 (100 = an average month)September: 150 (100 = an average month)150October: 116 (100 = an average month)November: 112 (100 = an average month)December: 98 (100 = an average month)JFMAMJJASOND
The same numbers as a table
MonthIndex
January120
February105
March90
April52
May64
June68
July116
August109
September150
October116
November112
December98

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The county's own permit types

How the county filed these permits. We group its types into kinds of work; this is the split.

Permit typePermitsShare
Replacement20363%
(type of work not given)6219%
New175%
Other - Alteration103%
Water Heater - Replace82%
Other - Repair82%
Other - New72%
Other - Replace3under 1%
Water Heater - New1under 1%
Other - Move1under 1%

Download this table (CSV)

Nearby permit data

Plumbing permits for other places in Denver and Boulder. Each permit office keeps its own file, so the numbers are not added together.

How these numbers are made

Source: Adams County, Building Permits Eye On Adams (ArcGIS layer), read 23 Oct 2026. We count permits issued October 2024 through September 2026; denied and withdrawn permits are left out. The county's layer leaves most permits marked Permit Issued after the work is done, so no finished share is shown.

Permits the Adams County Building Division issues for unincorporated land only, such as Welby, Sherrelwood, Berkeley, Twin Lakes, Strasburg and the rural east. Thornton, Westminster, Commerce City, Brighton, Northglenn, Federal Heights, Arvada and Aurora issue their own permits and are not in this file.

  • The county's permit layer names no contractor, so there are no contractor lists, rankings or firm pages for Adams County.
  • The layer has no issue date, so a permit is dated by the day its case was opened; cases still in review or waiting on fees are not counted.
  • There is no job value, no final inspection date and no ZIP code in the layer, so we show no costs, no time to final and no ZIP pages.
  • The type of work is blank on about a third of permits (mostly online re-roof and furnace or air-conditioner permits); for those the kind of work is read from the permit's description.

Counts are permits, not jobs: one job can need several permits. Nobody paid to be on this page and nobody can. Sources and definitions →

Cite this page

Free to reuse with attribution (CC BY 4.0). Please credit Contractor Records and link to this page. Suggested citation:

Contractor Records, "Plumbing permits in unincorporated Adams County, CO", https://contractorrecords.com/adams-county/plumbing-permits, data through September 2026, from Adams County Community & Economic Development building-permit records.

Link to a table: By month · Season · Permit types.

Download the tables (CSV): Plumbing permits by month · Plumbing permits by calendar month (index) · Plumbing permits by permit type.

Common questions

  • How many plumbing permits does Adams County issue a year?About 160 a year in unincorporated Adams County: 320 permits issued October 2024 through September 2026, 185 of them in the last 12 months.
  • When do people in Adams County file the most plumbing permits?September (150 against an average month of 100); April is the quietest (52). If you can choose, a quiet month at the permit counter can mean contractors have more room in their schedules.