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Solar permits in the City of Longmont, CO

Data through July 2026 · updated 19 Oct 2026

238 solar permits were issued in the City of Longmont, August 2024 through July 2026: about 119 a year and 2% of all permits. 137 solar permits in the last 12 months on file (Aug 2025–Jul 2026), 36% more than the 101 in the 12 months before. The busiest month is October. 80501 has the most, 116.

238permits issued
137last 12 months on file
Octbusiest month
$20,351usual declared value
Jul 2026records through

Solar permits by month

Permits issued each month, August 2024 through July 2026.

Aug 2024: 1Aug2024Sep 2024: 8Oct 2024: 7Nov 2024: 11Dec 2024: 2Jan 2025: 5Jan2025Feb 2025: 2Mar 2025: 6Apr 2025: 10May 2025: 15Jun 2025: 5Jul 2025: 29JulAug 2025: 24Sep 2025: 20Oct 2025: 35Nov 2025: 10Dec 2025: 15Jan 2026: 6Jan2026Feb 2026: 2Mar 2026: 9Apr 2026: 4May 2026: 3Jun 2026: 4Jul 2026: 5Jul
The same numbers as a table
MonthPermits
Aug 20241
Sep 20248
Oct 20247
Nov 202411
Dec 20242
Jan 20255
Feb 20252
Mar 20256
Apr 202510
May 202515
Jun 20255
Jul 202529
Aug 202524
Sep 202520
Oct 202535
Nov 202510
Dec 202515
Jan 20266
Feb 20262
Mar 20269
Apr 20264
May 20263
Jun 20264
Jul 20265

Download this table (CSV)

When solar permits are filed

By calendar month, 100 = an average month (the thin line). October is the busiest (212), February the quietest (20). A busy month at the permit counter usually means a longer wait for a contractor.

January: 55 (100 = an average month)February: 20 (100 = an average month)March: 76 (100 = an average month)April: 71 (100 = an average month)May: 91 (100 = an average month)June: 45 (100 = an average month)July: 171 (100 = an average month)August: 126 (100 = an average month)September: 141 (100 = an average month)October: 212 (100 = an average month)212November: 106 (100 = an average month)December: 86 (100 = an average month)JFMAMJJASOND
The same numbers as a table
MonthIndex
January55
February20
March76
April71
May91
June45
July171
August126
September141
October212
November106
December86

Download this table (CSV)

What a solar permit is declared at

The value written on the permit at application, from 237 permits with one. Not a quote and not the final bill.

MeasureValue
Usual declared value$20,351
Middle half$15,315–$28,544

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ZIP codes with the most solar permits

Counted at the property's ZIP code. Share is the part of the city's 238 solar permits.

ZIP codePermitsShare
8050111649%
805038134%
805043314%

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The city's own permit types

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

Permit typePermitsShare
Energy Efficient System237100%
Electrical/Mechanical1under 1%

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Nearby permit data

Solar permits for other places in the area. Each permit office keeps its own file, so the numbers are not added together.

Denver and Boulder

Northern Colorado

How these numbers are made

Source: Boulder County Assessor, public data files: Permits.csv (permits issued by Longmont), read 19 Oct 2026. We count permits issued August 2024 through July 2026; denied and withdrawn permits are left out. The file carries no usable permit status, so it can't say which permits were finished, so no finished share is shown.

Building permits the City of Longmont issues inside city limits, as recorded by the Boulder County Assessor. The City of Boulder and unincorporated Boulder County have their own pages on this site; neither is counted here, and neither are the parts of the Longmont area outside city limits.

  • Longmont does not publish its own permit file; these are the city's permits as the Boulder County Assessor records them. That copy names no contractor, so there are no contractor lists, rankings or firm pages for Longmont.
  • The Assessor's copy has no status and no final date, so we show no finished share and no time to final; every permit is listed as open.
  • Permits reach the Assessor some weeks after the city issues them, so the window ends in July 2026.
  • The value is the estimated value on the permit. Homes versus other property comes from the parcel's land class on the Assessor's roll, and the ZIP code from the county's address points.

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, "Solar permits in the City of Longmont, CO", https://contractorrecords.com/longmont/solar-permits, data through July 2026, from the City of Longmont (as recorded by the Boulder County Assessor) building-permit records.

Link to a table: By month · Season · Declared value · By ZIP code · Permit types.

Download the tables (CSV): Solar permits by month · Solar permits by calendar month (index) · Solar permits: declared value · Solar permits by ZIP code · Solar permits by permit type.

Common questions

  • How many solar permits does Longmont issue a year?About 119 a year in the City of Longmont: 238 permits issued August 2024 through July 2026, 137 of them in the last 12 months on file (to July 2026).
  • When do people in Longmont file the most solar permits?October (212 against an average month of 100); February is the quietest (20). If you can choose, a quiet month at the permit counter can mean contractors have more room in their schedules.
  • Which ZIP code has the most solar permits in Longmont?80501, with 116 of the 238 (49%); then 80503 (81).