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HVAC permits in the City of Longmont, CO

Data through July 2026 · updated 19 Oct 2026

2,394 HVAC permits were issued in the City of Longmont, August 2024 through July 2026: about 1,197 a year and 24% of all permits. 1,255 HVAC permits in the last 12 months on file (Aug 2025–Jul 2026), 10% more than the 1,139 in the 12 months before. The busiest month is July. 80501 has the most, 1,346.

2,394permits issued
1,255last 12 months on file
Julbusiest month
$11,263usual declared value
Jul 2026records through

HVAC permits by month

Permits issued each month, August 2024 through July 2026.

Aug 2024: 119Aug2024Sep 2024: 73Oct 2024: 83Nov 2024: 103Dec 2024: 80Jan 2025: 107Jan2025Feb 2025: 81Mar 2025: 66Apr 2025: 82May 2025: 81Jun 2025: 129Jul 2025: 135JulAug 2025: 116Sep 2025: 92Oct 2025: 129Nov 2025: 89Dec 2025: 89Jan 2026: 80Jan2026Feb 2026: 78Mar 2026: 77Apr 2026: 99May 2026: 105Jun 2026: 133Jul 2026: 168Jul
The same numbers as a table
MonthPermits
Aug 2024119
Sep 202473
Oct 202483
Nov 2024103
Dec 202480
Jan 2025107
Feb 202581
Mar 202566
Apr 202582
May 202581
Jun 2025129
Jul 2025135
Aug 2025116
Sep 202592
Oct 2025129
Nov 202589
Dec 202589
Jan 202680
Feb 202678
Mar 202677
Apr 202699
May 2026105
Jun 2026133
Jul 2026168

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When HVAC permits are filed

By calendar month, 100 = an average month (the thin line). July is the busiest (152), March the quietest (72). A busy month at the permit counter usually means a longer wait for a contractor.

January: 94 (100 = an average month)February: 80 (100 = an average month)March: 72 (100 = an average month)April: 91 (100 = an average month)May: 93 (100 = an average month)June: 131 (100 = an average month)July: 152 (100 = an average month)152August: 118 (100 = an average month)September: 83 (100 = an average month)October: 106 (100 = an average month)November: 96 (100 = an average month)December: 85 (100 = an average month)JFMAMJJASOND
The same numbers as a table
MonthIndex
January94
February80
March72
April91
May93
June131
July152
August118
September83
October106
November96
December85

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What an HVAC permit is declared at

The value written on the permit at application, from 2,391 permits with one. Not a quote and not the final bill.

MeasureValue
Usual declared value$11,263
Middle half$7,620–$18,209

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ZIP codes with the most HVAC permits

Counted at the property's ZIP code. Share is the part of the city's 2,394 HVAC permits.

ZIP codePermitsShare
805011,34656%
8050372930%
805042008%

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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
Heating System1,53564%
Air Conditioner80534%
Gas Fireplace251%
Electrical/Mechanical14under 1%
Wood Fireplace13under 1%
Other2under 1%

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Nearby permit data

HVAC 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, "HVAC permits in the City of Longmont, CO", https://contractorrecords.com/longmont/hvac-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): HVAC permits by month · HVAC permits by calendar month (index) · HVAC permits: declared value · HVAC permits by ZIP code · HVAC permits by permit type.

Common questions

  • How many HVAC permits does Longmont issue a year?About 1,197 a year in the City of Longmont: 2,394 permits issued August 2024 through July 2026, 1,255 of them in the last 12 months on file (to July 2026).
  • When do people in Longmont file the most HVAC permits?July (152 against an average month of 100); March is the quietest (72). 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 HVAC permits in Longmont?80501, with 1,346 of the 2,394 (56%); then 80503 (729).