Data through April 2026 · updated 20 Oct 2026
320 permits on homes in ZIP code 80304, May 2023 through April 2026, pulled by 156 contractors: 4% of the 7,668 permits we track in unincorporated Boulder County. Heating & Cooling leads with 86 permits (27%), then roofing with 39. Counts cover the 10 kinds of home work we track, not every permit filed in 80304.
Each permit is counted at its property's ZIP code. Share here is the trade's part of the 320 permits in 80304; countywide is the same for all of Boulder County. Firms are distinct business names with at least one permit here. A trade name opens every Boulder County contractor in that trade.
| Trade | Permits | Share here | Countywide | Firms |
|---|---|---|---|---|
| Heating & Cooling | 86 | 27% | 25% | 32 |
| Roofing | 39 | 12% | 20% | 28 |
| Solar & Battery | 37 | 12% | 13% | 19 |
| Windows & Doors | 37 | 12% | 11% | 14 |
| Electrical | 32 | 10% | 9% | 26 |
| Plumbing & Water Heater | 26 | 8% | 8% | 14 |
| Generator | 24 | 8% | 4% | 9 |
| Remodel & Repair | 23 | 7% | 6% | 22 |
| Siding | 10 | 3% | 2% | 6 |
| Addition | 6 | 2% | 2% | 6 |
The firms with the most permits in 80304 for the 3 biggest trades here, May 2023 through April 2026. This is volume, not quality: a busy firm is not a careful one. The compare pages let you pick what you value and build your own list.
The other 39 heating & cooling permits here were spread across the rest of the firms. Compare all Boulder County HVAC contractors →
The other 24 roofing permits here were spread across the rest of the firms. Compare all Boulder County roofers →
The other 16 solar & battery permits here were spread across the rest of the firms. Compare all Boulder County solar installers →
The middle value contractors wrote on the permit when they applied: half were filed for less, half for more. It is not a quote and not the final bill. Shown where the trade carries a value and 80304 has at least 20 priced permits.
| Trade | Usual here | Usual countywide | Priced permits here |
|---|---|---|---|
| Heating & Cooling | $12,339 | $11,058 | 78 |
| Roofing | $16,500 | $14,988 | 39 |
| Solar & Battery | $28,728 | $28,000 | 37 |
| Windows & Doors | $18,000 | $11,703 | 37 |
| Electrical | $2,152 | $2,500 | 32 |
| Plumbing & Water Heater | $3,551 | $3,556 | 24 |
| Generator | $14,000 | $15,000 | 24 |
| Remodel & Repair | $13,283 | $27,000 | 21 |
We publish counts by ZIP code and by contractor, not a list of permits by street address. The full record for one property, with every permit, its status and its inspections, is kept by the office that issued the permits; our source here is Boulder County Community Planning & Permitting building permits on homes in unincorporated Boulder County (the County's Accela permit layer, which stopped taking new applications on May 4, 2026, so the data ends with April 2026; the City of Boulder and the other cities issue their own permits), with issue dates and declared job values from the Boulder County Assessor's permit file. Ask that permit office for a property's permit history, or search its public records by address.
For a contractor you are about to hire, open their page from the lists above to see every permit they pulled across Boulder County. Boulder County permit statistics → · How the records work in Boulder County →
Source: Boulder County Community Planning & Permitting building permits on homes in unincorporated Boulder County (the County's Accela permit layer, which stopped taking new applications on May 4, 2026, so the data ends with April 2026; the City of Boulder and the other cities issue their own permits), with issue dates and declared job values from the Boulder County Assessor's permit file. The window is May 2023 through April 2026. Each permit is placed by its property's ZIP code (the address on the permit, or the parcel's when the permit has none).
Counted: permits on homes for the 10 kinds of work we track (heating & cooling, roofing, solar & battery, windows & doors, electrical, plumbing & water heater, remodel & repair, generator, addition, siding) where the record names a contractor. Not counted: commercial work, trades we don't read, and permits with no contractor (owner-pulled work). So this is not the county's count of every permit in 80304.
A ZIP code does not follow city or county lines; these count only permits in unincorporated Boulder County. Counts are permits, not jobs: one job can need several permits.
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Free to reuse with attribution (CC BY 4.0). Please credit Contractor Records and link to this page. Suggested citation:
Contractor Records, "Building permits in 80304, Boulder County (unincorporated)", https://contractorrecords.com/boulder-county/zip/80304, data through April 2026, from Boulder County building-permit records.Link to a table: By trade · Most active contractors · Usual filed value.
Download the tables (CSV): Permits by trade · Usual filed value.