The House Year · state by state
Colorado
64 counties in the data · Zones 4b–7a · ~128–264 freezing days a year
What Colorado does to a house
A state is a big place — these are the ranges, not averages. The county pages pin the numbers down.
- Climate
- Zones 4b–7a. Freezing days run from ~128 to ~264 a year depending on the county.
- First freeze
- Usually lands anywhere from September 7 to October 20 depending on the county.
- The air
- Runs from dry to humid, county by county.
- The load
- Heating season rules the calendar in most of the state.
- Termites
- Light pressure as a state band.
- Radon
- EPA Zone 1 — the highest band — statewide. A one-time test settles it either way.
- Labor
- Labor sits near one level statewide — every price band on this site adjusts to the county anyway.
County pages in Colorado
- Adams CountyZone 6a · ~163 freeze days
- Arapahoe CountyZone 6a · ~172 freeze days
- Boulder CountyZone 6a · ~211 freeze days
- Denver CountyZone 6a · ~156 freeze days
- Douglas CountyZone 5b · ~167 freeze days
- El Paso CountyZone 6a · ~162 freeze days
- Jefferson CountyZone 6a · ~156 freeze days
- Larimer CountyZone 5b · ~184 freeze days
- Weld CountyZone 5b · ~176 freeze days
All 64 Colorado counties are in the data.The rest of the country →
A state is a big place.
This page is the wide shot. Your county narrows it, and the app builds the year for your exact house — your dates, your prices, your reminders.
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