Looking for an addition contractor in Colby, WI? Describe your project once and up to three addition contractors who work in Colby and Clark County get back to you with a quote. It's free and there is no obligation.
Colby is home to about 1,959 people (2024 Census Bureau estimate), a shrinking community (−1.9% since 2020). With 1,196 people per sq mi, it is a suburban area. Growing families here often add space instead of moving.
Colby at a glance
- Population (Census Bureau estimate, 2024)
- 1,959 (−1.9% since 2020)
- Rank in Wisconsin
- 266th of 607 cities and towns
- Land area
- 1.6 sq mi
- Population density
- 1,196 people per sq mi (suburban)
- Type
- City (Colby city)
- Main county
- Clark County
What to check before hiring in Colby
- Zoning: check Colby's setbacks, lot coverage and height limits first.
- License and permit: in Wisconsin, additions are built by licensed contractors under a permit.
- Structure: second stories need an engineer to check the existing house.
- Price drivers: size, foundation, roof tie-in, plumbing and finishes.
Useful official resources
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ICC: International Code Council
Official information and guidance.
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NAHB
Official information and guidance.
Services available in Colby
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Room addition
Ground-floor addition with foundation, framing, roof and finishes.
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Second-story addition
New floor over the existing house, with structural engineering.
Frequently asked questions in Colby
How much does an addition cost in Colby, WI?
It depends on size, foundation and finishes. Describe your project: contractors who serve Colby reply with a quote.
How long does it take?
Often a few months, plus design and permits.
Does an addition raise property taxes?
Usually, since it increases the assessed value.
Which addition contractors will contact me?
Up to three independent addition contractors who serve Colby and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.