Looking for an addition contractor in Ephraim, WI? Describe your project once and up to five addition contractors who work in Ephraim and Door County get back to you with a quote. It's free and there is no obligation.
Ephraim is home to about 340 people (2024 Census Bureau estimate), a stable community (−0.3% since 2020). With 90 people per sq mi, it is a rural area. Growing families here often add space instead of moving.
Ephraim at a glance
- Population (Census Bureau estimate, 2024)
- 340 (−0.3% since 2020)
- Rank in Wisconsin
- 534th of 607 cities and towns
- Land area
- 3.8 sq mi
- Population density
- 90 people per sq mi (rural)
- Type
- Village (Ephraim village)
- Main county
- Door County
What to check before hiring in Ephraim
- Zoning: check Ephraim'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 Ephraim
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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 Ephraim
How much does an addition cost in Ephraim, WI?
It depends on size, foundation and finishes. Describe your project: contractors who serve Ephraim 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 five independent addition contractors who serve Ephraim 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.