Looking for a basement contractor in Lake Barrington, IL? Describe your project once and up to three basement contractors who work in Lake Barrington and Lake County get back to you with a quote. It's free and there is no obligation.
Lake Barrington is home to about 5,160 people (2024 Census Bureau estimate), a growing community (+1.2% since 2020). With 899 people per sq mi, it is a semi-rural area. Full basements are common here and often the cheapest way to add living space.
Lake Barrington at a glance
- Population (Census Bureau estimate, 2024)
- 5,160 (+1.2% since 2020)
- Rank in Illinois
- 325th of 1,294 cities and towns
- Land area
- 5.7 sq mi
- Population density
- 899 people per sq mi (semi-rural)
- Type
- Village (Lake Barrington village)
- Main county
- Lake County
What to check before hiring in Lake Barrington
- Moisture first: waterproof before finishing.
- Egress: in Illinois, a basement bedroom needs an escape opening.
- Radon: test before you finish.
- Price drivers: size, bathroom, ceiling height, finishes and egress.
Useful official resources
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ICC: International Code Council
Official information and guidance.
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EPA: radon
Official information and guidance.
Services available in Lake Barrington
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Basement finishing
Framing, insulation, electrical, drywall and flooring of a basement, with permit.
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Basement bathroom or rental unit
Bathroom, kitchenette or legal basement unit with egress and plumbing.
Frequently asked questions in Lake Barrington
How much does basement finishing cost in Lake Barrington, IL?
It depends on size, bathroom and finishes. Describe your basement: contractors who serve Lake Barrington reply with a quote.
How long does it take?
Often several weeks.
Can I rent it out?
Only if local rules allow an accessory unit; check zoning.
Which basement contractors will contact me?
Up to three independent basement contractors who serve Lake Barrington 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.