Looking for a basement contractor in Portal, ND? Describe your project once and up to three basement contractors who work in Portal and Burke County get back to you with a quote. It's free and there is no obligation.
Portal is home to about 120 people (2024 Census Bureau estimate), a shrinking community (−2.4% since 2020). With 180 people per sq mi, it is a semi-rural area. Full basements are common here and often the cheapest way to add living space.
Portal at a glance
- Population (Census Bureau estimate, 2024)
- 120 (−2.4% since 2020)
- Rank in North Dakota
- 203rd of 355 cities and towns
- Land area
- 0.7 sq mi
- Population density
- 180 people per sq mi (semi-rural)
- Type
- City (Portal city)
- Main county
- Burke County
What to check before hiring in Portal
- Moisture first: waterproof before finishing.
- Egress: in North Dakota, 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 Portal
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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 Portal
How much does basement finishing cost in Portal, ND?
It depends on size, bathroom and finishes. Describe your basement: contractors who serve Portal 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 Portal 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.