Looking for a basement contractor in Mount Arlington, NJ? Describe your project once and up to three basement contractors who work in Mount Arlington and Morris County get back to you with a quote. It's free and there is no obligation.
Mount Arlington is home to about 5,979 people (2024 Census Bureau estimate), a growing community (+1.2% since 2020). With 2,791 people per sq mi, it is a suburban area. Full basements are common here and often the cheapest way to add living space.
Mount Arlington at a glance
- Population (Census Bureau estimate, 2024)
- 5,979 (+1.2% since 2020)
- Rank in New Jersey
- 178th of 323 cities and towns
- Land area
- 2.1 sq mi
- Population density
- 2,791 people per sq mi (suburban)
- Type
- Borough (Mount Arlington borough)
- Main county
- Morris County
What to check before hiring in Mount Arlington
- Moisture first: waterproof before finishing.
- Egress: in New Jersey, 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 Mount Arlington
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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 Mount Arlington
How much does basement finishing cost in Mount Arlington, NJ?
It depends on size, bathroom and finishes. Describe your basement: contractors who serve Mount Arlington 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 Mount Arlington 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.