Basement Finishing · New Jersey

Turn the basement into real living space.

A family room, home office, in-law suite, or all of the above — finished to code and built for the Jersey climate.

NJ-based · Old BridgeLicensed & InsuredFree on-site quoteOwner-led — you work with Adam
Why Legion Build

Finished square footage that adds real value.

01 — CODE

Egress & compliance

Egress windows, moisture control, and insulation done to code.

02 — CRAFT

Custom finish work

Built-ins, wet bars, and finish carpentry that feel intentional, not added on.

03 — ONE TEAM

Owner-led build

Design, permits, and build coordinated under one roof.

Recent Work

A few interiors we've finished.

What We Build

What we build.

A finished basement can do a lot — we build it around how your family will use it.

  • Family rooms and entertainment spaces
  • Guest suites and bedrooms
  • Home theaters and fitness rooms
  • Wet bars and kitchenettes
  • Egress windows and moisture control
  • Custom built-ins and storage
Custom built-in finish carpentry by Legion Build in New Jersey
Talk to the owner

Get a straight number for your basement.

We'll assess your space and Adam will give you an honest, itemized quote, free of charge.

Request a Free Quote
Service Area

Serving across New Jersey.

Based in Old Bridge, NJ — serving Monmouth, Ocean, Middlesex, Somerset, and Union counties.

MonmouthOceanMiddlesexSomersetUnion
Helpful Guides

Basement cost & planning guides

FAQ

Common questions

How much does it cost to finish a basement in NJ?

It’s usually quoted per square foot and depends on finishes, whether you add a bath or egress, and moisture work. Our guides and calculator give realistic NJ ranges.

Do I need an egress window?

If you’re adding a bedroom or sleeping area, code generally requires an egress window for safe exit. We handle the permitting and install.

How long does it take?

Many basement projects are completed in 4–8 weeks; we give you a schedule before work begins.

Call Us Today (732) 674-3454