Home Additions · New Jersey

More space, without moving.

Room additions, second stories, garage conversions, and in-law suites — designed to match your home and built to last.

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

20+ years of additions, engineered right.

01 — STRUCTURE

Engineered & permitted

Structural engineering, framing, roofing, and seamless tie-ins to your home.

02 — DESIGN

Matches your home

Rooflines, siding, and trim matched so the addition reads as original.

03 — PROCESS

On time, on budget

A collaborative, transparent build with post-project support.

Recent Work

A few additions we've built.

What We Build

What we build.

From a single room to a whole new level, every addition matches your home and your life.

  • Room and bump-out additions
  • Second-story additions
  • Garage conversions
  • In-law and guest suites
  • Sunroom additions
  • Full engineering, permits, and inspections
Completed home addition exterior in New Jersey
Talk to the owner

Get a straight number for your addition.

Tell us what you're picturing and Adam will map the most cost-effective path, 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

Addition & conversion guides

FAQ

Common questions

How long does a home addition take?

On average, 2 to 6 months depending on size, complexity, and permitting — including planning, approvals, construction, and final inspection.

Will it add value?

Yes — a well-planned addition increases both the square footage and functionality of your home, enhancing resale value.

Do you handle permits and engineering?

Yes. Additions are structural work — we handle permits, engineering, and inspections from drawings to final.

Call Us Today (732) 674-3454