Updated June 2026
Basement Apartment / In-Law Suite · Millburn, NJ
We design and build code-compliant finished basements and accessory apartments that add livable space and rental potential. Request a walkthrough to get a site-specific estimate.
We convert unfinished basements into self-contained apartments or in-law suites with sleeping, bathing, kitchenettes, egress, insulated walls, and mechanical planning. Work includes framing, drywall, tile, flooring, cabinetry, lighting, and code-required exits and smoke/CO detection. We focus on usable layouts that fit typical Millburn lot constraints and basement ceiling heights.
Our work
FAQ
Costs vary by scope, egress needs, and finishes. Expect a wide range driven by whether you need excavation for egress, separate mechanicals, or a full kitchen. We provide a written estimate after a walkthrough so you can compare line-item pricing.
A typical interior-only conversion takes 8–16 weeks after permits are issued; permit turnaround with local jurisdiction adds time. We give a project schedule with the estimate and update it during the walkthrough.
Yes, many homeowners stay in their homes. We stage work to separate living areas, control dust, and schedule noisy tasks. Final phasing is outlined in the estimate and project plan discussed at the walkthrough.
Schedule an on-site consultation and walkthrough. We measure the space, review egress and mechanical options, and deliver a written scope and estimate so you can decide on proceeding.
Real basement apartment / in-law suite projects in New Jersey homes — same room, before we started and after we finished. Move the handle.
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Edison basement recreation room with game zones
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Reviews
“I highly recommend Home Concept Construction. This was truly the best construction company I’ve ever worked with in my lifetime. Their team was professional, reliable, and incredibly efficient from start to finish. They are men of their word—honest, hardworking, and committed to delivering quality results. Whether i…”
monique venable
6 months ago
“Oscar and his team are expert craftsmen. Our kitchen renovation is so beautiful the house looks like a new build. They came when said they would and returned all calls promptly. I highly recommend Home Concepts construction and will be using them again for other projects.”
Donna G
a year ago
“Oscar and his team are second to none. Their work is of high quality, with precision. The team renovated our kitchen and family room, installed engineered hardwood floors throughout our home, painted plus some. They are extremely professional, flexible and accommodating. Oscar is a creative thinker and designed g…”
Audrey Sudran
a year ago
Verified reviews from Home Concepts Construction’s Google Business Profile. Read all reviews on Google →
Schedule
Pick a day and time that works for you. We come to your Millburn home, walk the space, take measurements, and put a written scope together on-site. About 45-60 minutes.
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Millburn, NJ
Free in-home walkthrough. Written scope before you commit. One team from demolition to final inspection.
Get a free quote
Tell us a little about the project and we'll get back within one business day with real answers about how it would go in a Millburn home.
Free in-home visit
We come to you. Measure, plan, and quote on-site.
Licensed in NJ
NJ HIC #13VH10078600
Real response
Within one business day.
See more from Basement Apartment / In-Law Suite or learn about remodeling in Millburn, NJ.
Nearby towns
Same crew, same standards one town over. Tap to see how the project would go there.
Ready to start?
No pressure, no obligation. We’ll walk through what’s worth doing first, what can wait, and what to watch out for — before anyone talks contracts.
