Updated June 2026
Basement Apartment / In-Law Suite · Highland Park, NJ
Design and finish a safe, code-compliant basement apartment or in-law suite that fits your household and budget. We handle plans, permits, and interior build‑out.
We convert unused basements into fully functional living units: insulated framing, egress windows or exits, separate living and sleeping areas, kitchens or kitchenettes, bathrooms, HVAC integration, lighting, flooring, and sound control. Work meets NJ code for legal occupancy and focuses on durable materials and clear scope so the space rents, houses family, or becomes accessible living.
Our work
FAQ
Costs vary by scope, code upgrades, and finishes. A site walkthrough and plan review are required for an accurate estimate. We provide an itemized written estimate after the initial consultation.
Typical interior-only conversions run from 6 to 12 weeks after permits are issued. Timeline depends on permit lead time, inspections, and selected finishes.
There is daily activity, noise, and material staging. We separate work areas, protect existing living spaces, and schedule noisy work during set hours to limit disruption.
We start with a site walkthrough and needs assessment, produce a scope and permit-ready drawings, begin rough-in work, complete finishes, then handle inspections and punch list. Request a walkthrough and estimate to get a project schedule.
Yes — we prepare permit documents, coordinate with local inspectors, and build to NJ occupancy and egress requirements so the unit meets code for use.
Real basement apartment / in-law suite projects in New Jersey homes — same room, before we started and after we finished. Move the handle.
Drag the handleSwipe the handle or use ←→ to compare before and after.
Edison basement recreation room with game zones
Edison, NJ
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 Highland Park home, walk the space, take measurements, and put a written scope together on-site. About 45-60 minutes.
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Highland Park, 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 Highland Park 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 Highland Park, 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.
