Basement Remodeling in NYC and NJ
Basement remodeling and finishing across northern New Jersey, Long Island, and Staten Island, delivered by a Newark-based design-build firm with 10+ years on residential basements. Family rooms, home theaters, in-law suites, walk-out basements, and waterproofing-first builds — all under one project lead, with the foundation handled before the finish.
[License #] · 2-year workmanship warranty · 5.0 ★ Google · Licensed, Insured & Bonded · 10+ years.
Schedule a free consultation — in person or by video. Call (862) 430-3655.
Where basement work actually happens
Basement finishing is one of the few service types where Newark, NJ is the geographic advantage instead of the trade-off. Most NYC basement work is on Staten Island or in northern New Jersey — Bergen, Essex, Hudson, Union, and Morris counties — because that’s where the housing stock with full basements actually lives. Manhattan, Brooklyn, and Queens apartments don’t have basements; the buildings have shared cellars that aren’t homeowner-finishable. We do basement work in townhouses and brownstones across Brooklyn occasionally, but the bulk of the basement portfolio is suburban NJ and Long Island.
Basement services we offer
Family rooms and entertainment spaces
The most common basement build. Open family room with framed-out walls, drywall, recessed lighting, vinyl plank or engineered flooring, paint, and trim. Often paired with a wet bar, a half-bath, or a dedicated home theater. 6 to 8 weeks once permits clear.
In-law suites
Full living quarters within the basement: bedroom, bathroom, kitchenette, and a separate egress. Typically built for aging parents or adult children. Code requirements for separate dwelling vs. accessory living vary by township; we confirm during design.
Home theaters
Pre-wired surround sound, projector and screen mounting, acoustic wall and ceiling insulation, dimmer-controlled lighting scenes, and tiered seating where the basement layout supports it. Coordinated with AV integrators on systems above a certain complexity.
Walk-out basements
A doorway cut into the foundation with a structural header, frost-protected exterior stair if grade requires, and waterproofed opening. Most common on NJ properties with rear-yard slope. Adds 2 to 4 weeks to the build.
Basement bathrooms
Half-baths or full baths added to a finishing project. Plumbing rough-in often requires an above-floor sewage ejector pump because the basement floor is below the main sewer line. We size the pump for the fixture count and locate it accessibly for service.
Wine cellars
Climate-controlled rooms with insulated walls, vapor barriers, dedicated cooling units, and racking — built into a corner of a finished basement or as a standalone room.
Basement waterproofing (foundation prep)
Often the prerequisite to finishing. Interior French drains, exterior membrane application, sump pump installation, foundation crack injection, and dehumidification systems. We don’t finish a basement that takes water — we waterproof first.
How a basement build runs
- Free consultation. On site. Basements are a where-we-have-to-walk-the-space project type because ceiling height, mechanical layout, and existing waterproofing condition all need eyes on. We bring a moisture meter and measure floor-to-joist height in multiple spots.
- Design and permitting. Layout drawings, MEP coordination, township permit filing. NJ and Long Island municipalities typically clear basement permits in 4 to 8 weeks.
- Build. Waterproofing first if needed. Then framing, electrical and plumbing rough-in, HVAC tie-in, insulation, drywall, finish flooring, paint, trim, and fixtures.
- Walk-through and warranty. Punch list, deep clean, 2-year workmanship warranty, manufacturer pass-through.
Service areas
Basements happen mostly in our suburban service zones:
- Newark NJ home remodeling
- Jersey City home remodeling
- Hoboken home remodeling
- Elizabeth NJ home remodeling
- Long Island home remodeling
- Staten Island home remodeling
- Yonkers home remodeling
We also work basements in Bergen, Essex, Hudson, Union, and Morris counties in NJ, and across Nassau and parts of Suffolk on Long Island.
Featured basement projects
- Finished basement with home theater, NJ. 1,200-square-foot finish: family room, home theater with projector and surround sound, half-bath, wet bar, and a dedicated office. Vinyl plank flooring throughout. 9 weeks.
- In-law suite with walk-out, NJ. Full suite — bedroom, full bath, kitchenette, sitting area — with a new walk-out door cut into the rear foundation. Egress window in the bedroom for code compliance. 11 weeks.
- Waterproofing-first basement finish, NJ. Existing basement was taking water at the foundation joints. We installed an interior French drain, sump pump, and crack injection in week one, then framed and finished as a family room and laundry. 10 weeks total.
Why homeowners choose LM Pro for basements
- Waterproofing handled before finishing. We don’t finish over a moisture problem. Honest about scope when the foundation isn’t ready.
- Township permits filed under our license. Newark, Jersey City, Hoboken, Elizabeth, plus Long Island and Westchester — we know the local processes.
- Trusted licensed plumbers — long-term partners we’ve worked with for years. Above-floor sewage ejector pump sizing and basement bathroom rough-in done right the first time.
- In-house tile and stone setters for basement bathrooms, wine cellars, and entry floors.
- Egress and code compliance built into design. Bedroom egress windows, ceiling height confirmation, electrical panel access — all reviewed during design, not at final inspection.
- Bonded for NJ work. $25,000 NJ HIC Compliance Bond. NY work runs under separate coverage as required.
Frequently asked questions
How long does it take to finish a basement?
A typical basement finishing project runs 6 to 12 weeks, depending on size, plumbing scope, and whether structural waterproofing is needed first. A straightforward family-room finish (framing, drywall, flooring, lighting) is closer to 6 to 8 weeks. A full in-law suite with a kitchenette, bathroom, separate egress, and waterproofing prep is closer to 10 to 12 weeks.
Do you handle waterproofing before finishing a damp basement?
Yes — and we won't finish a basement without addressing water issues first. Interior French drains, exterior membrane and footing drainage, sump pump installation, foundation crack injection, and dehumidification systems are all in scope. Skipping waterproofing on a basement that takes water turns a finished basement into a mold problem within 18 months. We say no to finishing-only scope when the foundation isn't ready.
Can you build an in-law suite in our basement?
Yes. A full in-law suite includes a separate egress (often a walk-out door or an oversized egress window per code), a bedroom with a closet, a full bathroom with a shower, and a kitchenette with at least a sink and refrigerator. Local code in NJ and on Long Island governs whether the suite can be permitted as a separate dwelling unit or only as accessory living space — we'll confirm with your township during the design phase.
Do basements need a permit in NJ and NY?
Yes. Township building permits are required for framing, plumbing, electrical, HVAC, and any structural changes. Egress windows often require a separate permit if they're being cut into the foundation. We file every permit and manage every inspection — typically framing inspection, rough-in inspection (plumbing/electrical/HVAC), and final inspection.
What about ceiling height — can you finish a low basement?
Most NJ and NY building codes require a minimum 7-foot finished ceiling height for habitable basement space (sometimes 6 feet 8 inches under girders or beams). If the existing basement is below code height, we can sometimes lower the floor (underpinning), reroute mechanicals to recapture height, or limit the finish to non-habitable use (storage, mechanical room). We measure on the consultation and tell you what's permitable.
Can you build a walk-out basement?
Yes — most often in NJ suburban homes where the rear yard slopes away from the house. We cut a doorway into the foundation, install a structural header, build a frost-protected exterior stair if grade requires it, and waterproof the new opening. Walk-outs add to permit scope and typically add 2 to 4 weeks to the build.
What flooring works best in a basement?
Vinyl plank (luxury vinyl tile) is the safest default — water-tolerant, forgiving over uneven concrete, and warmer underfoot than tile. Engineered wood works above-grade but we don't recommend solid hardwood below grade because of moisture cycling. Tile and porcelain plank work with a heated-floor system underneath. Carpet is fine in a basement that doesn't take water — but we always recommend confirming the waterproofing scope first.
Do you do basement home theaters and entertainment rooms?
Yes. Pre-wired surround sound (in-ceiling and in-wall speakers), projector and screen mounting with conduit pathways, acoustic insulation in the walls and ceiling, dimmer-controlled lighting scenes, and a built-in bar or kitchenette if the brief calls for it. We coordinate with audio-visual integrators where the system is complex enough to need a dedicated specialist.
Reviews
5.0 ★ on Google. 5.0 ★ on Yelp. Basement reviews on the reviews page often mention how the waterproofing was handled, how clean the project stayed through long basement-finish timelines, and the AV integration on home-theater builds.
Ready to start your basement?
Call (862) 430-3655 or schedule a free consultation. Basements need an in-person walk — bring us in, we’ll bring a moisture meter and a measuring kit.