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Interior Renovations on Long Island Custom Millwork, Flooring & Full Room Work

Most homeowners focus renovation budgets on kitchens and bathrooms. But the living room, dining room, hallways, and bedrooms are where your family spends the most time — and on Long Island, they’re also what buyers notice when they walk in the front door.

OZ General Contracting does interior renovation work beyond the kitchen and bath. We handle custom millwork, flooring replacement, full room renovations, built-in cabinetry for living spaces, and complete interior transformations for homes that need more than a coat of paint. The same quality we put into a luxury kitchen goes into the rest of the house.

What Makes OZ Different

Custom Millwork & Built-Ins

Millwork is what makes a room look finished or not. Baseboards, crown molding, window casings, door surrounds, chair rail, wainscoting, coffered ceilings. When the millwork is right, the room reads as put-together regardless of what furniture is in it. When it’s wrong or missing, no amount of furniture covers it.

We design and fabricate custom millwork in our Bellmore shop using the same CNC equipment we use for cabinetry. Every piece is built to your room’s exact profile and painted or stained to match your chosen finish.

Millwork and built-in services:

Flooring

Flooring is the single highest-impact upgrade you can make to a room it’s what every visitor looks at the moment they walk in. We install hardwood, engineered hardwood, luxury vinyl plank (LVP), tile, and stone flooring for complete renovations and single-room replacements.

For Long Island homes with older parquet or narrow-strip hardwood that can still be saved, we also do refinishing. If the floor is structurally sound, refinishing at a fraction of replacement cost often produces a better result than what’s available in mid-range replacement materials.

Flooring services:

Living Room & Dining Room Renovations

A living room renovation with OZ typically involves some combination of: new flooring, custom millwork (trim upgrade, coffered ceiling, fireplace surround), built-in bookshelves or an entertainment wall, new lighting plan, and sometimes reconfiguring the room layout for open-concept flow to the kitchen.

Dining room work commonly includes wainscoting or board-and-batten wall treatments, upgraded trim, new chandelier and lighting positions, and flooring that transitions properly to adjacent rooms.

These are not complicated renovations in terms of permits most interior work doesn’t require them unless you’re moving walls or plumbing. But they dramatically change the feel of a home, and they’re the kind of work that photographs well if you’re planning to sell.

Lighting Design & Electrical

Lighting is often the last thing homeowners think about in a room renovation and it has an outsized impact on how the finished space actually looks and feels. We work with recessed lighting layouts, pendant placements, cove lighting, under-cabinet lighting in built-ins, and dimmer system planning.

We coordinate all electrical work through licensed electricians on our crew. When your interior renovation includes a lighting redesign, it’s planned at the beginning of the project — not added as an afterthought when the walls are already closed.

Flooring services:

Frequently Asked Questions About Kitchen Remodeling on Long Island

What types of interior renovation projects do you take on?
Living rooms, dining rooms, home offices, hallways, entryways, mudrooms, and bedrooms. We do full gut renovations of interior spaces as well as targeted upgrades — new trim package, new flooring, new built-ins. If it’s inside your house and not a kitchen or bathroom, we can handle it.
Yes. Matching existing profiles is something we do regularly on older Nassau County homes where the original millwork is detailed and worth preserving. We take profiles from your existing trim, reproduce them in our shop, and install new pieces that match what’s already there.
Most cosmetic interior work — flooring, millwork, built-ins, painting — doesn’t require a permit. Work involving moving walls, adding electrical circuits, or changing plumbing does. We assess what’s needed for your specific project at your consultation and handle any required permits.
A living room renovation involving flooring, new trim, and built-in shelving typically takes 2 to 4 weeks. A more involved project including structural changes, new lighting plan, and full millwork takes 4 to 8 weeks. We provide a firm schedule at your estimate.
Yes. If you’ve already worked with a designer or architect and have drawings or specifications, we can build to those. We’re experienced working from existing plans and coordinating with other professionals involved in a project.
Yes. We do load-bearing wall removal with proper structural engineering and permits. Open-concept layouts that combine kitchen, dining, and living rooms are one of the most common interior renovations we handle on Long Island, particularly in 1960s–1980s colonials and split-levels where the original floor plan was more compartmentalized.