AWARD WINNING: ANGIE’S LIST SUPER SERVICE AWARD (14 YEARS CONSECUTIVE)

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Commercial Renovation & Construction in Nassau County On Time, On Budget

Commercial renovation on Long Island has different stakes than residential work. Your business is losing revenue every day the job isn’t done. Your customers walk in and form an opinion before a single employee says hello. Getting the work done right and on schedule isn’t just a preference — it’s a business necessity.

OZ General Contracting has completed commercial renovation and construction projects across Nassau County since 1976. Retail fit-outs, office renovations, restaurant builds, gas station construction — we’ve worked in operating environments where minimizing disruption matters, and in vacant spaces where speed of delivery is what gets your business open.

Retail Store Fit-Outs

Building out a retail space in Nassau County means navigating local building codes, fire marshal requirements, and sometimes village-specific regulations before a single wall goes up. We’ve done retail fit-outs across Long Island and know how to move quickly through the permit process without producing work that fails inspection.

A full retail fit-out typically includes: demolition of the existing shell, new partition walls, storefront framing and glazing, flooring, ceiling grid or custom ceiling, lighting plan and electrical rough-in, HVAC coordination, custom display fixtures and millwork where needed, and signage mounting prep.

We also install our in-house CNC cabinetry and millwork in retail environments display cases, reception counters, shelving systems, and custom fixtures built to spec.

Retail services include:

  • • Vanilla box to turnkey fit-out
  • • Storefront and glass entry work
  • • Custom retail millwork and display fixtures
  • • Flooring — tile, LVP, hardwood, polished concrete finish
  • • Lighting design and installation
  • • ADA compliance and accessibility upgrades

Office Renovations

Office renovation in Nassau County often happens in stages especially in occupied buildings where you can’t shut down the whole floor at once. We’ve done phased office renovations in active Nassau County commercial buildings and understand how to sequence work around a client’s operations.

Common office renovation scope: reconfiguring open-plan layouts, adding or removing private offices and conference rooms, upgrading finishes (flooring, ceilings, lighting), new reception and kitchen areas, and electrical and data infrastructure coordination.

Office renovation services:

  • • Partition wall construction and removal
  • • Open-plan and private office reconfiguration
  • • Reception desk and custom front-of-house millwork
  • • Break room and kitchenette build-outs
  • • Flooring replacement and ceiling upgrades
  • • Lighting and electrical coordination

Restaurant & Food Service Construction

Restaurant construction requires contractors who understand the mechanical, plumbing, and electrical requirements of a commercial kitchen — exhaust hood sizing, grease trap installation, fire suppression systems, health department compliance, and the coordination between all those trades.

We’ve built and renovated restaurant and food service spaces in Nassau County, managing the permitting process through Nassau County’s health and building departments. We work with your equipment suppliers, hood contractors, and mechanical engineers as one coordinated team.

Gas Station Renovations

Gas station renovation is specialized commercial work: canopy replacement, forecourt reconstruction, interior convenience store fit-out, and underground storage compliance work. OZ has direct experience with gas station projects on Long Island and can coordinate with environmental contractors, equipment vendors, and Nassau County permitting on your behalf.

Why Commercial Clients Choose OZ

Most commercial renovations on Long Island are handled by general contractors who sub out most of the work to a rotating cast of tradespeople. We use our own licensed crew for the core work — carpentry, framing, cabinetry, finish work — and maintain direct relationships with the electricians, plumbers, and HVAC contractors we bring in for each job.

That means one point of contact. When something comes up on-site and something always comes up on-site — there’s no finger-pointing between subs. Our project manager handles it.

What every commercial project includes:

  • • Dedicated project manager, on-site daily
  • • Full Nassau County and Suffolk County permit management
  • • Written schedule and budget with change-order transparency
  • • Coordination with all trade contractors
  • • Certificate of Occupancy or CO amendment filing where required

Frequently Asked Questions

Do you work on commercial projects while the business is still operating?

We have done phased commercial renovations in active Nassau County offices and retail environments. It requires careful scheduling, dust containment, and sequencing the work so your operations aren’t shut down. We assess feasibility at your consultation and build the project schedule around your business needs.

In cases where daytime work isn’t possible, yes. This is common for restaurants and retail spaces where daytime hours are the business’s peak period. Off-hours work is discussed and priced at the estimate stage.
Yes. We manage the full commercial permit process — building permits, fire marshal review, health department coordination for food service projects. Nassau County commercial permitting is more complex than residential, and we’ve navigated it many times. We handle it as part of the project scope.
Our commercial work ranges from a single retail fit-out of a few thousand square feet to multi-space commercial renovation projects. We’re not a large national GC — we’re a Long Island contractor that brings the same ownership-level attention to commercial work that we bring to residential. If your project is in Nassau or Suffolk County, call us and let’s see if we’re the right fit.
Yes. OZ General Contracting holds Nassau County Home Improvement License #184594, is licensed in Suffolk County, and carries full general liability and workers’ compensation insurance. We are BBB A+ accredited since 1991 and have earned the Angie’s List Super Service Award for 14 consecutive years.

Yes. We can provide references from commercial clients in Nassau County. Call us at 516.826.8054 or email cs@ozgc.com and we’ll connect you with previous commercial clients who can speak to our work.