Commercial construction, renovation & facility maintenance
One contractor for every trade. Serving New Jersey, the Lower Hudson Valley, and the Philadelphia metro area since 1993.
- In business
- Since 1993
- Liability limits
- $2M / $4M
- EMR
- 0.98
- Workmanship warranty
- 5 years
- Service area
- NJ · NY · PA
You shouldn't need eight vendors to maintain one building.
Most facility directors are managing a painter, a drywall contractor, an electrician, a roofer, a paving company, and a handyman — each with separate insurance certificates, separate invoices, separate scheduling calls, and separate excuses when something slips.
Gemstar handles all of it. You contract with us. We hold the trade relationships, verify every subcontractor's licensing and insurance, coordinate the schedule around your operations, and give you one person to call.
One contract. One certificate of insurance. One invoice. One phone number.
What we do
Every trade a commercial property needs, under one contract and one point of contact.
Construction & finish trades
Interior and exterior painting, carpentry, drywall, acoustical ceilings, flooring, tile, framing, commercial doors and windows, selective demolition.
Renovations & tenant improvements
Office buildouts, bathroom and cafeteria remodels, full tenant improvement packages.
Exterior & building systems
Roofing, masonry, asphalt and paving, parking lot striping and sweeping, pressure washing, weatherproofing, electrical, plumbing, HVAC.
Facility maintenance
Dedicated crews on a quarterly schedule for painting touch-ups, repairs, and preventive maintenance across your portfolio.
Put a dedicated crew on your portfolio.
Our Facility Maintenance Partnership Program assigns a Gemstar crew to your properties in scheduled visit blocks each quarter — handling painting touch-ups, general repairs, and preventive maintenance before they become work orders.
You have a job to do. We’re here to make it easier, not harder.
Nobody’s job description includes chasing a contractor. Here is what working with Gemstar actually looks like.
Estimates back fast
You can’t plan around a contractor who takes two weeks to price a job. We walk the scope, price it, and put it in writing quickly enough to keep your timeline intact.
We answer, and we write it down
Calls and emails get a response right away — not eventually. Every scope, change, and decision is documented in writing, so nothing depends on what somebody remembers three months from now.
5-year limited warranty
Well beyond the industry norm. Most contractors stand behind their workmanship for a year or two. We stand behind ours for five, in writing.
Turnkey, start to finish
One contract, every trade, one point of contact. We coordinate the sequence, manage the subcontractors, handle the cleanup, and hand you back a finished space.
Built around your operations
Nights, weekends, and phased work in occupied buildings. Your tenants, staff, and customers shouldn’t have to notice we’re there.
We’re here for the relationship
We’re not chasing a single job. Most of our commercial work comes from clients who called us back, and that shapes every decision we make on site.
Trusted with buildings that can't close
We've completed projects for a Level I academic trauma center, a national hospital and behavioral health system, a Fortune 500 telecommunications provider, a national cable and broadband operator, and a national paint manufacturer's new-build retail locations.
Tell us what you're managing.
Send us a scope, or schedule a complimentary walkthrough. We'll come look at the property, ask questions, and give you a written proposal. No obligation.