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By Phil Garabo, licensed electrician and owner of All American Electrical Services. Last updated: October 2026.
A whole-house standby generator in Westchester County costs about $6,500 to $15,000 installed in 2026, and most homes land between $9,000 and $12,000. The price covers the generator, the automatic transfer switch, the pad, the gas or propane connection, permits and inspection. A 14 kW unit for a typical 2,000 sq ft home runs about $8,500 to $10,500.
Westchester homeowners searching for a home standby generator usually find national price ranges that leave out half the job. This guide breaks the number down the way we quote it: by generator size, by what is inside the installed price, and by the Westchester details that push a quote up or down. The prices below match our 2026 Hudson Valley generator cost guide.
Generators are sized in kilowatts (kW). The right size comes from a load calculation on your home, not from square footage alone. These are typical fully installed prices for 2026.
| Generator size | Installed price (2026) | Typical home and coverage |
|---|---|---|
| 10 kW | $6,500 to $8,500 | Essentials only: heat, fridge, well or sump pump, some lights and outlets. 1,000 to 1,500 sq ft. |
| 14 kW | $8,500 to $10,500 | Most of a typical 2,000 sq ft colonial or ranch, including HVAC and kitchen. |
| 18 kW | $10,000 to $12,500 | Larger homes with central AC, an electric range and a finished basement. |
| 22 kW | $11,500 to $14,000 | Whole-home coverage with room to spare. The most popular size we install. |
| 24 kW | $13,000 to $15,500 | 4,000+ sq ft homes, multiple HVAC zones, EV chargers or a pool. Often needs 200A or larger service. |
These ranges assume a straightforward install: a clear pad location close to the meter and gas line, a panel in good shape, and standard permits. Anything outside that shows up in the next two sections.
An honest generator quote is an all-in number. If a quote looks low, one of these items is usually missing and will come back as a change order.
A standby generator needs a permit everywhere in Westchester County. Permits are issued by your city, town or village, not by the county, so Yonkers, White Plains, New Rochelle, Greenburgh, Yorktown, Cortlandt, Bedford and the rest each run their own building department with their own fees and forms.
Most installs need two permits: an electrical permit for the transfer switch and panel connection, and a plumbing or gas permit for the fuel line. The electrical inspection exists for a serious reason. A generator connected without a proper transfer switch can push power back onto the utility line and injure a lineworker trying to restore service.
Placement rules matter too. Generators generally need to sit at least five feet from windows, doors and vents, about 18 inches off the house, on a level pad. Some Westchester municipalities also set property line setbacks or noise limits, which is worth knowing before the unit is ordered. We pull the permits and meet the inspector as part of every job. For a broader look at how permits work, see our electrical permits and costs guide.
These two items explain most of the gap between two quotes for the same generator.
| Item | Typical added cost | When it applies |
|---|---|---|
| Whole-house transfer switch | $800 to $1,400 | Powers the entire panel. Cleanest setup. |
| Managed or essentials transfer switch | $400 to $700 | Powers selected circuits. Lets a smaller generator run more of the house. |
| Natural gas line extension | $400 to $900 | Home already has gas service. |
| Propane tank and line | $2,500 to $4,000 | No gas main at the street. Common in northern Westchester. |
| Panel or service upgrade | $2,200 to $4,500 | 100 amp service, or an old or full panel that cannot safely take the generator. |
| Annual maintenance | $250 to $400 per year | Oil, filters, plugs, battery check and load test. |
In the southern half of the county most homes have natural gas, so the fuel connection is simple. Further north, around Bedford, Pound Ridge, North Salem, Lewisboro and Somers, many properties have no gas main and run on propane. Propane works well, but the tank size decides how long you can run during a long outage, so size it for the outage you are planning for. If your home is still on 100 amp service, our panel upgrade cost guide covers what that adds.
The on-site work usually takes one to two days. The full timeline from signed quote to a running generator is typically 4 to 8 weeks. Permit approval, the gas work and inspection scheduling take longer than the install itself. Panel upgrades or a propane tank can add another week.
Fall and early winter are the busiest season, because most people call after the first big outage. If you want a generator in place before nor'easter season, start the process early.
Not sure you need a standby unit at all? Our standby vs portable generator comparison lays out when a portable and a transfer switch is the better value. To see the areas we cover, visit our Westchester County electrician page.
Want a real number for your house? Call (845) 786-3143 or request a free estimate. We come out, run the load calculation, check your fuel options and panel, and give you one written price including permits.
Most whole-house generators in Westchester County cost $6,500 to $15,000 installed in 2026, with most homes between $9,000 and $12,000. The price depends on generator size, the transfer switch, natural gas or propane, permits and whether your panel needs an upgrade.
Most Westchester homes need a 14 kW to 22 kW generator. A 14 kW unit covers most of a typical 2,000 sq ft home, while a 22 kW unit runs the whole house including central air. The right size comes from a load calculation on your actual home.
Yes. Every municipality in Westchester County requires a permit for a standby generator, usually an electrical permit plus a plumbing or gas permit. Permits are issued by your city, town or village, so fees and forms vary. Your installer should pull them and meet the inspector.
Yes. Propane is common in northern Westchester, where many homes have no gas main. A propane install adds a tank and buried line, typically $2,500 to $4,000, and the tank size decides how long the generator can run during a long outage.
The on-site work usually takes one to two days. The full process from signed quote to a running generator typically takes 4 to 8 weeks because of permit approval, gas work and inspection scheduling.
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