West Babylon, 775 Carlton Rd., $375,000

Having experienced a lengthy power outage caused by superstorm Sandy, the owners of this nine-room Colonial decided to be prepared in case of another disruption of electric service. They purchased a Generac GP Series 7500 E generator, which can run 10 circuits: four for 20 amps and six for either 15 amps or 20 amps.

Although the house did not experience any water intrusion from the storm, the generator has the capability to operate two sump pumps in the basement, where there are also French drains. Hooked up to the furnace and hot water heater, the generator can also power the master bedroom, as well as the kitchen lights, refrigerator, microwave and television.

Other features of the home include a new roof and siding and a new central air-conditioning system. There are four bedrooms, two bathrooms and a half-bath. Outside, the newly fenced 80-by-100-foot parcel has a deck covered by a canvas awning. Taxes are $13,240. Jerry O'Neill, Coldwell Banker Harbor Light, 631-842-8400.

Sea Cliff, 12 Leonard Place, $925,000

Since this updated nine-room Colonial is equipped with a 100-amp, gas-powered Generac and has gas heat, 75 percent of the house can be operated in the event of a power outage. The generator, in part, runs the refrigerator and the central air-conditioning, while gas heat allows for the use of hot water, the gas stove and oven. Other features of the home include a new roof and Low-E double-pane glass windows. Oak floors, moldings, recessed lighting and a fireplace are among the appointments.

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Recently renovated, the kitchen is outfitted with granite countertops and stainless steel appliances. There are four bedrooms, two full baths and two half-baths, as well as a finished basement.

The property -- 100 by 100 feet -- is landscaped with specimen plantings, a Trex deck with a hot tub and an outdoor kitchen. In the front, there is a paver driveway and a two-car garage. Taxes are $14,576. Eric George, Distinct Homes of Long Island, 631-421-3911.

Northport, 121 Waterside Ave., $465,000

When the power goes out, the Generac Guardian 7kW generator kicks on to keep this nine-room Colonial up and running, including lights, heat and the refrigerator. And when service is restored, the generator turns off. Set on a .26-acre parcel with new retaining walls and patios, the updated home features both wood floors and carpeting, moldings and recessed lighting.

The layout includes an enclosed front porch, an updated eat-in kitchen with granite countertops, stainless steel appliances and a center island, as well as three bedrooms, two updated bathrooms and a half-bath, also updated. Village shops, restaurants, the harbor and the beach are nearby. Taxes, including an additional village tax, are $6,531. Michele Cameron, Coldwell Banker Residential Brokerage, 516-993-0255.