Bellmore, 220 Lee Place, $699,000

"Every detail of this home is high-end and beautiful," says agent Cindy DiBiasi of Douglas Elliman Real Estate, including its stately spiral staircase. The staircase begins in a family room with a fireplace that connects to a billiard room with a wet bar, Viking refrigerator and dishwasher.

After ascending the stairs, you'll find the home's open floor plan, which features vaulted ceilings in the living room and formal dining room and a kitchen with a modern design, granite countertops and a sleek center island.

The three-bedroom high-ranch, built in 1991, offers three spa baths with radiant heat, including one with a steam shower. There's a bulkhead and multilevel decking on the 45-by-75-foot property, which is situated on a canal.

Taxes are $18,893. Tina Canaris and Cindy DiBiasi, Douglas Elliman Real Estate, 516-524-1954 or 516-695-8462.

Great Neck, 7 Hill Park Ave., $468,000

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This Hill Park Avenue duplex has the feel of a sleek Manhattan apartment, says listing agent Sherry Robin Modlin of Douglas Elliman Real Estate. The silver spiral staircase is situated in the combination living room-dining room on the first floor, where there's a granite kitchen, master bedroom, master bathroom and terrace.

The staircase leads to the second-floor bedroom and bath. Modlin's co-agent, Lauren DeSantolo, says there's a bright beautiful view of the apartment's open floor plan from the top of the staircase. The home's amenities include 30-foot vaulted ceilings with skylights, a marble fireplace and hardwood floors.

The co-op, built in 1984, is pet-friendly and comes with a dedicated spot in the parking garage. The maintenance charges, which include taxes, are $1,450. Sherry Robin Modlin and Lauren DeSantolo, Douglas Elliman Real Estate, 516-477-7200 and 516-426-9242.

Massapequa, 145 Ocean Ct., $1.395 million

The spiral staircase in this waterfront Contemporary leads to a "secret" room, says agent Alexandra Parisi of Daniel Gale Sotheby's International Realty. Parisi says the homeowner's children made the area their hideout and play space, but it could be an office, den or place to sit and read.

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From the top of the staircase Parisi says your eyes meet the lofted ceilings of the living room and formal dining room. There are "picturesque water views" from nearly every room in the house, Parisi says, including a private deck off the master suite. And the entire length of the open floor plan is accented by windows or sliding glass doors.

The four-bedroom home has three full baths and offers an eat-in kitchen with a breakfast bar. The 42-by-135-foot property features an 85-foot pier, 40-foot floating dock and bulkhead overlooking Massapequa Cove. The 1956 home is "tucked away on a private cul-de-sac," says Parisi, and comes with beach rights.

Taxes are $24,398. Alexandra Parisi and Athena Menoudakos, Daniel Gale Sotheby's International Realty, 516-427-6878 and 516-316-4955.