A pair of brick Colonials in Lattingtown, commissioned in 1997 by a brother and sister and each with a pool and koi pond, have been listed separately for $5 million each and together as one property for $10 million.

“It’s sort of like a compound with one gated entrance,” says Connie Liappas of Douglas Elliman Real Estate, who is co-listing the property with Biagia Vaccara.

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The property has one six-bedroom house and one seven-bedroom house, each featuring granite floors and finished basements with media rooms, steam rooms, saunas and gyms. Each property also has an in-ground pool and a koi pond with a waterfall, while one has a tennis court and the other has a sports court. Each home has a four-car garage.

The property also has a chicken coop that holds up to 60 birds. The owners use it to gather fresh eggs. They are also sharing a garden between the properties to grow tomatoes, spinach, zucchini and other produce.

Combined there are 24 rooms and 14 acres. One house is 8,355 square feet and the other is 9,479 square feet.