Venice, California. This new three-bedroom home is wired with Sonos surround sound, Ring security, and a three-zone temperature system. It also features a gourmet kitchen and a master suite with a second level including a lounge, wet bar, dual closets, sauna, and spa bathroom.

A roof deck provides an outdoor living room and al fresco dining, and the beach is just blocks away. $3,495,000. Sally Forster Jones, SFJ Group, (310) 579-2200.

Upper Saddle River, New Jersey. Constructed by a builder as his personal residence, this seven-bedroom home is completely automated. Its Crestron system interfaces with 24 HVAC zones, audio and video systems, and security and lighting, through multiple on-wall and mobile controls.

The landscaped backyard with automated lighting features a pool, firepits, an outdoor kitchen, and a 16-speaker music system. $4,988,888. Joshua Baris, Coldwell Banker Residential Brokerage, (201) 461-5000.

Quogue, New York. This six-bedroom modern minimalist house on eastern Long Island has a great room with a three-sided fireplace and glass floating stairs; a kitchen with a 16-foot island; and a Lutron smart-home system, Sonos wiring, Ring doorbell, security cameras, and whole-house generator.

The 1.1-acre property includes a glass pool house, a saltwater pool and spa, and a dock on Shinnecock Bay. $5,750,000. Marcia Altman, Brown Harris Stevens, (631) 288-5004.

Koloa, Hawaii. Set on Kauai's south shore in the Kukui'ula resort community, this four-bedroom, custom-furnished house was inspired by the designs of mid-century Hawaiian modernist Vladimir Ossipoff.

Hale Ike Mala, or "Love of the Garden," is fully wired with Alexa, LED lighting, 12 Lumos solar panels, and a Tesla Powerwall 2 in the garage. Retractable glass walls open to a large covered deck with ocean views. $6,500,000. Kukui'ula Realty Group, (808) 754-0234.

Washington, D.C. Architect Robert Gurney combined two units to create this bright four-bedroom co-op in the Watergate West building. Smart features include motion lights, nine HVAC zones, windows with power shades, and a kitchen with an induction range.

A wraparound terrace affords views of the Potomac River, Key Bridge, and Georgetown waterfront. $3,999,900. Ron Mangas Jr., TTR Sotheby's International Realty, (703) 964-7911.

Wilmington, North Carolina. Built in the fall of 2018, this three-bedroom cottage is wired with a Ring doorbell, smart light switches, and Echo Dots mounted for verbal commands throughout.

The house also features an open living room and kitchen area with stone kitchen counters, front and back porches, a one-car garage, and a landscaped front lawn, and is 10 minutes' drive from the beach. $324,500. Kirby Keene, BlueCoast Realty Corp., (336) 399-2065.