Super-luxury estates don't just come with swimming pools and tennis courts these days, but also boast elaborate home theaters and special controls that can unlock doors or adjust thermostats even if you're halfway around the world.
"I'll walk into a dark house with a buyer, press one button and turn on the lights, the music and the home theater downstairs," says Debra Johnston, an Atlanta real estate agent who specializes in high-end properties. "The whole house is ready to go -- and the client can see that."
More and more high-end properties feature such "smart-home" technologies - professional-grade audio/video systems, plus lights, thermostats, window shades and more that you can control with an Apple iPad or other smart device.
Read on for five of the poshest smart homes.
List price: $5.9 million
Listing agent: Cindy O'Gorman, Ebby Halliday Realtors, 972-715-0190
This six-bedroom estate's elaborate media room features a domed ceiling that depicts thousands of twinkling stars - and even an occasional meteor streaking across the sky.
There are also eight reclining chairs, as well as custom-painted murals depicting a panoramic view of Florence, Italy.
As for electronics, the media room boasts a Sony (SNE_) video projector, a 147-inch screen, a 7.1 surround-sound Super THX speaker system, four DSS satellite receivers and more.
The home's state-of-the-art electronics also include remote-controlled shades, lights and other amenities, as well as built-in wiring for audio, flat-panel TVs and high-speed Internet.
Located in the exclusive Willow Bend Place neighborhood of Plano, Texas, just outside Dallas, the lakeside spread also includes eight fireplaces, a waterfall and a saltwater pool/spa.
Oceanfront estate, Dana Point, CA
List price: $23 million
Listing agent: John Stanaland, Hom/Sotheby's International Realty, 949-342-3635
Located on the Pacific Ocean some 60 miles southeast of Los Angeles and 10 miles east of Catalina Island, this Tuscan-style estate boasts remote-controlled lights, drapes, audio/video and more.
A Crestron control system runs the built-in 60-inch built-in flat-panel TV and surround-sound system in the home's great room, as well as two flat-panel TVs and a ticker-tape display in the "sports room."
You can also control the property's security system/video cameras remotely, as well as a 15-zone audio system that features built-in speakers inside and out of the six-bedroom home.
But the estate's coolest feature is probably its home theater, which boasts a professional-grade video projector, a 160-inch screen and 11 reclining seats.
Located in a gated enclave next to a golf course and a Ritz-Carlton five-star resort, the spread also features 10 bathrooms, four fireplaces, two garages, two laundry rooms and a 1,500-bottle wine cellar.
Clock tower penthouse, Brooklyn, NY
List price: $19 million
Listing agent: Michele Kleier, Gumley Haft Kleier Inc., 212-371-2525 ext. 350
This three-bedroom penthouse doesn't have the world's most elaborate electronics, but is in one of the coolest settings around -- a 98-year-old former factory's clock tower.
Spanning the top three floors of Brooklyn's famed 1914 Clock Tower Building, the condo boasts one-of-a-kind windows carved out of the structure's four huge clocks (which still function).
As for electronics, the penthouse has 12-speed CAT wiring and a Crestron system that controls lighting, heat, air conditioning, audio/video and shades.
Other amenities include 3.5 bathrooms, a private elevator, 16- to 50-foot ceilings and 24-hour concierge service.
The building is in Brooklyn's up-and-coming "Dumbo" area, which stands for "Down Under the Manhattan Bridge Overpass."
Tuxedo Park estate, Atlanta, GA
List price: $11.5 million
Listing agent: Debra Johnston, Atlanta Fine Homes Sotheby's International Realty, 404-312-1959
This newly built 2-acre estate features all sorts of cutting-edge technology, from a home theater that cost nearly $1 million to lights, thermostats and more that you can control remotely.
Virtually every room in this seven-bedroom/13-bathroom home is connected to central music and security systems and comes prewired for CAT5 cable, PBX phones and high-speed Internet access. There's also a high-tech geothermal heating/cooling system and super-efficient thermal-pane windows and icynene insulation.
But it's the property's home theater that really shines.
Outfitted with 12-seat German-made leather seats, the space boasts a $160,000 Digital Projections Pro-Cinema Commercial Projector, a 171-inch Stewart film screen and a $17,000 Snell surround-sound speaker/subwoofer system.
Located in the Tuxedo Park section of Atlanta's exclusive Buckhead neighborhood, the estate also features four fireplaces, a 1,500-bottle wine cellar, a 70-foot geothermal-heated pool, a custom kitchen and an outdoor auxiliary kitchen for entertaining.
List price: $10.9 million
Listing agent: Ralph Secino, William Raveis Real Estate, Mortgage & Insurance, 508-776-3323
This 7.6-acre estate's smart-home technology runs not only all systems in its four-bedroom main house, but lights, heat and the like in its one-bedroom carriage house as well.
The system controls the home's built-in audio/video, 14 flat-panel TVs -- even the temperature in the estate's massive wine cellar.
Located on a quiet cul-de-sac just steps from the Atlantic Ocean, the 4-year-old spread also has eight bathrooms, four fireplaces and an infinity-edge pool. It's offered for sale fully furnished with antiques and other upscale amenities.