Other must-have features in singleton spaces: a large steam shower, a media room with a big-screen television, and sound speakers in every room "even in obscure places, like the broom closet, " says designer Lori Dennis, who has worked on several places for singles in Los Angeles and Lake Tahoe in recent years.

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To the bottom floor of his historic Victorian, Firestone added a gym, a mini-spa, a steam room and a deluxe shower.

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There are changing rooms and shower facilities, even a steam room.

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The room is a combination steam bath, "rain" shower and "waterfall" area for rinsing.

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The home begins with an enormous grand entry with black crystal chandelier and includes a gourmet kitchen with high-end appliances, enormous living room with a 20-foot wall of windows and a master suite with steam shower, dry sauna and whirlpool bath.

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