The AP's Sweet Dog Suites reports on builders adding "doggy suites" to new houses. Standard Pacific Homes is offering a pet suite option in 27 of their developments across the country.
Key quote on the high end pet suite, which is shown in the picture below:
The most lavish suite is a 170-square-foot pet paradise with a step-in wash station, handheld sprayer and leash lead; tile walls and floors; a designated drying area with a commercial sized pet dryer; a water station; automated feeders; a large bunk-style bed; cabinets for toys, treats and food; a stackable washer and dryer; a French door that opens to a puppy run; and a flat-screen television set.
The cost of this dog suite option is roughly $35,000. And although this sounds a bit lavish to me, I have to admit having a doggie mud and washing room would be useful. Also, it only seems fair that your "pet partner" has their own room.