It's under 2 miles....and 2 traffic lights.
The answer is, it really depends on which part of WDW you're going to. I've made it from our home to Animal Kingdom in 2-3 minutes (it's the closest park). I forgot our park tickets at home at Epcot one trip, and I timed it...from the parking lot of Epcot, to the front door of our WHR townhome, I made it in 7 minutes, now granted, I caught both of the 2 traffic lights green.
MGM is closer, MK is slightly further, perhaps 12 mins.
WDW is HUUUUUGE, the property is larger than the island of Manhattan, so distances can be a little deceiving!
That being said though, Windsor Hills is VERY close to WDW, you really can't beat it for location, it's brand new, and a gorgeous resort!