Just in case MapQuest is a little off here are the written directions:

My house is located in the NW Corner of US183 and RR620 Off of Lakeline Blvd.

From San Antonio take I35 N Thru Austin; take US183 N to Cedar Park. When the divided highway ends turn left (2nd light) on Lakeline Blvd, take the 2nd light left on Little Elm and my house is on the first corner on Wood Ridge Lane. The house with the fire hydrant. 934 Woodridge Lane.

MapQuest shows Little Elm Trail as a dead end, it isn't.