the best known celebrities have been forced to build tall walls surrounding their lots, except in a few cases. I walk my dog around a tiny lake every day in a community filled with working actors. (from 16 year old 'rock stars' to middle aged folks starring in two or three series at a time.) The homes around the lake were built in the 1930s, but because these people have more money than god, the homes have been heavily re-done many times over. But if you get one block or so away from the lake, there are a handful of old timber frames (the traditional infill variety) that look unchanged from the 30s; including some that are well known to have been celebrity owned.
I don't see any of these people lending their names to the timber frame biz; their managers tightly restrict the use of their names / images except for serious charities (haiti, katrina) or mega-dollar ad campaigns. No low key freebies....
Just for one brief 'name-drop'..... George Lopez moved from a wonderful old timber frame in this neighborhood to a walled compound with an old southwest Mission type home. The timber frame is just a block from his current home, but the security level has gone from wide open corner lot to 'the cameras are watching you before you get anywhere near the big wall." If you are really interested in checking out celeb timber frames, your best bet might be timber frames formally occupied by celebs. Their current homes are designed so they (or their security staff) can see you, but you can't see them, or their homes.