House floor plans?

I often wonder where a certain room in one house would have been in a previous house. For example, it's strange to think that someone stood by this year's bedroom door would have been stood in BB10s kitchen.

Or someone lay in BB9's bath would have been laid in someone from BB4's bed.

It would be interesting to compare floor plans from over the years just to see.

Perhaps it's just me, I'll get my coat :D