We had new bits added to the house about 6 years ago, so that things would (possibly) work better and the marquis could have a new, bigger kitchen. The net effect has been to cause me to spend more time in one room -- my writing space is in our bedroom, which is sort-of two storey. And it's built in. Changes tend to be to stuff -- new chair last summer, for instance -- rather than for layout. But we don't tend to move things around much because we have various bits of rather large furniture donated to us by the marquis' parents, and limited places to put them (due to the very large number of bookshelves and bookcases).
On the other hand, the marquis now has his forge set up, and the house is no longer full of things like the forge bed, the anvil, the huge table, all the tools etc, which came indoors for most of last year while the workshop was a-building. That is a change I am very pleased with.