I've been mulling over this one .... I'd like to see the plumbing going outside rather than down though the extension downstairs.. ...so probably the extension housing the 2 ensuites, dressing area AND the family bathroom so you can increase the back bedroom in size and create a walk way to new family bathroom ... I think .... This is one to come back to on my coffee break later I think !!! As I still think the smallest bedroom doesn't benefit ? And in an ideal world I'd try to either make that bigger or repurpose it as the dressing room instead ?!

One option is to put on a two storey extension (because a loft conversion would lose a bedroom for the stairs). I think I would turn the garage into a utility/bootroom and then get an army surplus shed for the garden.

Thank you, Naturally Allard. I like the idea of putting some unique storage options under the stairs to make use of the space. Perfect for a busy house! Thank you, Jonathan. Here's the plan for the upstairs. Any suggestions would be most appreciated!

Since the kitchen is already of limited headroom, it is unlikely that there is any potential to combine it with the reception. But the current kitchen space may be better utilised as a study or a very small (but perhaps very appealing?) bedroom. I’d move the kitchen down into bedroom 2. Is that outside space at the back of the terrace, yours. Could you create an opening to it from the downstairs hall/kitchen.