A library with floor to ceiling bookcases and ladders to access, with a hidden door. Office within the library, with a view of the garden (an area cordoned off and inaccessible to small people). A studio area somewhere in there.

An attic for storage.

A room for a live-in nanny. With a live-in nanny (who likes doing laundry...).

A great big chicken coop with run that has the easy to clean access (for my DDs, who are responsible for the chicken cleaning).

Lots of space for the playground equipment and cubby house, not seen from the street. Lots of native trees.

A beautiful vegetable garden with raised beds and a path system laid out around them.

NO POOL! But maybe a very kind neighbour with a heated pool and a gate in our joined fence to come in whenever we like. In return, I'll grow them vegies.

Lots of skylights, great big solar power system on the roof, huge water tank hidden away and all the eco-friendly features you can possibly stuff into the house.