A huge porch/conservatory on the back door for warmth, boots, lounging, etc.
We inherited a conservatory on one side, facing north, well, more of a covered yard really, between the house and the boundary wall, so this is where the freezer, beer fridge, etc are kept. It is a useful storage area, but you couldn't put furniture in it and lounge about…
The downstairs bathroom installed.
It won't have a bath, just a shower, loo and basin. Then we can wash the dogs more easily for a start. I bough the most lovely lilies talavera loo and basin second hand for a fraction of what they cost new, and I can easily match up a blue or green shower tray and wall panels. They are in storage and I'm itching to get them in.
The shed roofs replaced.
We have a run of sheds in the yard, all of which leak. We burn wood to supplement our oil (rural, no gas) and need them for storage, not to mention tools, bikes, etc.
My additional unlimited money wishes would be:
A loft extension, with a secret star gazing space in the gully between the two roofs
A posh new drive, maybe brick or stone.
Replacement double glazed windows for the ones we couldn't afford first time round. We matched up the look of them and just replaced the actually rotten ones, but there are about six more that I wish we could have done as well.