What would be tricky to do in your current home?

[Spinneret]

get in if you were in a wheel chair
have anyone else move in

 

[Lord Manhammer]

Install central air
Go from one end to the other without going outside (ha! figure THAT one out!)

 

[SpaceMan5]

Installing the indoor golf simulator upstairs in the man cave. Would want to but it's in the garage for now.

 

[TCRAIG]

Grow grass in the backyard - there’s too many trees
Also add a screen porch - the roof line isn’t right