Our very first hutch was one with a run underneath, which was a good starter home, but the run was only 6ftx4ft so it wasn't really big enough. We've since upgraded to a playhouse with a small tunnel leading to a 12ftx6ft run. It's worth mentioning that the run is to the side of the playhouse though, so it runs along the fence line to make the best use of the space.
I don't know if you've looked here
https://homeandroost.co.uk/product-category/6ft-rabbit-hutches/ but they have some good options if it's a hutch / run you're after.
'Slightly controversially' most of our rabbits have been from gumtree (I say controversial because it's riskier potentially that the rescue route that many choose on here). But if you go into it with your eyes wide open then it is especially rewarding. Obviously it means you are responsible for vaccinations / neutering and have no back up if things go wrong.
What it has meant though, is that I've been able to rescue buns from very poor conditions and change their lives. Those that haven't been lucky enough to make it to a rescue and are likely to be passed on with their existing accommodation.
Obviously the rescues requirements are the minimum and I'm not saying that the rabbits shouldn't have that and ours do. But we've been able to constantly improve and extend things over time.
(I'll probably get flamed for saying so oops
) x