Been there, done that, including the neighbor guy, but no uncle.
We got the couch at a thrift store, with nice new professionally done upholstery and hand-carved woodwork all around, all for $75! When we got home, we found it too big to fit through the door. Neighbor appeared (Yay, Bill!), and we found that the seat-and-back section could be unscrewed from the frame, leaving the parts just small enough to go in. Now that we know how, it will be coming along if we move.
You laugh, but I’ve been in a house where the stove jutted 3 full inches into one of the doorway entrances to the kitchen.
“…you don’t understand… I bake and I need 2 full-sized ovens… careful, that stove is hot…!” - It got said so often it should have been on a sign. 
When my lovely young wife and I first bought a house together it was a builder’s “spec” home, one where the builder shows off his style for future new development projects.
On our third walk through after making an offer my wife pointed out that a bathroom door was only 28". Not a problem for most bathrooms. It’s a common dimension. But this particular bathroom doubled as a utility room and would house the washer and dryer. It would have been impossible to get a standard washer and dryer into the room.
The builder who built over 100 homes missed that fact as did the engineer husband. The woman who liked the idea of doing the laundry on the main floor though was paying attention.
You need Dirk Gently.
I very carefully measured and researched our new fridge and got one that fit exactly under the cabinet you describe. Unfortunately, that was from the bottom of the cabinet with about an inch of clearance for cooling. 'I are smrt!" However, I did not measure from the bottom of the cabinet doors, so now we now have a very nicely painted door less cabinet interior (Frog Shape Tape) of ,I’m not making the name up, Peacock Duvet chevrons on white. SWMBO liked the colour so much that I had to paint our new end tables to match. I have unleashed an interior decorating monster all due a small measurement error. She’s now talking about the bathroom and our bedroom next, and this from a woman who up until this point couldn’t make a decision about an accent wall colour for five years.“It should be green blue, but not too blue or green, and it should have a hint of grey in it, or maybe we should look at a Burnt Orange…”
I learned this lesson when I bought a new washer and it had to go into the basement. The previous washer had been installed, then the previous owners HAD BUILT THE BASEMENT INTERIOR WALLS AND DOORS AROUND IT.
Plus, one door actually had the iron soil pipe partially blocking it.
With careful measurement and popping off the strike jamb, we were able to squeeze the new washer in. The next year I had to replace the iron soil pipe with a plastic pipe and the door wasn’t blocked any more. I got the new heater in without probs.