An 84 yr old house comes with 84 yrs old problems. I wish I could show you exactly how much I've spent redoing things to my liking.
I had to replace the HVAC system as the gas furnace was almost at the end or it's life (over $7K USD for that)
I've installed a mini split system to heat and cool this large backroom which is my bedroom. It is at the rear of the house and was never connected to the main system until just before I bought the place, the idiots who "flipped" the house installed a duct to get back here, which was too small and barely made any difference, especially when it was hot.
$6K USD for that.
I put in a GATE, where the idiots had just stuck three poles in the dirt (no cement to anchor) and two wooden panels. I paid for a GATE that is nice to look at from the street and 100 ft of privacy fence ($2.5K USD for that)
I've remodeled my bathroom, I think that was $300 for the worker who came to help, don't remember what I paid for the wall board and paint, but it wasn't a whole lot.
I still have a kitchen that is nice to look at but has no WALL CABINETS to store dishes and canned goods etc... still thinking about what I want to do there.
Now, $3,500 for this concrete work, another $1300 for the metal carport (weeks away)

The old saying that "a house is a hole in the ground into which you pour money" is certainly true
Thanks for commenting @precab