Just about everything on the inside or the outside of a house can be rebuilt or replaced. An old house can have a new roof and new windows too.
There are old houses and there are old houses. Sometimes home buyers are intimidated by the house that was built in the 1890’s when it is the house that was built in the 1980’s, or 1990’s. that they should be concerned about.
Houses built in the late 1990’s may still have the original roof. Replacing a roof is expensive and some only last 20 years. A 20-year-old forced air furnace is a scary thing. Plumbing doesn’t wear out as quickly but I know from experience that plumbing for toilets and faucets and valves wear out and they can be expensive to replace.
Our home was renovated in the late 80’s and we have replaced almost every faucet and valve in the house and upgraded toilets and replaced a few sinks. The plumbing, in general, is in much better shape than what I find in houses that are almost a 100 years newer. The fixtures and plumbing in the kitchen are just a couple of months old.
Our furnace is now three years old and the water heater is about six years old.
I strongly encourage home buyers to have a complete home inspection before buying a home of any age. While house hunting pay close attention to the age of the systems inside and outside the house rather than the age of the whole house.
If a home as been newly renovated ask for warranties on the work, make sure permits were pulled and that they have been closed. Local government entities that rehab and sell houses will sometimes refuse to provide any kind of warranty on the work making a complete home inspection even more important.
Most of the housing in St. Paul is old. There isn’t a lot of new construction and it is very expensive. Houses are definitely reusable and upgradable. The oldest houses in St. Paul were built without plumbing or electricity. That was all added later.
Also, see Younger buyers want technology Homes can be retrofitted with smart home technology.