Yes that's the scam. Magically the houses are not held to the same code. Got mine, fuck everybody else.
Old houses are held up to the new code when they are renovated, because updating old houses to the new code frequently requires rebuilding substantial portions of the house to comply with new requirements. It's not about "fuck everyone else." It's about recognizing that the extensive work that would be required to comply with substantially safer modern codes is best done when substantial construction work is already planned to be performed.
Commercial buildings are held to up to new codes whenever ownership, or tenancy, changes hands.
OK but if I build a new house to the old code then I also will need substantial work to rebuild it to bring it into compliance. So I could use the same logic I shouldn't have to. Safe enough for them, safe enough for me.
>No, houses are held up to the code that applied when they were built,
Again, that's the scam. I'll build my house to one code and then vote to make the code harsher for the next guy to up my property value. If it's impossible to build a new house as economically as mine, mine's now worth more than it would have been.
It's not reasonable to build with GFCI outlets in the bathrooms in 1956. It's not reasonable to build without them in 2023.
Most places have a very limited enforcement appetite for existing construction. If it was safe and current when built, it's fine enough. Exceptions include adding smoke and carbon monoxide detectors --- but they're not that expensive to buy or install; and sometimes you can't get a home insured if it had certain electrical panels with poor safety records, and knob and tube wiring is sometimes frowned upon (but really, it's not that bad if it hasn't been altered; just a lot of houses where they added too much load on the existing knob and tube and overloaded wiring is never good). That doesn't mean you should build that way today. Somethings that were standard aren't even available anymore; nobody makes orangeburg pipe since the 1970s, so you've got to use something better.
And that's part of the trickery involved here. People say "look that one guy died in that house so we need to require stricter code here." They're not noticing the freezing homeless people that died because housing become $X dollars more expensive and they lost the musical chairs game. Sure the homeless guy wasn't going to buy a brand new house, but through the substitution effect across a wide swath of society eventually down the chain it does filter down to everyone ultimately affecting their access to housing. And hey, added bonus, current homeowners property is also worth more when building becomes more expensive so why not juice that one housing related death for all you got even if you know saving that one in a million rich person's life ends with 2 more dead homeless people or whatever.
The ability for voters, already homed, to just change up the codes on everyone while not having their own homes subjected creates a cruel moral hazard and socially bifurcating effect. The guy that gets in early comes in and gets his, then says fuck you, you have to play by different rules.
I'm not saying the houses should be torn down. I'm saying any updates should put situation where homeowner voters are subject to their own medicine. I don't think they'll choose to tear down the houses. No they might decide after all "hey good enough for me, good enough for you."
As for "can't build with X thing they did/didn't have before." Well you can update the codes to allow both the old and new method for something. That would satisfy conditions for both standing and new construction without uniform enforcement causing old houses to be demolished.
It's honestly kind of insane I've had a couple people basically suggest that if the rules be applied evenly, they're going with the "go and tear down houses when code is updated and see how quick we can make everyone homeless" option to pick up their toys and go home rather than give others the same chance they had by allowing the old ways in the code. That's the only way I can make out you would seriously think people would end up homeless.