That’s exactly what the article author expected to do, they said they wanted to make their rental properties more expensive. No one’s installing anything in a rental unit out of the goodness of their heart. They’re literally seeking rent. At least they should be expected to keep up their end of the bargain.
Perhaps. But this stuff does raise the minimum amount it takes to build, which in turn makes developers less likely to invest in building affordable housing.
Assuming 'code' is equivalent to UK building regs. This is very onerous.
Eg if the door lintel is made from wood. Does it pass certification to say it can take that weight. To find out if the lintel is even wood requires removing plaster.
What happens if you wanted to tighten the specs on concrete? Are you going to tear down every pre existing concrete building because they can't demonstrate it was made to the new specs.