OK - one more.
Building codes for new construction are steeper than when older mobiles and homes were made. But you aren't required to bring your house up to every new code that is passed, and thank goodness for that. They'd keep us all broke. Code improvements come up and are required when you do a major remodel or addition. Some apply when you try to sell or finance it. Short of that, new code doesn't apply to old homes.
True, bringing up to code only applies when selling or remodeling so I am affected by that.
That's somewhat dependant on the locality and the type of code but you're generally correct. Some communities require upgrades only at the time of sale, while others grandfather older codes. Certainly, it would not be cost-effective to bring an older mobile home up to newer standards. The things are very modular and would require a complete rebuilding. Its cheaper to just make a new one.
That said, I'm still a little less than enthusiastic about the government getting too overbearing in terms of construction. We can build an absolutely hurricane-proof structure, up to catagory 5, but it would be enormously expensive. Few would be able to afford it.
Housing needs to be available at all levels - cheap, middle class, and upper class. And the market generally takes care of this. We have to be careful not to let the government price low-cost housing out of existance. If I had but $5000 in my pocket and a low-wage job, I'd not hesitate to buy a trailer to live in. I'd take that over any government-subsidized housing any day.
BTW, I wasn't picking on your post - just speaking in general, since I have the floor for a minute.