Did homes built after 1976 stop using asbestos?
No date is a safe cutoff. HUD's national construction code took effect on June 15, 1976, and EPA notes that homes built before then used a wider variety of materials. The HUD code sets performance standards rather than banning asbestos, and EPA's rule ending the remaining uses of chrysotile only came in 2024, so a 1980s unit still gets tested before demolition or a major remodel.
What about the roof coating?
Older metal roofs were often recoated, and some coatings did contain asbestos: Oregon DEQ documented one mobile-home roof coating at about 3 percent asbestos in 2016. That is an example, not a rule, and many coatings test negative. If a roof is being recoated, torn off or replaced, add it to the survey.
Can I do the work myself?
If you own the home, live in it as a single-family residence and do the labor yourself, Rule 1403 may not apply to that renovation, although the district advises against it and still regulates the waste once it leaves the house. A rental, a vacant unit or hired helpers change that. Park rules may also restrict how and when work is done.