Are Shapell homes built in San Mateo in 1978 with popcorn ceilings containing asbestos?
It's very likely that it COULD be. It's fairly simple to find
out. Head down to your local hardware store and obtain an asbestos
test kit. The kit will give you directions on how to take a sample
and send it in to get the results. I STRONGLY suggest that you test
any time you are uncertain so that you can take the appropriate
action to protect your health and the health of everyone who enters
your home.