We have talked about this before but one thing I will say is that if you ask your local fire dept you will get a deer in the headlights look and one of those "So how much ya got?" replies.
SAAMI publishes two relevant brochures
And just like the items if referances;
No more than 10,000 primers may be displayed in a commercial establishment
Means that every gun shop is in violation. 10K of primers is two little boxes of 5K each.

Apparently most/many municipalities have adopted ordinances that codify the guidelines contained in the NFPA Guidelines (I'll be checking the local ordinances here to be sure). Further, many insurance companies require compliance with local ordinances in order to pay on any claims.
Good luck finding them and once again when you ask about them be prepared for the "How much ya got?" I spent a few days searching and calling years ago and gave up after being asked again and again. Please do report back to us on your experience.

I myself am comfortable with my storage as nothing is perfect other than having your own little igloo out in the back 40. My garage is scarier than my reloading room.