1/18 scale buildings links??

I came across this forum while looking for 1/18 scale buildings. Maybe I'm entering the wrong information on Google, but I can't seem to find any links to websites that specialize in these items. I have three 1/18 scale diecast '59 Cadillac ambulances and would like to have a service station, garage or firehall to park these in and around. So far I'm coming up empty. Can any of you experienced model enthusiasts point me in the right direction? Thanks.

21st century toys makes some 1/18 scale buildings. They are meant for WWII war dioramas tho.