Antiques And Rare Books Store
An excuse for ordering in strange artefacts, and keeping an eye on the trade to see who else is ordering in strange artefacts. It's good for emphasising the occult research side of the House(s) and Clan. Warehouse space doubles as the lab.

Fringe Religion Meeting Hall
Also for the occult side, but for the creepy weird pyramid part of it.

Medical Research Facility
For all your rare blood type needs, and optionally raising awareness of conditions like Schere's Disease. For the modernist "science, not magic, honest!"...