The Lancaster Ave. building was far too large for our needs; that was one of the principal reasons for moving.
The Centerbeam space is smaller, of course, but actually still pretty large (the permanent space, anyway; our current basement accommodations are... tight). I think the upstairs space is about 8,000 square feet? It's basically the whole length of the top floor over Canterbury St., 1 'building' deep based on the original footprints before Centerbeam joined them all together.
Here, I made a visual aid. We'll be in the blue highlighted space:
If memory serves, that's 8k square feet, compared to 13k on Lancaster Ave.