I'm not a vet ... nor do I play one on TV! I do have a contract with the animal hospital. In its original form, a percentage of the gross was kept by the hospital, and no rent was involved. At this point, I maintain their website and computers, and design their reminder cards, business cards, etc., so our deal has changed.
At first my setup was taken down when I wasn't there ... I work 12 hours/week (afternoons on M-W-F) in the "slow season" plus the occasional Saturday. The holiday months (Nov-Dec) may see me working six days a week, and foregoing outside work completely!
They've allowed me to mount a 3-roll seamless rack, and my room is never taken down ... it's now the permanent studio.
Ken