No, renters are not considered co-owners. I didn't investigate this further beyond my use-case (many co-owners, asking them to agree to anything is like cat he

No, renters are not considered co-owners. I didn't investigate this further beyond my use-case (many co-owners, asking them to agree to anything is like cat herding). Given the protection the renters are getting, I wouldn't be surprised if such a permission would be difficult to get, and the common areas would be considered publicly available.