@Joseph Firmin
#1 The leases should be part of the DD materials that seller delivers to Buyer (or allows Buyer to review) upon execution of the PSA. The PSA usually contains an exhibit with a certified rent roll (which will be updated and recertified at closing) summarizing the tenants, terms, SDs, etc. but the actual leases are not attached. Seller should also provide a rep/warranty when the PSA is signed (which is reaffirmed at closing) that the rent roll is complete and accurate.
#2 Sometimes sellers will provide this type of rent verification, but many will not. buyer should request financial docs (I.e. P&Ls and balance sheets for prior years, year to date and trailing 12 months along with a summary of cap ex for the prior X years, etc.). In MF you typically do not get estoppels from tenants (b/c there are so many and b/c leases often do not require tenants to deliver them and b/c lenders usually do not require them) so you have to rely on seller’s DD docs, seller’s PSA reps and warranties related to the leases and your own DD.