With leased areas the entry into the lease is decisive.
If the business area is only leased, the buyer must enter into the lease or conclude a new contract. In an asset deal the lease does not pass automatically; often the landlord consent is needed. Check the term, termination rights and any change-of-control clause of the lease. How the transfer of contracts and employees connects is shown in the post on the transfer of business.
Only once the continuation of the business area is secured is the location of the acquired unit settled.