SARS has strict rules for the proof of address needed for VAT registration. You must provide one of these two documents:
Lease Agreement: If your company is located in a rented space.
Municipal Account: An account for a property owned by your company.
If your company operates from a space owned or rented by someone else (meaning the address proof isn't in your company's name), you need to take an extra step. Complete the 'Confirmation of Entity Residential/Business Address' (CRA01) form. The person who owns or leases the space must sign this form. Then, attach it with their lease agreement or municipal account. You can download the CRA01 form here.