(2) If the owner uses a standard lease form for rental to unassisted tenants in the locality or the premises , the lease must be in such standard form (plus the HUD-prescribed tenancy addendum). If the owner does not use a standard lease form for rental to unassisted tenants, the owner may use another form of lease , such as a PHA model lease (including the HUD-prescribed tenancy addendum). The HAP contract prescribed by HUD will contain the owner 's certification that if the owner uses a standard lease form for rental to unassisted tenants, the lease is in such standard form.