Why this is not a dropdown
Getting the regime wrong is not a formatting problem. A fixed-term AST issued for a tenancy that the Act says is periodic is the wrong document, and you find out at the point you need it to work.
So the builder reads the dates and produces the agreement that matches, rather than trusting anyone to remember which side of the cutover a tenancy falls on.
One document
A tenancy entered into after the cutover is owed a written statement of terms before it is agreed, and a written tenancy agreement usually serves as that statement. The builder produces one document, the agreement, and you send it to the tenant from the builder, so the record of what was served sits in one place.
Signing
Send it for e-signature and each signature is captured with the time and the signing details recorded against it. When the last signature is in, the signed PDF is filed in your documents, ready for the move-in pack, and for signings completed from 29 September 2026 the tenant can download their signed copy from their portal.
