Bill wrote:
We can get the garden tidied for him and do small jobs so it looks OK,
and I might be asked to get involved in meeting one or more estate
agents on site.
Is it likely that he would have to get all the doors right before it was
rentable?

IANAL but I don't think door fit is likely to be an issue unless it's a
House of Multiple Occupation (HMO) - ie rented out as rooms - which requires
higher fire safety standards. I think three-storey properties also require
higher standards, BICBW.

OTOH tenants are likely to complain about eg blocked drains so it would be
well to fix things like that up in advance.

What do these inclusive estate agent deals involve? If a tenant is
installed and a light bulb needs replacing, is the agent likely to call
in a contractor at great expense?

Ask the agent for a copy of the tenancy agreement, as well as the agency
agreement. Typically the tenant might be asked to do things they are
provided with tools to do the job for - eg mow the lawn if you give them a
lawnmower - but not things that require training or risk (eg clearing the
gutters from a ladder). Those things expected of the tenant should be in
the tenancy agreement.

Theo