Hi Tony, i will try and answer your questions as best as possible.
Under new EU legislation from the 1st October 2008, when buildings are to be rented out, the landlord is responsible for ensuring a valid certificate is made available to all prospective tenants.
This is for all properties as you state, the legislation does not differentiate for number of bedrooms and is not being phased in as the HIP legislation was.
How and when should I supply the Energy Performance Certificate?
The Energy Performance Certificate (EPC) and recommendation report must be made available free of charge by the seller or a landlord to a prospective buyer or tenant at the earliest opportunity and no later than:
* when any written information about the building is provided in response to a request for information received from the prospective buyer; or
* when a viewing is conducted; or
* if neither of those occur, before entering into a contract to sell or let.
An energy performance certificate does not have to be made available if:
* the seller believes that the prospective buyer or tenant is unlikely to have sufficient funds to purchase or rent the property or is not genuinely interested in buying or renting that type of property; or
* the seller or landlord is unlikely to be prepared to sell or rent out the property to the prospective buyer or tenant (although this does not authorize unlawful discrimination)
There is no reference as to what the tenant should do with the EPC or any obligation for you to upgrade the property implementing reccomendations. However, if the measures are implemented the tenant will propably gain reduced utility bills and less CO2 emmisions. Often there are grants available to help with these improvements.
I have taken the above from
Landlord EPC FAQ on our site. Please feel free to browse and hope this helps.