Rogue landlords targeted by new scheme in Newham
1 January 2013 Last updated at 09:58 GMT
Newham Council in east London is becoming the first local authority in England to introduce a compulsory system of landlord registration.
Owners of privately-rented homes now have to declare criminal convictions and meet health and safety standards - or face a fine of up to £20,000.
Mike Sergeant reports.