It is mandatory for a landlord of a large House in Multiple Occupation (HMO) to have a licence. Currently, a large HMO is usually one which is rented out to five or more people who form more than one household; is at least three storeys high, and has shared toilet, bathroom or kitchen facilities. Some local authorities also require landlords of small HMOs to be licensed. A licence is valid for up to five years. Note however that from 1st October 2018, the Licensing of Houses in Multiple Occupation (Prescribed Description) (England) Order 2018, SI 2018/221 will replace Licensing of Houses in Multiple Occupation (Prescribed Descriptions) (England) Order 2006, SI 2006/371, removing provisions requiring mandatory licensing only in buildings of three or more storeys