Every lease has terms, such as how much the rent is and when it must be paid, not to cause a nuisance to neighbours and to keep the property in a good condition.  If a tenant does not comply with a term of their lease, they are in breach of the lease.  This gives the landlord grounds to serve seven days’ notice to rectify the breach.  If the breach is not rectified, the landlord can apply to cancel the lease and for an eviction.