Undertenants

An undertenant is a residential tenant who rents from your tenant (the mesne tenant or mesne landlord) rather than directly from you as superior landlord. In a simple chain, superior landlord → mesne tenant → undertenant, you may never deal with the undertenant day to day, but they still live in your building under a private tenancy. The arrangement arises from subletting. The mesne tenant grants a tenancy to a third party, creating a second tenancy sitting beneath the first. Shelter England's guidance on subletting sets out how these arrangements interact with the tenancy agreement and the law.

The undertenant's rights

In most cases, an undertenant will hold an assured tenancy in the Private Rented Sector, with full rights on rental standards, fit for human habitation, permitted payments, tenancy deposit protection, grounds for possession, and access to the Private Rented Sector Ombudsman. Those rights exist against the mesne landlord, not directly against you, but councils and tribunals can look up the chain if there are serious breaches. Both you and the mesne landlord may face scrutiny around licensing, safety, and overcrowding, including HMO licence requirements where they apply.

What this means for you as superior landlord

Your own lease or tenancy agreement with the mesne tenant will usually specify whether subletting to subtenants or undertenants is allowed, and on what terms. If the mesne tenant creates undertenancies in breach of that covenant, you may have grounds for regaining possession from them. However, you must still handle any end of tenancy and the move to vacant possession lawfully, undertenants can sometimes gain limited protection against you as superior landlord even where the subletting was unauthorised, so specialist advice is advisable before acting.

Also see our landlord blog articles.