21. Restrictions on keeping of animals.

Contractual restrictions on the keeping of animals or poultry on premises let are sometimes inserted in leases or tenancy agreements and, in general, will be enforceable in accordance with the ordinary law of landlord and tenant1. Notwithstanding any such restriction, or any restrictive provision to the like effect contained in any covenant, contract or undertaking relating to the use to be made of land, an occupier of any land may keep, otherwise than by way of trade or business, hens or rabbits in any place thereon and may erect and maintain such structures on the land as are reasonably