21(1)The occupier must—
(a)pay the pitch fee to the owner,
(b)pay to the owner all sums due under the agreement in respect of gas, electricity, water, sewerage or other services supplied by the owner,
(c)keep the mobile home in a sound state of repair,
(d)maintain—
(i)the outside of the mobile home, and
(ii)the pitch, including all fences and outbuildings belonging to, or enjoyed with, it and the mobile home,
in a clean and tidy condition, and
(e)if requested by the owner, provide the owner with documentary evidence of any costs or expenses in respect of which the occupier seeks reimbursement.
(2)The owner must not do or cause to be done anything—
(a)which may adversely affect the ability of the occupier to perform the obligation under sub-paragraph (1)(c) or which may deter the occupier from making internal improvements to the mobile home or interfere with the occupier’s ability to do so, or
(b)which may adversely affect the ability of the occupier to perform the obligations under sub-paragraph (1)(d) or which may deter the occupier from making external improvements to the mobile home or interfere with the occupier’s ability to do so.
(3)Sub-paragraph (2) does not authorise the occupier to carry out works to the mobile home which are prohibited by the terms of the agreement or by or under any enactment.
(4)Where the terms of the agreement permit works to the mobile home to be carried out only with the permission of the owner, that permission must not be unreasonably withheld.