Where a secure tenant has made an improvement and—
the work on the improvement was begun on or after 3rd October, 1980,
the landlord, or a predecessor in title of the landlord, has given its written consent to the improvement or is treated as having given its consent, and
the improvement has materially added to the price which the dwelling-house may be expected to fetch if sold on the open market, or the rent which the landlord may be expected to be able to charge on letting the dwelling-house,
the landlord may, at or after the end of the tenancy, make to the tenant (or his personal representatives) such payment in respect of the improvement as the landlord considers to be appropriate.
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The power conferred by this section to make such payments as are mentioned in subsection (1) is in addition to any other power of the landlord to make such payments.