This paper seeks to investigate the impact of Section 18 of the Landlord and Tenant
Act 1927 in settlement of dilapidation disputes. This is seen as a developing issue,
in current economic conditions. The paper looks at the two limbs of Section 18, and
offers practical advice to valuers on preparation of Section 18 valuations. By close
analysis of the second limb followed by the fi rst limb, the impact of the terms of the
Act upon diminution in value used as a defence by tenants against landlord claims
under dilapidations can be identifi ed. This paper recognises that preparation of
Section 18 valuations is a practical rather than a theoretical exercise and seeks to
offer practical advice based upon the author ’ s extensive experience of undertaking
such work. The work is, however, mindful of the potential for litigation following such
disputes and the role of the valuer in such an event.

• Section 18 valuations: Wisdom or witchcraft ?