"16. The panel noted that there was not a planning restriction on the appeal dwelling stating that the appeal dwelling could not be sold separately from a main house. In this instance the appeal dwelling had a restrictive covenant which stated, 'Not to use or permit the use of the said property except for a single private property in one location only'. This is similar wording when there is a planning restriction. When there is a planning restriction it is assumed that an annex has minimal value and therefore those properties are normally placed in Band A.
"Subject to regulation 7 [which is not material], for the purposes of valuations under section 21 (valuations for purposes of lists) of the Act, the value of any dwelling shall be taken to be the amount which on certain assumptions (mentioned in paragraphs (2) and (3)below), the dwelling might reasonably have been expected to realise if it had been sold in the open market by a willing vendor on1 April 1991."
"The assumptions are: (a) that the sale was with vacant possession; (b) that the interest sold was the freehold, or in the case of a flat, a lease for 99 years at a nominal rent; (c) that the dwelling was sold free from any rent charge or other incumbrance."
"My Lords, the question here is whether reduction in value due to an impending demolition order comes within area where realities are acknowledged or within that where necessarily fiction prevails over fact. It is near the borderline which separates those areas. One has a natural inclination to prefer reality to fiction if and where this is compatible with the basis of rating, with the statute, and with the cases.
"In the same way I think it would be accidental to the hereditament that its owner intended to pull it down in the near future. For the hereditament might have had a different owner who would not pull it down. So the actual owner's intentions are thus immaterial since it is the hypothetical owner who is being considered. But when a demolition order is made by a superior power on a hereditament within its jurisdiction different considerations apply. The order becomes an essential characteristic of the hereditament, regardless of who may be its owner or what its owner might intend ..."
" ... any annual or other periodic sum charged on or issuing out of land, except -- (a) rent reserved by a lease or tenancy; or (b) any sum payable by way of interest."
"... a legal or equitable mortgage and a trust for securing money, and a lien, and a charge of a portion, annuity or other capital or annual sum."
"It is common ground between the parties that the statutory hypothesis, as explained in case law, takes account of statutory restrictions on the use of a hereditament but not of restrictions imposed by the covenants in a lease or by restrictive covenants affecting freehold property."