“Hereditament means property which is or may be liable to a rate, being a unit of property which is, or would fall to be, shown as a separate item in the valuation list.”
“If the law is to be rational and consistent, the circumstances in which a continuous territorial block is to be treated as several separate properties or in which geographically separate properties are to be treated as one for rating purposes, must be determined according to some ascertainable and defensible principle.”
“First, the primary test is, as I have said, geographical. It is based on visual or cartographic unity. Contiguous spaces will normally possess this characteristic, but unity is not simply a question of contiguity, as the second Bank of Scotland case 18 R 936 illustrates. If adjoining houses in a terrace or vertically contiguous units in an office block do not intercommunicate and can be accessed only via other property (such as a public street or the common parts of the building) of which the common occupier is not in exclusive possession, this will be a strong 8 indication that they are separate hereditaments. If direct communication were to be established, by piercing a door or a staircase, the occupier would usually be said to create a new and larger hereditament in place of the two which previously existed. Secondly, where in accordance with this principle two spaces are geographically distinct, a functional test may nevertheless enable them to be treated as a single hereditament, but only where the use of the one is necessary to the effectual enjoyment of the other. This last point may commonly be tested by asking whether the two sections could reasonably be let separately. Thirdly, the question whether the use of one section is necessary to the effectual enjoyment of the other depends not on the business needs of the ratepayer but on the objectively ascertainable character of the subjects. The application of these principles cannot be a mere mechanical exercise. They will commonly call for a factual judgment on the part of the valuer and the exercise of a large measure of professional common sense. But in my opinion they correctly summarise the relevant law. They are also rationally founded on the nature of a tax on individual properties. If the functional test were to be applied in any other than the limited category of cases envisaged in the second and third principles, a subject (or in English terms a hereditament) would fall to be identified not by reference to the physical characteristics of the property, but by reference to the business needs of a particular occupier and the use which, for his own purposes, he chose to make of it.”
“To modify the geographical test with considerations of functionality, in this sense of the word, is to add to a clear and objective test the uncertainty of a test that is dependent on whatever happens to be the ratepayer's choice of use.”
“a hereditament is a self-contained piece of property (ie property all parts of which are physically accessible from all other parts, without having to go onto other property), and a self-contained piece of property is a single hereditament.”
“However, as is not unusual, clarity and practicality are to some extent in conflict, and, unsurprisingly in the complex and multi-faceted world of land and buildings, there cannot be complete certainty.”
“A test based on appearance and impression may properly be treated as part of the geographical test. The two subjects have no unifying visual characteristics. There is nothing to indicate that they are operated together, far less that the physical presence of one is essential to the function of the other.”
“Any physical link between two units would have an important part to play in proper application of a geographical test of separation. It might also help demonstrate a functional dependence between two units, such as parts of a factory. Indeed a physical link carrying units of work from one area to another might be regarded as important in relation to both the geographical and functional tests and to the issue of separate lettability. However we agree with the submission that the duct itself is, in the present case, only of significance insofar as it permits the passage of communication cables. We do not think that this is of any real significance in relation to the issue of physical separation.”
“The “direct communication” described at p 382 [para 12] of Mazars was a doorway or a staircase inserted into a boundary wall, or in other words a passage which would have enabled humans to pass from one property to another. We are not persuaded that the examples given in that decision were necessarily intended to delimit the type of link which might satisfy the geographical test. They may have been influenced by the nature of the properties and the land use under consideration. But this point has not been fully argued before us and must await another case. For present purposes we need only say that we do not accept that the ducts and the water supply in this case amount to a sufficient connection for the 0.835 ha area of land on plot 1 to be treated as a single geographical unit with the 2.095 ha area of land on plot 2 from 7 which it is separated by Yarlet Lane. Instead, the water supply is a factor to be considered when applying the functional test.”
“The tribunal quite often listens to, and derives assistance from, opinions, which are in effect opinions on the correct application of the law to the facts of the case, from experienced valuers, but it was in our view perfectly proper for Mr McKaig not to do so in this case.”