URBAN COUNCILS ACT Chapter 29:15 (ii) calling upon the owner or occupier of the property to lodge with the clerk of the valuation board, in writing in the form prescribed, any objections he may have to the proposed amendment within a specified time which shall be not less than twenty-one days from the date on which such notice is served upon him. (3) Any objection to a proposed amendment of a valuation roll for a reason specified in subparagraph (i) of paragraph (b) of subsection (1) shall be limited to the change of valuation as a result of any alteration, addition or demolition of the property concerned. (4) Where the clerk of the valuation board has advised the council that— (a) no objections to a proposed amendment of a valuation roll have been duly lodged in terms of this Part; or (b) any objections to a proposed amendment of a valuation roll that have been duly lodged in terms of this Part have been withdrawn; or (c) the valuation board has confirmed, either wholly or subject to modifications, any proposed amendment to a valuation roll; the council may cause the valuation roll to be amended accordingly. 250 Basis of valuation of non-residential property (1) Where a valuation of any non-residential property is made for the purposes of section two hundred and forty-seven, two hundred and forty-eight or two hundred and forty-nine, the basis of valuation of the property shall be the estimated price which a buyer would be willing to give and a seller would be willing to accept if the property to be valued were brought to voluntary sale in the open market— (a) in the case of a general valuation, at the date fixed in terms of paragraph (a) of subsection (1) of section two hundred and forty-seven; (b) in the case of a supplementary valuation or valuation for the purposes of section two hundred and forty-nine at the date fixed in terms of paragraph (a) of subsection (1) of section two hundred and forty-seven and any general rise or fall in property values since that date in respect of the last general valuation shall be ignored: Provided that, where the date referred to in section two hundred and seventy-six is prior to the date referred to in paragraph (b) of subsection (1) of section two hundred and sixty-three, the supplementary valuation for the period prior to that date shall be calculated on the same basis as the previous general valuation roll. (2) For the purpose of any valuation roll, the valuation determined in terms of subsection (1) may, if the council concerned so wishes, be apportioned between the land and the improvements in the following manner— (a) the valuation of the land shall be its value as though it were unimproved; (b) the valuation apportioned to the improvements shall be the valuation of the property less the valuation of the land as determined under this section. (3) Where— (a) non-residential properties have been consolidated, the valuation of the consolidated property shall be the combined valuations of the properties that have been consolidated; (b) a single non-residential property valued as a whole has been subdivided among two or more owners, the valuation of such single property shall be divided among the subdivided portions in such proportions as may be agreed upon by the owners or, failing such agreement, as may be determined by the valuation officer at the expense of the owners; until a supplementary valuation is made in terms of section two hundred and forty-eight or the valuation roll is amended in terms of section two hundred and forty-nine or the next general valuation is made in terms of section two hundred and forty-seven, whichever occurs the earlier. (4) In determining the valuation in terms of this section the valuation officer shall ignore any exceptional circumstances of a temporary nature. 251 Valuation of land only: non-residential property Notwithstanding sections two hundred and forty-seven and two hundred and forty-eight, where a general or supplementary valuation of non-residential property is made or a valuation 99