F42[28.—(1) In this section "property concerned" means a property in relation to which a person, by virtue of his or her appointment under this section, is entitled to exercise the powers conferred by this section.

(2) (a) The Commissioner may of his or her own volition appoint an officer of the Commissioner to exercise, in relation to such one or more properties as the Commissioner considers appropriate, the powers expressed by this section to be exercisable by a revision manager, and such an officer who is so appointed is referred to in this Act as a "revision manager".

(b) A revision manager appointed under paragraph (a) or subsection (3) may assign to another officer of the Commissioner any of his or her functions under this section.

(3) If an application under section 27 is made to the Commissioner, the Commissioner shall appoint an officer of the Commissioner to exercise, in relation to the property or properties to which the application relates, the powers expressed by this section to be exercisable by a revision manager, and such manager who is so appointed is also referred to in this Act as a "revision manager".

(4) A revision manager, if he or she considers that a material change of circumstances which has occurred since a valuation under section 19 was last carried out in relation to the rating authority area in which the property concerned is situate or, as the case may be, since the last previous exercise (if any) of the powers under this subsection, or of comparable powers under the repealed enactments, in relation to the property warrants the doing of such, may, in respect of that property—

(a) if that property appears on the valuation list relating to that area, do whichever of the following is or are appropriate—

(i) amend the valuation of that property as it appears on the list,

(ii) exclude that property from the list on the ground that the property is no longer relevant property, that the property no longer exists or that the property falls within Schedule 4,

(iii) amend any other material particular in relation to that property as it appears on the list,

(b) if that property does not appear on the said valuation list and it is relevant property (other than relevant property falling within Schedule 4 or to which an order under section 53 relates), do both of the following—

(i) carry out a valuation of that property, and

(ii) include that property on the list together with its value as determined on foot of that valuation.

(5) A revision manager shall, if the property concerned is property that has been the subject of an application under section 27, within 6 months from the date of his or her appointment under subsection (3) in respect of that application—

(a) make a decision as to whether the circumstances referred to in subsection (4) exist for the exercise by him or her of the powers under that subsection in relation to that property,

(b) if he or she decides that those circumstances do exist, exercise those powers in relation to that property accordingly.

(6) If a revision manager exercises, in relation to the property concerned, any of the powers under subparagraph (i) or (iii) of paragraph (a) of subsection (4) or paragraph (b) of that subsection, he or she shall issue to the occupier of that property and to the rating authority in whose area the property is situate a new valuation certificate or, as the case may be, a valuation certificate in relation to the property.

(7) If a revision manager exercises, in relation to the property concerned, the powers under subsection (4) (a) (ii), he or she shall issue to the occupier of that property and to the rating authority in whose area the property is situate a notice indicating the manner in which those powers have been exercised in relation to that property.

(8) A certificate under subsection (6) or a notice under subsection (7) shall be issued no later than 7 days before the relevant amendment to the valuation list under subsection (10) is made.

(9) If a revision manager decides that the circumstances referred to in subsection (4) do not exist for the exercise of the powers under that subsection in relation to a property referred to in subsection (5) he or she shall, forthwith after the making of that decision, issue to the occupier who applied under section 27(1) in respect of the property, a notice of the decision.

(10) The revision manager concerned shall amend the relevant valuation list in the appropriate manner to take account of the exercise by him or her of the powers under subsection (4) in relation to a property.

(11) Without prejudice to the preceding provisions of this section, the Commissioner may, at any time, amend a valuation list so as to—

(a) correct any clerical (including electronic) error therein, or

(b) amend any other detail appearing on the list that in the opinion of the Commissioner is inaccurate (other than the valuation of any property).

(12) The Commissioner may also, at any time, amend a valuation list so as to take account of any alteration in a boundary that is made under or by virtue of any enactment.

(13) If the Commissioner exercises any of the powers under subsection (11) or (12) he or she shall, as soon as may be after the occasion concerned of their being exercised, issue to each occupier of a property that is affected by such exercise and to the rating authority in whose area that property is situate a new valuation certificate in relation to that property.

F43[(14) An amendment of a valuation list made under subsection (10), (11) or (12) shall have full force, from the date of its making, for the purposes of the rating authority concerned making a rate in relation to the property concerned by reference to that list as so amended.]]

F44[(15) Where—

(a) an amount of monies is paid on account of a rate made in respect of a property, and

(b) it appears, consequent on an amendment of the value of the property made pursuant to an exercise of the powers under this section, that that payment involved an overpayment or an underpayment of the amount due in respect of such a rate,

then the balance owing or owed, as the case may be, to or by the person concerned may be paid or recovered, as appropriate—

(i) in the case of an overpayment, by making a refund to the person concerned of an amount equal to that balance or allowing an amount equal to that balance as a credit against the amount owed by the person concerned on account of a rate made in respect of that or any other property, and

(ii) in the case of an underpayment, by recovering from the person concerned an amount equal to that balance as arrears of the rate concerned (and, accordingly, any of the means provided under any enactment for the recovery of a rate may be employed for that purpose).]