(1)Unless with the consent of the local authority, which shall not be unreasonably withheld, no building shall be erected over, or in such a way as to interfere with or to obstruct access to, any sewer vested in the authority.
(2)If any question arises as to whether consent under the foregoing subsection has been unreasonably withheld or as to what conditions should be attached to the consent, a person aggrieved may refer the question by summary application to the sheriff, whose decision in the matter shall be final.
(3)In this section " building " has the same meaning as in section 29(1) of the [1959 c. 24.] Building (Scotland) Act 1959.