4. Land is “neighbouring land” for the purposes of section 21(1)(a) if–
(a)it is within 4 metres in any direction of any boundary of the premises to which the application in question relates; and
(b)it is not part of–
(i)a road (within the meaning of section 107 of the New Roads and Street Works Act 1991 M1);
(ii)land covered by water; or
(iii)a railway line.
Marginal Citations