Section 158(3) in West Bengal Municipal (Building) Rules, 2007
(3)Every application, specified in sub-rule (1) shall be accompanied by a site plan in triplicate and the reports and/or recommendations of tests for soil and stability of slopes, as and where applicable under rule 157 together with a fee as specified in rule 4 The site plan shall be drawn to the scale of not less than one centimetre to six metres and shall be signed by the applicant and by the Licensed Buildings Surveyor or Architect as required under rule 161 with a certificate to the effect that the site has been inspected personally by the Licensed Building Surveyor or the Architect, as the case may be.