13During the carrying out of the work authorized by a development and building permit, the person named in the development and building permit shall keep posted in a conspicuous place on the property in respect of which the development and building permit was issued
(a)
a copy of the development and building permit building permit or a poster or placard in lieu of the development and building permit, and
(b)
a copy of any plans and specifications approved by the development officer or building inspector, as the case may be.