No person shall occupy a new building until-

a) the owner has applied for a certificate of occupation and paid the prescribed fee; and

b) the building has been inspected by the local authority and the local authority has issued the certificate approving the building as being ready and suitable for occupation:
Provided that-

i) subject to considerations of health and safety, the local authority may permit a reasonable number of watchmen to occupy or use a building before the building is approved for occupation; and

ii) the local authority may approve the occupation of part of a building before the whole building is completed, subject to such conditions as the local authority may impose.