You are entitled to occupy the site for the purposes of carrying out the contract. In addition, under most contracts you are entitled to exclude people from the site other than the owner or any person authorised by the owner to be on site. Depending on the provisions of the contract, other people who may be entitled to visit the site include representatives of the homeowner’s finance company (if a loan was required for the work), the building certifier, local authority officers and QBCC officers.
The homeowner and the homeowner’s agent are entitled to reasonable access to the site, under your supervision, to view the work but must not interfere with it. The homeowner may be liable to you for costs or delays caused by interference.