A provincial heritage resources authority established under the National Heritage Resources Act 25 of 1999 has the power under section 48(2) to impose conditions when granting a demolition permit, including conditions requiring submission of building plans for new development, even in respect of structures that enjoy only general protection under section 34 (structures older than 60 years) and not formal protection under sections 27-32 of the Act. The power to impose conditions under section 48(2) is not narrowly circumscribed but extends to conditions that are consonant with the authority's conservation mandate and the overall objective of the Act, which is the identification, protection, preservation and management of heritage resources for posterity. A condition requiring submission of building plans for approval of new development adjacent to a heritage resource is a condition with a conservation objective, designed to enable the heritage authority to exercise its statutory conservation powers, and is not an impermissible attempt to control development beyond the authority's powers. Such conditions do not offend the principle of legality provided they are within the parameters of the Act and accord with its overall scheme.