A communication from a local authority that indicates it has considered a building plan application, does not approve it as submitted, provides reasons for non-approval, and indicates what is necessary for reconsideration, constitutes a 'refusal to grant approval' within the meaning of s 7(1)(b) of the National Building Regulations and Building Standards Act 103 of 1977, not a failure to decide. A 'refusal to approve' differs from 'rejection' in that it is more flexible and contemplates possible reconsideration under s 7(5) if the applicant addresses the stated concerns. Where a local authority has refused to grant approval under s 7(1)(b), the applicant's remedy lies in appeal to a review board under s 9(1), not in a direct court application under s 8(1). Section 8(1) applies only where a local authority 'fails to grant or refuse' approval, not where a decision (whether approval or refusal) has been communicated. Provisions of an Integrated Development Plan that are incorporated into a town planning scheme through scheme clauses acquire the force of law and constitute 'any other applicable law' within s 7(1)(a) of the Act. A local authority is legally precluded from approving building plans that do not comply with binding scheme clauses requiring accordance with an approved IDP.