CertOne Building Certifiers

We are CertOne Building Certifiers, a Sydney-based team delivering residential building certification, inspection and compliance services across Greater Sydney and NSW. Our experienced private certifiers support the approval and construction process by assessing documentation, checking regulatory requirements and conducting inspections at prescribed stages. Clients engage us for Complying Development Certificates, Construction Certificates, Occupation Certificates and Pool Compliance Certificates, as well as professional guidance on certification obligations. We also undertake building compliance consultations and prepare reports addressing unauthorised residential construction. These BCA assessments consider relevant National Construction Code provisions, evaluate existing works and identify issues that may need attention before further approval steps can be considered. Our services are available to homeowners, builders, architects and consultants seeking clear technical assistance.

Technology forms an important part of how we carry out our inspections and communicate findings. We use drones to obtain visual records of difficult-to-access areas and thermal imaging cameras to assist in identifying concealed conditions, including insulation gaps and electrical anomalies. Digital systems further support our reporting and certification processes. For homeowners responding to council compliance letters, we provide detailed assessments that may assist with understanding corrective requirements or pursuing appropriate Building Information Certificate pathways. Our team values dependable service, individual attention and straightforward communication. Through practical advice, industry experience and free fee proposals, we help clients approach residential certification with greater clarity.