Business Details
From reviewing residential building plans to completing mandatory inspections, we deliver professional certification services designed to help projects meet applicable NSW building requirements. CertOne Building Certifiers operates across Sydney and the wider New South Wales region, supporting homeowners, builders and industry consultants with independent assessments and certification advice. Our work encompasses private building certification, Complying Development Certificates, Construction Certificate approvals, Occupation Certificate issuance and swimming pool compliance assessments. We conduct critical stage inspections to check that construction aligns with approved documentation and relevant standards. Where building work has been undertaken without the necessary approvals, our BCA Reports assess existing conditions, identify possible regulatory deficiencies and outline matters that may require further investigation, documentation or rectification.
We recognise that certification procedures and council compliance matters can involve considerable technical detail. Our team therefore focuses on explaining requirements clearly, coordinating efficiently with project participants and offering guidance appropriate to each situation. We assist with compliance assessments relating to unauthorised Class 1 and Class 10 residential work, including circumstances involving council notices and potential Building Information Certificate applications. Alongside conventional assessment methods, we employ drone photography, thermal imaging and digital reporting technology to support detailed inspections. Our memberships of AAC, AIBS and MBA reflect our professional involvement in the industry. Clients can also request a free fee proposal before proceeding with our certification services.
We recognise that certification procedures and council compliance matters can involve considerable technical detail. Our team therefore focuses on explaining requirements clearly, coordinating efficiently with project participants and offering guidance appropriate to each situation. We assist with compliance assessments relating to unauthorised Class 1 and Class 10 residential work, including circumstances involving council notices and potential Building Information Certificate applications. Alongside conventional assessment methods, we employ drone photography, thermal imaging and digital reporting technology to support detailed inspections. Our memberships of AAC, AIBS and MBA reflect our professional involvement in the industry. Clients can also request a free fee proposal before proceeding with our certification services.
Served areas
- Greater Sydney, the Central Coast, Newcastle, and Wollongong
Details
- Licensed
Highlights and features
- We provide professional residential building certification throughout Sydney and NSW.
- Our experienced private certifiers manage approvals, inspections and final certification.
- We prepare detailed BCA compliance reports for unauthorised building works.
- We offer free fee proposals with expert certification advice.
- Our team delivers efficient approvals with clear ongoing communication.
- We use drones and thermal imaging for detailed inspections.
Services
BCA Reports
We assist homeowners who need to clarify the compliance status of unauthorised building alterations and additions. Whether the work involves a granny flat, carport or residential extension, we inspect it against relevant BCA requirements. Our written assessments outline compliant and non-compliant elements, helping clients respond to council correspondence or progress building information certificate applications.
Private Building Certifier
We provide professional private building certification services for Class 1 and 10 residential projects. Our experienced team assists homeowners, builders and consultants with Complying Development Certificates, Construction Certificates and Occupation Certificates. We conduct mandatory inspections and assess compliance with applicable requirements. From initial project review to final certification, we offer practical advice and ongoing support.
Compliance Consultation
Before submitting building applications, we help clients establish a clear understanding of their approval obligations. Our consultation process includes reviewing project requirements, identifying building code concerns and evaluating available certification pathways. We provide guidance on Development Applications, Complying Development Certificates and other relevant approvals. This approach supports smoother certification and reduces the likelihood of costly delays.
Swimming Pool Compliance Certificates
We assist with swimming pool compliance certificates required for residential property sales, leasing and ongoing pool safety. Our experienced private certifiers inspect pool barriers and assess their conformity with current NSW regulations. If safety deficiencies arise, we outline the necessary corrections and subsequent inspection requirements. Certification follows once the pool area meets the relevant standards.
People
Curtis Prior
Founding Director
Recognising the need for a modern approach in the planning and construction industry, Curtis established CertOne with the aim of revolutionising certification services. Leveraging the power of cutting-edge systems, software, and technology, CertOne sets a new standard in delivering efficient and streamlined certification solutions.
Reviews (12)
Glenn Thomas
Sep 06, 2026
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A big thanks to Nadene & Curtis at CertOne for all their work in certifying our new pool. It was great to finally receive the Whole Occupation Certificate.
Tayla Rodger
Aug 17, 2026
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We are very grateful to the CertOne team for their help in obtaining the OC for our granny flat. Curtis and Nadene were both professional and very enjoyable to work with. They made the entire process easy and stress-free. Would highly recommend Cert One!
Cameron Massingham
Jul 21, 2026
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CertOne has been fantastic to work with. Their communication is always clear, they’re prompt with inspections, and they consistently make the process easy from start to finish. They’re always available to help and provide guidance, which has made our projects run smoothly. Highly recommend their team.
Marcus Temu
Feb 18, 2026
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Curtis and the team at Cert One made the whole process seamless. It's great to work with people who are experienced in making things happen and are giants in their field. I'm so happy with the results and still have an entire head of hair. Highly recommend them.
Glen Hadfield
Dec 27, 2025
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Curtis has been very helpful and knowledgeable about compliance regulations and planning legislation/laws. We very much appreciate his assistance with our current DA and can thoroughly recommend him. We certainly would not hesitate to use him in the future.
Sally McMahon
Oct 22, 2025
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We recently engaged CertOne for a BCA report and were thoroughly impressed. Curtis and Craig were professional, knowledgeable, and a pleasure to deal with from start to finish.
The site inspection and report were a team effort and completed within a single day. Curtis' follow-up contact was thoughtful and extremely helpful, ensuring we had clarity on all aspects of the report and next steps.
I would absolutely use CertOne again and highly recommend them to anyone needing reliable and expert Certifiers.
The site inspection and report were a team effort and completed within a single day. Curtis' follow-up contact was thoughtful and extremely helpful, ensuring we had clarity on all aspects of the report and next steps.
I would absolutely use CertOne again and highly recommend them to anyone needing reliable and expert Certifiers.
Rachael Mcconnell
Oct 22, 2024
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Fiona went above and beyond to help me navigate the process of obtaining an Occupancy Certificate for my property after some rather unfortunate circumstances. Fiona consistently provided A1 customer service. This is a company that cares about people and is reliable and efficient in dealing with customers. I couldn’t recommend CertOne and Fiona more highly.
Administration Sdcd
Aug 14, 2024
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CertOne has been great to deal with. Fiona is very attentive and helpful while completing CDC/OC/CC's.
Highly recommend!
Highly recommend!
Alec Hogan
Jun 28, 2023
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CertOne has great service and high level of communication. We consistently engage with Curtis and the team and come highly recomended.
Tom Collins
Jun 26, 2023
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Great communicators. Polite clean fast. Got their work done as expected and kept us in the loop.
William Pendlebury
May 01, 2023
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I was in the process of finding a certifier when I visited the Sydney Home Show and noticed the CertOne stand. I chatted to them and requested an information pack which was emailed to me that day and after a few questions were answered by email, I signed up straight away, impressed with their response.
Very pleased with the professional service received, the excellent communication process and the admin assistance provided by Fiona to navigate all the documentation.
Would recommend this company.
Very pleased with the professional service received, the excellent communication process and the admin assistance provided by Fiona to navigate all the documentation.
Would recommend this company.