Business Details
At CertOne Building Certifiers, we provide comprehensive residential building certification and compliance services throughout Sydney and New South Wales. Our experienced private certifiers assist homeowners, builders, architects and consultants with building approvals, regulatory requirements and inspections from the initial assessment through to final certification. Our services include Complying Development Certificates (CDC), Construction Certificates (CC), Occupation Certificates (OC), pool compliance certificates and mandatory critical stage inspections. We also prepare detailed Building Code of Australia (BCA) reports for unauthorised residential building work, identifying potential compliance concerns and explaining the measures that may be necessary to address them. Our professional team combines technical expertise with clear communication and practical guidance.
We take a collaborative, technology-driven approach to certification, using modern reporting systems, drones and thermal imaging equipment to support accurate and efficient inspections. Our BCA compliance assessments can assist homeowners responding to council notices or considering Building Information Certificate applications. We also offer standalone compliance consultations for projects where we are not the appointed certifying authority. As members of AAC, AIBS and MBA, we maintain a strong focus on professional standards, reliable advice and personalised service. With free fee proposals and a streamlined certification process, we aim to make regulatory compliance easier to understand and manage.
We take a collaborative, technology-driven approach to certification, using modern reporting systems, drones and thermal imaging equipment to support accurate and efficient inspections. Our BCA compliance assessments can assist homeowners responding to council notices or considering Building Information Certificate applications. We also offer standalone compliance consultations for projects where we are not the appointed certifying authority. As members of AAC, AIBS and MBA, we maintain a strong focus on professional standards, reliable advice and personalised service. With free fee proposals and a streamlined certification process, we aim to make regulatory compliance easier to understand and manage.
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
When council raises concerns about unapproved construction, we provide professional BCA inspections and compliance assessments. Our team examines existing building work, identifies areas that meet regulatory requirements and highlights any deficiencies. We prepare detailed findings for council consideration. We also advise homeowners on the appropriate documentation before they proceed with their compliance enquiries.
Private Building Certifier
Our experienced private certifiers work closely with homeowners, builders, architects and consultants to address building approval requirements. We provide compliance consultations, assess residential developments and assist with obtaining the appropriate certificates. Using technology-driven inspections and reporting, we support compliance monitoring during construction. Our services extend from preliminary certification advice through to final approval and occupation.
Compliance Consultation
We provide professional building compliance consultations to help homeowners, builders, architects and consultants understand certification requirements before progressing with residential projects. Our team reviews proposed plans, existing structures and potential compliance risks. We explain suitable approval pathways, including CDC and DA options, and recommend practical solutions. Our guidance helps minimise delays and avoid unnecessary rectification costs.
Swimming Pool Compliance Certificates
Our swimming pool compliance certificate service helps property owners meet NSW pool safety regulations. We conduct detailed barrier inspections, examining fencing, gate operation, latches and required safety signage. Where deficiencies are identified, we provide practical advice on corrective measures. Following confirmation of compliance, we arrange certification to support lawful pool use, property sales and leasing.
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 (17)
Betty Ivanoff
Sep 08, 2026
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Coming into this process new was very daunting for with so many approvals and steps needed. Curtis and the team at CertOne were very patient and helped guide us through all the steps - and hopefully we will be enjoying our new alfresco area this summer!
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.
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.
David B.
Mar 19, 2026
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I would highly recommend Curtis from CertOne. He was excellent, great communication, knowledgeable and provided assistance as needed throughout our cdc certification process.
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.
Brett
Sep 16, 2025
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We recently used Cert One on our pool build from Oct to Dec 24.
Their team was fantastic from the moment we made contact.
No delay in communication, everything was very clear and made sense.
I find response times very important these days and their team did not let us down.
Their team was very helpful with all our questions and queries throughout the process.
They were very efficient in getting our Occupational Certificate at a very busy time of year where everyone is trying to complete their projects prior to Xmas.
If you have never needed a certifier before and you do now, it probably means you are doing a project that might be a bit daunting to you so it’s nice to have confidence in a company that are helping you with this process. I can thoroughly recommend Cert One for your next or first project.
Thanks very much Fiona and Curtis.
Brett and Leah
Northern Beaches
Their team was fantastic from the moment we made contact.
No delay in communication, everything was very clear and made sense.
I find response times very important these days and their team did not let us down.
Their team was very helpful with all our questions and queries throughout the process.
They were very efficient in getting our Occupational Certificate at a very busy time of year where everyone is trying to complete their projects prior to Xmas.
If you have never needed a certifier before and you do now, it probably means you are doing a project that might be a bit daunting to you so it’s nice to have confidence in a company that are helping you with this process. I can thoroughly recommend Cert One for your next or first project.
Thanks very much Fiona and Curtis.
Brett and Leah
Northern Beaches
Saher Yousif
May 08, 2025
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Curtis was a pleasure to work with. His expertise and professionalism made the entire certification process smooth and stress-free. I really appreciate his clear communication and helpful guidance every step of the way. Thank you so much for your outstanding service, Curtis!
Chalk & Willow
Apr 23, 2024
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CertOne have been amazing, following a very stressful time when our builder went to administration. I'd like to mention Fiona in particular, who has always been so helpful and efficient. She has advised us each step of the way, and taken some of the stress out of a horrible situation. I wouldn't hesitate to recommend CertOne Building Certifiers.
Derek Powell
Sep 18, 2023
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Can't fault these guys. A good safety net when my builder didn't quite get things right, as well as being pragmatic and responsive. Would definitely use again.
George Bouabdallah
Aug 13, 2023
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Very thorough and professional, Curtis would constantly communicate updates to me and would assist with any questions I had. Would recommend to anyone in need of their services.
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.
Karl Barrak
May 24, 2023
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Absolutely outstanding service from the whole team at CertOne.
They were very helpful, prompt and professional throughout the entire process. I will certainly use their services in the future as well as continue to recommend them to others. Keep it up guys!
They were very helpful, prompt and professional throughout the entire process. I will certainly use their services in the future as well as continue to recommend them to others. Keep it up guys!
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.