If you’re thinking about constructing, renovating or adding a granny flat in Sydney, you’ve probably heard the word “certifier. So, what is a certifier and when is one really needed? This guide explains it in simple terms.
What is a Private Building Certifier?
A private certifier in Sydney homeowner can employ is an independent and accredited building expert that inspects your building work to ensure that it complies with the National Construction Code, relevant Australian Standards and NSW planning laws. They are not working for you, your builder or council. They turn their work around on their own, and that is why their sign-off is legally binding.
Certification is available in NSW as follows: Council certifier; Private certifier inΒ Sydney (Australia-wide accreditation) to operate in any part of NSW. They are equally empowered by the Environmental Planning and Assessment Act 1979. Selecting a private certifier in Sydney with national accreditation by the national accreditation schemes in Australia provides greater confidence in their qualifications. Most homeowners and builders prefer to use a private certifier in Sydney as they are likely to be more flexible with the time of their inspection, provide a more direct communication, and provide a faster turnaround than a busy council department.
It is important to note that the choice of certifier is up to you, and not your builder. This ensures you, the property owner, as the person checking compliance does not have an interest in cutting corners.
When is it necessary to have one?
This is the question that homeowners want to be answered. Notably, a building certifier NSW is required whenever you’re undertaking work that isn’t considered to be “exempt development” which refers to relatively minor work, such as a small garden shed of a specific size. The first step in the design process for a project is likely to be determining if your project requires a building certifier NSW has recognised. A certifier will be engaged if you require council approval or State approval.
Here are a few typical occasions when you may want to hire one:
- Constructing a new house, granny flat or second dwelling.
- Improving, extending or altering a previously built home
- Setting up a swimming pool.
- Constructing a deck, carport or retaining wall over a specific height
- Any fit-out or new construction project for a commercial or industrial building.
- Subdividing land or registering a strata plan
If your project is any of these types, you will need to engage a Principal Certifier prior to works commencing, via the NSW Planning Portal. Your builder will not be able to appoint this certifier or force you to select a specific one. It is up to you to make that choice.
A presentation on the CDC and DA by two different pathways.
If you have determined that you do need certification, the next question is what approval pathway should you use? This is where cdc private certifiers come in handy, as they specialize in expediting eligible projects along this route.

A Complying Development Certificate (CDC) is a speeded-up approval process that combines planning and construction approval. A certifier can issue a certificate for a project that satisfies all of the codes standards (building height, setbacks, floor space ratio and lot size) without the involvement of council. Many cdc private certifier in Sydney can have an eligible application processed in just 10 to 20 business days, whereas a Development Application will typically take 6 to 16 weeks (and sometimes longer) to be processed through Council.
The compromise is flexibility. No negotiation is permitted in a CDC pathway: all numeric rules must be followed. Once your block is heritage-listed, in a bushfire zone, or your design falls outside of the standard limits, it’s likely that you’ll need a DA, and then a Construction Certificate before you can get started on your block.
Construction Certificates and Occupation Certificates Explained
Homeowners often find two certificates confusing β the Construction Certificate (CC) and the OC certificate NSW authorities ask for before moving in. The distinction between these two and what stage each one needs to be at is far less confusing.
A Construction Certificate is issued to verify that your detailed plans and engineering documents meet NCC requirements and the conditions of a development consent. No construction can be legally commenced after a DA approval is granted until this certificate is issued.
The OC certificate NSW regulations describe is at the end of the process. Your certifier will carry out a final inspection once construction is complete and, if all is in order, your Occupation Certificate will be issued. This document establishes the safety and structural integrity of the building, and its suitability for occupation or use. Even if it may appear complete from the outside, you typically cannot legally be in possession of a new house, granny flat or commercial fit-out without one.
π‘ Did You Know?
The annual cost to NSW of building defects is estimated to be around $700 million, with many associated with issues that could have been identified as part of the mandatory building inspection regime. That’s why a critical stage inspection cannot be done by a photo sent through by the builder and a certifier must be physically present at the critical stage inspection. But it’s impossible to see what is behind a wall or under a slab from a picture.
The Importance of Selecting the Correct Certifier
Whether you go with a council certifier or a private certifier in Sydney -based firms offer, the certifier you choose is regulated under the Building and Development Certifiers Act 2018 and overseen by Building Commission NSW. They are required to have professional indemnity insurance, regularly audit and are subjected to substantial financial penalties if they don’t meet their obligations.
Prior to appointing, please verify that the Building Certifiers are registered and insured with the Building Certifiers Public Register and that there are no complaints in the Building Certifiers disciplinary register. A registered building certifier NSW building professional will be transparent with you about these inspections and welcome you to research the building certifier beforehand and before entering into a contract.
It can also be beneficial for builders and developers who manage several sites to use an experienced private certifier in Sydney that has been registered in other states under Automatic Mutual Recognition, as this allows the private certifier in Sydney to work across the states without the need for requalification in each jurisdiction. This type of Australia-wide private certification is especially useful for companies that operate beyond their state boundaries.
Certification for Commercial and Industrial Projects
Commercial and industrial projects are subject to the same requirements as homes for certification. The typical track fast tracked is followed in office fit-outs, retail shopfitting, warehouses and factory units, where experienced cdc private certifier in Sydney assess the fit-out against the Codes SEPP instead of a lengthy council DA process. Many builders use the same cdc private certifiers for their residential and commercial projects, as the process and documentation is similar.
Whatever the size of the project, the end goal is the same β to have a building certifier NSW authorities recognise sign off at various critical stages and a final OC certificate NSW law mandates issued before the space can be legally used. One or the other omissions or haste will make the entire project and your right of use of the building, in jeopardy.
Key Takeaways
- For nearly all building projects outside of minor exempt development, a certifier is required β new construction, renovations, pools, decks, subdivision and commercial fit-outs are all examples.
- A private certifier in Sydney owners opt for typically provides quicker turnaround and scheduling than council and has the same legal standing.
- A DA pathway is slower, but design is more flexible, while the CDC pathway is faster.
- Before building commences a Construction Certificate is required and a NSW law mandates an OC certificate before you can move in or use the space.
- Please check the registration and insurance of a building certifier before appointing.
Final Thoughts
Having the knowledge of when a Private Certifier in Sydney is needed and what works for your project can save you weeks of delays and some stress! From a deck, to a new home, or even a commercial development, it’s one of the easiest ways to remain lawful with NSW legislation to work with the proper certifier from the start.
It’s a great idea to have a word with a trusted Sydney private certifier before committing to a project, if you’re planning one. It may save you the expense of redoing your design later on.
Frequently Asked Questions (FAQs)
Q. Do I need a private certifier in Sydney for a small renovation?
Depends on the extent of task. Small tasks, such as a garden shed, are typically exempt from certification and are considered “exempt development. However, construction changes, extensions or any change to the building footprint will normally require the services of a building certifier as per NSW law.
Q. What’s the difference between a private certifier and a council certifier?
They both hold equal powers under the Environmental Planning and Assessment Act 1979. The main difference is the service, and for Sydney homeowners, a private certifier in Sydney may provide turnaround in a quicker time frame and allow more flexibility in scheduling the inspections than a council certifier.
Q. Does my builder have freedom of choice of certifier?
No. The certifier is not your builder’s choice, it is your choice. Your builder is not allowed to make a selection on your behalf or push you into choosing a provider because it helps keep the certifier independent and you as the property owner’s best interests in mind.
Q. What is the difference between the length of a CDC vs a DA?
Cdc private certifier in Sydney may be able to process an application that is eligible for certification within 10 to 20 business days. The time for processing a standard Development Application through council is normally 6-16 weeks, but can be longer depending on the complexity of the application and council workload.
Q. If my project doesn’t qualify for a CDC what happens?
If you have a heritage listed site, are in a bushfire zone or your design does not meet all of the numeric provisions in the Codes SEPP you will need to submit an application to council for a DA. You will still need to have a Construction Certificate to enable construction work to be legally commenced.
Q. Is it possible to occupy the new premises prior to the issuance of an Occupation Certificate?
No. Before you can move in, whether you are building a new home, granny flat or commercial building, an OC certificate NSW regulations require must be issued, even if the building appears to be complete. Having no building in an occupied building can lead to problems when selling the building later.
Q. How to verify the registration of a certifier?
The Building Certifiers Public Register allows you to verify the status of a certifier’s registration and insurance, and the separate disciplinary register can be used to check if there are any complaints or disciplinary action recorded against a certifier prior to signing a contract.