How Much Does a Complying Development Certificate (CDC) Cost in NSW?

If you’re considering the Complying Development Certificate (CDC) pathway for your building project in NSW, one of the first questions you’ll have is cost. CDC fees vary depending on the type and size of the project, but understanding the typical ranges and what’s included will help you budget accurately and compare quotes.

What does a CDC typically cost in NSW?

CDC costs in NSW generally range from $1,500 to $5,000 or more, depending on the project. A granny flat (secondary dwelling) typically falls towards the lower end of that range, while a new dwelling house or double storey build will be at the higher end. Larger or more complex projects may cost more.

These figures cover the certifier’s fee for assessing your documentation against the relevant standards and issuing the CDC. They don’t include the cost of preparing that documentation (architectural plans, engineering, survey, BASIX), which you’ll need to budget for separately.

The NSW Planning Portal charges a $47 lodgement fee per application. This is a government fee, not a certifier charge, and it applies regardless of which certifier you use.

What’s included in a CDC fee?

At a minimum, a CDC fee covers the certifier’s assessment of your application against the SEPP (Exempt and Complying Development Codes) 2008, the National Construction Code (NCC), and any applicable Australian Standards. If the application complies, the certifier issues the CDC.

What varies between certifiers is whether the fee also includes the Principal Certifier (PC) appointment and the mandatory inspections during construction. Some certifiers offer a bundled package that covers the CDC assessment, PC appointment, all six critical stage inspections, and the Occupation Certificate (OC). Others charge the CDC assessment separately, with inspection services quoted as an additional line item.

When comparing quotes, make sure you’re comparing like with like. A lower CDC fee that doesn’t include inspections may end up costing more overall than a slightly higher bundled price.

What additional costs should I budget for?

The certifier’s fee is only part of the total cost of getting a CDC. You’ll also need to cover the preparation of the required documentation, which typically includes:

Architectural plans: Site plans, floor plans, elevations, and sections prepared by a qualified designer or architect. Costs vary based on complexity, but for a standard residential project, expect several thousand dollars.

Structural engineering: Engineering plans and certification for footings, slabs, framing, and any other structural elements. The engineer also provides specifications that the builder and certifier reference during construction.

Registered survey: A surveyor’s plan showing property boundaries, existing structures, levels, and any easements. This is essential for confirming setbacks and site coverage calculations.

BASIX certificate: Required for most residential development. The BASIX assessment itself is generated online, but your architect or designer will need to factor it into the design, which may affect their fee.

Specialist reports: Depending on your site and project, you may need additional reports such as a geotechnical (soil) investigation, stormwater management plan, bushfire assessment, or acoustic report. Each of these involves engaging a specialist consultant.

These consultant costs are not unique to the CDC pathway. You’d need the same documentation (and often more) if you went through the Development Application (DA) route. The difference is that the CDC pathway typically requires less back-and-forth with council, which can reduce consultant hours.

Is a CDC cheaper than a DA?

In most cases, yes. The total cost of the CDC pathway is typically lower than the DA plus Construction Certificate (CC) route, for two reasons.

Direct costs are lower. A CDC is a single application to one certifier. A DA involves council application fees (which vary by council and project value, but can be several hundred to several thousand dollars), then a separate CC fee from either council or a private certifier. The combined DA plus CC fees usually exceed the equivalent CDC fee.

Indirect costs are lower. The CDC pathway is significantly faster. A DA typically takes 6 to 12 weeks (and often longer), compared to the CDC’s 10-day statutory determination period. During the DA approval period, you’re carrying holding costs on your loan, potentially facing material price increases, and losing time before construction can start. For a loan-funded project, even a few extra months of delay can cost thousands in interest payments alone.

The exception is if your project doesn’t qualify for a CDC, in which case the DA pathway is your only option. But for eligible projects, the CDC route is almost always more cost-effective overall.

Why do CDC prices vary between certifiers?

Several factors influence what a certifier charges for a CDC:

Scope of service. As mentioned above, some certifiers bundle the CDC with inspection services, while others price each component separately. A bundled fee may look higher upfront but can represent better value overall.

Thoroughness of assessment. Certifiers who conduct more detailed reviews, attend site for all inspections in person, and proactively check for potential compliance issues invest more time per project. This is reflected in their pricing. A certifier who reviews documentation quickly and relies on builder-submitted photos for inspections can charge less, but the level of oversight is different. For more on this trade-off, see our article on the risks of choosing the cheapest building certifier.

Project complexity. A straightforward single-storey granny flat on a standard lot will cost less to assess than a double-storey dwelling on a sloping site with reactive soil conditions. More complex projects require more detailed assessment and potentially additional inspections.

Location. Travel time for inspections can factor into pricing, particularly for regional or outer suburban projects.

How can I get an accurate CDC quote?

To get a meaningful quote from a certifier, provide as much detail as possible about your project. At a minimum, share:

The property address (so the certifier can check zoning, constraints, and site conditions), the type of development proposed (new dwelling, granny flat, renovation, pool), architectural plans if you have them (even preliminary drawings help), and any known site issues (sloping land, reactive soil, flood or bushfire zones).

When you receive a quote, check that it clearly states what’s included and what’s not. Key questions to ask:

Does the fee include the PC appointment and all mandatory inspections? Are there any additional charges for extra inspections beyond the six mandatory stages? Is the NSW Planning Portal lodgement fee ($47) included or additional? What happens if the certifier requests additional information during the assessment: is that covered, or are there fees for reassessment?

A good certifier will provide a clear, itemised breakdown so there are no surprises. If a quote feels vague or doesn’t specify what’s included, that’s worth noting.

What about the cost of getting it wrong?

While it’s natural to focus on the upfront cost of a CDC, it’s worth considering the cost of compliance failures during the build. Building defects cost NSW homeowners an estimated $700 million per year, and many of those defects could have been caught during the inspection process if the certifier was thorough.

The Home Building Compensation Fund (HBCF) caps payouts at $340,000 per dwelling. If defect rectification costs exceed that, the homeowner bears the difference. Common issues include waterproofing failures in wet areas, structural problems from inadequate soil testing, and non-compliant drainage.

The certification fee is a small percentage of your total build cost. Choosing a certifier based on price alone, without considering how thorough their inspections will be, can be a false economy. For a deeper look at this, read our guide on why the cheapest certifier isn’t always the best value.

Frequently asked questions

How much does a CDC cost in NSW?

CDC fees typically range from $1,500 to $5,000 or more, depending on the project type and complexity. A granny flat is generally at the lower end, while a new dwelling or double storey house costs more. Additional costs include the $47 NSW Planning Portal fee and consultant fees for plans, engineering, and reports.

Is a CDC cheaper than going through council?

Usually, yes. The CDC pathway involves one application fee to a certifier, compared to separate council DA fees and CC fees. The faster timeline also reduces indirect costs like loan interest and construction delays.

What additional fees should I expect beyond the CDC certifier fee?

Budget for the $47 Planning Portal fee, architectural plans, structural engineering, a registered survey, BASIX certificate, and any specialist reports your site requires (soil testing, bushfire assessment, stormwater). These consultant costs apply regardless of the approval pathway.

Does the CDC fee include inspections during construction?

It depends on the certifier. Some bundle the CDC, Principal Certifier appointment, and all inspections into one fee. Others charge separately. Always ask for a clear breakdown so you can compare quotes accurately.

Why do CDC prices vary between certifiers?

Pricing varies based on what’s included (CDC only vs full package), the certifier’s thoroughness (in-person inspections vs photo-based), project complexity, and location. A lower fee isn’t always better value if it means less thorough oversight.

Key takeaways

• CDC fees in NSW typically range from $1,500 to $5,000+, depending on project type and complexity.
• The NSW Planning Portal lodgement fee is $47 per application.
• Check whether quotes include the Principal Certifier appointment and inspections, or just the CDC assessment.
• The CDC pathway is usually cheaper overall than the DA plus CC route, both in direct fees and indirect costs.
• Consultant costs (plans, engineering, survey, BASIX, specialist reports) are additional and apply regardless of approval pathway.
• The cheapest certifier isn’t always the best value. Factor in the thoroughness of inspections when comparing quotes.