NSW Approval Pathways in 2026: DA vs CDC vs Construction Certificate

In NSW, a Complying Development Certificate (CDC) is the fastest approval pathway at 20 days (or 10 days if you use a NSW Housing Pattern Book design), a Development Application (DA) through council averages 70 to 90 days, and a Construction Certificate (CC) is a separate follow-on approval required after a DA before you can start work. The NSW Government has also just brought in the Development Coordination Authority (DCA) as a single point of state agency input from 1 July 2026, and the Building (Approvals and Practitioners) Bill 2026 (which will replace the Construction Certificate and Occupation Certificate system) has passed the Legislative Assembly and is currently before the Legislative Council. The right pathway depends on your project fitting the Codes SEPP standards, not on which pathway sounds better.

I've been building homes in the ACT for 19 years and running Rentoule Projects for the last 5. We hold both an ACT builder's licence (20211145) and a NSW builder's licence (453726C), which means Queanbeyan, Bungendore, Yass and southern NSW clients are a regular part of what we do. The NSW approval framework is different enough to the ACT that the honest answer to "how long will this take?" and "how much will it cost?" changes materially depending on which side of the border your block sits. This guide is the plain-English version I give clients before we start the paperwork.

The five NSW approval pathways

1. Exempt Development (no approval needed)

Some minor works do not need any planning approval at all. This is governed by the State Environmental Planning Policy (Exempt and Complying Development Codes) 2008, commonly called the Codes SEPP. Examples include most internal alterations that do not change the building fabric, small garden sheds under specific size limits, low fences, and some minor landscaping. Every project needs to be checked against the specific Codes SEPP criteria for that type of work, because "exempt" only applies if you tick every box. Get one wrong and you are back in either CDC or DA territory.

2. Complying Development Certificate (CDC)

This is the fast-track pathway for straightforward development that meets pre-set standards under the Codes SEPP. The certificate is a combined planning and construction approval, so if you get a CDC you do not need a separate Construction Certificate.

• Timeframe: 20 business days for standard complying development, 10 business days for a Pattern Book design (see below).
• Assessed by: An accredited private certifier or the local council.
• Neighbour notification: 14 days for standard CDC, 7 days for Pattern Book.
• Cost: Typically $3,000 to $6,000 for the certifier's fee (excluding your design and consultant costs).
• Assessment style: Pass or fail against the Codes SEPP standards. There is no merit assessment, no room for interpretation, and no neighbour objection rights.

The catch: your project has to meet every single Codes SEPP standard. Setbacks, height, floor space ratio, landscaping, BASIX, all of it. Miss one and you cannot use CDC. In practical terms, CDC works well for standard new homes on straightforward blocks, secondary dwellings (granny flats), single-storey extensions, and small alterations. It rarely works for anything on a heritage-affected block, in a conservation area, on flood-prone or bushfire-prone land above a certain risk level, or where the design departs from the standards in any way.

3. Development Application (DA)

The DA pathway is for anything that does not fit the CDC criteria. Applications go to your local council and are assessed on their merits against the applicable Local Environmental Plan (LEP), Development Control Plan (DCP), and other planning controls. Council planners weigh the proposal against the objectives of the zone and can approve it, refuse it, or approve it with conditions.

• Timeframe: 40 to 90 days is common, with the NSW-wide average sitting around 70 to 80 days for standard residential. Complex or contested applications can run 6 to 12 months.
• Assessed by: The local council (or, for larger projects, the Local Planning Panel).
• Neighbour notification: 14 to 28 days depending on the development type and the local plan.
• Cost: Council application fees are calculated on the cost of works, and consultant and design costs stack on top. Budget several thousand to tens of thousands depending on complexity.
• Assessment style: Merit-based. The planner can consider context, character, and impact, and neighbours have formal rights to object.

The NSW Government's stated 2026 target for low-rise residential DAs is 50 days or less, but that is a target, not a guarantee. Requests for information (RFIs) are common and can add two to four weeks per round if your consultant is slow to respond.

4. Construction Certificate (CC)

This is the technical follow-on approval you need after a DA is approved but before you can start building. The CC confirms that the detailed construction drawings comply with both the DA consent conditions and the National Construction Code (NCC).

• Timeframe: 2 to 4 weeks for straightforward residential once complete construction drawings are lodged. 5 to 10 business days is achievable with a good private certifier and a complete package.
• Assessed by: An accredited private certifier or council (usually private for speed).
• Cost: Depends on project size and complexity, typically $2,000 to $8,000 for residential.

If you go the CDC route you do not need a separate CC (the CDC already covers both). If you go the DA route you always need a CC before any construction work starts.

5. State Significant Development + Housing Delivery Authority (HDA)

For large projects (over $60 million capital investment, or specific SEPP-declared categories), assessment is done by the NSW Government rather than council. The Housing Delivery Authority is a permanent fast-track pathway for major residential projects. Most homeowners will never touch this pathway, but it is worth knowing exists because the political focus on the HDA (announced 7 July 2026 as permanent, adding close to 4,000 more homes to the pipeline on 31 July) explains why the broader planning reform push is happening.

Which pathway fits which project

Here is how I think about it when I sit down with a client for the first time.

CDC likely works

• Standard new single-dwelling home on an R1, R2 or R3 block that fits the Codes SEPP setbacks, height and site coverage
• Secondary dwelling (granny flat) on a compliant block under 900 square metres, single storey, meeting the standard bedroom count and floor area caps
• Single-storey rear extension that fits within the setback and height envelope
• Dual occupancy on an R2 block where the block width, area and design all comply with the Low-Rise Housing Diversity Code
• Alterations that do not change the building envelope

DA is required

• Any project on a heritage-listed lot or within a heritage conservation area
• Any project that departs from a Codes SEPP standard (even by a small amount)
• Extensions that push over the height plane, over the site coverage cap, or into a setback
• Any project on a flood-prone or bushfire-prone block above the specific SEPP thresholds
• Multi-storey extensions or knockdown rebuilds on blocks that do not fit the low-rise diversity code
• Anything that requires state agency input (Transport for NSW, Water NSW, Rural Fire Service, Heritage NSW)
• Any custom design where the design is the point (which is most of what we do at Rentoule Projects)

When you might use both together

Sometimes a single project has one part that can be CDC (the granny flat) and another part that needs DA (moving the main house driveway). In these cases you either lodge them separately (CDC for the granny flat, DA for the main house works) or wrap the lot into a single DA. Which approach is faster depends on the specific mix.

The 2026 changes you should actually care about

Development Coordination Authority (DCA) - live from 1 July 2026

This is the most substantive change already in force. Before 1 July 2026, if your DA needed input from state agencies (Transport for NSW, Water NSW, Rural Fire Service, Heritage NSW, EPA, and up to 22 different agencies depending on the project) you or your council had to chase each one separately. Response times varied. Some agencies would take months. That is what the DCA is designed to fix.

From 1 July 2026, the DCA provides a single coordinated response to referrals that previously went to up to 22 different areas across NSW Government (NSW Planning Portal, 1 July 2026). Key features:

• A single point of contact for state agency input across up to 14 government agencies
• Standard 28-day timeframe for the DCA to provide a coordinated response, from formal referral request and fees paid
• A 2-business-day pre-check on whether formal state referral is even required
• Consolidated fee structure: $1,100 for statutory referral, $550 for statutory input on complex modification applications
• Applies to all new DAs lodged from 1 July 2026 that trigger state agency input

The DCA is not the consent authority. Your council still makes the final decision on your DA. What the DCA does is give the council (and you) a single, coordinated state response instead of a stack of separate agency letters. For projects that previously stalled because one obscure agency did not respond, this change is meaningful. For projects that never needed state input in the first place, it changes nothing.

Building (Approvals and Practitioners) Bill 2026 - passed Legislative Assembly, currently before Legislative Council

This Bill would replace the current construction certificate and occupation certificate system with new "Building Approval" and "Completion Approval" categories, and formally recognise prefabricated and modular construction in the approval regime for the first time. It would also consolidate the Design and Building Practitioners Act 2020 and the Building and Development Certifiers Act 2018 into a single Act administered by Building Commission NSW.

Status as at the time of writing: the Bill passed the Legislative Assembly on 28 May 2026, was introduced to the Legislative Council the same day, second reading speech was given 23 June 2026, and it remains before the Committee of the Whole in the Legislative Council (NSW Parliament Bill 2026 tracking page). Even once it receives royal assent, most provisions do not commence until regulations are written, which could be 6 to 12 months away. Only the modular construction provisions take effect on the date of assent.

What this means for a homeowner planning a build in 2026: the current CC/OC system still applies. Nothing has changed for your project yet. Watch this space over the next 12 to 18 months.

Proposed Complying Development variations pathway (consultation closed, not yet in force)

The NSW Government held public exhibition between 14 May and 24 June 2026 on a proposed CDC variations pathway that would let projects with minor departures from Codes SEPP standards (up to 3 or 4 standards, low-impact) be assessed by council within 10 to 20 calendar days instead of forcing them into the full DA system. Consultation closed 24 June 2026, DPHI is reviewing submissions, and commencement is expected during Q3 2026, subject to finalisation (NSW Planning Portal complying development page, updated 25 June 2026).

If it commences, this would meaningfully expand the CDC-eligible universe by catching projects that are "nearly compliant" today. Not law yet. Keep watching.

NSW Housing Pattern Book (already live)

The Pattern Book Development Code came into effect during 2025 and offers 10-day CDC approval for pre-approved designs from the NSW Housing Pattern Book. Neighbour notification is reduced to 7 days. This is different to the ACT's Canberra House Pattern Book which is still being developed. For NSW clients considering a standard-tier new home who are prepared to use one of the pre-approved designs, this pathway can compress the front end by six to eight weeks.

Practical builder view for cross-border ACT-NSW clients

If you own property in Queanbeyan, Jerrabomberra, Googong, Bungendore, Yass, or anywhere else in southern NSW and you have been researching Canberra builders, here is the short version of what actually changes when you cross the border:

Different approval framework. The ACT does not have CDC or DA in the same form. ACT uses Development Applications assessed by Access Canberra with a different set of criteria and timeframes (usually 6 to 12 weeks for residential). NSW's CDC pathway does not exist in the ACT. If your block is in NSW, we assess CDC first because if it works, the timeline saving is real.

Different NCC application. Both states apply the same National Construction Code, but the ACT has additional energy efficiency (EER) requirements that do not apply in NSW. NSW has BASIX requirements that do not apply in the ACT. Neither is inherently harder, they are just different, and quotes need to reflect the right requirements.

Different builder licensing. A builder needs to hold the right licence for the state they are working in. We hold both because we work both sides. If your builder only holds one state's licence, they legally cannot build across the border, no matter what they say. Ask to see the licence.

Different LVC and duty regimes. The ACT has the Lease Variation Charge (which just got its Missing Middle 50 percent reduction pathway confirmed on 29 June, see our Missing Middle article). NSW does not have LVC. NSW has land tax and stamp duty that operate differently. If you are comparing feasibilities on both sides of the border, the tax picture is a real variable, not just the build cost.

What we do first when a NSW client calls. We check the block against the Codes SEPP. If it clears every standard, we assess whether CDC (or Pattern Book CDC) makes sense. If it does, that is usually the recommendation because the 20-day (or 10-day) certainty is worth a lot. If any part of the project departs from the Codes SEPP, we plan for a DA and budget the extra 8 to 12 weeks. If state agency input is required (bushfire, heritage, transport, water), the new DCA framework applies and the referral timing is 28 days rather than the previous open-ended wait.

What we do NOT do

We do not chase CDC when the design does not fit. Some builders will squeeze a design into Codes SEPP standards to save time, and the result is a home that does not fit the block or the family. That is the wrong reason to compromise the design. If a project needs a DA because the design is the point, we plan for the DA. If it fits the CDC criteria naturally, we use CDC. The pathway serves the project, not the other way around.

Frequently asked questions

Talk to a builder who works both sides of the border

If you own a block in Queanbeyan, Jerrabomberra, Googong, Bungendore, Yass, or elsewhere in southern NSW, and you want an honest read on which approval pathway makes sense before you commit to a design, get in touch. Coffee's on me. I would rather sit down with you for half an hour to work out whether your block is a CDC candidate than watch you spend six months in a DA queue when it did not need to be there. For a broader view of what a residential project involves from feasibility through to handover, our renovation planning guide and knockdown rebuild service pages walk through the full sequence.