Answer first: Before choosing Exempt, CDC or DA in NSW, classify the work under the NCC, confirm the BCA edition (NCC 2022 Amendment 2 for most CDC/CC lodgements from 29 July 2025), and check whether structure, fire, energy/BASIX, access and waterproofing can be shown as Deemed-to-Satisfy — or whether a Performance Solution will force another pathway or a heavier CC pack.
Author: Franz Phan, Senior Planning Consultant, giantA Pty Ltd · Updated 8 September 2026
Post 153 explains when Exempt, CDC or DA fits. This companion goes one layer deeper: the NCC clauses and documentation designers should check before pathway choice, so you do not design a Housing Code envelope that fails BCA Volume Two (or Volume One for Class 2) at CDC or Construction Certificate stage.
What NCC edition applies in NSW right now?
According to the NSW Government page How to comply with the National Construction Code (NCC) (last updated 13 May 2026):
- The current edition in NSW is NCC 2022 Amendment 2, which came into effect on 29 July 2025.
- NSW will adopt NCC 2025 on 1 May 2027, giving industry a longer lead-in while continuing to deliver housing.
- When applying the NCC you must also consider NSW-specific variations and requirements.
- All new building and new building work in NSW must comply with the NCC.
- Before issuing a Complying Development Certificate or Construction Certificate, the council or registered certifier must be satisfied that the plans and specifications comply with the relevant edition of the BCA.
ABCB’s NCC 2025 state and territory adoption information likewise lists NSW adoption of NCC 2025 from 1 May 2027. For live lodgements in September 2026, design and certify to NCC 2022 Amendment 2 unless your consent/certificate timing or NSW variation notes say otherwise — and plan projects that will lodge after May 2027 against the published NCC 2025 preview plus NSW variations as they are confirmed.
Official sources:
- NSW — How to comply with the NCC
- NSW ministerial release — NCC 2025 adoption 1 May 2027
- ABCB — NCC 2025 state and territory adoption
- ABCB / NCC free download
How do NCC volumes map to NSW residential pathways?
| Building / work type (typical) | Primary NCC volume | Planning pathway interface | When NCC is tested hard |
|---|---|---|---|
| Class 1 dwellings, townhouses, many small residential / non-habitable Class 10 structures | BCA Volume Two (+ ABCB Housing Provisions where referenced) | Exempt / Housing Code CDC / DA → then CDC itself or CC after DA | Exempt: DTS provisions must be met or the work leaves the exempt pathway. CDC/CC: certifier must be satisfied plans meet the relevant BCA edition. |
| Class 2–9 (e.g. apartments, mixed use) | BCA Volume One | Usually DA (or other applicable pathways) → Construction Certificate; CDC only where a code pathway exists and land/standards allow | CC / regulated design packages under the Design and Building Practitioners framework where applicable |
| Plumbing and drainage | Plumbing Code of Australia (Volume Three) | Alongside planning pathway; given effect through the Plumbing and Drainage Act 2011 | Licensed plumbing work and certification — not waived by Exempt/CDC/DA choice |
NSW Planning’s Guide to Complying Development is explicit that exempt development must satisfy all applicable development standards and the deemed-to-satisfy building provisions of the National Construction Code. If it does not, the work is no longer exempt and another pathway (CDC or DA) is required.
Designer pre-flight: NCC checklist before pathway choice
Use this table early — ideally at sketch / site analysis — not after the floor plan is frozen. It is a designer’s working checklist, not a substitute for the current NCC text, NSW variations, or your certifier’s assessment.
| Check theme | What to verify before choosing Exempt / CDC / DA | Why it changes the pathway or CC pack | Typical docs / pointers |
|---|---|---|---|
| 1. Classification & applicable volume | Confirm building class(es), storeys, and whether Volume One or Two (and Housing Provisions) apply. Note dual classifications early. | Wrong volume = wrong DTS set. Class 2 work brings Volume One fire, access and often DBP regulated-design obligations. | NCC Governing Requirements; site survey; proposed use schedule. Related: DBP Act guide. |
| 2. Structure | Map structural system (slab, footing, framing, retaining) to Performance Requirements and DTS / referenced standards. Flag steep sites, soft soils, pools, and large openings early. | Structural Performance Solutions, engineer involvement, or incomplete structural documentation can delay CDC (where engineering must be ready at lodgement) or CC after DA. | Structural engineer brief; geotech where needed; drawing notes referencing the applicable NCC structural provisions and Australian Standards your engineer nominates. |
| 3. Fire safety | For Class 1/10: bushfire overlay, construction type, and separation. For Class 2+: fire resistance, compartmentation, egress, detection/alarms as applicable to the class. | Bushfire or fire-engineered solutions often knock CDC eligibility or force DA + specialist reports. Class 2 fire documentation belongs in the CC / regulated design pack. | BAL assessment if bushfire-prone; fire engineer where Performance Solutions are contemplated. Related: Class 2 waterproofing/fire posts on giantA for apartment scopes. |
| 4. Energy efficiency / BASIX interface | Confirm whether BASIX applies (new dwellings; A&A above threshold). Read NSW energy variations: BASIX certificate version links which NCC energy provisions apply for Class 1 / Class 2. | Energy pathway mistakes (wrong NatHERS assumptions, missing “show on CC plans” BASIX items, ignoring NSW Part H6 / Section J notes) cause CDC/CC refusals even when planning standards pass. | NSW Planning — Guidance Material: NCC and BASIX (PDF); BASIX A&A guide; NatHERS overview. |
| 5. Accessibility | Confirm whether Disability (Access to Premises — Buildings) Standards / NCC access provisions apply to the class and works. NCC 2022 Amendment 2 included amendments aligning with amended Premises Standards. | Access Performance Solutions or late access consultants can derail CC for Class 2 and certain Class 1b / public-facing works. Do not assume “residential = no access”. | Access consultant brief for Class 2 / Class 1b where required; check current Premises Standards interface on the NSW NCC compliance page. |
| 6. Waterproofing & wet areas | Locate wet areas, external waterproofing, balconies, planter boxes and membranes early. For Class 2, coordinate with DBP waterproofing regulated designs where applicable. | Incomplete wet-area details are a classic CC defect and a common apartment remediation driver. CDC packages need construction-ready detailing, not sketch intentions. | Related: Class 2 waterproofing / DBP; NCC 2025 waterproofing horizon (May 2027). |
| 7. Health, amenity, light & ventilation | Check room heights, natural light/ventilation strategies, and any BASIX ventilation commitments that must appear on plans. | Ventilation and amenity failures force redesign; BASIX commitments that cannot be shown on CDC/CC plans fail certification. See BASIX ventilation changes 2026. | Plan notes; mechanical engineer where mechanical ventilation is the compliance path. |
| 8. Performance Solution vs DTS | List every departure from DTS. Decide early whether Performance Solutions are acceptable for your pathway and certifier. | Exempt development that cannot meet DTS is no longer exempt. CDC is a poor place to invent late Performance Solutions without documentation. DA + CC can host Performance Solutions if properly documented. | Performance-based design brief; A2 / Governing Requirements evidence methods; specialist reports. |
How should the checklist change for Exempt vs CDC vs DA?
Exempt development
Treat Exempt as the strictest early filter: the Codes SEPP development standards and NCC DTS provisions must both be satisfied. If structure, fire separation, bushfire construction, or wet-area detailing needs a Performance Solution, stop calling it exempt and move to CDC or DA. Keep a self-assessment pack (plans marked to standards, Section 10.7 certificate, title constraints).
Complying Development Certificate (CDC)
CDC combines planning approval and construction certification for code-compliant work. Practically, that means the architectural set must already support NCC assessment — not “we will detail that at CC later”. Engineering, BASIX items marked “show on CC plans”, stormwater, and any bushfire/flood construction standards required by the code need to be lodgement-ready. Timing published on the Planning Portal for many CDC pathways is as little as 20 days (and 10 days for Housing Pattern Book CDC) — but only if the package is complete. See Exempt vs CDC vs DA and Housing Pattern Book.
Development Application then Construction Certificate
DA separates planning merit from detailed BCA compliance. You can resolve envelope, heritage, and LEP/DCP issues at DA, then deepen NCC documentation at CC — but you should still run the checklist at concept stage so the approved envelope can actually be built under NCC 2022 Amendment 2 (and later NCC 2025 from 1 May 2027). Certifiers still must be satisfied the CC plans meet the relevant BCA edition before the certificate issues.
What belongs in a Construction Certificate documentation pack?
Exact lists vary by class, council and certifier. For dwellings and ancillary structures, council CC checklists commonly expect plans and specifications that demonstrate BCA Volume Two compliance, BASIX commitments shown on plans where required, and referenced performance standards. A designer-ready baseline:
- Architectural plans, elevations, sections and details coordinated to the consent / CDC conditions
- Specifications and schedules calling up the applicable NCC edition and key Australian Standards
- Structural drawings and certificates as required
- BASIX certificate and NatHERS outputs; every “show on CC plans” item drawn
- Wet-area / waterproofing details; bushfire construction details if applicable
- Any Performance Solution reports and evidence of acceptance method
- For Class 2 regulated building work: Design Compliance Declarations and regulated designs under the DBP framework where they apply
Do not invent fee figures or turnaround guarantees — confirm current council/certifier checklists and Planning Portal requirements for the project.
BASIX and NCC energy: what designers must not mix up
NSW Planning’s Guidance Material: National Construction Code and BASIX explains that the edition of NCC energy efficiency provisions applying to residential buildings is linked to the BASIX certificate version that applies to the development. In summary:
- Enhanced BASIX standards apply to all new residential buildings from 1 October 2023.
- New residential developments generally need to comply with the NSW energy efficiency provisions of NCC 2022 where the BASIX Certificate (excluding amended certificates) was issued on or after 1 October 2023.
- NSW NCC energy provisions of NCC 2019 Amendment 1 continue to apply to residential developments with a BASIX Certificate issued prior to 1 October 2023, or to alterations and additions that require a BASIX Certificate (per the guidance notes).
- For new Class 1 buildings on BASIX Version 4 or later, NSW Part H6 Performance Requirements (building fabric, sealing, services) apply in addition to BASIX, with DTS paths through the ABCB Housing Provisions (Parts 13.2, 13.4, 13.7 as varied for NSW). Parts of Housing Provisions that BASIX already regulates do not apply in NSW as noted in that guidance.
- For new Class 2 / Class 4 parts on BASIX Version 4 or later, NSW variations to Section J Performance Requirements (including fabric, sealing, services, and NSW renewable / EV facilities provisions as applicable) apply in addition to BASIX.
Designer takeaway: lock BASIX assumptions with the energy assessor before CDC lodgement or before CC — and before you promise a pathway based on an envelope that cannot meet fabric or sealing DTS.
Practical process giantA uses on residential jobs
- Constraint pack: Section 10.7 certificate, title, survey, overlays — see Section 10.7 guide.
- Pathway screen: Codes SEPP land and standards test (Exempt / Housing Code CDC / DA).
- NCC pre-flight: run the checklist table above; flag Performance Solutions and specialist reports.
- Energy coordination: BASIX / NatHERS with plan commitments that can be drawn.
- Documentation depth: CDC-ready construction detail if CDC; or DA set then CC pack if DA.
- Certifier dialogue: confirm edition (NCC 2022 Amendment 2 today; plan for NCC 2025 from 1 May 2027) and NSW variations.
We prepare approvals-ready residential documentation across Greater Sydney — renovations, extensions, dual occupancy, secondary dwellings and new houses — with the same discipline we apply to Class 2 regulated work.
FAQ: NCC triggers and NSW pathways
Does choosing CDC mean I can ignore the NCC until construction?
No. A CDC is both planning approval and construction certification for complying work. The certifier must be satisfied the plans and specifications comply with the relevant BCA edition before the CDC is issued.
Can exempt work use a Performance Solution under the NCC?
Exempt development must satisfy the deemed-to-satisfy building provisions of the NCC as well as the Codes SEPP standards. If DTS cannot be met, the work is no longer exempt and you need CDC or DA.
Which NCC edition should I put on drawings lodged in late 2026?
NSW’s current edition is NCC 2022 Amendment 2 (in effect from 29 July 2025). NSW adopts NCC 2025 on 1 May 2027. Confirm the edition applying to your specific CDC or CC lodgement date and any transitional notes with your certifier.
How does BASIX relate to NCC Part H6 / Section J?
In NSW, BASIX and NCC energy provisions both apply, with the applicable NCC energy edition linked to the BASIX certificate version. Follow NSW Planning’s NCC and BASIX guidance material and the NSW variations in the NCC — do not assume national DTS energy clauses apply unchanged.
Where do accessibility requirements fit for a house versus apartments?
Access obligations depend on building class and the Premises Standards / NCC access provisions. Class 2 work commonly needs formal access compliance evidence at CC. Always check the class-specific requirements rather than assuming Class 1 houses have no access interface — especially for Class 1b or buildings with public areas.
What should I prepare differently for Class 2?
Use BCA Volume One, plan for fire and waterproofing documentation depth, and check Design and Building Practitioners Act regulated-design obligations. See giantA’s DBP and Class 2 waterproofing guides linked above.
Need an NCC-aware pathway check before you draw? Contact giantA.com.au for residential design and approvals documentation in Sydney and NSW. We map Exempt / CDC / DA against NCC 2022 Amendment 2 requirements — and help you plan for NSW’s NCC 2025 adoption from 1 May 2027 — before the envelope is locked.
This article is general information for NSW designers and homeowners. It is not legal advice. Always confirm the current NCC text (including NSW variations), Codes SEPP, EP&A Act/Regulation settings, BASIX rules, and your certifier or council checklist before acting. Edition dates cited from NSW Government and ABCB public pages as at research on 8 September 2026.