Complying Development Certificate Sydney — 10–15 Day Building Approvals in Western Sydney
CDC approval through a private certifier — no council queue, no neighbour notification. Buildana designs to compliance from day one.
HIA Member
MBA NSW0476 300 300Quick Answer
A Complying Development Certificate (CDC) is approved in 10–20 business days through a private certifier — no council, no neighbour notification. Buildana manages CDC approvals for granny flats, homes, duplexes, and renovations across Sydney with a 95%+ approval rate.
The Fastest Approval Pathway in NSW
A Complying Development Certificate (CDC) is the fastest way to get building approval in NSW. Issued by a private certifier — not council — a CDC can be determined in 10–20 business days. No neighbour notification. No planning panel. No council assessment queue.
If your project meets the standards in the State Environmental Planning Policy (Exempt and Complying Development Codes) 2008, you can bypass the DA process entirely. Granny flats, single dwellings, dual occupancies (in eligible R2 zones since July 2024), renovations, and some commercial alterations can all go through CDC.
Buildana manages CDC approvals across Sydney — including all 28 Sydney LGAs — from Western Sydney heartland (Fairfield, Liverpool, Cumberland, Canterbury-Bankstown, Blacktown) through to Parramatta, the Hills, Inner West, North Shore, Eastern Suburbs, Sutherland Shire and the Northern Beaches. We prepare all documentation, coordinate the private certifier, and ensure every standard is met before lodgement. Our CDC approval rate exceeds 95%.
Key advantage: CDC projects can start construction immediately upon determination — there's no appeal period. This alone can save 2–4 months compared to the DA pathway.
- 10–20 business day determination — no council queue
- No neighbour notification required
- Private certifier engagement and management
- Full SEPP compliance assessment before lodgement
- CDC for granny flats, homes, duplexes, renovations
- 95%+ approval rate across Sydney
- Construction can start immediately upon determination
- Cost-effective — typically $3,000–$8,000 for certifier fees
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
What Is a Complying Development Certificate?
A CDC is a combined planning and construction approval issued by a private certifier — not council. Under the State Environmental Planning Policy (Housing) 2021 and related codes, if your project meets every applicable standard exactly, the certifier must issue the approval. There is no subjective assessment, no neighbour notification, and no planning panel review.
Unlike a DA, a CDC is a merit-free process. If every box is ticked — setbacks, height, FSR, landscaped area, parking, design standards — the certificate is issued. This is what makes it fast: 10–15 business days from lodgement to determination.
Construction can commence immediately upon CDC determination. There is no appeal period and no conditions to negotiate. This alone saves 2–4 months compared to the DA pathway.
What Projects Are CDC-Eligible?
New Single Dwellings
New homes on eligible sites under the Housing Code. Must comply with all SEPP standards for height, setbacks, FSR, and design.
Granny Flats / Secondary Dwellings
Up to 60m² under SEPP (Housing) 2021 Part 2. One of the most common CDC applications in Western Sydney.
Duplexes / Dual Occupancies
Eligible R2 zones since the Low Rise Housing Diversity Code (July 2024) reforms. Must meet all SEPP standards for dual occupancy.
Home Extensions & Alterations
Under the Housing Alterations Code. Renovations, extensions, swimming pools, sheds, and ancillary structures.
What Makes a Site CDC-Ineligible?
Not every site qualifies for CDC. The following conditions typically require the DA pathway instead:
Heritage conservation area — DA required for any works
Bushfire attack level BAL-FZ or BAL-40+ — CDC may be restricted
Flood-affected land above flood planning level — council assessment required
Contaminated land requiring remediation
Specific LEP provisions — some councils have prohibited certain CDC works via their LEP
Sites with significant easements or access constraints
Buildana assesses every site for CDC eligibility before any money is spent. If your site doesn’t qualify, we’ll recommend the DA pathway and manage that process instead.
The SEPP Standards That Apply — in Plain English
CDC compliance is binary: meet every standard exactly, or approval is refused. Here are the key standards your design must satisfy:
Maximum Height
8.5m (2-storey) or as specified in the Housing Code for your project type.
Floor Space Ratio (FSR)
Sliding scale based on lot size. Determines maximum building footprint relative to your lot area.
Setbacks
Minimum distances from front, side, and rear boundaries. Varies by zone and lot dimensions.
Private Open Space
Minimum outdoor area required per dwelling. Must be usable, level, and accessible.
Landscaped Area
Minimum percentage of the lot must remain landscaped. Paving and hardstand do not count.
Car Parking
1–2 spaces per dwelling depending on size and location. Must comply with dimensional standards.
Any non-compliance = CDC refused. This is why Buildana designs to compliance from the first draft — not as an afterthought. Redesigns from wrong assumptions cost $15,000–$40,000.
CDC vs DA — Clear Comparison
| Factor | CDC | DA |
|---|---|---|
| Speed | 10–15 business days | 3–12 months (council dependent) |
| Assessed by | Private certifier | Council planning department |
| Neighbour notification | Not required | 14-day notification period |
| Design flexibility | Must comply exactly with SEPP standards | More flexibility — merit-based assessment |
| Cost (approval fees) | $3,000 – $8,000 | $5,000 – $15,000+ |
| Appeal period | None — construction starts immediately | Yes — third party appeals possible |
| Best for | Standard homes, granny flats, eligible duplexes | Heritage, flood, complex designs, commercial |
CDC Across Western Sydney
Each LGA has subtly different CDC conditions based on their LEP provisions. Buildana manages CDC approvals across all five:
Fairfield City Council
Fairfield LEP 2013. High CDC eligibility across R2 zones. Georges River flood mapping can restrict some sites — we check flood overlays first.
Liverpool City Council
Liverpool LEP 2008. Strong CDC uptake for granny flats and new dwellings. Flood mapping around Georges River and South Creek tributaries requires careful site assessment.
Cumberland City Council
Cumberland LEP 2021. Consolidated from Auburn, Holroyd, and Parramatta councils. Former industrial land in Auburn and Granville may require contamination assessment before CDC.
Canterbury-Bankstown Council
CB LEP 2023. Some heritage items in Canterbury and Campsie restrict CDC. TOD precincts near Bankstown Metro may override standard CDC provisions.
Blacktown City Council
Blacktown LEP 2015. Largest LGA by area. Bushfire risk areas in north Blacktown may restrict CDC eligibility. Greenfield areas (Marsden Park, Schofields) have specific CDC considerations.
May 2026 NSW CDC Approvals Update
Complying Development Certificates (CDC) under the State Environmental Planning Policy (Exempt and Complying Development Codes) 2008 remain the fastest residential approval pathway in NSW. Here's the May 2026 reality on what actually flies CDC and what doesn't.
Single-dwelling CDC.
Most new houses on Code-compliant blocks across Sydney metro can go CDC if they satisfy the prescriptive controls (setbacks, FSR, height, eaves, landscaped area, deep soil). Approval through a private certifier typically 7–21 days. About 60% of our 2025 single-dwelling jobs ran CDC.
Knockdown-rebuild CDC.
Same controls apply — but the demolition phase has 7-day adjoining-owner notification and asbestos clearance requirements that need to be sequenced before the CDC certificate can issue.
Granny flat CDC.
Under Affordable Rental Housing SEPP — up to 60sqm secondary dwelling on blocks ≥450sqm with 12m frontage. CDC issues in 14–28 days. Highest-success CDC pathway in 2026.
Where CDC fails.
Duplex/dual-occupancy on existing blocks — almost always needs DA because the Codes SEPP controls are too tight for real-world subdivided lots. Heritage conservation areas — CDC unavailable. Bushfire-prone land BAL-29+ — usually fails CDC controls. Riparian or flood-affected land — usually fails.
What's changed 2025–26.
Energy efficiency provisions under NCC 2025 added some additional CDC compliance checks (7-star NatHERS). BASIX 2024 stricter water and thermal performance — most new CDCs include the BASIX certificate as part of the package.
Buildana includes CDC certification scoping in every initial feasibility. Call 0476 300 300 or see /approvals/da for the alternative DA pathway. Also /insights/duplex-cdc-da-nsw for the duplex-specific comparison.
Have a question about your project?
Talk to our team — free site assessment and fixed-price quote.
How It Works
From First Call to Final Key
We assess your site against every CDC standard — zoning, lot size, setbacks, heritage, flood, bushfire, contamination. If CDC isn't viable, we tell you before any money is spent.
⏱Architectural plans, BASIX certificate, engineering, site survey, and all supporting documentation prepared to certifier requirements.
⏱We engage an accredited private certifier and lodge your CDC application with all required documentation.
⏱The certifier assesses compliance against the SEPP Codes. Typical timeframe: 10–20 business days. We manage any requests for information.
⏱Upon CDC determination, we proceed directly to construction. No appeal period — work can start immediately.
⏱Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
Estimate Your Build Cost
Use our free calculator to get an instant cost estimate for your project
Cost Guide
| Item | Estimated Range |
|---|---|
| Private certifier CDC fee | $3,000 – $8,000 |
| Architectural plans | $3,000 – $8,000 |
| BASIX certificate | $500 – $1,500 |
| Structural engineering | $2,000 – $5,000 |
| Survey | $1,500 – $3,000 |
| Soil / geotech report | $1,500 – $3,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
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Frequently Asked Questions
Buildana built our granny flat in just 12 weeks. Fast approvals, great communication, and a beautiful final product. Highly recommend.
Fatima Al-Rashid
Liverpool, NSW
We Build Across Sydney
Headquartered in Western Sydney's Fairfield. Active across all 28 metropolitan Sydney LGAs — from Penrith to the Eastern Suburbs, the Hills to the Sutherland Shire.
Last updated: 24 April 2026
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