CDC vs DA in Blacktown
**CDC (Complying Development Certificate):** • 10–15 business day approval via private certifier • Suitable for: Single dwellings, granny flats, simple alterations • Cost: $3,000–$8,000 • Must comply with ALL SEPP standards • Available across most R2, R3, R4 zones
**DA (Development Application):** • 50–100+ business day assessment • Required for: Duplexes, townhouses, boarding houses, non-complying designs • Cost: $8,000–$25,000 (fees + consultant reports) • Assessed against LEP + DCP requirements • Neighbour notification required
**Pre-DA advice service:** • Blacktown offers a paid pre-DA service ($500–$2,000) • Provides written feedback from assessment planner • Highly recommended for complex projects • Can identify issues that would otherwise cause 4–8 week delays
Key DCP Controls for Blacktown
Blacktown's DCP has specific controls that affect residential development:
**Setbacks:** • Front: 5.5m–6.5m (varies by lot width) • Side: 0.9m ground floor, 1.5m upper floor • Rear: 6m to habitable rooms, 3m to non-habitable
**Site coverage:** R2: 50%, R3: 50–55%
**FSR:** R2: 0.5:1, R3: 0.6–0.8:1
**Private open space:** 24m² per dwelling (minimum 4m dimension)
**Car parking:** • 1 space per 1-2 bed dwelling • 2 spaces per 3+ bed dwelling • Visitor: 1 per 4 dwellings for multi-dwelling
**Landscaping:** 30% minimum
**Specific Blacktown controls:** • Solar access: Living rooms and 50% of private open space must receive minimum 3 hours direct sunlight at mid-winter • Acoustic requirements for properties near main roads (>20,000 vehicles/day) or rail corridors • Basalt zones in northwestern suburbs may require specific foundation design
DA Documentation Checklist
A complete DA submission to Blacktown Council requires:
**Standard requirements:** • DA application form (via NSW Planning Portal) • Architectural plans — site plan, floor plans, elevations, sections: $15,000–$30,000 • Statement of Environmental Effects: $3,000–$6,000 • Survey plan (within 5 years): $2,500–$4,000 • BASIX certificate: $500–$1,500 • Geotechnical/soil report: $2,000–$4,000 • Stormwater management plan: $2,000–$4,000 • Landscape plan: $1,500–$3,000
**Conditional requirements:** • Traffic impact assessment (5+ dwellings): $3,000–$8,000 • Acoustic assessment (near transport corridors): $3,000–$6,000 • Arborist report (significant trees): $1,500–$3,000 • Aboriginal heritage assessment (specific sites): $3,000–$8,000 • Contamination assessment: $5,000–$15,000
**Council fees:** • DA fee: Based on estimated construction cost ($5,000–$15,000) • Section 7.11 contributions: $15,000–$30,000 per new dwelling • Long Service Levy: 0.25% of construction cost
Tips for Successful Blacktown DA Approvals
Based on Buildana's extensive experience with Blacktown Council:
**1. Use the pre-DA service** — Blacktown's planners provide valuable written feedback that can prevent costly redesigns.
**2. Design for solar access** — Blacktown assessors are particularly focused on solar access to living areas and open space. Non-compliant solar access is a common refusal reason.
**3. Don't under-park** — Blacktown enforces parking rates strictly. Ensure every dwelling has compliant parking including dimensions.
**4. Submit complete packages** — Blacktown's high volume means incomplete applications get parked. Every missing report adds 4–6 weeks.
**5. Engage on stormwater early** — Blacktown has specific stormwater management requirements including on-site detention for developments increasing impervious area.
**6. Respect street character** — For established suburbs, Blacktown assessors look for designs that respond to the existing streetscape — varied materials, roof forms, and landscaping.
Buildana manages DA approvals across Blacktown LGA for every project we build. Our knowledge of this council's assessment preferences gives our clients a significant advantage. Call 0476 300 300 to discuss your Blacktown development project.
Buildana builds across Sydney. Visit /approvals/cdc to learn more or /approvals/da to discuss your project.



