Granny Flat Builder Blacktown — Secondary Dwellings from $150K
Fixed-price granny flat construction in Blacktown 2148. CDC fast-track approval. Blacktown City Council compliant. 1-bed and 2-bed designs. Free site assessment.
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A granny flat in Blacktown costs $150,000–$300,000+ depending on size and finishes. 1-bed from $150K, 2-bed from $200K. CDC fast-track approval in 10–15 business days. Buildana manages design, Blacktown City Council approval and fixed-price construction.
Granny Flat Builder in Blacktown
Blacktown LGA has some of Sydney's most granny-flat-friendly blocks — wide R2-zoned lots from the 1960s–1980s with ample rear yard space. Blacktown City Council supports secondary dwelling construction through CDC and DA pathways, and the suburb's strong rental market means granny flats here achieve excellent returns. Buildana has completed numerous granny flats across Blacktown and neighbouring Seven Hills, Prospect, and Lalor Park.
Buildana manages the full granny flat process in Blacktown — from site assessment and CDC fast-track approval through to fixed-price construction and handover. We build studio, 1-bedroom, and 2-bedroom designs up to the NSW maximum of 60m².
Read our Complete Granny Flat Guide or explore granny flat builds across Sydney.
- Granny flats in Blacktown from $150K
- CDC fast-track approval (10–15 business days)
- 550–750m² blocks — most qualify for 60m² granny flat
- Blacktown zoned R2 Low Density & R3 Medium Density
- Fixed-price contract — design to handover
- Class M–H soil — engineered slab included
- Rental yield $370–$500/week in Blacktown
- Free site assessment — near Blacktown station
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 inspect your Blacktown block — lot size (typical 550–750m²), setbacks, services, access, Class M–H soil check and Blacktown City Council requirements. You'll know if a granny flat is feasible before spending a dollar.
⏱Choose from our proven designs or customise: studio, 1-bed, or 2-bed up to 60m². Floor plans designed for Blacktown's 550–750m² blocks with correct setbacks.
⏱CDC fast-track (10–15 business days) or DA through Blacktown City Council if required. Blacktown is zoned R2 Low Density & R3 Medium Density. All documentation prepared and lodged by Buildana.
⏱Fixed-price build from engineered slab (Class M–H) to handover. Typical construction: 10–16 weeks. Milestone updates from your project manager.
⏱Final inspection, Occupation Certificate, 6-year structural warranty, keys. Separate services connected and metered. Rental yield $370–$500/week in Blacktown.
⏱Quality Promise
Every Buildana granny flat in Blacktown is built under a fixed-price contract with full Blacktown City Council compliance and a 6-year structural warranty.
Our Team
Oliver Alameri
Founder / Director / Builder
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 |
|---|---|
| Studio (25–35m²) | $120,000 – $170,000 |
| 1-bed granny flat (35–45m²) | $150,000 – $210,000 |
| 2-bed granny flat (50–60m²) | $200,000 – $300,000 |
| Site preparation / excavation | $5,000 – $20,000 |
| Service connections | $5,000 – $15,000 |
| Landscaping and external | $5,000 – $15,000 |
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
Buildana builds across greater Sydney — with deep roots in Western Sydney's Fairfield, Liverpool, Cumberland, Canterbury-Bankstown, and Blacktown LGAs.
Last updated: 1 July 2025
Build a Granny Flat in Blacktown
Free site assessment for Blacktown 2148. We'll check your block, recommend the best design, and provide a fixed-price quote.
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