Licensed Granny Flat Specialist Northwood
NSW licensed builder delivering SEPP-compliant granny flats across Northwood 2066. BASIX, engineered slab (Class M), full certifier sign-off and 6-year structural warranty.
HIA Member
MBA NSW0476 300 300Quick Answer
A granny flat in Northwood 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, Lane Cove Council approval and fixed-price construction.
Granny Flats Designed for Northwood Blocks
A granny flat builder in Northwood works with a tightly-held harbour enclave where a secondary dwelling is about family or high-end use, not budget yield. The Federation and inter-war stock sits on 600 to 1,400m² blocks, so clearing the 450m² threshold for a 60m² secondary dwelling under the Housing SEPP is never the issue. Heritage Conservation Areas cover virtually all streets, and the harbour fall and sandstone shape the build.
The sandstone-dominant ground behaves for the slab off geotech, though the substantial fall to Woodford Bay can add engineering and rock excavation. Where the older home has fibro, a licensed asbestos strip-out comes first if demolition is involved. The protected harbour outlook makes a well-built secondary dwelling here genuinely desirable.
What I check first on your Northwood block: whether you sit inside a Heritage Conservation Area, the harbour fall and rock, and the rear-yard access. Those decide the build and the price.
We build fixed-price, licence HBL 487805C. Get our granny flat feasibility before you commit.
Buildana manages the full granny flat process in Northwood — 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 Northwood from $150K
- CDC fast-track approval (10–15 business days)
- 600–1,400m² blocks — most qualify for 60m² granny flat
- Northwood zoned R2 Low Density / R3 Medium (Lane Cove village)
- Fixed-price contract — design to handover
- M — engineered slab included
- Rental yield $650–$900/week in Northwood
- Free site assessment — near Wollstonecraft (3 km, ferry from Longueville) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
A premium harbour secondary dwelling
Northwood is a tightly-held harbour enclave, and a granny flat here is about extended family living or high-end use rather than budget yield. The 600 to 1,400m² blocks clear the 450m² Housing SEPP threshold easily, so land size is never the issue. The value is in building the secondary dwelling to match the setting and, where the block allows, taking the protected Woodford Bay outlook.
Heritage Conservation Areas cover virtually every Northwood street, so on a contributing home the heritage layer heavily shapes what you build. I check that on your exact block first.
Harbour fall, rock and sandstone
The Northwood ground is sandstone-dominant, which behaves for the slab off geotech, but the substantial fall to the water can add engineering and rock excavation, which on a small granny flat footprint is proportionally large. I price the fall and the rock from a real geotech rather than assuming, so a Northwood secondary dwelling builds predictably and holds the value the location commands.
Granny flat builder in Northwood — key facts
- Suburb
- Northwood, NSW 2066
- Council / LGA
- Lane Cove Council (Lane Cove)
- Primary zoning
- R2 Low Density
- Typical lot size
- 600–1,400m²
- Soil class
- M
- Median house price
- $4.0M–$8.0M
- Home era
- 1880s–1940s heritage
- Typical price range
- $150,000 – $300,000+
- Typical timeline
- 4–6 months design to handover
- Approval pathway
- CDC via NSW Affordable Rental Housing SEPP (10–15 days)
Want a real number for YOUR block — not a generic estimate?
Free site assessment, fixed-price contract, line-itemised quote within 48 hours. No high-pressure sales — just a real builder talking real numbers.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. Site visit to your Northwood block to check feasibility — lot dimensions, sewer and stormwater locations, driveway access, and Lane Cove Council's setback and landscape requirements. Written feasibility report within 3 business days. Design pulls from a library of plans we've refined over years of Northwood-area builds, then adapts to your specific block constraints. Faster than starting from scratch, better than buying a stock plan that doesn't suit the site.
⏱The Northwood construction phase. Fixed price, programmed, supervised. Most Northwood granny flats qualify for CDC — faster and simpler than DA. Buildana prepares all documentation, lodges with the certifier, and obtains the Construction Certificate. Typical turnaround: 2–3 weeks. Construction in your back yard means coordinating site access, material delivery, and trade movement around the existing house. Buildana plans the build to keep main-house disruption to a few hours per week, not constant noise and dust.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Final inspection, Occupation Certificate, keys, and maintenance guide. Ready for tenants or family. Rental potential: $650–$900/week per week.
⏱Quality Promise
Every Buildana granny flat in Northwood is built under a fixed-price contract with full Northwood council compliance and a 6-year structural warranty.
Cost Guide
| Item | Estimated Range |
|---|---|
| Studio (35m²) | $180,000 – $230,000 |
| 1-bedroom (40–45m²) | $220,000 – $270,000 |
| 2-bedroom (55m²) | $260,000 – $320,000 |
| Full 60m² maximum | $270,000 – $340,000 |
| Separate meter install | $3,000 – $8,000 |
| Landscaping and path tie-in | $4,000 – $16,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
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Still got questions? Talk to Oliver directly.
30-min free call — bring your block, your brief, your budget. We'll map out feasibility, timeline, and realistic cost. No sales pitch.
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
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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: 1 July 2025
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