Turramurra Duplex Builder — Western Sydney Dual Occupancy
Buildana is a local Ku-ring-gai duplex builder. We know which Turramurra streets support Torrens title subdivision, which suit strata, and what Ku-ring-gai Council will approve. Free site feasibility.
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A duplex in Turramurra costs $750,000–$1,500,000+ for dual occupancy construction. Attached duplex from $750K, detached from $1M. Buildana manages feasibility, Ku-ring-gai Council approvals, construction and subdivision under one fixed-price contract.
Duplex Builder in Turramurra
A duplex in Turramurra is rarely on the table, and the block sizes are why. Ku-ring-gai requires 1,200m2 for dual occupancy, and typical Turramurra lots run 700 to 1,100m2, so most simply do not reach the threshold. Add the Heritage Conservation Areas around the village and a $2.8M to $4.2M market, and the realistic play on most blocks here is a single knockdown-rebuild, not a duplex.
Where an unusually large 1,200m2-plus block sits outside a conservation area, a dual-occupancy can be considered, generally as a family hold. The ground grades moderately reactive on the ridge with wetter E pockets near the drainage lines, so footings and the slab are engineered to suit, and heritage streets are approached with Council's streetscape controls in mind.
What I would check first on your Turramurra block: the exact area against 1,200m2, because most fall short, then the heritage status.
We build these fixed-price, licence HBL 487805C. Send me the block and I will tell you honestly whether a duplex is even possible or a single home is the call.
Buildana manages the full duplex development process in Turramurra — from feasibility assessment and architectural design through to DA or CDC approval, and fixed-price construction to dual handover. One builder, one contract, two homes.
Read our Complete Duplex Building Guide or explore duplex developments across Sydney.
- Dual occupancy in Turramurra from $750K
- Ku-ring-gai Council DA and CDC approvals managed
- R2 zoning — eligible under July 2024 reform
- Minimum lot size 1,200m² in Turramurra
- Class M soil — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near Turramurra station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Most lots fall short of 1,200m2
Ku-ring-gai needs 1,200m2 for dual occupancy, and typical Turramurra lots run 700 to 1,100m2, so most do not reach it.
Heritage Conservation Areas around the village narrow the options further on certain streets.
Single home is usually the play
At a $2.8M to $4.2M market, a single knockdown-rebuild is the realistic move on most Turramurra blocks.
The ground grades moderately reactive on the ridge with wetter E pockets near drainage lines, engineered to suit.
Duplex builder in Turramurra — key facts
- Suburb
- Turramurra, NSW 2074
- Council / LGA
- Ku-ring-gai Council (Ku-ring-gai)
- Primary zoning
- R2 Low Density
- Typical lot size
- 700–1,100m²
- Soil class
- Class M
- Median house price
- $2.8M–$4.2M
- Home era
- 1920s–1960s
- Typical price range
- $750,000 – $1,500,000+
- Typical timeline
- 14–22 months design to handover
- Approval pathway
- CDC for compliant dual-occupancy, else DA
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.
Cost Guide
| Item | Estimated Range |
|---|---|
| Attached duplex (2 × 180–220m²) | $950,000 – $1,260,000 |
| Attached duplex (2 × 220–260m²) | $1,260,000 – $1,640,000 |
| Detached duplex (2 × 220–280m²) | $1,510,000 – $1,950,000 |
| Strata/Torrens subdivision | $19,000 – $38,000 |
| Demolition (if KDR duplex) | $23,000 – $50,000 |
| Council contributions | $13,000 – $76,000+ |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. We assess your Turramurra block — lot size (typical 700–1,100m²), width, R2 Low Density zoning, setbacks, FSR, landscaped area requirements under Ku-ring-gai Council's LEP and DCP. Minimum lot for duplex: 1,200m². You'll know viability before spending on design. Design phase covers unit layout, access, parking, private open space, and waste management for dual occupancy on your Turramurra site. You approve final plans before we move to lodgement.
⏱The Turramurra construction phase. Fixed price, programmed, supervised. Duplex approvals get scrutinised harder than single dwellings — neighbour notification, overshadowing, privacy, traffic, waste. Our SEE addresses each on the front foot rather than reactively. Cleaner submission, fewer conditions, faster CC. Fixed-price construction of both dwellings from slab to keys. Class M engineered footings, frame, lock-up, internal fit-out, and external works. Weekly progress reports.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Subdivision registration starts in parallel with final fitout so titles issue close to handover, not 6 months after. Buildana coordinates the surveyor and Ku-ring-gai Council clearance — important if you're planning to sell one side immediately to fund the next move.
⏱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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Last updated: 1 July 2025
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