Duplex Builder North Turramurra — From $750K Fixed Price
Fixed-price duplex construction in North Turramurra 2074. Two dwellings, one contract, no variations. Minimum lot 1,200m². Free feasibility.
HIA Member
MBA NSW0476 300 300Dual Occupancy Developments in North Turramurra
A duplex in North Turramurra is unusual: the blocks are big enough, but bushfire is the real gatekeeper. These bush-edge parcels run 1,000 to 2,000m², so they clear even Ku-ring-gai's high 1,200m² dual-occupancy minimum on the larger blocks, which is rare for the area. The catch is that most of the suburb carries a BAL rating from 12.5 up to Flame Zone against Ku-ring-gai Chase National Park, and that drives the whole build.
The bushfire spec sets the glazing, cladding, screening and the asset protection zones, and on a Flame Zone parcel it is a different build again. Underneath, the Hawkesbury Sandstone can bring rock excavation for the two slabs. Both need pricing from real assessments rather than a guess.
What I check first on your North Turramurra block: the BAL assessment, whether the block clears the 1,200m² minimum, and the depth to rock. Those decide both feasibility and price.
We build fixed-price, licence HBL 487805C. Get our site-yield feasibility before you commit.
Buildana manages the full duplex development process in North 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 North 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 North 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 (3 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Big blocks, but bushfire runs the build
North Turramurra is one of the few Ku-ring-gai pockets where the blocks are genuinely big enough for a duplex. At 1,000 to 2,000m², the larger parcels clear the council's high 1,200m² dual-occupancy minimum, which rules out most of the LGA. So here, unusually, land size is not the thing that stops a duplex. Bushfire is.
Most of the suburb sits BAL-12.5 up to Flame Zone against Ku-ring-gai Chase National Park. A BAL-29 or BAL-40 build carries toughened glazing, ember screening and non-combustible cladding across both dwellings, and the asset protection zones eat into the buildable area. That is the real design and cost driver, and I price it from the actual assessment.
Placing two dwellings around the APZ and rock
On a bushfire block the asset protection zone shapes where the two dwellings and their separation can sit, so fitting them takes real site planning rather than a standard template. On these large North Turramurra parcels there is usually room to do it well. Add the Hawkesbury Sandstone, which can bring rock excavation for the slabs, and you have two assessments that decide the budget. Get both in early and the build becomes a known quantity.
Duplex builder in North Turramurra — key facts
- Suburb
- North Turramurra, NSW 2074
- Council / LGA
- Ku-ring-gai Council (Ku-ring-gai)
- Primary zoning
- R2 Low Density
- Typical lot size
- 1,000–2,000m²
- Soil class
- Class M
- Median house price
- $2.8M–$4.2M
- Home era
- 1960s–1980s
- 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.
Quality Promise
Every Buildana duplex in North Turramurra is built under a fixed-price contract — feasibility through to dual handover and subdivision.
How It Works
From First Call to Final Key
A duplex is really a feasibility problem wearing a construction outfit. Before anything else, we verify your North Turramurra block against Ku-ring-gai Council's LEP — lot size, frontage, FSR, landscape area. If it doesn't stack up, you find out in a week, not after 3 months of design.
⏱Design runs dual from day one. Two dwellings, one coherent streetscape, party-wall acoustics and fire rating built into the structure rather than bolted on. The plan accommodates R2 Low Density zoning without looking like two mismatched houses sharing a fence.
⏱Approval and construction get sequenced together. Slab pours are choreographed so the trades show up once, frame up both sides, and keep rolling. Two separate meters, two separate services, but one crew, one programme.
⏱Handover is dual. Both dwellings walked at the same time, both OCs in the same issue, both titles subdivided before settlement. You leave the final inspection with the option to live in one and rent the other, or to sell both.
⏱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.
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Liverpool, NSW
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Last updated: 1 July 2025
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