Duplex Builder South Turramurra — CDC-Ready Designs, 15-Day Approval
South Turramurra 2074 duplex specialists. Compliant design means CDC approval in ~15 business days, construction complete in 10–14 months. Feasibility within 48 hours.
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MBA NSW0476 300 300Quick Answer
A duplex in South 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.
South Turramurra Duplex Construction
A duplex in South Turramurra is possible on the larger blocks, but the land makes you work for it. Lots here run 800 to 1,500m2, so the bigger ones clear the Ku-ring-gai 1,200m2 dual-occupancy minimum while the smaller fall short. The suburb sits in the Lane Cove River valley on steeper, more reactive ground, so engineered slab and retaining design add cost compared to the ridge-top suburbs, and at a $2.8M to $4.2M market a single home often still wins.
Where a 1,200m2-plus block has workable slope, a considered dual-occupancy can suit a family hold. The ground carries Class H to E clay pockets where the valley deepens, so footings, slab and retaining are engineered to suit on both dwellings. Cul-de-sac, family-oriented streets, no station of its own.
What I would check first on your South Turramurra block: the area against 1,200m2, then the slope and soil, because those drive the retaining and the cost.
We build these fixed-price, licence HBL 487805C. Send me the block and I will tell you honestly whether a duplex or a single home makes more of it.
Buildana manages the full duplex development process in South 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 South 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 South Turramurra
- Class M–H soil — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near Turramurra (2 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Larger blocks clear 1,200m2
South Turramurra lots run 800 to 1,500m2, so the bigger ones clear the Ku-ring-gai 1,200m2 minimum while the smaller fall short.
The valley setting means steeper, more reactive ground than the ridge-top suburbs nearby.
Slope and soil drive the cost
Class H to E clay pockets where the valley deepens mean footings, slab and retaining engineered to suit on both dwellings.
At a $2.8M to $4.2M market, that added cost often tips the case back toward a single home.
Duplex builder in South Turramurra — key facts
- Suburb
- South Turramurra, NSW 2074
- Council / LGA
- Ku-ring-gai Council (Ku-ring-gai)
- Primary zoning
- R2 Low Density
- Typical lot size
- 800–1,500m²
- Soil class
- Class M–H
- 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.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. Feasibility covers the planning side and the financial side. Yes-or-no on whether the block supports dual occupancy under Ku-ring-gai Council controls, plus indicative end values, build cost, and likely yield. The point is to kill bad sites before you spend on design — not after. Dual occupancy floor plans designed for your South Turramurra block — attached or detached configuration, vehicle access, private open space, and full Ku-ring-gai Council compliance.
⏱The South Turramurra construction phase. Fixed price, programmed, supervised. Full approval management: Statement of Environmental Effects, plans, reports, and all supporting documentation lodged with Ku-ring-gai Council or private certifier. We handle RFIs and conditions. CC follows. Construction follows a tight programme: dual slabs in one mobilisation, paired frame stand, simultaneous lock-up, then trades rotate between sides for fit-out so no day is lost waiting on availability. The schedule is engineered, not optimistic.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Both dwellings handed over with individual Occupation Certificates. Subdivision lodged for separate titles. Separate metering installed. 6-year structural warranty per dwelling.
⏱Quality Promise
Buildana delivers South Turramurra duplexes as a single project — one contractor accountable from site check to subdivision.
Cost Guide
| Item | Estimated Range |
|---|---|
| Attached duplex (2 × 180–220m²) | $900,000 – $1,200,000 |
| Attached duplex (2 × 220–260m²) | $1,200,000 – $1,560,000 |
| Detached duplex (2 × 220–280m²) | $1,440,000 – $1,860,000 |
| Strata/Torrens subdivision | $18,000 – $36,000 |
| Demolition (if KDR duplex) | $22,000 – $48,000 |
| Council contributions | $12,000 – $72,000+ |
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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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
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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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