Duplex Builder Warrawee — CDC-Ready Designs, 15-Day Approval
Warrawee 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 Warrawee 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.
Building Duplexes in Warrawee
A duplex in Warrawee is possible on the larger blocks but rarely the sharpest move. This is the smallest premium pocket in Ku-ring-gai, between Turramurra and Wahroonga on the North Shore line, with blocks running 900 to 1,500m2 against the 1,200m2 dual-occupancy minimum, so only the bigger lots clear it. At a $3.2M to $4.6M market lifted by the Knox and Abbotsleigh catchment, a single quality home usually returns more than two dwellings.
Where a rare 1,200m2 block sits outside a conservation area, a considered dual-occupancy can suit a family hold. Heritage Conservation Areas cover several streets, so most rebuilds here go through a full DA rather than CDC, which I factor in early. The ground grades moderately reactive, so footings and the slab are engineered to suit.
What I would check first on your Warrawee block: the area against 1,200m2 and the heritage status, because both usually point to a single home.
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 Warrawee — 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 Warrawee from $750K
- Ku-ring-gai Council DA and CDC approvals managed
- R2 zoning — eligible under July 2024 reform
- Minimum lot size 1,200m² in Warrawee
- Class M soil — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near Warrawee station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Only the largest blocks clear 1,200m2
Warrawee blocks run 900 to 1,500m2 against the Ku-ring-gai 1,200m2 minimum, so only the bigger lots qualify.
The Knox and Abbotsleigh catchment lifts the floor price, and at $3.2M to $4.6M a single home usually wins.
Heritage means a full DA
Heritage Conservation Areas cover several streets, so most rebuilds go through a full DA rather than CDC.
The ground grades moderately reactive, so footings and the slab are engineered to suit on any dwelling.
Duplex builder in Warrawee — key facts
- Suburb
- Warrawee, NSW 2074
- Council / LGA
- Ku-ring-gai Council (Ku-ring-gai)
- Primary zoning
- R2 Low Density
- Typical lot size
- 900–1,500m²
- Soil class
- Class M
- Median house price
- $3.2M–$4.6M
- 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
Free feasibility check on your Warrawee block. We measure frontage width, confirm zoning (R2 Low Density), check minimum lot size against 1,200m² requirement, and review Ku-ring-gai Council's DCP controls.
⏱Two dwellings, one site — design is mostly about geometry. Frontage split, party wall position, garage stacking, private courtyard size, and the streetscape elevation a certifier will actually approve.
⏱DA through Ku-ring-gai Council (40–90 days) or CDC (10–15 business days). Warrawee is zoned R2 Low Density.
⏱Dual construction runs 9–14 months. Engineered slabs sized for Class M soil, simultaneous frame-up, staggered fit-out for efficiency.
⏱Two homes, two titles, two OCs, two warranty packs. We hand over a clean documentation set per dwelling: certifier reports, BASIX certs, structural sign-offs, appliance warranties, maintenance schedules.
⏱Quality Promise
Our Warrawee duplex projects run from feasibility to subdivision under one builder. Fixed price, dual handover, full compliance.
Cost Guide
| Item | Estimated Range |
|---|---|
| Vacant R2/R3 block in Warrawee — duplex build | $980,000 – $1,950,000 |
| KDR duplex (demo 1920s–1960s (heavy heritage stock) home + dual build) | $1,070,000 – $2,080,000 |
| Subdivision-ready block (existing survey & titles) | $980,000 – $1,820,000 |
| Corner block dual-frontage duplex | $1,170,000 – $2,080,000 |
| Investor scenario (neutral-gear focus, rental-ready) | $1,110,000 – $1,630,000 |
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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Liverpool, NSW
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Last updated: 1 July 2025
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