Dual Occupancy Specialists Wentworthville — Licensed Duplex Builder
NSW licensed duplex builder in Wentworthville 2145. Torrens or strata subdivision, Cumberland City Council planning expertise, full contract management for investor-grade builds.
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MBA NSW0476 300 300Quick Answer
A duplex in Wentworthville costs $750,000–$1,500,000+ for dual occupancy construction. Attached duplex from $750K, detached from $1M. Buildana manages feasibility, Cumberland City Council approvals, construction and subdivision under one fixed-price contract.
Wentworthville Duplex Construction
A duplex in Wentworthville has a clear pull, because the station sits in the suburb and it carries both R2 and R3. On R2 the larger of the 450 to 650m2 lots clear the Cumberland 600m2 minimum, and along the R3 pockets a medium-density option is worth checking. On a $1.0M to $1.3M market with rail in walking distance, a Torrens-title duplex on a qualifying block is a strong play.
The ground is moderately reactive clay, so footings and the slab are engineered to suit across both dwellings. The post-war and 1960s stock nearly always carries asbestos, so a licensed strip-out is the first job. A side-by-side works once the frontage checks out.
What I would check first on your Wentworthville block: the zoning, then the area against 600m2 and the frontage. The R3 pockets near the station can change the best use.
We build these fixed-price, licence HBL 487805C. Send me the block and I will tell you what it carries.
Buildana manages the full duplex development process in Wentworthville — 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 Wentworthville from $750K
- Cumberland City Council DA and CDC approvals managed
- R2 and R3 zones — established dual occ. provisions
- Minimum lot size 600m² in Wentworthville
- Class M soil — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near Wentworthville station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Station and zoning
Wentworthville has its own station and carries R2 and R3, so rail access and zoning are the first two checks.
On R2 the larger 450 to 650m2 lots clear the Cumberland 600m2 minimum; the R3 pockets may support medium density.
Reactive clay and stripping
The moderately reactive clay means footings and slab engineered to suit on both dwellings.
A post-war or 1960s home almost always needs a licensed asbestos strip-out before the new work.
Duplex builder in Wentworthville — key facts
- Suburb
- Wentworthville, NSW 2145
- Council / LGA
- Cumberland City Council (Cumberland City)
- Primary zoning
- R2 Low Density & R3 Medium Density
- Typical lot size
- 450–650m²
- Soil class
- Class M
- Median house price
- $1.0M–$1.3M
- Home era
- 1950s–1970s
- 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 |
|---|---|
| Vacant R2/R3 block in Wentworthville — duplex build | $770,000 – $1,530,000 |
| KDR duplex (demo 1950s–1970s home + dual build) | $840,000 – $1,630,000 |
| Subdivision-ready block (existing survey & titles) | $770,000 – $1,430,000 |
| Corner block dual-frontage duplex | $920,000 – $1,630,000 |
| Investor scenario (neutral-gear focus, rental-ready) | $870,000 – $1,280,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Free feasibility check on your Wentworthville block. We measure frontage width, confirm zoning (R2 Low Density & R3 Medium Density), check minimum lot size against 600m² requirement, and review Cumberland City 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 Cumberland City Council (40–90 days) or CDC (10–15 business days). Wentworthville is zoned R2 Low Density & R3 Medium 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.
⏱Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
Estimate Your Build Cost
Use our free calculator to get an instant cost estimate for your project
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
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Fatima Al-Rashid
Liverpool, NSW
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Last updated: 1 July 2025
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