Dual Occupancy Specialists Oakhurst — Licensed Duplex Builder
NSW licensed duplex builder in Oakhurst 2761. Torrens or strata subdivision, Blacktown City Council planning expertise, full contract management for investor-grade builds.
HIA Member
MBA NSW0476 300 300Quick Answer
A duplex in Oakhurst costs $750,000–$1,500,000+ for dual occupancy construction. Attached duplex from $750K, detached from $1M. Buildana manages feasibility, Blacktown City Council approvals, construction and subdivision under one fixed-price contract.
Duplex Builder in Oakhurst
A duplex in Oakhurst is a feasible dual-occupancy on the lots that clear the Blacktown 600m2 minimum, though the 1980s to 1990s stock sits on some tighter blocks. This established residential suburb runs 1980s to 1990s homes on standard blocks with good local amenities, and at a $750K to $950K median a Torrens-title duplex on a qualifying lot is an affordable play. Some 1980s to 1990s lots fall short, so the area is the first check.
This is Blacktown LGA on reactive clay, so footings are engineered off geotech and the slab is detailed for the movement on both dwellings. On a qualifying block a side-by-side duplex works cleanly, and there are no broad heritage overlays. Being 1980s to 1990s stock, I confirm any asbestos before demolition.
What I would check first on your Oakhurst block: whether it clears the 600m2 minimum, the reactive-clay footing design, and the frontage. Those set the dual-occ.
We build these fixed-price, licence HBL 487805C. Send me the block and I will tell you what dual-occupancy it carries.
Buildana manages the full duplex development process in Oakhurst — 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 Oakhurst from $750K
- Blacktown City Council DA and CDC approvals managed
- R2 zoning — eligible under July 2024 reform
- Minimum lot size 600m² in Oakhurst
- 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 Mount Druitt (2 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Feasibility against 600m2
This established suburb runs 1980s to 1990s homes on standard blocks with good local amenities.
At a $750K to $950K median a Torrens-title duplex on a lot clearing the Blacktown 600m2 minimum is an affordable play, with some tighter lots falling short.
Engineered for the clay
This is Blacktown LGA on reactive clay, so footings are engineered off geotech and the slab detailed for movement on both dwellings.
No broad heritage overlays keep the path predictable, and I confirm any asbestos before demolition.
Duplex builder in Oakhurst — key facts
- Suburb
- Oakhurst, NSW 2761
- Council / LGA
- Blacktown City Council (Blacktown City)
- Primary zoning
- R2 Low Density
- Typical lot size
- 550–700m²
- Soil class
- Class M–H
- Median house price
- $750K–$950K
- Home era
- 1980s–1990s
- 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. Quick desktop check first — lot size, zoning, frontage — then full site visit if it stacks. Drainage path, neighbour overlooking, slope, services, easements. 600m² minimum is just the entry ticket; the real feasibility is whether two compliant dwellings actually fit and sell. Our architect designs both dwellings to maximise your Oakhurst block's yield — floor plans, elevations, 3D renders, and landscape concept. We optimise for rental return and sale value under Blacktown City Council's DCP.
⏱The Oakhurst construction phase. Fixed price, programmed, supervised. Most Oakhurst duplexes go DA route through Blacktown City Council — CDC pathways for dual occupancy are restrictive on most R2 blocks. We pre-meet with council planners on borderline sites to confirm support before lodgement, which avoids a 3-month round trip on RFIs. Both dwellings built simultaneously — engineered slabs (Class M–H soil), frame, lock-up, fit-out. Milestone updates from your project manager.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Final inspections, dual OCs issued, subdivision registered with LRS. Each dwelling gets its own title, services, and 6-year structural warranty. Ready to rent, sell, or occupy.
⏱Quality Promise
Our Oakhurst duplex projects run from feasibility to subdivision under one builder. Fixed price, dual handover, full compliance.
Cost Guide
| Item | Estimated Range |
|---|---|
| Attached duplex (2 × 180–220m²) | $700,000 – $930,000 |
| Attached duplex (2 × 220–260m²) | $930,000 – $1,210,000 |
| Detached duplex (2 × 220–280m²) | $1,120,000 – $1,440,000 |
| Strata/Torrens subdivision | $14,000 – $28,000 |
| Demolition (if KDR duplex) | $17,000 – $37,000 |
| Council contributions | $9,000 – $56,000+ |
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
Estimate Your Build Cost
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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
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Fatima Al-Rashid
Liverpool, NSW
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Last updated: 1 July 2025
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Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Oakhurst 2761. Blacktown City Council regulations and local controls are covered on each page.