Duplex Builder Warwick Farm — From $750K Fixed Price
Fixed-price duplex construction in Warwick Farm 2170. Two dwellings, one contract, no variations. Minimum lot 600m². Free feasibility.
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MBA NSW0476 300 300Quick Answer
A duplex in Warwick Farm costs $750,000–$1,500,000+ for dual occupancy construction. Attached duplex from $750K, detached from $1M. Buildana manages feasibility, Liverpool City Council approvals, construction and subdivision under one fixed-price contract.
Building Duplexes in Warwick Farm
A duplex in Warwick Farm is an affordability play with a station attached. Lots run 500 to 650m2 of R2, so the larger ones clear the Liverpool 600m2 minimum and the tighter ones fall short. At a $800K to $1.0M market, with the racecourse precinct under transformation and rail close to Liverpool CBD, a Torrens-title duplex on a qualifying block works well for investors watching the suburb improve.
The ground is highly reactive clay, so footings are engineered off geotech and the slab detailed to suit on both dwellings. The 1960s to 1980s stock usually carries fibro, so a licensed strip-out is the first job on site. A side-by-side sits cleanly once the frontage checks out.
What I would check first on your Warwick Farm block: the area against 600m2, the frontage, and any flood mapping given the Georges River corridor nearby.
We build these fixed-price, licence HBL 487805C. Send me the block and I will tell you the dual-occupancy it carries.
Buildana manages the full duplex development process in Warwick Farm — 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 Warwick Farm from $750K
- Liverpool City Council DA and CDC approvals managed
- R2 zoning — eligible under July 2024 reform
- Minimum lot size 600m² in Warwick Farm
- Class H soil — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near Warwick Farm station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Affordable entry, station close
Warwick Farm lots run 500 to 650m2, so the larger ones clear the Liverpool 600m2 minimum.
At $800K to $1.0M with a station and the racecourse precinct changing, the investor numbers work on a qualifying block.
Clay, fibro and flood check
The highly reactive clay means footings engineered off geotech and the slab detailed to suit on both dwellings.
A 1960s to 1980s home usually needs a licensed fibro strip-out, and any Georges River flood mapping is checked early.
Duplex builder in Warwick Farm — key facts
- Suburb
- Warwick Farm, NSW 2170
- Council / LGA
- Liverpool City Council (Liverpool City)
- Primary zoning
- R2 Low Density
- Typical lot size
- 500–650m²
- Soil class
- Class H
- Median house price
- $800K–$1.0M
- 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.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. We assess your Warwick Farm block — lot size (typical 500–650m²), width, R2 Low Density zoning, setbacks, FSR, landscaped area requirements under Liverpool City Council's LEP and DCP. Minimum lot for duplex: 600m². You'll know viability before spending on design. Design phase covers unit layout, access, parking, private open space, and waste management for dual occupancy on your Warwick Farm site. You approve final plans before we move to lodgement.
⏱The Warwick Farm construction phase. Fixed price, programmed, supervised. Duplex approvals get scrutinised harder than single dwellings — neighbour notification, overshadowing, privacy, traffic, waste. Our SEE addresses each on the front foot rather than reactively. Cleaner submission, fewer conditions, faster CC. Fixed-price construction of both dwellings from slab to keys. Class H engineered footings, frame, lock-up, internal fit-out, and external works. Weekly progress reports.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Subdivision registration starts in parallel with final fitout so titles issue close to handover, not 6 months after. Buildana coordinates the surveyor and Liverpool City Council clearance — important if you're planning to sell one side immediately to fund the next move.
⏱Quality Promise
Warwick Farm dual occupancy construction: feasibility assessment first, then fixed-price build to dual handover. No surprises.
Cost Guide
| Item | Estimated Range |
|---|---|
| Attached duplex (2 × 180–220m²) | $690,000 – $920,000 |
| Attached duplex (2 × 220–260m²) | $920,000 – $1,200,000 |
| Detached duplex (2 × 220–280m²) | $1,100,000 – $1,430,000 |
| Strata/Torrens subdivision | $14,000 – $28,000 |
| Demolition (if KDR duplex) | $17,000 – $37,000 |
| Council contributions | $9,000 – $55,000+ |
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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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
Buildana built our granny flat in just 12 weeks. Fast approvals, great communication, and a beautiful final product. Highly recommend.
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 Warwick Farm 2170. Liverpool City Council regulations and local controls are covered on each page.