Regents Park Duplex Builder — Western Sydney Dual Occupancy
Buildana is a local Cumberland City duplex builder. We know which Regents Park streets support Torrens title subdivision, which suit strata, and what Cumberland City Council will approve. Free site feasibility.
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A duplex in Regents Park 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.
Building Duplexes in Regents Park
A duplex in Regents Park has two pathways, because the suburb carries both R2 and R3 zoning. On R2 the larger of the 450 to 650m2 lots clear the Cumberland 600m2 minimum, and where a block sits in R3 a medium-density option is worth checking alongside the duplex. On a $1.0M to $1.3M market with the station in the suburb, a Torrens-title duplex on a qualifying block is a sound play.
The ground is moderately reactive clay, so footings and the slab are engineered to suit across both dwellings. The 1950s to 1970s stock nearly always carries asbestos, so a licensed strip-out is the first job on site. A side-by-side works once the frontage checks out.
What I would check first on your Regents Park block: the zoning, R2 or R3, then the area against 600m2 and the frontage. The zoning can change the best use entirely.
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 Regents Park — 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 Regents Park from $750K
- Cumberland City Council DA and CDC approvals managed
- R2 and R3 zones — established dual occ. provisions
- Minimum lot size 600m² in Regents Park
- Class M soil — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near Regents Park station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
R2 or R3 decides it
Regents Park carries both R2 and R3, so the first check is which one your block sits in.
On R2 the larger 450 to 650m2 lots clear the Cumberland 600m2 minimum; on R3 a medium-density option may beat a duplex.
Reactive clay and post-war stock
The moderately reactive clay means footings and slab engineered to suit on both dwellings.
A 1950s to 1970s home almost always needs a licensed asbestos strip-out before the new work.
Duplex builder in Regents Park — key facts
- Suburb
- Regents Park, NSW 2143
- 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 |
|---|---|
| Attached duplex (2 × 180–220m²) | $770,000 – $1,030,000 |
| Attached duplex (2 × 220–260m²) | $1,030,000 – $1,340,000 |
| Detached duplex (2 × 220–280m²) | $1,240,000 – $1,600,000 |
| Strata/Torrens subdivision | $15,000 – $31,000 |
| Demolition (if KDR duplex) | $19,000 – $41,000 |
| Council contributions | $10,000 – $62,000+ |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. We assess your Regents Park block — lot size (typical 450–650m²), width, R2 Low Density & R3 Medium Density zoning, setbacks, FSR, landscaped area requirements under Cumberland 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 Regents Park site. You approve final plans before we move to lodgement.
⏱The Regents Park 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 M 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 Cumberland City Council clearance — important if you're planning to sell one side immediately to fund the next move.
⏱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
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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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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Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Regents Park 2143. Cumberland City Council regulations and local controls are covered on each page.