Dual Occupancy Specialists Bexley — Licensed Duplex Builder
NSW licensed duplex builder in Bexley 2207. Torrens or strata subdivision, Bayside Council planning expertise, full contract management for investor-grade builds.
HIA Member
MBA NSW0476 300 300Quick Answer
A duplex in Bexley costs $750,000–$1,500,000+ for dual occupancy construction. Attached duplex from $750K, detached from $1M. Buildana manages feasibility, Bayside Council approvals, construction and subdivision under one fixed-price contract.
Building Duplexes in Bexley
A duplex in Bexley works on the lots that clear the Bayside 600m2 minimum and sit off the heritage streets. This inland suburb runs Federation and inter-war stock plus post-war brick on 450 to 700m2 blocks, and at a $1.6M to $2.4M market a dual-occupancy on a qualifying lot is a strong play. Heritage sits in pockets and R3 runs along Forest Road, so both are checked first.
The ground is Wianamatta Shale, so footings get stable bearing and a slab off geotech is routine on both dwellings. Where a lot fronts Forest Road and carries R3 a medium-density option may beat a duplex, and on a qualifying R2 lot a side-by-side works cleanly. Where older homes carry fibro a licensed asbestos strip-out comes first.
What I would check first on your Bexley block: whether it clears the 600m2 minimum, the heritage status, and any R3 on Forest Road. Those set the best use.
We build these fixed-price, licence HBL 487805C. Send me the address and I will tell you the best use of the block.
Buildana manages the full duplex development process in Bexley — 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 Bexley from $750K
- Bayside Council DA and CDC approvals managed
- R2 and R3 zones — established dual occ. provisions
- Minimum lot size 600m² (Bayside DCP — R2 dual occupancy) in Bexley
- M — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near Bexley North (T4, 1 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 inland suburb runs Federation, inter-war and post-war stock on 450 to 700m2 blocks, so the larger lots clear the Bayside 600m2 minimum.
At a $1.6M to $2.4M market a dual-occupancy on a qualifying non-heritage lot is a strong play.
Heritage and Forest Road
The Wianamatta Shale gives footings stable bearing, so a slab off geotech is routine on both dwellings.
Heritage sits in pockets and R3 runs along Forest Road, where medium density may beat a duplex, with older fibro stripped under licence.
Duplex builder in Bexley — key facts
- Suburb
- Bexley, NSW 2207
- Council / LGA
- Bayside Council (Bayside)
- Primary zoning
- R2 Low
- Typical lot size
- 450–700m²
- Soil class
- M
- Median house price
- $1.6M–$2.4M
- Home era
- 1910s–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.
Cost Guide
| Item | Estimated Range |
|---|---|
| Attached duplex (2 × 180–220m²) | $730,000 – $970,000 |
| Attached duplex (2 × 220–260m²) | $970,000 – $1,260,000 |
| Detached duplex (2 × 220–280m²) | $1,160,000 – $1,500,000 |
| Strata/Torrens subdivision | $15,000 – $29,000 |
| Demolition (if KDR duplex) | $17,000 – $39,000 |
| Council contributions | $10,000 – $58,000+ |
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. Free feasibility check on your Bexley block. We measure frontage width, confirm zoning (R2 Low), check minimum lot size against 600m² (Bayside DCP — R2 dual occupancy) requirement, and review Bayside Council's DCP controls. Written feasibility report within 5 business days. 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. We work the design until both sides feel like proper homes, not mirror-image apartments.
⏱The Bexley construction phase. Fixed price, programmed, supervised. DA through Bayside Council (40–90 days) or CDC (10–15 business days). Bexley is zoned R2 Low. Construction Certificate obtained before works commence. Dual construction runs 9–14 months. Engineered slabs sized for Class M soil, simultaneous frame-up, staggered fit-out for efficiency. Your project manager coordinates all trades and inspections.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. 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. Whatever the next owner or buyer asks for is in the file.
⏱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
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
We Build Across Sydney
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
Explore Related Topics
Develop a Duplex in Bexley
Free duplex feasibility assessment for Bexley 2207. We'll check your block, estimate yield, and provide a fixed-price budget.
Start Your ProjectMore in Bexley
Other Buildana services in Bexley
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Bexley 2207. Bayside Council regulations and local controls are covered on each page.