Dual Occupancy Specialists Hillsdale — Licensed Duplex Builder
NSW licensed duplex builder in Hillsdale 2036. Torrens or strata subdivision, Randwick City Council planning expertise, full contract management for investor-grade builds.
HIA Member
MBA NSW0476 300 300Quick Answer
A duplex in Hillsdale costs $750,000–$1,500,000+ for dual occupancy construction. Attached duplex from $750K, detached from $1M. Buildana manages feasibility, Randwick City Council approvals, construction and subdivision under one fixed-price contract.
Building Duplexes in Hillsdale
A duplex in Hillsdale is a dual-occupancy question answered by a feasibility check, since Randwick's attached-dwelling controls turn on frontage and lot area rather than a single simple minimum. The post-war fibro and brick on 500 to 650m² blocks in this inland pocket can suit two dwellings where the frontage and area work, and at a $1.6M to $2.5M median it is one of the more affordable dual-occupancy entries in the Randwick LGA.
The ground is sandstone-dominant, so excavation is a test-dig matter and the duplex slab and footings off geotech stay predictable. Where older homes carry fibro, a licensed asbestos strip-out comes first, and Eastgardens a kilometre away anchors the amenity. We confirm the dual-occupancy controls against your block before design.
What I would check first on your Hillsdale block: whether the frontage and area suit a dual-occupancy, the sandstone under the footprint, and any asbestos before demolition. Those decide the play.
We build these fixed-price, licence HBL 487805C. Get our dual-occupancy feasibility before you commit.
Buildana manages the full duplex development process in Hillsdale — 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 Hillsdale from $750K
- Randwick City Council DA and CDC approvals managed
- R2 and R3 zones — established dual occ. provisions
- Minimum lot size 600m² in Hillsdale
- M — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near Light Rail Kingsford (4 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
A feasibility question
Randwick's attached-dwelling controls turn on frontage and lot area rather than a single simple minimum, so a dual-occupancy in Hillsdale starts with a feasibility check.
The post-war fibro and brick on 500 to 650m² blocks can suit two dwellings where the frontage and area work, at a $1.6M to $2.5M median, an affordable Randwick-LGA entry.
Rock and asbestos
The sandstone-dominant ground means excavation is a test-dig matter, and the duplex slab and footings off geotech stay predictable.
Older fibro gets a licensed asbestos strip-out first, and Eastgardens a kilometre away anchors the amenity.
Duplex builder in Hillsdale — key facts
- Suburb
- Hillsdale, NSW 2036
- Council / LGA
- Randwick City Council (Randwick)
- Primary zoning
- R2 Low
- Typical lot size
- 500–650m²
- Soil class
- M
- Median house price
- $1.6M–$2.5M
- 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.
How It Works
From First Call to Final Key
Feasibility covers the planning side and the financial side. Yes-or-no on whether the block supports dual occupancy under Randwick City Council controls, plus indicative end values, build cost, and likely yield.
⏱Dual occupancy floor plans designed for your Hillsdale block — attached or detached configuration, vehicle access, private open space, and full Randwick City Council compliance..
⏱Full approval management: Statement of Environmental Effects, plans, reports, and all supporting documentation lodged with Randwick City Council or private certifier. We handle RFIs and conditions.
⏱Construction follows a tight programme: dual slabs in one mobilisation, paired frame stand, simultaneous lock-up, then trades rotate between sides for fit-out so no day is lost waiting on availability. The schedule is engineered, not optimistic.
⏱Both dwellings handed over with individual Occupation Certificates. Subdivision lodged for separate titles.
⏱Quality Promise
We build duplexes in Hillsdale end-to-end — feasibility, design, DA/CDC, dual-slab construction, subdivision. One contract.
Cost Guide
| Item | Estimated Range |
|---|---|
| Vacant R2/R3 block in Hillsdale — duplex build | $690,000 – $1,380,000 |
| KDR duplex (demo 1950s–1970s home + dual build) | $750,000 – $1,470,000 |
| Subdivision-ready block (existing survey & titles) | $690,000 – $1,290,000 |
| Corner block dual-frontage duplex | $830,000 – $1,470,000 |
| Investor scenario (neutral-gear focus, rental-ready) | $780,000 – $1,150,000 |
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
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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.
Develop a Duplex in Hillsdale
Free duplex feasibility assessment for Hillsdale 2036. We'll check your block, estimate yield, and provide a fixed-price budget.
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Other Buildana services in Hillsdale
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Hillsdale 2036. Randwick City Council regulations and local controls are covered on each page.