Dual Occupancy Specialists Hammondville — Licensed Duplex Builder
NSW licensed duplex builder in Hammondville 2170. Torrens or strata subdivision, Liverpool City Council planning expertise, full contract management for investor-grade builds.
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MBA NSW0476 300 300Quick Answer
A duplex in Hammondville 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.
Duplex Builder in Hammondville
A duplex in Hammondville is a feasible dual-occupancy on the lots that clear the Liverpool 600m2 minimum, near Holsworthy station. This small quiet suburb runs post-war and 1970s homes on standard blocks, and at a $900K to $1.1M median a Torrens-title duplex on a qualifying lot is a sound play with rail convenience. Some standard lots fall short, so the area is the first check.
This is Liverpool 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. Where the existing home carries fibro a licensed asbestos strip-out comes first.
What I would check first on your Hammondville 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 Hammondville — 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 Hammondville from $750K
- Liverpool City Council DA and CDC approvals managed
- R2 zoning — eligible under July 2024 reform
- Minimum lot size 600m² in Hammondville
- Class H soil — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near Holsworthy station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Dual-occ near the station
This small quiet suburb runs post-war and 1970s homes on standard blocks near Holsworthy station.
At a $900K to $1.1M median a Torrens-title duplex on a lot clearing the Liverpool 600m2 minimum is a sound play.
Engineered for the clay
This is Liverpool 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, with older fibro stripped under licence first.
Duplex builder in Hammondville — key facts
- Suburb
- Hammondville, 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
- $900K–$1.1M
- 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
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 Hammondville block's yield — floor plans, elevations, 3D renders, and landscape concept. We optimise for rental return and sale value under Liverpool City Council's DCP.
⏱Most Hammondville duplexes go DA route through Liverpool 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 H soil), frame, lock-up, fit-out. Milestone updates from your project manager.
⏱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
Every Buildana duplex in Hammondville is built under a fixed-price contract — feasibility through to dual handover and subdivision.
Cost Guide
| Item | Estimated Range |
|---|---|
| Attached duplex (side-by-side) | $730,000 – $1,070,000 |
| Attached duplex (stepped/offset) | $870,000 – $1,210,000 |
| Detached duplex (two fully separate dwellings) | $1,160,000 – $1,550,000 |
| Luxury detached duplex | $1,550,000+ |
| Party-wall acoustic & fire upgrade | Included |
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
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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Free duplex feasibility assessment for Hammondville 2170. We'll check your block, estimate yield, and provide a fixed-price budget.
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Other Buildana services in Hammondville
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Hammondville 2170. Liverpool City Council regulations and local controls are covered on each page.