Dual Occupancy Specialists Old Toongabbie — Licensed Duplex Builder
NSW licensed duplex builder in Old Toongabbie 2146. Torrens or strata subdivision, City of Parramatta Council planning expertise, full contract management for investor-grade builds.
HIA Member
MBA NSW0476 300 300Building Duplexes in Old Toongabbie
A duplex in Old Toongabbie is a strong dual-occupancy play on the larger blocks that clear the Parramatta 600m2 minimum. This established suburb between Toongabbie and Winston Hills runs 1960s to 1980s brick on 500 to 750m2 R2 lots, so the larger lots clear 600, and at a $1.3M to $1.8M market a Torrens-title duplex on a qualifying lot is a sound play in a well-established duplex market. Some smaller lots fall short, so the area is the first check.
The ground is Wianamatta Shale, so footings get stable bearing and a slab off geotech is routine on both dwellings. On a qualifying R2 lot a side-by-side 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 Old Toongabbie block: whether it clears the 600m2 minimum, the frontage for a side-by-side, and any asbestos in the older home. 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 Old Toongabbie — 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 Old Toongabbie from $750K
- City of Parramatta Council DA and CDC approvals managed
- R2 and R3 zones — established dual occ. provisions
- Minimum lot size 600m² (R2) under Parramatta DCP 2023 in Old Toongabbie
- M — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near Toongabbie (T1, 2 km) / bus to Parramatta station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Larger blocks, strong market
This established suburb runs 1960s to 1980s brick on 500 to 750m2 R2 lots, so the larger lots clear the Parramatta 600m2 minimum.
At a $1.3M to $1.8M market a Torrens-title duplex on a qualifying lot is a sound play in a well-established duplex market.
Stable ground
The Wianamatta Shale gives footings stable bearing, so a slab off geotech is routine on both dwellings.
No broad heritage overlays keep the path predictable, with older fibro stripped under licence first.
Duplex builder in Old Toongabbie — key facts
- Suburb
- Old Toongabbie, NSW 2146
- Council / LGA
- City of Parramatta Council (City of Parramatta)
- Primary zoning
- R2 Low
- Typical lot size
- 500–750m²
- Soil class
- M
- Median house price
- $1.3M–$1.8M
- 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.
Quality Promise
Buildana delivers Old Toongabbie duplexes as a single project — one contractor accountable from site check to subdivision.
How It Works
From First Call to Final Key
We assess your Old Toongabbie block — lot size (typical 500–750m²), width, R2 Low zoning, setbacks, FSR, landscaped area requirements under City of Parramatta Council's LEP and DCP. Minimum lot for duplex: 600m² (R2) under Parramatta DCP 2023.
⏱Design phase covers unit layout, access, parking, private open space, and waste management for dual occupancy on your Old Toongabbie site. You approve final plans before we move to lodgement.
⏱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.
⏱Fixed-price construction of both dwellings from slab to keys. Class M engineered footings, frame, lock-up, internal fit-out, and external works.
⏱Subdivision registration starts in parallel with final fitout so titles issue close to handover, not 6 months after. Buildana coordinates the surveyor and City of Parramatta 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
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
Old Toongabbie Dual Occupancy — Free Feasibility
Free duplex feasibility assessment for Old Toongabbie 2146. We'll check your block, estimate yield, and provide a fixed-price budget.
Start Your ProjectMore in Old Toongabbie
Other Buildana services in Old Toongabbie
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Old Toongabbie 2146. City of Parramatta Council regulations and local controls are covered on each page.