Five Dock Home Extension Builder — Live In, Build On
Buildana extends homes across Five Dock 2046 while you stay in place. 1900s–1960s-era structure, City of Canada Bay Council rules, weatherproofing during build — all managed locally from Fairfield.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Five Dock costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, City of Canada Bay Council approvals, and construction under one fixed-price contract.
Second-Storey & Rear Additions in Five Dock
A home extension in Five Dock is a hold-and-improve move ahead of the Metro. Sydney Metro West is under construction with a Five Dock station opening in 2030, and the Federation and inter-war cottages, Italian-Australian post-war homes and contemporary infill on 450 to 800m² blocks sit at a $2.0M to $3.8M median the connection is set to lift. Extending the house you own beats selling into that upside.
The era spread decides the method. Early double brick around the village carries a first-floor addition on its walls, while post-war stock is better grown out at ground level. Heritage Conservation Areas cover several streets, and R3 zoning along Great North Road and Lyons Road opens medium-density options on the right block. Wianamatta Shale underfoot behaves, so footings stay straightforward.
What I would check first on your Five Dock house: the era of the walls, any heritage pocket, and whether an R3 corridor block changes the options. Those set the plan.
We build these fixed-price, licence HBL 487805C. Get us to read your block before the Metro finishes pricing it.
Buildana manages the complete home extension process in Five Dock — from design consultation and structural engineering through to DA or CDC approval, and fixed-price construction to handover. Extend your home without the stress.
Read our Home Extension Cost Guide 2026 or explore extension approval pathways in NSW.
- Home extensions in Five Dock from $150K
- City of Canada Bay Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M–H — structural engineering included
- 1900s–1960s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Five Dock Metro (Sydney Metro West, opening 2030) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Ahead of Metro West
Sydney Metro West is under construction with a Five Dock station opening in 2030, and the cottages, post-war homes and infill on 450 to 800m² blocks sit at a $2.0M to $3.8M median the connection is set to lift.
Extending the house you own builds space into land the Metro keeps re-rating rather than selling into the upside.
Era, heritage and zoning
Early double brick around the village carries a first-floor addition on its walls, while post-war stock does better added at ground level.
Heritage Conservation Areas run across several streets, and R3 zoning down Great North Road and Lyons Road opens medium-density options on the right block. The shale soil keeps footings routine.
Home extension builder in Five Dock — key facts
- Suburb
- Five Dock, NSW 2046
- Council / LGA
- City of Canada Bay Council (City of Canada Bay)
- Primary zoning
- R2 Low
- Typical lot size
- 450–800m²
- Soil class
- M–H
- Median house price
- $2.0M–$3.8M
- Home era
- 1900s–1960s
- Typical price range
- $150,000 – $600,000+
- Typical timeline
- 6–12 months design to handover
- Approval pathway
- CDC for most rear extensions, DA for second-storey
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
The first job on an extension is finding out what you're extending onto. Five Dock homes from the 1900s–1960s were built to different standards — we open walls, check footings, verify load paths. The existing house has to carry the new work.
⏱Design follows the existing roof. A bad extension looks like a bolt-on; a good one reads as original. Matched brickwork or contrasting render (whichever the architecture calls for), tied-in roofline, continuous flooring where it should be continuous.
⏱Construction happens while you live in the house. That means weatherproofing every night, staging the works so kitchens and bathrooms don't disappear on the same week, and keeping the site clean of debris that doesn't belong in a family home.
⏱Finish is seamless. Paint match, floor match, roofline match, brick match where possible. The only way to tell the extension is new is the date on the plans.
⏱Quality Promise
Every Buildana home extension in Five Dock is delivered under a fixed-price contract — from design consultation through to defect-free handover.
Cost Guide
| Item | Estimated Range |
|---|---|
| Simple rear extension (single wall removal, no roof change) | $90,000 – $200,000 |
| Moderate extension (multiple openings, roof extended) | $200,000 – $380,000 |
| Complex extension (structural steel portals, re-roofing) | $380,000 – $600,000 |
| Second-storey tie-in (existing house re-engineered) | $350,000 – $650,000 |
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
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
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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 April 2026
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