How much does a home extension cost in Bankstown?

A home extension in Bankstown (2200) typically costs $250,000–$700,000+ depending on type and size. Ground floor rear extension (30–50m²): $250K–$400K. Second storey addition: $350K–$600K. Bankstown has Class M soil — foundation assessment is included. Most 1940s–1980s homes on 500–750m² blocks have structural capacity for extension. All Buildana extensions are fixed-price.

Do I need Canterbury-Bankstown Council approval for a home extension?

Yes. Bankstown is zoned R2 Low Density & R3 Medium Density. Most extensions require CDC (10–15 business days) or DA through Canterbury-Bankstown Council (40–90+ days). Canterbury-Bankstown Council has specific FSR and building height controls that affect extension size. Buildana manages the entire approval process.

Can I stay in my home during an extension in Bankstown?

In many cases, yes — particularly for rear ground floor extensions and second storey additions where the existing ground floor remains liveable. 1940s–1980s homes in Bankstown typically have adequate roof access for first-floor work. Buildana stages to minimise disruption. For major renovation-extensions, temporary relocation (4–8 weeks) may be needed.

Is it cheaper to extend or knock down and rebuild in Bankstown?

It depends on your 1940s–1980s home's condition. If you need 30–60m² extra, extending is usually more cost-effective. If renovation and extension costs exceed 50–60% of a new build, KDR delivers better value. With Bankstown median prices around $1.0M–$1.35M, both options add significant value. Buildana assesses both honestly during the free consultation.

How long does a home extension take in Bankstown?

Total 6–14 months: design and Canterbury-Bankstown Council approvals (2–4 months), construction (4–10 months). Ground floor rear extension: 4–6 months build. Second storey: 6–10 months. Bankstown's Class M soil may require underpinning for second-storey work. Buildana provides a detailed timeline in every contract.

Will a home extension add value to my Bankstown property?

Yes. With Bankstown median prices around $1.0M–$1.35M, a well-executed extension typically returns 1.5–2x the investment. Second storey additions and kitchen-living extensions are especially valuable near Bankstown Central & upcoming Bankstown Metro station. Quality design that integrates with your 1940s–1980s home is key.

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Home Extension Bankstown — More Space, Same Address

Fixed-price home extensions in Bankstown 2200. Ground floor, first floor, and renovation-extension combinations. Canterbury-Bankstown Council approved. Free consultation.

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Quick Answer

A home extension in Bankstown costs $250,000–$700,000+ depending on type and size. Ground floor rear extension from $250K, second storey addition from $350K. Buildana manages design, Canterbury-Bankstown Council approvals and fixed-price construction.

Home Extension Builder in Bankstown

Bankstown has a large stock of 1960s–1980s brick homes that are structurally sound but undersized for modern family living. A home extension is often the smartest investment — adding bedrooms, living space, or a second storey while preserving the existing structure and established landscaping. Canterbury-Bankstown Council has specific controls for extensions including FSR limits, building height, and setbacks — Buildana navigates all of these to deliver compliant, high-quality extensions in Bankstown.

Buildana manages every stage of your Bankstown extension — from design and council approval through to structural works and internal fit-out. One builder, one fixed-price contract.

Not sure whether to extend or rebuild? Read our Complete Home Extension Guide or compare extension vs knockdown rebuild.

Home extensions in Bankstown from $250K
Ground floor and first floor additions for 1940s–1980s homes
Canterbury-Bankstown Council DA and CDC approvals managed
Bankstown zoned R2 Low Density & R3 Medium Density
Class M soil — structural assessment included
NCC 2022 and BASIX compliant
6-year structural warranty
Free consultation — near Bankstown station

From First Call to Final Key

We inspect your Bankstown home — structural condition of your 1940s–1980s build, ceiling height, roof type, Class M foundation, and Canterbury-Bankstown Council requirements. Honest advice on extend vs rebuild.

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Extension designed for your 500–750m² block — matching existing aesthetics, maximising natural light, and meeting Canterbury-Bankstown Council's setback, FSR, and height controls under R2 Low Density & R3 Medium Density zoning.

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CDC fast-track (10–15 business days) or DA through Canterbury-Bankstown Council (40–90 days). Bankstown zoned R2 Low Density & R3 Medium Density. All documentation prepared and lodged by Buildana.

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Structural works on Class M foundation, weatherproofing, fit-out and finishing. Staged to minimise disruption. Weekly updates from your project manager.

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Final inspection, Occupation Certificate, 6-year structural warranty. Seamless integration with your 1940s–1980s home near Bankstown Central & upcoming Bankstown Metro station.

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Quality Promise

Every Buildana extension in Bankstown is designed to integrate seamlessly with your existing home and built under a fixed-price contract.

Fixed-price extension constructionStructural engineering includedNCC 2022 and BASIX compliantFull Canterbury-Bankstown Council complianceStaged to minimise disruption6-year structural warranty

Our Team

Oliver Alameri

Founder / Director / Builder

Ahmad Alameri

Accounts Manager

Claire Wendell

Project Manager

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Cost Guide

Item	Estimated Range
Ground floor rear extension	$250,000 – $400,000
Second storey addition	$350,000 – $600,000
Renovation + extension	$400,000 – $700,000+
Structural engineering	$5,000 – $15,000
Roof works	$15,000 – $40,000
Kitchen/bathroom fit-out	$25,000 – $60,000

Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.

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Areas We Serve

We Build Across Sydney

Buildana builds across greater Sydney — with deep roots in Western Sydney's Fairfield, Liverpool, Cumberland, Canterbury-Bankstown, and Blacktown LGAs.

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Last updated: 1 July 2025

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Canterbury-Bankstown LGA Extensions Second Storey Additions Knockdown Rebuild Renovations