Licensed Home Extension Builder Canterbury
NSW licensed extension specialist. Canterbury 2193 extensions on 1920s–1960s-era homes require structural sign-off, Class M footings, and matched connection — we engineer and document properly.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Canterbury costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Canterbury-Bankstown Council approvals, and construction under one fixed-price contract.
Home Extension Builder in Canterbury
A home extension in Canterbury means working with some of the oldest fabric on the whole corridor — 1920s to 1960s homes, a lot of them with genuine character out the front. That character is the value, so the frontage is left alone and the new living builds behind it, out of sight from the street. Where a heritage overlay applies, I check exactly where you stand before anything gets drawn.
Old homes carry more to manage. Pre-war fabric puts lead paint on the list alongside asbestos, and both are handled as licensed processes rather than disturbed and left. The footings can be close to a hundred years old, so where the new wing ties into the original they get assessed, not assumed — a century-old footing and a fresh slab need help to agree.
At a $1.3M to $1.6M median, the combination the market actually pays for is exactly this: the heritage face kept, modern living added behind. That is the job worth doing well here.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with the heritage position checked, before you commit.
Buildana manages the complete home extension process in Canterbury — 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 Canterbury from $150K
- Canterbury-Bankstown Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Class M soil — structural engineering included
- 1920s–1960s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Canterbury station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Modern living behind the old face
Canterbury's 1920s to 1960s homes extend the right way — the frontage stays untouched and the modern kitchen, dining and family space go in behind, with any heritage overlay checked early so the approval runs clean.
It is that pairing of character and contemporary space that the $1.3M-plus market rewards, so it is worth getting right rather than rushing.
Century fabric, proper process
Lead paint sits alongside asbestos on pre-war fabric, and both are dealt with as licensed processes, done properly.
The aged footings are assessed where the new wing meets the old structure, and all of that is priced into the job from the outset.
Home extension builder in Canterbury — key facts
- Suburb
- Canterbury, NSW 2193
- Council / LGA
- Canterbury-Bankstown Council (Canterbury-Bankstown)
- Primary zoning
- R2 Low Density & R3 Medium Density
- Typical lot size
- 500–700m²
- Soil class
- Class M
- Median house price
- $1.3M–$1.6M
- Home era
- 1920s–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.
Cost Guide
| Item | Estimated Range |
|---|---|
| Adding a master suite (1920s–1960s Canterbury home) | $150,000 – $310,000 |
| Kitchen/living open-out to backyard | $170,000 – $390,000 |
| Second storey for teenagers/office | $310,000 – $620,000 |
| Extension + bathroom (growing family) | $220,000 – $450,000 |
| Full rear + roof tie-in (entertainer's zone) | $390,000 – $670,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
We assess your Canterbury home — existing structure, block size (500–700m²), R2 Low Density & R3 Medium Density zoning, setbacks, FSR, and your space requirements. You'll know what's achievable before spending on detailed design.
⏱Design phase covers the extension layout, junction with existing structure, window and door placement, and external finish to match your Canterbury home's streetscape. Multiple design options presented.
⏱Documentation pack covers structural engineering for the new footings sized to match existing depths on Class M soil, BASIX 2025 compliance, shadow diagrams to neighbours' POS, hydraulic, and detailed sections through the wall-tie junction. Approval-grade, not concept-grade.
⏱Fixed-price construction of your extension. New footings engineered for Class M soil, structural connection to existing home, frame, fit-out, and finishes.
⏱Handover documentation covers the new work specifically — OC for the extension, structural certs, BASIX certificate updates, and warranty for the new section plus the junction detailing. Existing house remains under whatever warranty position applied before.
⏱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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Last updated: 1 April 2026
Extend, Don't Move — Canterbury
Free design consultation for Canterbury 2193. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Canterbury
Other Buildana services in Canterbury
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Canterbury 2193. Canterbury-Bankstown Council regulations and local controls are covered on each page.