Home Extension Builder Campsie — Approved in 60 Days
Campsie 2194 extensions with tight approval timelines. CDC where eligible (~15 days), DA via Canterbury-Bankstown Council in 40–60 days. Construction 12–24 weeks depending on scope.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Campsie 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.
Campsie Home Extensions — Fixed Price
A home extension in Campsie weighs the zoning first — the R3/R4 land around the centre carries development value that can outvote the wing, while the established R2 streets extend confidently.
The 1940s-70s stock takes the rear wing on the era read, with the post-war asbestos handled by licensed strip-out and the generous 500 to 700m² blocks giving the plan room.
At the $1.2M to $1.5M median with the rail keeping demand deep, the staying maths works where the zoning supports it.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with the zoning checked, before you commit.
Buildana manages the complete home extension process in Campsie — 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 Campsie from $150K
- Canterbury-Bankstown Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Class M soil — structural engineering included
- 1940s–1970s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Campsie station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Centre maths, street confidence
Near Campsie's centre, R3/R4 value is checked before any extension dollar. On the established streets, the 1940s-70s stock takes the rear wing confidently on generous blocks — and the rail connectivity holds the result.
The honest read on which you own decides the spend.
Era handled properly
The post-war asbestos gets licensed strip-out where touched, and the footings are engineered.
The licensed strip-out and the footings both sit in the quote from the outset.
Home extension builder in Campsie — key facts
- Suburb
- Campsie, NSW 2194
- 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
- $1.2M–$1.5M
- Home era
- 1940s–1970s
- 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. Campsie homes from the 1940s–1970s 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
Buildana's Campsie home extension process: assess the existing structure, design the addition, approve, build. Fixed price throughout.
Cost Guide
| Item | Estimated Range |
|---|---|
| Simple rear extension (single wall removal, no roof change) | $99,000 – $220,000 |
| Moderate extension (multiple openings, roof extended) | $220,000 – $420,000 |
| Complex extension (structural steel portals, re-roofing) | $420,000 – $660,000 |
| Second-storey tie-in (existing house re-engineered) | $390,000 – $720,000 |
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
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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
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 April 2026
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