Licensed Home Extension Builder Greenacre
NSW licensed extension specialist. Greenacre 2190 extensions on 1950s–1970s-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 Greenacre 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.
Extending Homes in Greenacre
A home extension in Greenacre spends the suburb's wide blocks — 550 to 800m² under 1950s-70s fibro and brick, with the rear depth for the full family wing.
The era read shapes the work: brick extends cleanly, fibro gets the licensed asbestos strip-out wherever the addition touches it, and the honest comparison against rebuilding is run where the house is tired.
At the $1.0M to $1.3M median, extending keeps the established streets and the family networks that make Greenacre home.
We build these fixed-price, licence HBL 487805C. Ask us to measure what your block can hold.
Buildana manages the complete home extension process in Greenacre — 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 Greenacre from $150K
- Canterbury-Bankstown Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Class M soil — structural engineering included
- 1950s–1970s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Bankstown (2 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Wide blocks, full wings
Greenacre's 550 to 800m² blocks take the full family addition — second living, extra bedrooms, second bathroom — without crowding the yard the household actually uses.
The multigenerational demand here is exactly what the rear wing serves.
The era read keeps it honest
Brick extends cleanly; fibro gets the licensed strip-out where touched; and where the house is genuinely tired, I run the extension-versus-rebuild comparison before you spend on the wrong one.
The strip-out and the honest comparison both come before any spend, priced up front.
Home extension builder in Greenacre — key facts
- Suburb
- Greenacre, NSW 2190
- Council / LGA
- Canterbury-Bankstown Council (Canterbury-Bankstown)
- Primary zoning
- R2 Low Density
- Typical lot size
- 550–800m²
- Soil class
- Class M
- Median house price
- $1.0M–$1.3M
- Home era
- 1950s–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
Everything that has to be right before we touch the ground. Free consultation at your Greenacre home. We inspect the existing structure, check Canterbury-Bankstown Council's controls, measure available space, and discuss what you need. You get a clear scope, budget range, and timeline before committing. Two design moves are usually on the table: match the existing house so the extension reads as original, or contrast with it so the new section is clearly modern. Both work — choice is aesthetic, and we'll show 3D renders of both before you commit.
⏱The Greenacre construction phase. Fixed price, programmed, supervised. CDC (10–15 business days) or DA through Canterbury-Bankstown Council depending on scope. Structural engineering, BASIX, and all documentation prepared and lodged. Construction Certificate obtained. Construction phase connects new to existing — footings, frame, roof tie-in, waterproofing at junction, internal fit-out and external finish. Staged works minimise disruption to your daily routine in Greenacre.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Final inspection focuses on the integration: paint blend, flooring transitions, ceiling height, junction waterproofing, sound transmission. The extension shouldn't feel bolted on — it should feel like the house was always meant to be this size.
⏱Quality Promise
Greenacre home extension specialists: we work on your home while you live in it, weatherproof the site nightly, finish clean.
Cost Guide
| Item | Estimated Range |
|---|---|
| Small rear extension (up to 30m²) | $95,000 – $190,000 |
| Medium rear/side extension (30–60m²) | $190,000 – $340,000 |
| Large ground-floor extension (60–100m²) | $340,000 – $530,000 |
| Second-storey addition (60–120m²) | $290,000 – $580,000 |
| Wrap-around (ground + 1st floor) | $530,000+ |
| Structural engineering & tie-in | Included |
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
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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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Other Buildana services in Greenacre
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Greenacre 2190. Canterbury-Bankstown Council regulations and local controls are covered on each page.