Home Extension Builder Green Valley — More Space, Same Address
Fixed-price home extensions in Green Valley 2168. Ground floor, second storey and rear additions. Liverpool City Council approvals managed. Free design consultation.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Green Valley costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Liverpool City Council approvals, and construction under one fixed-price contract.
Home Extension Builder in Green Valley
Green Valley homeowners with 1970s–1990s-era properties are increasingly turning to home extensions to gain space without the disruption of a full move. With typical lots of 500–650m², most Green Valley properties can accommodate ground-floor or second-storey extensions under Liverpool City Council's planning controls. Buildana manages feasibility, design, approvals, and construction for Green Valley extension projects under one fixed-price contract.
Buildana manages the complete home extension process in Green Valley — 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 Green Valley from $150K
- Liverpool City Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Class H soil — structural engineering included
- 1970s–1990s-era homes assessed for extension suitability
- Connect new to existing — seamless finish
- 6-year structural warranty
- Free design consultation — near Liverpool (5 km) station
Have a question about your project?
Talk to our team — free site assessment and fixed-price quote.
How It Works
From First Call to Final Key
We assess your Green Valley home — existing structure, block size (500–650m²), R2 Low Density zoning, setbacks, FSR, and your space requirements. You'll know what's achievable before spending on detailed design.
⏱Extension designed to complement your existing home — floor plan, elevations, structural connection details. Liverpool City Council compliance built into the design from day one.
⏱DA through Liverpool City Council (40–90 days) or CDC (10–15 business days). Construction Certificate obtained before works commence. Buildana manages all submissions.
⏱Extension built with minimal disruption — new footings (Class H soil), frame, connection to existing dwelling, fit-out. Weekly updates from your project manager.
⏱Defect-free handover with seamless connection between old and new. 6-year structural warranty. Your Green Valley home — with the space you need.
⏱Quality Promise
Every Buildana home extension in Green Valley is delivered under a fixed-price contract — from design consultation through to defect-free handover.
Our Team
Oliver Alameri
Founder / Director / Builder
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
Cost Guide
| Item | Estimated Range |
|---|---|
| Rear ground-floor extension | $150,000 – $300,000 |
| Second-storey addition | $300,000 – $500,000 |
| Large multi-room extension | $400,000 – $600,000+ |
| Structural engineering | $3,000 – $8,000 |
| Council contributions | $2,000 – $15,000 |
| Temporary weatherproofing | $2,000 – $5,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
Ready to take the next step?
Free consultation — no obligation, no pressure.
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
Buildana builds across greater Sydney — with deep roots in Western Sydney's Fairfield, Liverpool, Cumberland, Canterbury-Bankstown, and Blacktown LGAs.
Extend Your Home in Green Valley
Free design consultation for Green Valley 2168. We'll assess your home, design the extension, and provide a fixed-price quote.
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