Licensed Home Extension Builder Hoxton Park
NSW licensed extension specialist. Hoxton Park 2171 extensions on 1980s–2000s-era homes require structural sign-off, Class H footings, and matched connection — we engineer and document properly.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Hoxton Park 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.
Second-Storey & Rear Additions in Hoxton Park
A home extension in Hoxton Park is usually the smarter money against moving. The established 1980s to 2000s homes here sit on standard blocks with backyard depth, and at a $900K to $1.1M median the cost of selling, buying bigger and paying stamp duty would fund most of a decent rear addition. Good local schools and community amenities are why families stay and build rather than leave.
One thing we engineer for every time: this is Liverpool LGA, which sits on Class H reactive clay, so new footings must be designed to move with the old ones or be isolated from them, otherwise the junction cracks the house. Brick veneer from this era extends cleanly at ground level and needs steel to go up, so out is the sensible direction on these blocks.
What I would check first on your Hoxton Park house: the reactive-clay footing junction, the frame type, and the rear yard depth. Those set the engineering and the plan.
We build these fixed-price, licence HBL 487805C. Get a quote built on your actual soil.
Buildana manages the complete home extension process in Hoxton Park — 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 Hoxton Park from $150K
- Liverpool City Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Class H soil — structural engineering included
- 1980s–2000s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Liverpool (5 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Build instead of moving
The established 1980s to 2000s homes sit on standard blocks with backyard depth, and at a $900K to $1.1M median, selling and buying bigger would fund most of a rear addition in stamp duty and fees.
Good local schools and community amenities are why families stay and build rather than leave the pocket.
Engineered for the clay
This is Liverpool LGA, which sits on Class H reactive clay, so new footings must be designed to move with the old ones or be isolated from them, otherwise the junction cracks the house.
Brick veneer from this era extends cleanly at ground level and needs steel to go up, so out is the sensible direction here.
Home extension builder in Hoxton Park — key facts
- Suburb
- Hoxton Park, NSW 2171
- Council / LGA
- Liverpool City Council (Liverpool City)
- Primary zoning
- R2 Low Density
- Typical lot size
- 500–650m²
- Soil class
- Class H
- Median house price
- $900K–$1.1M
- Home era
- 1980s–2000s
- 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 (1980s–2000s Hoxton Park home) | $130,000 – $270,000 |
| Kitchen/living open-out to backyard | $150,000 – $340,000 |
| Second storey for teenagers/office | $270,000 – $530,000 |
| Extension + bathroom (growing family) | $190,000 – $390,000 |
| Full rear + roof tie-in (entertainer's zone) | $340,000 – $580,000 |
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 Hoxton Park 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.
⏱Design phase covers the extension layout, junction with existing structure, window and door placement, and external finish to match your Hoxton Park home's streetscape. Multiple design options presented.
⏱Documentation pack covers structural engineering for the new footings sized to match existing depths on Class H 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 H 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
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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Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Hoxton Park 2171. Liverpool City Council regulations and local controls are covered on each page.