Home Extension Builder Hassall Grove — Approved in 60 Days
Hassall Grove 2761 extensions with tight approval timelines. CDC where eligible (~15 days), DA via Blacktown City Council in 40–60 days. Construction 12–24 weeks depending on scope.
HIA Member
MBA NSW0476 300 300Hassall Grove Home Extensions & Additions
A home extension in Hassall Grove tends to follow the same story: a solid 1990s home on a 550 to 700m² block that suited a smaller household than the one living in it now. The bones are good, the land is there, and a rear wing quietly delivers the bedrooms and living the original plan never stretched to.
The fabric is clean, so the spend goes into the new space rather than into fixing what is behind the walls. Where the ground turns reactive, the footing junction between old and new is engineered to move as one, which is the detail that keeps the join from cracking a few winters on.
At an $800K to $1.0M median the cost of moving up would build most of the addition by itself, and the block gives the design genuine room to work with.
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 Hassall Grove — 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 Hassall Grove from $150K
- Blacktown City Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Class M–H soil — structural engineering included
- 1990s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Mount Druitt (3 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Good bones, more room needed
Hassall Grove's 1990s homes hold bigger households than they were drawn for, and a rear wing puts that right on a block with real depth, at an entry point that keeps the maths generous.
Because the fabric is clean, the budget flows into the new space rather than remediation.
Ground sorted, junction engineered
On reactive ground, the junction between the old footings and the new is engineered to shift together.
That work sits inside the fixed price from the outset, with nothing sprung on you mid-build.
Home extension builder in Hassall Grove — key facts
- Suburb
- Hassall Grove, NSW 2761
- Council / LGA
- Blacktown City Council (Blacktown City)
- Primary zoning
- R2 Low Density
- Typical lot size
- 550–700m²
- Soil class
- Class M–H
- Median house price
- $800K–$1.0M
- Home era
- 1990s
- 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.
Quality Promise
Our Hassall Grove home extensions connect old-to-new cleanly. Matched brickwork, tied roofline, no awkward transitions.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. On-site assessment of your 1990s-era home in Hassall Grove. We check structural condition, block dimensions (550–700m²), setback availability, and Blacktown City Council's DCP requirements. Written feasibility and cost estimate provided. Designing an extension is half about the new space and half about how it joins the old one. Doorway position, ceiling height transition, floor level matching, light wells — the junction makes or breaks how the finished home feels.
⏱The Hassall Grove construction phase. Fixed price, programmed, supervised. We lodge your extension approval — CDC for eligible designs or DA through Blacktown City Council. Full documentation including structural engineering for Class M–H soil, BASIX, and shadow diagrams. CC issued before works start. For ground-floor rear extensions you usually stay in the house during the build, with temporary weatherproofing at the junction wall until the new section is locked up. Second-storey additions need a 4–8 week relocation during the roof-off and frame-up phase.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Final inspection, Occupation Certificate, 6-year structural warranty. Your Hassall Grove home now has the space your family needs.
⏱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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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 Hassall Grove 2761. Blacktown City Council regulations and local controls are covered on each page.