Mount Druitt Home Extension Builder — Live In, Build On
Buildana extends homes across Mount Druitt 2770 while you stay in place. 1960s–1980s-era structure, Blacktown City Council rules, weatherproofing during build — all managed locally from Fairfield.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Mount Druitt costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Blacktown City Council approvals, and construction under one fixed-price contract.
Mount Druitt Home Extensions — Fixed Price
A home extension in Mount Druitt runs the sharpest value maths in the whole LGA. At a $650K to $850K median, the money you would sink into moving — stamp duty, agents, the lot — would build you a serious rear wing outright, and the generous 550 to 700m² blocks have the depth to take one. Dollar for dollar, few places shift liveability and value further.
The house still has to pass the read, mind. Solid brick takes the wing; the tired oldest homes get a rebuild comparison instead. Where the work opens the 1960s fabric, a licensed strip-out clears it, and an engineered footing junction ties old to new across the reactive pockets.
The station and the hub keep the fundamentals of the place real, so a well-built addition holds its value rather than getting stranded.
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 Mount Druitt — 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 Mount Druitt from $150K
- Blacktown City Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Class M–H soil — structural engineering included
- 1960s–1980s-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Mount Druitt station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
The sharpest maths in the LGA
At Mount Druitt's entry point the cost of moving builds the wing itself, and the generous blocks take a full family addition that shifts liveability and value more per dollar than almost anywhere.
The station and hub keep the fundamentals real, so the finished home holds its ground.
Fabric and clay handled
The 1960s fabric is stripped out under licence wherever the work opens it.
Where the ground is reactive, the footing junction is engineered to shift with the house, and both jobs stay inside the fixed price from the outset.
Home extension builder in Mount Druitt — key facts
- Suburb
- Mount Druitt, NSW 2770
- 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
- $650K–$850K
- Home era
- 1960s–1980s
- 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 |
|---|---|
| Small rear extension (up to 30m²) | $79,000 – $160,000 |
| Medium rear/side extension (30–60m²) | $160,000 – $280,000 |
| Large ground-floor extension (60–100m²) | $280,000 – $440,000 |
| Second-storey addition (60–120m²) | $250,000 – $480,000 |
| Wrap-around (ground + 1st floor) | $440,000+ |
| Structural engineering & tie-in | Included |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. We assess your Mount Druitt home — existing structure, block size (550–700m²), 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 Mount Druitt home's streetscape. Multiple design options presented.
⏱The Mount Druitt construction phase. Fixed price, programmed, supervised. Documentation pack covers structural engineering for the new footings sized to match existing depths on Class M–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 M–H soil, structural connection to existing home, frame, fit-out, and finishes. Weekly updates from your project manager.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. 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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