Knockdown Rebuild Mays Hill — One Contract, Demo to Keys
Everything under one agreement in Mays Hill 2145: demolition, asbestos removal, site prep, design, approvals, engineering, new home construction, landscaping and Occupation Certificate.
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A knockdown rebuild in Mays Hill costs $450,000–$1,200,000+. Standard single-storey from $450K, two-storey from $650K. Buildana manages demolition, Cumberland City Council approvals, and construction under one fixed-price contract.
Knockdown Rebuild Builder in Mays Hill
A knockdown rebuild in Mays Hill suits the established stock on standard 450 to 650m² R2 and R3 blocks, in a small suburb between Parramatta and Merrylands. The proximity to Parramatta CBD drives strong demand for quality residential construction, so a rebuild sits well here.
The ground is Class M shale, which takes a standard engineered slab off a geotech. The older homes usually carry asbestos, so a licensed strip-out and clearance certificate lead the demolition.
On the R3 blocks over the 600m² minimum, a duplex can be the stronger play given the Parramatta proximity, so I run both feasibilities where the block allows.
We rebuild fixed-price, licence HBL 487805C. Get our knockdown rebuild feasibility before you commit.
Buildana manages the complete knockdown rebuild process in Mays Hill — from site assessment and architectural design through to DA or CDC approval, demolition management, and fixed-price construction to handover. One builder, one contract, one new home.
Read our KDR Cost Guide 2026 or use the Renovation vs KDR Calculator to compare options.
- New home in Mays Hill from $450K
- Cumberland City Council DA and CDC approvals managed
- Demolition and asbestos removal included
- Class M soil — engineered slab design included
- Typical blocks 450–650m² in Mays Hill
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near Westmead (1 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Close to Parramatta CBD
Mays Hill's position between Parramatta and Merrylands, close to the Parramatta CBD, drives strong demand for quality residential construction. On standard 450 to 650m² blocks, a rebuild resets a dated home into a modern one in a well-placed pocket.
The CBD proximity means a well-built home here holds its value.
Asbestos and the duplex question
The Class M shale takes a standard engineered slab off a geotech. The older stock usually carries asbestos, so a licensed strip-out and clearance certificate lead the demolition.
On the R3 blocks over 600m², the Parramatta proximity makes a duplex worth costing, so I run both feasibilities.
Knockdown-rebuild builder in Mays Hill — key facts
- Suburb
- Mays Hill, NSW 2145
- Council / LGA
- Cumberland City Council (Cumberland City)
- Primary zoning
- R2 Low Density & R3 Medium Density
- Typical lot size
- 450–650m²
- Soil class
- Class M
- Median house price
- $1.0M–$1.3M
- Home era
- 1950s–1970s
- Typical price range
- $450,000 – $1,200,000+
- Typical timeline
- 14–22 months including demolition
- Approval pathway
- CDC where eligible or DA for complex sites
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 |
|---|---|
| Demolish 1950s–1970s fibro → modern brick double storey | $540,000 – $1,030,000 |
| Demolish brick veneer → new brick veneer (like-for-like uplift) | $490,000 – $880,000 |
| Demolish to downsize (smaller footprint) | $470,000 – $740,000 |
| Demolish to upsize (growing family) | $720,000 – $1,240,000 |
| Demolish older home, rebuild investment-grade | $580,000 – $930,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Free site inspection of your Mays Hill property. We check lot dimensions, Cumberland City Council's planning controls, existing home condition, and potential asbestos.
⏱KDR is the chance to get the design right — the new build doesn't have to mimic the original layout. We start from your block's strengths (orientation, slope, views) and your family's brief, then design the home the original lot always deserved.
⏱Licensed demolition of existing 1950s–1970s-era dwelling. Asbestos removal by certified contractors (if present).
⏱Your new home goes up on the cleared site. Engineered slab sized for Class M soil, frame, roof, fit-out, kitchen, bathrooms, flooring, painting, driveway, and landscaping.
⏱Handover pack: OC, structural certificates, BASIX, appliance manuals and warranties, paint colour schedule, maintenance plan, and the keys. Six-year structural warranty kicks in from OC date — keep the documentation safe for any future sale.
⏱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 Mays Hill 2145. Cumberland City Council regulations and local controls are covered on each page.