Knockdown Rebuild Warriewood — Demo to Handover in 12 Months
Warriewood 2102 KDR with tight programme: demolition (3–4 weeks), new home (24–40 weeks). CDC fast-track or Northern Beaches Council DA. Weekly progress updates.
HIA Member
MBA NSW0476 300 300Quick Answer
A knockdown rebuild in Warriewood costs $450,000–$1,200,000+. Standard single-storey from $450K, two-storey from $650K. Buildana manages demolition, Northern Beaches Council approvals, and construction under one fixed-price contract.
New Home on Your Warriewood Block
A knockdown rebuild in Warriewood depends on which part you hold, because the suburb splits between the original oceanfront-and-village streets and the 2010s master-planned Warriewood Valley Release Area. On the original streets, a rebuild of the aging stock works well; on the Valley release lots, the homes are too new to knock down.
On the original streets, the stack applies: the Coastal Hazard zone on direct beachfront, salt-grade specs, sandstone rock priced from a geotech bore, and the Warriewood Valley CASS on the lagoon-margin lots needing managed excavation.
The pre-war stock carries asbestos and lead paint, so a licensed strip-out leads the demolition. On the Valley release lots, a renovation is usually the honest answer.
We rebuild fixed-price, licence HBL 487805C. Get our feasibility before you commit.
Buildana manages the complete knockdown rebuild process in Warriewood — 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 Warriewood from $450K
- Northern Beaches Council DA and CDC approvals managed
- Demolition and asbestos removal included
- Hawkesbury Sandstone — engineered slab design included
- Typical blocks 300–800m² (master-planned + original) in Warriewood
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near B-Line bus to CBD (Mona Vale interchange) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Original streets or Valley release
Warriewood splits in two: the original oceanfront-and-village streets with aging Federation and post-war stock that suits a rebuild, and the 2010s master-planned Valley Release Area where the homes are too new to knock down and a renovation is the honest answer.
I check which your block is first, because the right product swings on it.
The coastal stack on the original streets
On the original streets, the Coastal Hazard zone applies on direct beachfront, salt-grade specs are essential, the sandstone rock is priced from a geotech bore, and the Warriewood Valley CASS on the lagoon-margin lots needs managed excavation.
The pre-war stock carries asbestos and lead paint, so a licensed strip-out leads the demolition.
Knockdown-rebuild builder in Warriewood — key facts
- Suburb
- Warriewood, NSW 2102
- Council / LGA
- Northern Beaches Council (Northern Beaches)
- Primary zoning
- R2 Low
- Typical lot size
- 300–800m² (master-planned + original)
- Soil class
- Hawkesbury Sandstone
- Median house price
- $2.4M–$5M+ (oceanfront)
- Home era
- 1920s–1960s heritage + 2010s+ master-planned + premium contemporary
- 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 |
|---|---|
| Single storey rebuild (150–200m²) | $540,000 – $770,000 |
| Double storey rebuild (200–300m²) | $770,000 – $1,190,000 |
| Premium rebuild (300m²+) | $1,190,000+ |
| Demolition (1920s–1960s heritage + 2010s+ master-planned + premium contemporary Warriewood home) | $20,000 – $45,000 |
| Asbestos removal (if present) | $9,000 – $28,000 |
| Service disconnections & reinstatement | $3,000 – $9,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. On-site assessment covers block measurements, soil conditions (Class Hawkesbury Sandstone), tree preservation checks, service locations, and asbestos identification on your 1920s–1960s heritage + 2010s+ master-planned + premium contemporary-era home. Clear feasibility report before you commit. Approval pathway gets locked at design stage based on FSR, height, setbacks, and any overlays. Most Warriewood KDRs go CDC for speed; we use DA when the design wants to push past complying development limits. Either way, all documentation prepared and lodged in-house.
⏱The Warriewood construction phase. Fixed price, programmed, supervised. Existing home demolished by licensed contractors. Asbestos removed and disposed of to EPA standards. Services disconnected, site cleared and prepped for construction. Buildana manages all permits and logistics. Construction starts the week demolition finishes — no idle site, no momentum lost. Slab pour usually within the first month, frame stand soon after. From frame stand to handover runs 6–9 months for a typical Warriewood family home.
⏱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, keys, and maintenance guide. Services reconnected. Your new home near Warriewood Beach + Warriewood Square + Warriewood Valley Release.
⏱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
Explore Related Topics
Knockdown Rebuild in Warriewood
Free KDR site assessment for Warriewood 2102. We'll assess your block, estimate cost, and provide a fixed-price budget.
Start Your ProjectMore in Warriewood
Other Buildana services in Warriewood
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Warriewood 2102. Northern Beaches Council regulations and local controls are covered on each page.