Knockdown Rebuild North Wahroonga — Demo to Handover in 12 Months
North Wahroonga 2076 KDR with tight programme: demolition (3–4 weeks), new home (24–40 weeks). CDC fast-track or Ku-ring-gai Council DA. Weekly progress updates.
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MBA NSW0476 300 300Quick Answer
A knockdown rebuild in North Wahroonga costs $450,000–$1,200,000+. Standard single-storey from $450K, two-storey from $650K. Buildana manages demolition, Ku-ring-gai Council approvals, and construction under one fixed-price contract.
North Wahroonga Knockdown Rebuilds
A knockdown rebuild in North Wahroonga is a premium bush-edge project on large blocks — 1,000 to 2,000m² lots holding mostly post-war and 1960s stock, closer to the Hornsby boundary than central Wahroonga. The bigger blocks come at slightly lower per-m² land prices than the heritage pockets to the south, and the bush setting is a genuine draw.
Garigal-adjacent reserves sit on multiple sides, so on the eastern fringe a bushfire assessment and BAL rating can apply to the design. I check the bushfire mapping for your block upfront so it shapes the build from the start.
The ground is Class M, taking a standard engineered slab off a geotech. The post-war stock can carry asbestos, so a licensed strip-out leads the demolition where needed. There is no station here — bus connections to Wahroonga and Hornsby.
We rebuild fixed-price, licence HBL 487805C. Get our knockdown rebuild feasibility before you commit.
Buildana manages the complete knockdown rebuild process in North Wahroonga — 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 North Wahroonga from $450K
- Ku-ring-gai Council DA and CDC approvals managed
- Demolition and asbestos removal included
- Class M soil — engineered slab design included
- Typical blocks 1,000–2,000m² in North Wahroonga
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near Wahroonga (2 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Big blocks, bush setting
North Wahroonga's 1,000 to 2,000m² blocks are larger than the heritage pockets to the south, and at slightly lower per-m² land prices. With Garigal-adjacent reserves on multiple sides, it is quieter and more bush-oriented, and a rebuild lets you design a substantial home around the setting.
The post-war and 1960s stock is generally past a sensible renovation, so a knockdown resets it well.
Bushfire on the fringe, standard ground
On the eastern fringe, backing onto the reserves, a bushfire assessment and BAL rating can apply. I check the mapping for your block upfront so the design is set up for it.
The Class M ground takes a standard engineered slab off a geotech, and the post-war stock can carry asbestos, so a licensed strip-out leads the demolition where needed.
Knockdown-rebuild builder in North Wahroonga — key facts
- Suburb
- North Wahroonga, NSW 2076
- Council / LGA
- Ku-ring-gai Council (Ku-ring-gai)
- Primary zoning
- R2 Low Density
- Typical lot size
- 1,000–2,000m²
- Soil class
- Class M
- Median house price
- $2.4M–$3.4M
- 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.
How It Works
From First Call to Final Key
We assess your North Wahroonga block — lot size (typical 1,000–2,000m²), R2 Low Density zoning, setbacks, FSR, and existing dwelling condition. Asbestos survey included. You'll know feasibility and budget before committing.
⏱Complete design package: floor plans, elevations, 3D renders, structural engineering, geotech, BASIX, stormwater, and all documentation Ku-ring-gai Council requires. Approval managed start to finish.
⏱Pre-demolition: dilapidation report on adjoining properties (protects you against unfounded damage claims), service disconnections, asbestos clearance, neighbour notification. Then 1–2 weeks of physical demolition with material sorted at site for recycling where possible.
⏱Fixed-price construction: engineered slab, frame, lock-up, fit-out, external works. 8–12 months depending on size. Weekly progress reports with photos and milestone tracking.
⏱Same address, completely different home. Permanent gas, water, electrical, NBN reconnected and tested. Council waste collection re-registered. Mailbox reinstalled. Move-in ready, not move-in plus 100 small jobs.
⏱Quality Promise
North Wahroonga knockdown rebuild done cleanly: licensed demolition, compliant slab, new home built to NCC 2025. Fixed-price contract.
Cost Guide
| Item | Estimated Range |
|---|---|
| Entry-level single storey KDR | $590,000 – $790,000 |
| Mid-range double storey KDR | $880,000 – $1,220,000 |
| Architectural KDR | $1,220,000 – $1,830,000 |
| Luxury KDR (high-spec finishes) | $1,830,000+ |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
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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Last updated: 1 April 2026
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Book a North Wahroonga Knockdown Rebuild Assessment
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Costs, approval pathway and fixed-price contract detail for every other build type we deliver in North Wahroonga 2076. Ku-ring-gai Council regulations and local controls are covered on each page.