Knockdown Rebuild Frenchs Forest — Demo to Handover in 12 Months
Frenchs Forest 2086 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 Frenchs Forest 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.
Frenchs Forest Knockdown Rebuilds
A knockdown rebuild in Frenchs Forest is a strong Beaches play anchored by the Northern Beaches Hospital — 1960s to 1980s brick on 600 to 900m² blocks with sandstone topography. The hospital has lifted demand, including from medical staff, and the aging stock suits a modern rebuild.
The sandstone means rock excavation of $40,000 to $120,000 is typical, priced from a geotech bore. On the bushland-fringe lots, BAL-12.5 to BAL-29 ratings shape the design.
The older homes can carry asbestos, so a licensed strip-out leads the demolition.
We rebuild fixed-price, licence HBL 487805C. Get our feasibility, with the rock and bushfire costed, before you commit.
Buildana manages the complete knockdown rebuild process in Frenchs Forest — 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 Frenchs Forest from $450K
- Northern Beaches Council DA and CDC approvals managed
- Demolition and asbestos removal included
- Hawkesbury Sandstone — engineered slab design included
- Typical blocks 600–900m² in Frenchs Forest
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near B-Line bus to CBD (Forest Way interchange) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Hospital-anchored demand
The Northern Beaches Hospital has genuinely lifted Frenchs Forest — medical-staff demand, infrastructure investment and the town-centre planning that followed. On 600 to 900m² blocks of aging 1960s-80s brick, a rebuild fits exactly where the suburb is heading.
The generous blocks give a modern family design room to work.
Rock and fringe bushfire
The sandstone means rock excavation of $40,000 to $120,000 is typical, priced from a real geotech bore. On the bushland-fringe lots, BAL-12.5 to BAL-29 ratings shape the design.
The older homes can carry asbestos, so a licensed strip-out leads the demolition.
Knockdown-rebuild builder in Frenchs Forest — key facts
- Suburb
- Frenchs Forest, NSW 2086
- Council / LGA
- Northern Beaches Council (Northern Beaches)
- Primary zoning
- R2 Low
- Typical lot size
- 600–900m²
- Soil class
- Hawkesbury Sandstone
- Median house price
- $2.2M–$3.4M
- Home era
- 1960s–1980s
- 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
KDR starts with an honest look at the existing house. Sometimes it's worth keeping. Most Frenchs Forest homes from the 1960s–1980s — especially fibro and brick-veneer — are beyond the point where renovation makes sense. We tell you straight.
⏱Demolition is pre-approved to run parallel with rebuild design. Asbestos cleared, services abolished, site stripped in a single mobilisation. Geotech reconfirms Class Hawkesbury Sandstone soil with the old house gone.
⏱New house goes up on the same footprint or a better one, whichever serves the block. Modern NCC envelope, better orientation, fit-for-purpose room sizes. The suburb stays the same; the house finally fits it.
⏱Final handover: new OC, six-year structural warranty, all the documentation on your Frenchs Forest block you'd get on a greenfield build. The only difference is you still live in the street you chose.
⏱Quality Promise
Frenchs Forest knockdown rebuild done cleanly: licensed demolition, compliant slab, new home built to NCC 2025. Fixed-price contract.
Cost Guide
| Item | Estimated Range |
|---|---|
| Clean demolition + standard rebuild | $540,000 – $840,000 |
| Asbestos-affected demolition + rebuild | $570,000 – $900,000 |
| Sloping site + cut/fill + rebuild | $630,000 – $1,010,000 |
| Heritage-affected or complex site | $670,000 – $1,230,000 |
| Premium finishes & architectural design | $1,060,000+ |
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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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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