Knockdown Rebuild Clontarf — Demo to Handover in 12 Months
Clontarf 2093 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 300Knockdown Rebuild Builder in Clontarf
A knockdown rebuild in Clontarf is an ultra-premium Middle Harbour project — Federation, inter-war and contemporary on 600 to 1,500m² blocks with substantial sandstone fall to the harbour, off the Spit Bridge. The harbour-front market here is among the Beaches' most exclusive, and a rebuild designs around the outlook.
Deep rock excavation of $60,000 to $150,000 is typical, and the harbour fall means suspended slabs and substantial retaining on the fall lots, all priced from a real geotech bore. The Foreshore Building Line restricts direct waterfront, and Heritage Conservation Areas cover the older streets.
The pre-war stock carries asbestos and lead paint, so a licensed strip-out leads the demolition.
We rebuild fixed-price, licence HBL 487805C. Get our feasibility, with the deep rock, fall and foreshore costed, before you commit.
Buildana manages the complete knockdown rebuild process in Clontarf — 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 Clontarf from $450K
- Northern Beaches Council DA and CDC approvals managed
- Demolition and asbestos removal included
- Hawkesbury Sandstone — engineered slab design included
- Typical blocks 600–1,500m² in Clontarf
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near B-Line bus to CBD via Mosman station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
An exclusive harbour peninsula
Clontarf's 600 to 1,500m² blocks fall to Middle Harbour off the Spit Bridge, in one of the Beaches' most exclusive harbour-front markets. A rebuild designs a substantial home around the harbour outlook the original Federation home rarely used well.
It is an address where the build has to match the setting.
Deep rock, fall, foreshore and heritage
Deep rock excavation of $60,000 to $150,000 is typical, with suspended slabs and substantial retaining on the fall lots — all priced from a real geotech bore. The Foreshore Building Line restricts direct waterfront, and Heritage Conservation Areas cover the older streets.
The pre-war stock carries asbestos and lead paint, so a licensed strip-out leads the demolition.
Knockdown-rebuild builder in Clontarf — key facts
- Suburb
- Clontarf, NSW 2093
- Council / LGA
- Northern Beaches Council (Northern Beaches)
- Primary zoning
- R2 Low
- Typical lot size
- 600–1,500m²
- Soil class
- Hawkesbury Sandstone
- Median house price
- $4.5M–$12M+ (harbour-front)
- Home era
- 1900s–1940s heritage + 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.
Last updated: 1 April 2026
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