Knockdown Rebuild Narrabeen — From $450K All-In
Fixed-price knockdown rebuild in Narrabeen 2101. Demolition, new home, all Northern Beaches Council approvals under one contract. No surprises, no variation trail.
HIA Member
MBA NSW0476 300 300Quick Answer
A knockdown rebuild in Narrabeen 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.
Demolish and Rebuild in Narrabeen
Two different knockdown rebuilds happen in Narrabeen depending on which way your block faces. Beach-side, you are managing the Coastal Hazard zone and salt exposure on 1920s to 1960s stock, lagoon-side, coastal acid sulphate soils on the lagoon-edge lots change excavation handling and drainage design. Same suburb, different engineering, and both sit over Hawkesbury Sandstone with rock excavation typical.
Heritage Conservation Areas cover the older streets, so a pre-war beach house needs a status check before demolition is assumed. Blocks run 450 to 800m² and medians of $2.6M to $5.5M-plus reward getting it right, this is a suburb where families rebuild to stay, not to flip. The lagoon, the beach and the surf club are not going anywhere, your tired original probably should.
What I would check first on a Narrabeen block: whether it is beach-side or lagoon-side and the engineering that follows, the heritage status, and the sandstone. Those decide the path.
We build these fixed-price, licence HBL 487805C. We will tell you which set of rules applies before you plan around the wrong one.
Buildana manages the complete knockdown rebuild process in Narrabeen — 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 Narrabeen from $450K
- Northern Beaches Council DA and CDC approvals managed
- Demolition and asbestos removal included
- Hawkesbury Sandstone — engineered slab design included
- Typical blocks 450–800m² in Narrabeen
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near B-Line bus to CBD (Narrabeen interchange) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Which way does your block face?
Two different rebuilds happen in Narrabeen. Beach-side, you manage the Coastal Hazard zone and salt exposure on 1920s to 1960s stock. Lagoon-side, coastal acid sulphate soils change excavation handling and drainage design.
Same suburb, different engineering, and both sit over Hawkesbury Sandstone with rock excavation typical. So the first thing we establish is which set of rules applies.
Rebuild to stay
Heritage Conservation Areas cover the older streets, so a pre-war beach house needs a status check before demolition is assumed. Blocks run 450 to 800m², and medians of $2.6M to $5.5M-plus reward getting it right.
This is a suburb where families rebuild to stay, not to flip. We tell you which rules apply before you plan around the wrong one.
Knockdown-rebuild builder in Narrabeen — key facts
- Suburb
- Narrabeen, NSW 2101
- Council / LGA
- Northern Beaches Council (Northern Beaches)
- Primary zoning
- R2 Low
- Typical lot size
- 450–800m²
- Soil class
- Hawkesbury Sandstone
- Median house price
- $2.6M–$5.5M+ (oceanfront)
- Home era
- 1920s–1960s 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.
Cost Guide
| Item | Estimated Range |
|---|---|
| Demolish 1920s–1960s heritage + premium contemporary fibro → modern brick double storey | $600,000 – $1,150,000 |
| Demolish brick veneer → new brick veneer (like-for-like uplift) | $550,000 – $980,000 |
| Demolish to downsize (smaller footprint) | $530,000 – $830,000 |
| Demolish to upsize (growing family) | $800,000 – $1,380,000 |
| Demolish older home, rebuild investment-grade | $640,000 – $1,030,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
KDR feasibility is two questions: what can the block legally support, and is it cheaper to build new than fix old. We answer both in writing within a week, with cost ranges grounded in current Narrabeen market data — not generic Sydney averages.
⏱New home designed for your Narrabeen block — maximising FSR, orientation, and streetscape. Working drawings, engineering, and BASIX prepared.
⏱Full demolition management: asbestos survey report, licensed removal where required, structural demolition, site clearing, temporary fencing, and dust/noise management. Northern Beaches Council demolition permit obtained beforehand.
⏱Build sequence: site prep, slab pour, frame stand, roof, brickwork, lock-up, plumbing and electrical rough-in, plaster, internal fit-out, kitchen install, tiling, flooring, painting, external works, final clean. Each stage signed off before payment release.
⏱Defect-free handover inspection, OC issued, keys in hand. Permanent services reconnected, landscaping complete, 6-year structural warranty, and full maintenance guide provided.
⏱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
Book a Narrabeen Knockdown Rebuild Assessment
Free KDR site assessment for Narrabeen 2101. We'll assess your block, estimate cost, and provide a fixed-price budget.
Start Your ProjectMore in Narrabeen
Other Buildana services in Narrabeen
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Narrabeen 2101. Northern Beaches Council regulations and local controls are covered on each page.