Knockdown Rebuild Spit Junction — From $450K All-In
Fixed-price knockdown rebuild in Spit Junction 2088. Demolition, new home, all Mosman Council approvals under one contract. No surprises, no variation trail.
HIA Member
MBA NSW0476 300 300Demolish and Rebuild in Spit Junction
A knockdown rebuild in Spit Junction depends on which part you hold, because this is the commercial and transport hub of Mosman around Military Road and Spit Road — mixed-use B4 zoning along the spine, with R3 medium-density and detached homes on the side streets. On a detached side-street block, a rebuild works well.
The residential side streets carry Federation cottages, inter-war flats and post-war stock on 350 to 700m² blocks, and Heritage Conservation Areas cover several of them, so heritage is worth checking. On the R3 land, a dual-occupancy can be worth costing where a block clears the 650m² minimum.
The ground is Class M sandstone on the ridge, grading to the harbour fall on some streets, so the slab is designed off a real geotech. The older stock can carry asbestos and lead paint, so a licensed strip-out leads the demolition.
We rebuild fixed-price, licence HBL 487805C. Get our feasibility before you commit.
Buildana manages the complete knockdown rebuild process in Spit Junction — 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 Spit Junction from $450K
- Mosman Council DA and CDC approvals managed
- Demolition and asbestos removal included
- M — engineered slab design included
- Typical blocks 350–700m² in Spit Junction
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near North Sydney (5 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Detached side streets around the hub
Spit Junction is the commercial and transport hub of Mosman around Military Road and Spit Road, with mixed-use B4 zoning along the spine and R3 medium-density and detached homes on the side streets. On a detached side-street block of 350 to 700m², a rebuild works well, close to Mosman Square and the shops.
On the B4 spine itself, the conversation is usually redevelopment rather than a single home.
Heritage, yield and sandstone
Heritage Conservation Areas cover several side streets, so a listed block goes down the DA path. On the R3 land, a dual-occupancy can be worth costing where a block clears the 650m² minimum, so I run both where relevant.
The Class M sandstone ridge grades to the harbour fall on some streets, so the slab is designed off a real geotech. The older stock can carry asbestos and lead paint, so a licensed strip-out leads the demolition.
Knockdown-rebuild builder in Spit Junction — key facts
- Suburb
- Spit Junction, NSW 2088
- Council / LGA
- Mosman Council (Mosman)
- Primary zoning
- R3
- Typical lot size
- 350–700m²
- Soil class
- M
- Median house price
- $3.5M–$5.5M
- Home era
- 1900s–1960s + apartments
- 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.
Quality Promise
Every Buildana knockdown rebuild in Spit Junction is delivered under a fixed-price contract — site assessment through to defect-free handover.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. 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 Spit Junction market data — not generic Sydney averages. New home designed for your Spit Junction block — maximising FSR, orientation, and streetscape. Working drawings, engineering, and BASIX prepared. CDC or DA lodged with Mosman Council.
⏱The Spit Junction construction phase. Fixed price, programmed, supervised. Full demolition management: asbestos survey report, licensed removal where required, structural demolition, site clearing, temporary fencing, and dust/noise management. Mosman 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.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. 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
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Last updated: 1 April 2026
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