Licensed Knockdown Rebuild Builder Northwood
NSW licensed KDR specialist in Northwood 2066. Asbestos-accredited demolition, Class M (sandstone ridges) / H–E (river fall) engineered slab, BASIX 2025, 6-year structural warranty on the new home.
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MBA NSW0476 300 300Quick Answer
A knockdown rebuild in Northwood costs $450,000–$1,200,000+. Standard single-storey from $450K, two-storey from $650K. Buildana manages demolition, Lane Cove Council approvals, and construction under one fixed-price contract.
Northwood Knockdown Rebuilds
KDR in Northwood is effectively impossible on most streets — Heritage Conservation Areas cover virtually all blocks and Council protects the tightly-held character. Where any non-contributory replacement exists (rare), harbour-fall engineering dominates: suspended slabs, rock excavation $25K–$60K. Demolition $55K–$95K. Realistic premium turnkey $2.5M–$5M for 320–480m² rebuild. Pre-construction 8–10 months.
On the ground in Northwood (2066), the practical numbers shape every knockdown rebuild. Class M (sandstone ridges) / H–E (river fall) soil — extremely reactive clay — pushes engineered foundation work into the $45,000–$80,000 bracket on most 600–1,400m² blocks. R2 Low Density / R3 Medium (Lane Cove village) zoning under Lane Cove Council sets the building envelope, with R3 Medium Density pockets that open up dual occupancy options on qualifying lots. Median sale price across Northwood sits at $4.0M–$8.0M, which frames the build-versus-buy decision from the start. Nearest rail is Wollstonecraft (3 km, ferry from Longueville), and that proximity affects everything from rental demand to construction site access.
Buildana manages the complete knockdown rebuild process in Northwood — 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 Northwood from $450K
- Lane Cove Council DA and CDC approvals managed
- Demolition and asbestos removal included
- Class M (sandstone ridges) / H–E (river fall) soil — engineered slab design included
- Typical blocks 600–1,400m² in Northwood
- Single and two-storey designs available
- 6-year structural warranty
- Free site assessment — near Wollstonecraft (3 km, ferry from Longueville) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Why Knockdown Rebuild in Northwood?
Northwood is the small harbour-fall enclave between Longueville and Greenwich on Woodford Bay. Federation mansions and inter-war heritage on 600–1,400m² blocks. Heritage Conservation Areas cover virtually all streets. Sandstone-dominant with substantial harbour fall. Premium for protected harbour outlook and tightly-held character.
Northwood's established streetscape and median house prices of $4.0M–$8.0M reflect a premium location within Lane Cove. Building costs sit above the metro average, offset by stronger capital growth and rental returns. Transport access via Wollstonecraft (3 km, ferry from Longueville) connects Northwood to the wider Sydney network. 1880s–1940s heritage-era housing stock across Northwood is prime for knockdown rebuild — replacing dated layouts and materials with modern, NCC-compliant homes that maximise block potential. Soil conditions in Northwood (Class M (sandstone ridges) / H–E (river fall), extremely reactive) are factored into every Buildana foundation design.
KDR in Lane Cove works the village R2 detached stock and inland Lane Cove North — Heritage Conservation Areas restrict scope on Greenwich, Longueville, Northwood and Linley Point peninsulas where extension/restoration dominates. Sandstone-dominant soil; rock excavation $20K–$50K typical, deeper on river-fall lots. Demolition $40K–$80K with asbestos prevalent in pre-1990 stock. Realistic premium turnkey $1.6M–$3.5M for 280–450m² build. Bushfire BAL ratings drive material upgrades $15K–$50K on bush-edge lots in Lane Cove West and Riverview. Pre-construction 4–7 months including heritage and tree consents on protected streets.
Planning Controls — Lane Cove Council
Lane Cove LEP 2009 & Lane Cove DCP 2010. R2 Low Density dominates the LGA: FSR 0.5:1, building height 9.5m, front setback 7.5–9m varying by streetscape, landscaped area 35–40%. R3 Medium Density along Burns Bay Road, Longueville Road and the Lane Cove village core permits FSR up to 0.8:1. R4 High Density and B4 Mixed Use along the St Leonards / Crows Nest fringe in Lane Cove North. The 2024 Crows Nest Metro SEPP TOD precinct overlay reaches the south-eastern portion of Lane Cove North, opening density bonuses inside 400m of Crows Nest Metro station. Heritage Conservation Areas cover most older streets in Greenwich, Longueville, Northwood, Linley Point, Lane Cove West, Riverview and parts of Lane Cove village. Tree Preservation Order applies LGA-wide. River-fall and harbour-fall sites on the Lane Cove River and Sydney Harbour peninsulas (Greenwich, Longueville, Northwood, Linley Point) require engineered slab and retaining design — sandstone rock excavation $20K–$60K standard. Lane Cove National Park frontage on Lane Cove West and Riverview adds bushfire BAL ratings on bush-edge lots.
Knockdown-rebuild builder in Northwood — key facts
- Suburb
- Northwood, NSW 2066
- Council / LGA
- Lane Cove Council (Lane Cove)
- Primary zoning
- R2 Low Density / R3 Medium (Lane Cove village)
- Typical lot size
- 600–1,400m²
- Soil class
- Class M (sandstone ridges) / H–E (river fall)
- Median house price
- $4.0M–$8.0M
- Home era
- 1880s–1940s heritage
- 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
Building in Northwood — Local Context
Foundations & Slab Design for Northwood
Northwood's ground is extremely reactive clay (Class M (sandstone ridges) / H–E (river fall)). On a 600–1,400m² block, that translates to engineered slab work in the $45,000–$80,000 bracket for a rebuild. Double-check any quote that doesn't itemise the slab — 'slab as per engineering' usually means the builder will hit you with a variation once the soil report comes back. We commission the geotech upfront, before pricing, so the cost in your contract reflects what your block actually needs. If your neighbour's home shows movement cracks above architraves or below window sills, that's a signal worth knowing before you finalise design — Buildana's site assessment looks at adjacent stock too.
Planning Controls in Northwood
Northwood is zoned R2 Low Density / R3 Medium (Lane Cove village) with R3 Medium Density pockets. Lane Cove Council controls FSR, height limits (typically 8.5–9m), site coverage, landscaped area minimums, and setbacks. For a rebuild, the binding constraints on most 600–1,400m² blocks here are: front setback (around 4.5–6m), side setbacks (1.0–1.5m articulated), rear (3–6m depending on lot depth), and landscaped area (usually 35–40%). Buildana's design team works to those numbers from the first sketch — no late re-design when council comes back with comments.
Cost vs Value in Northwood
Median sale price in Northwood is $4.0M–$8.0M. For a rebuild, the decision tree runs through three numbers: build cost, expected post-completion value, and how long you plan to hold. New custom homes in Northwood re-set the property at the top of the local price band, with new-build premium of 10–20% over comparable established stock. We map this in feasibility before you commit.
Building to Suit Northwood
Northwood's R2 Low Density / R3 Medium (Lane Cove village) zoning, 600–1,400m² blocks, and 1880s–1940s heritage housing stock set the design context. For a rebuild, the practical implications: new builds that respond to Northwood's streetscape sell and live better than generic catalogue homes dropped on the block. Buildana's design phase resolves all of this before you commit to construction pricing.
Building Activity in Northwood Right Now
Northwood is seeing steady residential activity — 1880s–1940s heritage-era stock is reaching end-of-life on dozens of streets, driving steady knockdown rebuild activity month over month. Buildana sits inside that pipeline — we know what's getting approved, what's stalling, and why.
Builder's Take on Northwood
Timing on Northwood KDR: demolition 5–10 business days, slab 3–4 weeks post-demo, new home 24–40 weeks to handover. Total 7–11 months. Compared to selling and rebuying in the same suburb, you save ~12 weeks of dead time plus $80K–$140K in stamp duty and agent fees.
One-contract KDR in Northwood vs two-contractor (demo + builder separately): two-contractor looks cheaper on paper but the site risk transfers to you between the crews. Old footings, buried tanks, boundary disputes — all your problem. Buildana's single contract keeps the risk with the contractor.
Northwood vs Nearby Suburbs
Northwood vs nearby suburbs — key metrics for knocking down and rebuilding.
| Suburb | Median Price | Typical Lot | Soil Class | Era | Station |
|---|---|---|---|---|---|
| Northwood2066this suburb | $4.0M–$8.0M | 600–1,400m² | Class M (sandstone ridges) / H–E (river fall) | 1880s–1940s heritage | Wollstonecraft (3 km, ferry from Longueville) |
| Longueville2066 | $3.5M–$7.5M | 600–1,400m² | Class M (sandstone ridges) / H–E (river fall) | 1880s–1940s heritage | Wollstonecraft (4 km, ferry) |
| Greenwich2065 | $3.5M–$8.0M | 500–1,200m² | Class M (sandstone ridges) / H–E (river fall) | 1880s–1940s heritage | Wollstonecraft (1.5 km, ferry) |
| Riverview2066 | $3.0M–$5.5M | 500–1,200m² | Class M (sandstone ridges) / H–E (river fall) | 1900s–1950s | Wollstonecraft (3 km) |
Median price, soil class, and lot size shape build feasibility and final cost. Buildana assesses every site against these and other constraints during the free feasibility stage.
Have a question about your project?
Talk to our team — free site assessment and fixed-price quote.
How It Works
From First Call to Final Key
On-site assessment covers block measurements, soil conditions (Class M (sandstone ridges) / H–E (river fall)), tree preservation checks, service locations, and asbestos identification on your 1880s–1940s heritage-era home. Clear feasibility report before you commit.
⏱Approval pathway gets locked at design stage based on FSR, height, setbacks, and any overlays. Most Northwood KDRs go CDC for speed; we use DA when the design wants to push past complying development limits.
⏱Existing home demolished by licensed contractors. Asbestos removed and disposed of to EPA standards.
⏱Construction starts the week demolition finishes — no idle site, no momentum lost. Slab pour usually within the first month, frame stand soon after.
⏱Final inspection, Occupation Certificate, 6-year structural warranty, keys, and maintenance guide. Services reconnected.
⏱Quality Promise
Northwood knockdown rebuild done cleanly: licensed demolition, compliant slab, new home built to NCC 2025. Fixed-price contract.
Cost Guide
| Item | Estimated Range |
|---|---|
| Demolish 1880s–1940s heritage fibro → modern brick double storey | $680,000 – $1,300,000 |
| Demolish brick veneer → new brick veneer (like-for-like uplift) | $620,000 – $1,110,000 |
| Demolish to downsize (smaller footprint) | $600,000 – $940,000 |
| Demolish to upsize (growing family) | $910,000 – $1,560,000 |
| Demolish older home, rebuild investment-grade | $730,000 – $1,170,000 |
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
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Last updated: 1 April 2026
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