Home Extension Builder Kurraba Point — Approved in 60 Days
Kurraba Point 2089 extensions with tight approval timelines. CDC where eligible (~15 days), DA via North Sydney Council in 40–60 days. Construction 12–24 weeks depending on scope.
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MBA NSW0476 300 300Home Extension Builder in Kurraba Point
Extension in Kurraba Point is the dominant scope given heritage controls and harbour-fall sites that rule out KDR. Federation mansion additions, harbourside reconfiguration common. Suspended slab engineering and rock anchoring drive cost. Realistic budget $600K–$1.5M for a premium 80–150m² addition. Pre-construction 6–9 months including heritage assessment.
On the ground in Kurraba Point (2089), the practical numbers shape every home extension. Class M (sandstone) / H–E (harbour fall) soil — extremely reactive clay — pushes engineered foundation work into the $45,000–$80,000 bracket on most 300–600m² blocks. R3 Medium / R4 / B4 mixed zoning under North Sydney Council sets the building envelope, with R3 Medium Density pockets that open up dual occupancy options on qualifying lots. Median sale price across Kurraba Point sits at $3.2M–$6.5M, which frames the build-versus-buy decision from the start. Nearest rail is North Sydney (3 km, ferry to Circular Quay), and that proximity affects everything from rental demand to construction site access.
Buildana manages the complete home extension process in Kurraba Point — from design consultation and structural engineering through to DA or CDC approval, and fixed-price construction to handover. Extend your home without the stress.
Read our Home Extension Cost Guide 2026 or explore extension approval pathways in NSW.
- Home extensions in Kurraba Point from $150K
- North Sydney Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Class M (sandstone) / H–E (harbour fall) soil — structural engineering included
- 1900s–1940s + 1960s+ apartments-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near North Sydney (3 km, ferry to Circular Quay) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Why Extend Your Home in Kurraba Point?
Kurraba Point is the harbourside peninsula between Neutral Bay and Shell Cove. Premium residential — Federation and inter-war stock plus harbourside apartments on 300–600m² blocks with substantial fall to the water. Sandstone soil; engineered slabs and retaining standard. Heritage controls heavy. Kurraba Point ferry wharf, no train.
Kurraba Point's established streetscape and median house prices of $3.2M–$6.5M reflect a premium location within North Sydney. Building costs sit above the metro average, offset by stronger capital growth and rental returns. Transport access via North Sydney (3 km, ferry to Circular Quay) connects Kurraba Point to the wider Sydney network. 1900s–1940s + 1960s+ apartments-era homes in Kurraba Point often have good structural foundations worth building on. Extensions add living space at a fraction of the full rebuild cost. Class M (sandstone) / H–E (harbour fall) soil (extremely reactive) is standard for Kurraba Point — Buildana includes engineered slab design in every quote.
Extensions in North Sydney are mostly heritage-sensitive — Federation and inter-war terraces, cottages and harbourside mansions in Kirribilli, Lavender Bay, McMahons Point, Milsons Point, Cammeray, Neutral Bay, Waverton, Wollstonecraft and Cremorne. Council expects retention of heritage detail (stone walls, leadlight, slate roofs, decorative plasterwork) on character work. Second-storey additions on harbour-fall lots are engineering-intensive — suspended slabs, structural underpinning, harbour-view setback negotiation. Crows Nest Metro 2024 SEPP affects the Crows Nest extension scene with redevelopment pressure. Realistic budget $400K–$1.2M for a thoughtful 60–120m² heritage-grade addition; $300K–$700K for simpler post-war stock outside heritage zones.
Planning Controls — North Sydney Council
North Sydney LEP 2013 & North Sydney DCP 2013. R3 Medium Density dominates much of the LGA: FSR up to 0.85:1, building height 8.5–12m varying by precinct. R4 High Density along the North Sydney CBD edge and the Victoria Cross Metro 2024 SEPP precinct permits substantially higher FSR and height. B3/B4 mixed-use zones along Pacific Highway, Miller Street and Military Road. R2 pockets exist in Cammeray, Cremorne, Neutral Bay and parts of Waverton/Wollstonecraft with FSR 0.5:1 and minimum 9m frontage. Heritage Conservation Areas cover virtually all of Kirribilli, Lavender Bay, McMahons Point and Milsons Point, plus pockets of Cammeray, Neutral Bay, North Sydney, Waverton, Wollstonecraft and Cremorne. Tree Preservation Order applies LGA-wide. The 2024 Victoria Cross Metro SEPP TOD precinct opens density bonuses inside 400m of Victoria Cross Metro station — major redevelopment opportunity in central North Sydney. Crows Nest Metro 2024 SEPP also affects the Crows Nest portion of the LGA. Substantial harbour-fall sites on Kirribilli, Milsons Point, McMahons Point, Lavender Bay, Waverton, Cremorne Point and Kurraba Point require engineered slab and retaining design.
Home extension builder in Kurraba Point — key facts
- Suburb
- Kurraba Point, NSW 2089
- Council / LGA
- North Sydney Council (North Sydney)
- Primary zoning
- R3 Medium / R4 / B4 mixed
- Typical lot size
- 300–600m²
- Soil class
- Class M (sandstone) / H–E (harbour fall)
- Median house price
- $3.2M–$6.5M
- Home era
- 1900s–1940s + 1960s+ apartments
- Typical price range
- $150,000 – $600,000+
- Typical timeline
- 6–12 months design to handover
- Approval pathway
- CDC for most rear extensions, DA for second-storey
Building in Kurraba Point — Local Context
What Kurraba Point Soil Means for Your Extension
Most blocks across Kurraba Point (2089) classify as Class M (sandstone) / H–E (harbour fall) — extremely reactive clay. Translation for a home extension: foundation cost lands somewhere between $45,000–$80,000, depending on building footprint and how the engineer reads the borehole. Reactive soils move with seasonal moisture. A waffle pod alone won't cut it on a Class M (sandstone) / H–E (harbour fall) site — you need stiffened edge beams, sometimes piered footings, and careful detailing around wet areas to stop differential movement showing up as cracking. Buildana includes the geotech report, structural engineering, and slab design in every quote. No site allowance, no provisional sum.
What North Sydney Council Wants to See
Approval in Kurraba Point comes down to documentation quality. North Sydney Council processes a high volume of residential applications, and the ones that get approved fast share three traits: clean drawings that show every required setback dimension on plan; a BASIX certificate that matches the actual specification (not a stand-in); and an engineering package sized correctly for the Class M (sandstone) / H–E (harbour fall) ground. We prepare every document at full lodgement standard the first time.
What a Extension Costs in Kurraba Point
Kurraba Point's median house price sits at $3.2M–$6.5M. That's the number that decides whether a home extension stacks up financially. If you're spending more than 50% of $3.2M–$6.5M on a extension, the economics tilt toward knockdown rebuild instead. Worth running the numbers properly before locking in scope. Buildana provides itemised quotes — no provisional sums, no allowances, no "as per engineering" line items.
What Makes a Extension Work in Kurraba Point
Kurraba Point (2089) is part of North Sydney. North Sydney (3 km, ferry to Circular Quay) from the nearest station. Building well here means understanding what the suburb actually rewards — and what it punishes. Reward: thoughtful orientation, family-scale outdoor entertaining, durable materials that look right against the 1900s–1940s + 1960s+ apartments streetscape, and floor plans that handle multi-generational living without feeling cramped. Punish: over-glazing on west elevations (summer heat is brutal), thin slab specs on Class M (sandstone) / H–E (harbour fall) ground, generic project-home elevations that ignore the street rhythm. Buildana has built across North Sydney long enough to know where the line sits.
Realistic Kurraba Point Timeline
End-to-end timeline for a home extension in Kurraba Point, lodgement-realistic: 8-14 weeks for DA, depending on neighbour notification and any RFI rounds. Add 2-3 weeks for documentation pack assembly before lodgement (BASIX, geotech for Class M (sandstone) / H–E (harbour fall), contour survey, hydraulic). Add 1 week for Construction Certificate post-approval. Construction runs 3-6 months depending on scope. Buildana provides a dated programme in every contract, not a vague "12-18 months" range.
Builder's Take on Kurraba Point
Second storey on a Kurraba Point home: the existing single-storey footings usually need reinforcement, which adds $15K–$40K. The roof comes off. The house is exposed for 4–8 weeks (weatherproofed nightly). Clients often underestimate the disruption — but the result is a doubling of floor area for 50% of the cost of a rebuild.
BASIX re-certification on extensions catches people out. Any extension over 50m² triggers BASIX on the combined envelope. Your existing home might be well short of 7-star, so the extension has to pull the whole house closer to compliance. That can mean insulation upgrades in the existing walls and ceiling.
Kurraba Point vs Nearby Suburbs
Kurraba Point vs nearby suburbs — key metrics for extending.
| Suburb | Median Price | Typical Lot | Soil Class | Era | Station |
|---|---|---|---|---|---|
| Kurraba Point2089this suburb | $3.2M–$6.5M | 300–600m² | Class M (sandstone) / H–E (harbour fall) | 1900s–1940s + 1960s+ apartments | North Sydney (3 km, ferry to Circular Quay) |
| Neutral Bay2089 | $2.5M–$4.0M | 300–550m² | Class M (sandstone ridges) / H to E (harbour fall) | 1900s–1940s + 1960s+ apartments | North Sydney (2 km) |
| Cremorne Point2090 | $3.5M–$8.0M | 350–700m² | Class M (sandstone) / H–E (harbour fall) | 1900s–1940s heritage + 1960s+ apartments | North Sydney (4 km, ferry to Circular Quay) |
| Cremorne2090 | $2.5M–$4.0M | 350–600m² | Class M (sandstone ridges) / H to E (harbour fall) | 1900s–1960s detached + apartments 1960s+ | North Sydney (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.
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Quality Promise
Our Kurraba Point home extensions connect old-to-new cleanly. Matched brickwork, tied roofline, no awkward transitions.
How It Works
From First Call to Final Key
Extension feasibility comes down to two things: what the existing structure can carry, and what North Sydney Council will let you build. We assess both at the consultation — no point designing for a second storey if the slab can't take the load.
⏱Extension designed to integrate with your existing Kurraba Point home — matching roof lines, materials, and flow between old and new sections. Floor plans, elevations, and 3D renders.
⏱All approval documentation prepared: structural drawings, BASIX, shadow analysis, stormwater, and statement of environmental effects (if DA). Lodged and managed through to Construction Certificate.
⏱Extension construction takes 3–6 months on average. Footings excavated and poured to match existing depth on Class M (sandstone) / H–E (harbour fall) soil, frame stand, roof tie-in (most weather-critical phase), lock-up, then internal fit-out at the same standard as the existing house.
⏱Defect-free inspection, OC issued, 6-year warranty on all new work. Junction between old and new sections waterproofed and warranted. Maintenance guide covers care of new and existing areas.
⏱Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
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Liverpool, NSW
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Last updated: 1 April 2026
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