Turramurra Duplex Builder — Western Sydney Dual Occupancy
Buildana is a local Ku-ring-gai duplex builder. We know which Turramurra streets support Torrens title subdivision, which suit strata, and what Ku-ring-gai Council will approve. Free site feasibility.
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A duplex in Turramurra costs $750,000–$1,500,000+ for dual occupancy construction. Attached duplex from $750K, detached from $1M. Buildana manages feasibility, Ku-ring-gai Council approvals, construction and subdivision under one fixed-price contract.
Duplex Builder in Turramurra
Turramurra duplex feasibility centres on the TOD zone within 400m of the station — outside that, R2 duplex needs 1,200m²+ on a non-heritage block, which excludes most of the village core. Back-street post-war stock on the right block size can work. Realistic end value $4.5M–$5.5M per dwelling for premium 280–320m² builds. Heritage assessment, tree report, and Council pre-DA conversation before any contract.
Most Turramurra blocks run 700–1,100m² on Class M ground. Duplex feasibility hinges on lot size (1,200m² minimum under Ku-ring-gai Council), frontage width, and whether your block sits inside any overlay — flood, heritage, biodiversity. Worth assessing before design spend. Median price band: $2.8M–$4.2M. Local services anchor around Turramurra IGA village & Bobbin Head Road.
Buildana manages the full duplex development process in Turramurra — from feasibility assessment and architectural design through to DA or CDC approval, and fixed-price construction to dual handover. One builder, one contract, two homes.
Read our Complete Duplex Building Guide or explore duplex developments across Sydney.
- Dual occupancy in Turramurra from $750K
- Ku-ring-gai Council DA and CDC approvals managed
- R2 zoning — eligible under July 2024 reform
- Minimum lot size 1,200m² in Turramurra
- Class M soil — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near Turramurra station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Why Build a Duplex in Turramurra?
Turramurra is the central village of upper Ku-ring-gai — Bobbin Head Road heading east toward the national park, Pacific Highway shops, and a station on the T1 line. Heritage Conservation Areas around the village limit demolition options on certain streets, but the back-street blocks (700–1,100m²) generally allow KDR with standard Council controls. Soil grades M on the ridge with E pockets near drainage lines.
Turramurra's established streetscape and median house prices of $2.8M–$4.2M reflect a premium location within Ku-ring-gai. Building costs sit above the metro average, offset by stronger capital growth and rental returns. Turramurra benefits from Turramurra station on the doorstep — walkable rail access lifts both rental demand and property values. Dual occupancy is now permissible under the July 2024 reform in Turramurra's R2 zones. Minimum lot size for duplex: 1,200m². Soil conditions in Turramurra (Class M, moderately reactive) are factored into every Buildana foundation design.
Duplex feasibility in Ku-ring-gai is tight — Council's R2 dominance means dual occupancy is restricted to lots over 1,200m² with frontages typically 18m+. The 2024 NSW TOD reforms now permit some medium-density inside 400m of Roseville, Lindfield, Killara, Gordon, Pymble, Turramurra and Warrawee stations, but Council reviews built form, tree retention and heritage impact aggressively. Heritage Conservation Areas effectively rule out duplex on protected streets. Where feasibility lands, you're looking at premium attached dual occupancy with 250–320m² per dwelling, end value $4.5M–$6.5M each on the prime blocks. Buildana runs a paid feasibility before any duplex contract — too much money rides on the planning answer to skip that step.
Planning Controls — Ku-ring-gai Council
Ku-ring-gai LEP 2015 & Ku-ring-gai DCP. R2 Low Density: FSR 0.3:1 on lots under 1,200m² (sliding down to ~0.27:1 on larger lots), building height 9.5m, front setback 9–12m varying by streetscape, landscaped area 50%, deep soil 30%. Heritage Conservation Areas cover significant portions of Gordon, Killara, Pymble, Wahroonga, Warrawee, Roseville and Turramurra — heritage character assessment is required before any DA. Tree Preservation Order is one of Sydney's strictest: any tree over 5m high or 0.45m trunk circumference needs Council consent before removal. Bushfire planning (Planning for Bushfire Protection 2019) applies in St Ives, St Ives Chase, North Turramurra, North Wahroonga and bush-edge lots — BAL assessment is mandatory. The 2024 NSW TOD reforms permit medium density inside 400m of Roseville, Lindfield, Killara, Gordon, Pymble, Turramurra and Warrawee stations, but Council scrutiny on built form and tree retention remains heavy.
Duplex builder in Turramurra — key facts
- Suburb
- Turramurra, NSW 2074
- Council / LGA
- Ku-ring-gai Council (Ku-ring-gai)
- Primary zoning
- R2 Low Density
- Typical lot size
- 700–1,100m²
- Soil class
- Class M
- Median house price
- $2.8M–$4.2M
- Home era
- 1920s–1960s (heavy heritage stock)
- Typical price range
- $750,000 – $1,500,000+
- Typical timeline
- 14–22 months design to handover
- Approval pathway
- CDC for compliant dual-occupancy, else DA
Building in Turramurra — Local Context
What Turramurra Soil Means for Your Duplex
Most blocks across Turramurra (2074) classify as Class M — moderately reactive. Translation for a duplex development: foundation cost lands somewhere between $15,000–$32,000, depending on building footprint and how the engineer reads the borehole. Standard waffle raft slabs work on most Turramurra sites, sized by an engineer to the actual classification. Buildana includes the geotech report, structural engineering, and slab design in every quote. No site allowance, no provisional sum.
Ku-ring-gai Council & Approval Pathway
Turramurra sits inside the Ku-ring-gai LGA, governed by Ku-ring-gai Council. For a duplex development, the approval question is usually CDC vs DA. Duplexs in Turramurra usually need a full DA through Ku-ring-gai Council — typically 40–90+ days from lodgement, longer if neighbour notification triggers objections. Either way, we manage submission, RFIs, and re-lodgement in-house — you don't deal with the council.
Where the Money Goes on a Turramurra Duplex
Cost breakdown for a typical duplex in Turramurra: structure and frame around 30%, slab and foundations 8–14% (driven by Class M soil), roofing and external 10–12%, services (plumbing, electrical, HVAC) 12–18%, fit-out (kitchen, bathrooms, joinery) 18–25%, and finishes (paint, tiles, flooring) 8–12%. The remaining 4–6% covers approvals, certifications, and site establishment. Buildana itemises every line so you see what you're paying for — no lump sums hiding margin.
Designing for the Turramurra Streetscape
Turramurra's housing stock is predominantly from the 1920s–1960s (heavy heritage stock).. The local anchor is Turramurra IGA village & Bobbin Head Road. For a duplex development, the streetscape question matters more than most builders admit — a brand-new double-storey on a street of single-storey 1920s–1960s (heavy heritage stock) weatherboards will draw council attention on bulk and scale, even if technically compliant. Buildana designs the front elevation to read appropriately for the street while modernising the floor plan and structure behind it. Materials palette, roof pitch, fenestration rhythm — all chosen to settle into the existing rhythm rather than fight it.
Building Activity in Turramurra Right Now
Turramurra is seeing steady residential activity — the July 2024 R2 duplex reform opened up dozens of blocks across the suburb that previously couldn't develop, and Ku-ring-gai Council is processing dual occupancy DAs at a higher volume than at any point in the last decade. Buildana sits inside that pipeline — we know what's getting approved, what's stalling, and why.
Builder's Take on Turramurra
Duplex returns in Turramurra work only if the construction contract is fixed. I've seen people get tempted by "cost plus" arrangements that come in $200K over at handover. When you're building two dwellings simultaneously, any margin erosion doubles. Fixed price isn't just nice-to-have on a duplex — it's the only sane structure.
Strata vs Torrens in Turramurra: Torrens is cleaner if your block supports the subdivision (typically needs 1,200m² or larger), and each dwelling sits on its own lot. Strata is the fallback when Torrens isn't feasible — still separately saleable but with shared structure title. Buildana draws both options into the initial feasibility.
Turramurra vs Nearby Suburbs
Turramurra vs nearby suburbs — key metrics for building a duplex.
| Suburb | Median Price | Typical Lot | Soil Class | Min Duplex Lot | Station |
|---|---|---|---|---|---|
| Turramurra2074this suburb | $2.8M–$4.2M | 700–1,100m² | Class M | 1,200m² | Turramurra |
| Warrawee2074 | $3.2M–$4.6M | 900–1,500m² | Class M | 1,200m² | Warrawee |
| Pymble2073 | $3.2M–$5.0M | 1,000–1,800m² | Class M | 1,200m² | Pymble |
| South Turramurra2074 | $2.8M–$4.2M | 800–1,500m² | Class M–H | 1,200m² | Turramurra (2 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.
Cost Guide
| Item | Estimated Range |
|---|---|
| Attached duplex (2 × 180–220m²) | $950,000 – $1,260,000 |
| Attached duplex (2 × 220–260m²) | $1,260,000 – $1,640,000 |
| Detached duplex (2 × 220–280m²) | $1,510,000 – $1,950,000 |
| Strata/Torrens subdivision | $19,000 – $38,000 |
| Demolition (if KDR duplex) | $23,000 – $50,000 |
| Council contributions | $13,000 – $76,000+ |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. We assess your Turramurra block — lot size (typical 700–1,100m²), width, R2 Low Density zoning, setbacks, FSR, landscaped area requirements under Ku-ring-gai Council's LEP and DCP. Minimum lot for duplex: 1,200m². You'll know viability before spending on design. Design phase covers unit layout, access, parking, private open space, and waste management for dual occupancy on your Turramurra site. You approve final plans before we move to lodgement.
⏱The Turramurra construction phase. Fixed price, programmed, supervised. Duplex approvals get scrutinised harder than single dwellings — neighbour notification, overshadowing, privacy, traffic, waste. Our SEE addresses each on the front foot rather than reactively. Cleaner submission, fewer conditions, faster CC. Fixed-price construction of both dwellings from slab to keys. Class M engineered footings, frame, lock-up, internal fit-out, and external works. Weekly progress reports.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Subdivision registration starts in parallel with final fitout so titles issue close to handover, not 6 months after. Buildana coordinates the surveyor and Ku-ring-gai Council clearance — important if you're planning to sell one side immediately to fund the next move.
⏱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 July 2025
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