Dual Occupancy Specialists McMahons Point — Licensed Duplex Builder
NSW licensed duplex builder in McMahons Point 2060. Torrens or strata subdivision, North Sydney Council planning expertise, full contract management for investor-grade builds.
HIA Member
MBA NSW0476 300 300Quick Answer
A duplex in McMahons Point costs $750,000–$1,500,000+ for dual occupancy construction. Attached duplex from $750K, detached from $1M. Buildana manages feasibility, North Sydney Council approvals, construction and subdivision under one fixed-price contract.
Duplex Builder in McMahons Point
Duplex in McMahons Point is effectively impossible — Heritage Conservation Areas cover the entire residential core. Council defaults to retention of Federation and sandstone heritage. Where any non-contributory replacement is theoretically viable (vanishingly rare), harbour-fall engineering dominates cost. Realistic advice for most clients is extension/restoration. Mandatory paid feasibility.
On the ground in McMahons Point (2060), the practical numbers shape every duplex development. Class M (sandstone) / H–E (harbour fall) soil — extremely reactive clay — pushes engineered foundation work into the $45,000–$80,000 bracket on most 200–450m² 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 McMahons Point sits at $3.2M–$6.5M, which frames the build-versus-buy decision from the start. Nearest rail is North Sydney (1 km), McMahons Point ferry, and that proximity affects everything from rental demand to construction site access.
Buildana manages the full duplex development process in McMahons Point — 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 McMahons Point from $750K
- North Sydney Council DA and CDC approvals managed
- R2 and R3 zones — established dual occ. provisions
- Minimum lot size 500m² in McMahons Point
- Class M (sandstone) / H–E (harbour fall) soil — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near North Sydney (1 km), McMahons Point ferry 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 McMahons Point?
McMahons Point is the harbourside peninsula north of the Harbour Bridge with Blues Point Tower at the tip. Federation cottages, sandstone terraces and apartments on tight 200–450m² blocks with significant harbour fall. Heritage Conservation Areas cover the entire residential core. Sandstone-dominant; engineered foundations standard. Premium for direct harbour and bridge views.
McMahons 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 (1 km), McMahons Point ferry connects McMahons Point to the wider Sydney network. Dual occupancy is well-established in McMahons Point's R3 zones. Minimum lot size for duplex: 500m². Class M (sandstone) / H–E (harbour fall) soil (extremely reactive) is standard for McMahons Point — Buildana includes engineered slab design in every quote.
Duplex feasibility in North Sydney runs differently to most Sydney LGAs because most of the residential stock is already medium or high density. The opportunity is concentrated in R2 detached pockets (Cammeray, parts of Cremorne, Neutral Bay, Waverton, Wollstonecraft) where 500–700m² lots can support attached dual occupancy at 0.5:1 FSR. R3 and R4 zones are typically already developed with apartments — the play there is unit-block redevelopment, not duplex. The Victoria Cross 2024 SEPP TOD precinct (400m around Victoria Cross Metro station) opens major density bonuses for medium and high-density redevelopment in central North Sydney. Heritage Conservation Areas in Kirribilli, Lavender Bay, McMahons Point, Milsons Point and parts of every other suburb effectively rule out duplex on protected streets. End values $3.5M–$6.5M per attached dwelling on prime blocks. Mandatory paid feasibility before any duplex contract — the planning answer determines everything.
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.
Duplex builder in McMahons Point — key facts
- Suburb
- McMahons Point, NSW 2060
- Council / LGA
- North Sydney Council (North Sydney)
- Primary zoning
- R3 Medium / R4 / B4 mixed
- Typical lot size
- 200–450m²
- Soil class
- Class M (sandstone) / H–E (harbour fall)
- Median house price
- $3.2M–$6.5M
- Home era
- 1880s–1940s heritage
- 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 McMahons Point — Local Context
McMahons Point Block Realities
Typical McMahons Point blocks are 200–450m² on Class M (sandstone) / H–E (harbour fall) ground (extremely reactive clay). For a duplex, the structural envelope is more constrained than the headline lot size suggests — once you subtract setbacks, easements, landscaped area requirements, and any tree preservation, the actual buildable area is usually 35-45% of the block. We map that early in the feasibility stage so you're designing to what's actually allowed, not what looks possible from the title plan. Foundation cost band on most McMahons Point blocks: $45,000–$80,000.
Planning Controls in McMahons Point
McMahons Point is zoned R3 Medium / R4 / B4 mixed with R3 Medium Density pockets. North Sydney Council controls FSR, height limits (typically 8.5–9m), site coverage, landscaped area minimums, and setbacks. For a duplex, the binding constraints on most 200–450m² 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.
McMahons Point Build Economics
McMahons Point sits in the $3.2M–$6.5M price band, which is the framing for any duplex development decision. On a 200–450m² block here, the build-versus-buy maths usually favours dual occupancy where the lot meets 500m² minimum and zoning allows. Free Buildana feasibility runs the numbers against your actual block before any commitment.
Building to Suit McMahons Point
McMahons Point's R3 Medium / R4 / B4 mixed zoning, 200–450m² blocks, and 1880s–1940s heritage housing stock set the design context. For a duplex, the practical implications: dual occupancy designs need to fit two dwellings within an envelope that doesn't dominate single-dwelling neighbours — articulation, materials, and roof form do most of the work. Buildana's design phase resolves all of this before you commit to construction pricing.
Realistic McMahons Point Timeline
End-to-end timeline for a duplex development in McMahons 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 itself runs 9-14 months once you're on the ground. Buildana provides a dated programme in every contract, not a vague "12-18 months" range.
Builder's Take on McMahons Point
Duplex returns in McMahons Point 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 McMahons Point: Torrens is cleaner if your block supports the subdivision (typically needs 500m² 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.
McMahons Point vs Nearby Suburbs
McMahons Point vs nearby suburbs — key metrics for building a duplex.
| Suburb | Median Price | Typical Lot | Soil Class | Min Duplex Lot | Station |
|---|---|---|---|---|---|
| McMahons Point2060this suburb | $3.2M–$6.5M | 200–450m² | Class M (sandstone) / H–E (harbour fall) | 500m² | North Sydney (1 km), McMahons Point ferry |
| Lavender Bay2060 | $3.2M–$6.0M | 200–450m² | Class M (sandstone) / H–E (harbour fall) | 500m² | North Sydney (1 km) |
| North Sydney2060 | $2.5M–$4.5M | 250–500m² | Class M (sandstone ridges) / H to E (harbour fall) | 500m² | North Sydney + Victoria Cross Metro 2024 |
| Waverton2060 | $3.0M–$5.0M | 350–650m² | Class M (sandstone) / H–E (harbour fall) | 500m² | Waverton |
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) | $1,010,000 – $1,350,000 |
| Attached duplex (2 × 220–260m²) | $1,350,000 – $1,760,000 |
| Detached duplex (2 × 220–280m²) | $1,620,000 – $2,090,000 |
| Strata/Torrens subdivision | $20,000 – $41,000 |
| Demolition (if KDR duplex) | $24,000 – $54,000 |
| Council contributions | $14,000 – $81,000+ |
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. Feasibility covers the planning side and the financial side. Yes-or-no on whether the block supports dual occupancy under North Sydney Council controls, plus indicative end values, build cost, and likely yield. The point is to kill bad sites before you spend on design — not after. Dual occupancy floor plans designed for your McMahons Point block — attached or detached configuration, vehicle access, private open space, and full North Sydney Council compliance.
⏱The McMahons Point construction phase. Fixed price, programmed, supervised. Full approval management: Statement of Environmental Effects, plans, reports, and all supporting documentation lodged with North Sydney Council or private certifier. We handle RFIs and conditions. CC follows. Construction follows a tight programme: dual slabs in one mobilisation, paired frame stand, simultaneous lock-up, then trades rotate between sides for fit-out so no day is lost waiting on availability. The schedule is engineered, not optimistic.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Both dwellings handed over with individual Occupation Certificates. Subdivision lodged for separate titles. Separate metering installed. 6-year structural warranty per dwelling.
⏱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
Ready to take the next step?
Free consultation — no obligation, no pressure.
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
Buildana builds across greater Sydney — with deep roots in Western Sydney's Fairfield, Liverpool, Cumberland, Canterbury-Bankstown, and Blacktown LGAs.
Last updated: 1 July 2025
Explore Related Topics
Duplex in McMahons Point — Book Site Assessment
Free duplex feasibility assessment for McMahons Point 2060. We'll check your block, estimate yield, and provide a fixed-price budget.
Start Your Project