Torrens or strata subdivision for my Henley duplex?

Hunters Hill Council rules and your site determine the answer. Torrens gives two fully independent titles and higher resale value — but requires wider lots and larger minimum areas. Strata is more flexible on narrow blocks but means shared insurance and common property. For Henley R2 Low Density (heritage predominant) / R3 Medium Density limited to Gladesville town centre sites we model both and show you the numbers before you commit.

Can I build a duplex on my R2 block in Henley?

In most cases, yes — the July 2024 reform made dual occupancy permissible in R2 zones across NSW, including Henley. Your block needs to meet minimum size (1,000m² under Hunters Hill DCP 2013 (highest in Sydney — heritage protection)) and width requirements. Henley also has R3 Medium Density zones with established dual occupancy provisions.

What soil and site conditions affect duplex construction in Henley?

Henley has predominantly Class Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage (moderately to highly reactive) soil, which affects dual-slab design and cost. Typical 500–1,200m² blocks need careful setback planning for two dwellings. Buildana includes geotechnical survey, contour survey, and feasibility assessment in every duplex quote.

What council contributions apply to duplexes in Henley?

Section 7.11/7.12 contributions for dual occupancy in Hunters Hill Council's area typically range $10,000–$60,000+ depending on the number of additional dwellings and lot size. These cover roads, drainage, parks, and community infrastructure. Amounts vary between LGAs. Buildana includes estimated council contributions in every duplex feasibility report.

Can I claim depreciation on a new duplex in Henley?

Yes — new dual occupancy in Henley typically generates $12,000–$22,000 in first-year depreciation deductions per dwelling, dropping to a long-term average of $7,000–$11,000 per year over the 40-year build life. Quantity surveyor reports cost $700–$1,000 per dwelling and pay back many times over. Investors often hold the rental side under a separate trust for asset protection — worth structuring before contract.

Should I sell or hold both halves of my duplex in Henley?

Selling both at completion captures the full development margin upfront — useful if you want to roll capital into the next project. Holding both gives long-term rental income and capital growth, with depreciation softening tax. The middle play — sell one to fund the build, hold the other rent-free — is what most Henley duplex clients actually do. Worth modelling all three with your accountant before contract.

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Dual Occupancy Developments in Henley

Henley in Hunters Hill Council offers strong duplex development potential with R2 Low Density (heritage predominant) / R3 Medium Density limited to Gladesville town centre zoning and typical lot sizes of 500–1,200m². R3 zones have established dual occupancy provisions, and many 1880s–1940s Federation/Victorian/inter-war heritage predominant (Heritage Conservation Areas cover virtually entire LGA) + premium contemporary infill-era blocks exceed the minimum 1,000m² under Hunters Hill DCP 2013 (highest in Sydney — heritage protection) required for duplex development. Hunters Hill Council manages DAs and CDCs for Henley, and Buildana has deep experience navigating their requirements for duplex construction across Hunters Hill Council.

Most Henley blocks run 500–1,200m² on Class Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage ground. Duplex feasibility hinges on lot size (1,000m² under Hunters Hill DCP 2013 (highest in Sydney — heritage protection) minimum under Hunters Hill Council), frontage width, and whether your block sits inside any overlay — flood, heritage, biodiversity. Worth assessing before design spend. Median price band: $3.5M–$6.5M typical heritage; $5.0M–$15M+ harbour-front Woolwich/Hunters Hill peninsula. Nearest rail is Wollstonecraft (5 km).

Buildana manages the full duplex development process in Henley — 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 Henley from $750K
Hunters Hill Council DA and CDC approvals managed
R2 and R3 zones — established dual occ. provisions
Minimum lot size 1,000m² under Hunters Hill DCP 2013 (highest in Sydney — heritage protection) in Henley
Class Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage soil — engineered dual-slab design included
Strata or Torrens title subdivision available
6-year structural warranty per dwelling
Free feasibility check — near Wollstonecraft (5 km) station

Why Build a Duplex in Henley?

Henley is the small Parramatta River foreshore suburb of Hunters Hill — Federation/inter-war heritage on 500–1,200m² blocks with substantial fall to the river. Heritage Conservation Areas cover most streets. Sandstone-dominant with deep rock excavation typical.

Residential blocks of 500–1,200m² across Henley (2111) provide solid building envelopes for a range of project types. Hunters Hill Council manages planning controls with well-established DCP provisions. Transport access via Wollstonecraft (5 km) connects Henley to the wider Sydney network. Dual occupancy is well-established in Henley's R3 zones. Minimum lot size for duplex: 1,000m² under Hunters Hill DCP 2013 (highest in Sydney — heritage protection). Class Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage soil (moderately to highly reactive) is standard for Henley — Buildana includes engineered slab design in every quote.

Duplex builder in Henley — key facts

Suburb: Henley, NSW 2111
Council / LGA: Hunters Hill Council (Hunters Hill Council)
Primary zoning: R2 Low Density (heritage predominant) / R3 Medium Density limited to Gladesville town centre
Typical lot size: 500–1,200m²
Soil class: Class Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage
Median house price: $3.5M–$6.5M typical heritage; $5.0M–$15M+ harbour-front Woolwich/Hunters Hill peninsula
Home era: 1880s–1940s Federation/Victorian/inter-war heritage predominant (Heritage Conservation Areas cover virtually entire LGA) + premium contemporary infill
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 Henley — Local Context

Henley Block Realities

Typical Henley blocks are 500–1,200m² on Class Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage ground (moderately to highly 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 Henley blocks: $24,000–$42,000.

Hunters Hill Council Planning Context

Hunters Hill Council has its own LEP and DCP layered over State planning controls. For building a duplex in Henley, the practical impact: Hunters Hill Council's DCP sets local rules for streetscape character, materials palette in some precincts, vehicle crossover widths, and tree retention. R2 Low Density (heritage predominant) / R3 Medium Density limited to Gladesville town centre zoning on most Henley blocks permits dual occupancy subject to lot size (1,000m² under Hunters Hill DCP 2013 (highest in Sydney — heritage protection) minimum) and frontage. Buildana checks every overlay (heritage, bushfire, flood, acid sulfate soil, biodiversity) before quoting.

Realistic Budget for Henley

For a duplex development in Henley, the budget conversation starts with what you actually want versus what the site supports. Most quotes you'll get from volume builders strip out the things that matter on Class Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage soil — engineered slab upgrade, decent waterproofing, real drainage design, BASIX-compliant glazing — and present them as variations after you sign. We don't do that. Buildana's contract is fixed-price including everything required to deliver a duplex that complies with NCC 2025 on a 500–1,200m² block in Henley.

What Makes a Duplex Work in Henley

Henley (2111) is part of Hunters Hill Council. Wollstonecraft (5 km) 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 1880s–1940s Federation/Victorian/inter-war heritage predominant (Heritage Conservation Areas cover virtually entire LGA) + premium contemporary infill 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 Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage ground, generic project-home elevations that ignore the street rhythm. Buildana has built across Hunters Hill Council long enough to know where the line sits.

Building Activity in Henley Right Now

Henley 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 Hunters Hill 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 Henley

Rental yield analysis for Henley: attached duplexes typically rent about 95% of what a detached would — the cost saving on construction (roughly $200K–$300K less than detached) usually outweighs the rental difference. For investors, attached is almost always the better play unless the land premium supports detached.

Council contributions in Hunters Hill Council can run $10K–$60K for a duplex depending on dwelling size and site. These aren't always obvious up front. Buildana flags the contribution estimate during feasibility so your project budget isn't short on line 47 of the DA conditions.

Henley vs Nearby Suburbs

Henley vs nearby suburbs — key metrics for building a duplex.

Suburb	Median Price	Typical Lot	Soil Class	Min Duplex Lot	Station
Henley2111this suburb	$3.5M–$6.5M typical heritage; $5.0M–$15M+ harbour-front Woolwich/Hunters Hill peninsula	500–1,200m²	Class Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage	1,000m² under Hunters Hill DCP 2013 (highest in Sydney — heritage protection)	Wollstonecraft (5 km)
Hunters Hill2110	$3.5M–$6.5M typical heritage; $5.0M–$15M+ harbour-front Woolwich/Hunters Hill peninsula	500–1,200m² (premium Federation/Victorian/inter-war heritage predominant); 800–2,000m²+ harbour-front (Woolwich/Hunters Hill peninsula tip)	Class Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage	1,000m² under Hunters Hill DCP 2013 (highest in Sydney — heritage protection)	Wollstonecraft (5 km, ferry from Valentia Street wharf)
Woolwich2110	$5M–$15M+ (harbour-front)	700–2,000m²	Class Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage	1,000m² under Hunters Hill DCP 2013 (highest in Sydney — heritage protection)	Wollstonecraft (6 km, ferry from Woolwich wharf)
Boronia Park2111	$3.5M–$6.5M typical heritage; $5.0M–$15M+ harbour-front Woolwich/Hunters Hill peninsula	500–1,200m² (premium Federation/Victorian/inter-war heritage predominant); 800–2,000m²+ harbour-front (Woolwich/Hunters Hill peninsula tip)	Class Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage	1,000m² under Hunters Hill DCP 2013 (highest in Sydney — heritage protection)	Wollstonecraft (5 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 Henley duplex projects run from feasibility to subdivision under one builder. Fixed price, dual handover, full compliance.

Fixed-price duplex constructionNCC 2025 and BASIX compliantFull Hunters Hill Council complianceStrata or Torrens title subdivisionWeekly progress updates6-year structural warranty per dwelling

How It Works

From First Call to Final Key

Everything that has to be right before we touch the ground. We assess your Henley block — lot size (typical 500–1,200m²), width, R2 Low Density (heritage predominant) / R3 Medium Density limited to Gladesville town centre zoning, setbacks, FSR, landscaped area requirements under Hunters Hill Council's LEP and DCP. Minimum lot for duplex: 1,000m² under Hunters Hill DCP 2013 (highest in Sydney — heritage protection). 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 Henley site. You approve final plans before we move to lodgement.

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The Henley 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 Hawkesbury Sandstone bedrock predominant (saw-cutting, rock-anchoring $40K–$140K above standard substructure on harbour-fall lots) / Class M Wianamatta Shale on ridge / Foreshore Building Line + Crown Lands referral universal on Lane Cove River and Parramatta River frontage engineered footings, frame, lock-up, internal fit-out, and external works. Weekly progress reports.

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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 Hunters Hill Council clearance — important if you're planning to sell one side immediately to fund the next move.

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Our Team

Oliver Alameri

Founder / Director / Builder · MPropDev · PhD Student

Ahmad Alameri

Accounts Manager

Claire Wendell

Project Manager

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Headquartered in Western Sydney's Fairfield. Active across all 28 metropolitan Sydney LGAs — from Penrith to the Eastern Suburbs, the Hills to the Sutherland Shire.

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Last updated: 1 July 2025

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