Kenthurst Duplex Builder — Western Sydney Dual Occupancy
Buildana is a local The Hills duplex builder. We know which Kenthurst streets support Torrens title subdivision, which suit strata, and what The Hills Shire Council will approve. Free site feasibility.
HIA Member
MBA NSW0476 300 300Quick Answer
A duplex in Kenthurst costs $750,000–$1,500,000+ for dual occupancy construction. Attached duplex from $750K, detached from $1M. Buildana manages feasibility, The Hills Shire Council approvals, construction and subdivision under one fixed-price contract.
Kenthurst Duplex Construction
A duplex in Kenthurst is not the right product, because this is an acreage rural-residential suburb zoned RU2, not a dual-occupancy market. The holdings run 1 to 10-plus hectares of equestrian and lifestyle land, and under RU2 the honest option is a single dwelling plus a permissible secondary dwelling, not a Torrens-title duplex. I would rather be straight about that than pretend the zoning allows it.
On an acreage the build is a whole-of-site exercise: siting, a bushfire assessment given the significant bushfire-prone overlays, an on-site wastewater system, and rock where the Hawkesbury Sandstone demands it. A duplex splitting the block does not fit the rural zoning, so for dual-occupancy yield neighbouring residential suburbs make far more sense, and I will point you to them.
What I would check first in Kenthurst: the RU2 zoning and what it permits, the bushfire and wastewater constraints, and the better dual-occ options nearby. That is the honest starting point.
We build these fixed-price, licence HBL 487805C. Tell me what you are after and I will point you to where a duplex actually works.
Buildana manages the full duplex development process in Kenthurst — 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 Kenthurst from $750K
- The Hills Shire Council DA and CDC approvals managed
- R2 and R3 zones — established dual occ. provisions
- Minimum lot size 600m² (R2) / 700m² preferred under Hills DCP in Kenthurst
- M — engineered dual-slab design included
- Strata or Torrens title subdivision available
- 6-year structural warranty per dwelling
- Free feasibility check — near No rail (rural) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
RU2 acreage, not a duplex market
This acreage suburb runs 1 to 10-plus hectare equestrian and lifestyle holdings zoned RU2.
The honest option is a single dwelling plus a permissible secondary dwelling, not a Torrens-title duplex.
Whole-of-site build
The build is siting, a bushfire assessment given the significant overlays, an on-site wastewater system, and rock where the sandstone demands it.
A duplex splitting the block does not fit the rural zoning, so for yield I will point you to residential suburbs.
Duplex builder in Kenthurst — key facts
- Suburb
- Kenthurst, NSW 2156
- Council / LGA
- The Hills Shire Council (The Hills)
- Primary zoning
- R2 Low
- Typical lot size
- 1–10ha (acreage)
- Soil class
- M
- Median house price
- $3M–$8M+ (acreage)
- Home era
- Mixed rural
- 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
Want a real number for YOUR block — not a generic estimate?
Free site assessment, fixed-price contract, line-itemised quote within 48 hours. No high-pressure sales — just a real builder talking real numbers.
How It Works
From First Call to Final Key
Quick desktop check first — lot size, zoning, frontage — then full site visit if it stacks. Drainage path, neighbour overlooking, slope, services, easements. 600m² (R2) / 700m² preferred under Hills DCP minimum is just the entry ticket; the real feasibility is whether two compliant dwellings actually fit and sell.
⏱Our architect designs both dwellings to maximise your Kenthurst block's yield — floor plans, elevations, 3D renders, and landscape concept. We optimise for rental return and sale value under The Hills Shire Council's DCP.
⏱Most Kenthurst duplexes go DA route through The Hills Shire Council — CDC pathways for dual occupancy are restrictive on most R2 blocks. We pre-meet with council planners on borderline sites to confirm support before lodgement, which avoids a 3-month round trip on RFIs.
⏱Both dwellings built simultaneously — engineered slabs (Class M soil), frame, lock-up, fit-out. Milestone updates from your project manager.
⏱Final inspections, dual OCs issued, subdivision registered with LRS. Each dwelling gets its own title, services, and 6-year structural warranty. Ready to rent, sell, or occupy.
⏱Quality Promise
We build duplexes in Kenthurst end-to-end — feasibility, design, DA/CDC, dual-slab construction, subdivision. One contract.
Cost Guide
| Item | Estimated Range |
|---|---|
| Attached duplex (side-by-side) | $830,000 – $1,210,000 |
| Attached duplex (stepped/offset) | $990,000 – $1,380,000 |
| Detached duplex (two fully separate dwellings) | $1,320,000 – $1,760,000 |
| Luxury detached duplex | $1,760,000+ |
| Party-wall acoustic & fire upgrade | Included |
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
Estimate Your Build Cost
Use our free calculator to get an instant cost estimate for your project
Still got questions? Talk to Oliver directly.
30-min free call — bring your block, your brief, your budget. We'll map out feasibility, timeline, and realistic cost. No sales pitch.
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
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.
Start a Kenthurst Duplex Project
Free duplex feasibility assessment for Kenthurst 2156. We'll check your block, estimate yield, and provide a fixed-price budget.
Start Your ProjectMore in Kenthurst
Other Buildana services in Kenthurst
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Kenthurst 2156. The Hills Shire Council regulations and local controls are covered on each page.