standard · 18m frontage
Twin Ridge 30
Standard 4-bed each side duplex — the workhorse layout for standard 18m+ Sydney blocks.
Beds/side
4
Baths/side
2
Cars/side
1
Duplex Designs
Western Sydney craftsmanship
DuplexDesigns&HomePlansinSydney
Duplex layouts engineered for Sydney blocks — from standard 18m frontage formats through to corner-block designs where each dwelling addresses a different street.
Tailored designClear approvalsPremium delivery
Why duplex development
Unlock more from a single block.
A duplex is one of the most efficient ways to unlock value on an eligible Sydney block — two independent dwellings on one site, typically Torrens-titled for independent sale, or strata-titled where Torrens isn't achievable. For owners with standard 18m+ frontage blocks, duplex development often delivers 60–90% more market value than a single detached home on the same site.
Kingstyle Homes designs and builds duplex projects across Western Sydney, from Kellyville, Castle Hill and Baulkham Hills through to Liverpool, Penrith and Blacktown. Every design is planned around the block, the council controls, the subdivision pathway and how the two dwellings will actually live for their owners or tenants.
Design collection
5 duplex designs by block type.
narrow lot · 15m frontage
Verge 26
Narrow-lot 3-bed duplex engineered for 15m frontages typical in Western Sydney infill blocks.
Beds/side
3
Baths/side
2
Cars/side
1
corner lot · Corner frontage
Corner Camden 32
Corner-block duplex with each dwelling addressing a different street — maximum privacy.
Beds/side
4
Baths/side
2
Cars/side
2
standard · 20m frontage
Boulevard 34
Premium 4-bed 3-bath duplex with double garage each side — for wider 20m+ blocks.
Beds/side
4
Baths/side
3
Cars/side
2
narrow lot · 14m frontage
Skyline Duo 28
Contemporary narrow-lot duplex with double-storey layout on 14m frontage.
Beds/side
3
Baths/side
2
Cars/side
1
Frequently asked
Sydney duplex questions.
What frontage do I need for a duplex in Sydney?
Standard duplex layouts need 18m+ frontage. Narrow-lot duplex designs work on 14–15m frontage blocks. Corner blocks unlock formats where each dwelling addresses a different street.
Can a duplex be Torrens titled in Sydney?
Yes on most standard blocks, subject to the local council's minimum lot size for subdivision. Where Torrens isn't possible, strata title is the fallback — both allow independent sale of each dwelling.
How much does a duplex cost to build in Sydney?
Typically $1.2M–$2.0M+ turnkey for a standard 4-bedroom duplex depending on finish level, block conditions and design complexity. Corner-block and premium duplex formats run higher.
How long does it take to build a duplex?
Approval and design: 4–8 months. Construction: 10–14 months. Total from initial briefing to handover typically 18–24 months for a standard duplex project.
Is a duplex a good investment in Western Sydney?
Duplex development can unlock significant value on eligible blocks — often 60–90% more market value than a single detached home on the same site. Rental yield and dual-income potential make duplexes a strong option for investment-focused owners.
Where we build
Duplex projects across Western Sydney.
Duplex builder in Kellyville2155 · The HillsDuplex builder in Castle Hill2154 · The HillsDuplex builder in Norwest2153 · The HillsDuplex builder in Bella Vista2153 · The HillsDuplex builder in Rouse Hill2155 · The HillsDuplex builder in Box Hill2765 · The HillsDuplex builder in The Ponds2769 · BlacktownDuplex builder in Stanhope Gardens2768 · BlacktownDuplex builder in Quakers Hill2763 · BlacktownDuplex builder in Schofields2762 · BlacktownDuplex builder in Marsden Park2765 · BlacktownDuplex builder in Riverstone2765 · Blacktown
Next step
Get a duplex feasibility on your block.
Send us the block address and rough goals. We'll come back with a duplex feasibility assessment — subdivision pathway, design fit, indicative pricing and approval timing.