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Modern Australian dual occupancy home and side-by-side duplex displayed on neighboring suburban blocks to illustrate the key differences in residential property layouts.

Dual Occupancy vs Duplex: Key Differences

A dual occupancy is a planning classification that allows two dwellings on one lot, while a

Modern duplex development site in suburban NSW with architectural plans, surveying equipment, and a prepared residential block illustrating the council approval process before construction begins.

Council Approval Process for Duplexes in NSW

Building a duplex in NSW requires either a Complying Development Certificate (CDC) or a Development Application

Aerial view of a Sydney duplex project showing multiple construction stages from site preparation and framing through roofing, exterior finishes, landscaping, and completed modern duplex homes ready for occupancy.

How Long Does It Take to Build a Duplex in Sydney

Building a duplex in Sydney typically takes 12 to 18 months from concept to keys, roughly

Two modern duplex developments in suburban Sydney illustrating separate and shared property layouts to represent Torrens Title and Strata Title ownership options without text.

Torrens vs Strata Title for Duplexes

Torrens title gives each duplex owner full freehold ownership of their land and building, while strata

Modern duplex designed for a narrow residential block in Sydney featuring space-efficient architecture, large windows, private landscaping, and a contemporary Australian streetscape.

Duplex Design Ideas for Narrow Blocks Sydney

A narrow block in Sydney doesn’t limit your duplex potential; it sharpens it. With site widths

Suburban homes in contrast

Knockdown Rebuild vs Duplex: Which is Better

A knockdown rebuild suits homeowners wanting one premium custom home on their block, while a duplex

Aerial comparison of a suburban property featuring an attached granny flat connected to the main house and a detached granny flat located separately in the backyard, highlighting the differences in layout, privacy, and design.

Do You Need Council Approval for a Granny Flat in Sydney

Yes, every granny flat in Sydney needs approval, but most do not require a full council

Aerial view of an Australian suburban property with a detached granny flat positioned behind the main residence, showing a compliant site layout, private access, landscaping, and efficient residential land use.

Granny Flat Approval: CDC vs DA

In Sydney, NSW, a granny flat can be approved through either a Complying Development Certificate (CDC)

Aerial view of a newly completed Sydney duplex development featuring two attached modern residences with separate entrances, garages, private outdoor spaces, and contemporary architecture on a suburban residential block

Duplex Construction Cost in Sydney

Building a duplex in Sydney typically costs between $1.4 million and $2.8 million for a turnkey

Aerial view of a suburban property comparing a detached granny flat, compact tiny house, and modern cabin side by side, highlighting differences in size, design, and residential use.

Detached Granny Flat vs Tiny House vs Cabin

A detached granny flat is the most permanent, council-approved, and value-adding option for Sydney homeowners. Tiny

Aerial view of a suburban property comparing an attached granny flat connected to the main house and a detached granny flat located separately in the backyard, highlighting different residential layouts and building styles.

Attached vs Detached Granny Flat: Pros and Cons

Choosing between an attached and detached granny flat comes down to four key factors: site space,

Aerial view of an Australian suburban property featuring a detached granny flat behind a primary residence, showing realistic lot layout, private access, landscaped surroundings, and efficient use of residential land.

Detached Granny Flat Size Limits & Regulations (NSW/VIC/QLD)

A detached granny flat is capped at a maximum internal floor area of 60m² in NSW,