Artist's impressionWhere we build
Duplex builders in Parramatta
A knock down rebuild duplex in delivery on the Parramatta and Cumberland border, and a free written site assessment within two business days.
Parramatta
Building a duplex in Parramatta
Outside the State's mapped areas, a dual occupancy in Parramatta generally needs at least 600 square metres and 15 metres of frontage to a public road. Battle-axe lots and access handles need their own calculation, so we do not assume a handle counts towards the area until the survey and title have been checked.
The State's Low and Mid-Rise Housing Policy names Epping, Carlingford Court, Northmead Village, Westmead and Winston Hills Mall. On eligible land within 800 metres' walk of one of those, 450 square metres and 12 metres of width may satisfy the State's duplex DA standards. The walk is measured from the station entrance or the centre's mapped edge, so it covers streets near Winston Hills Mall rather than the whole of Winston Hills. We also check the LEP's maps for every address, because local maps and heritage controls change what is possible from one street to the next.
Our knock down rebuild duplex at South Wentworthville sits on the Cumberland side of the boundary, a few streets from Westmead, and it is the job we point to when Parramatta owners ask about services. The water main was on the far side of the road and the connection needed an underbore agreed with Sydney Water before the slab. Flooding is the other question we settle early, using the council's flood information for the lot.
Complying development needs 600 square metres and normally 15 metres at the building line, and excluded land such as heritage conservation areas rules it out. The council's average DA assessment time was 84 days in the NSW council league table for June 2026.
Suburbs we cover include Northmead, Winston Hills, Carlingford, North Rocks, Epping, Westmead, Toongabbie, Pendle Hill, Telopea, Dundas, Dundas Valley, Ermington, Rydalmere, Oatlands and Granville.
At a glance
- Where duplexes are permitted
- With consent in the R2 zone, as across NSW since July 2024, subject to the LEP maps for the address
- Council minimum lot
- 600 square metres and 15 metres of frontage to a public road
- Battle-axe lots
- The access handle needs its own calculation; we do not assume it counts
- Low and Mid-Rise Housing areas
- Within 800 metres' walk of Epping, Carlingford Court, Northmead Village, Westmead or Winston Hills Mall. On eligible land, 450 square metres and 12 metres may satisfy the State's duplex DA standards
- Complying development
- At least 600 square metres and normally 15 metres at the building line, or 12 metres where parking is reached only from a secondary road, parallel road or lane
- Two titles
- A separate approval from building the two homes. We check Torrens or strata for your address
- Council assessment time
- Average 84 days, NSW council league table, June 2026
The State rules
How the State rules sit beside the council's
The rules come in layers, and they are easy to mix up. The first question is whether a duplex is permitted at all. Since 1 July 2024 dual occupancies have been permitted with consent in the R2 zone across NSW, and a council's LEP can permit them in other zones. That settles the land use only. It does not mean a particular block is big enough, wide enough or free of constraints.
Outside the State's mapped areas, the council's own minimum lot size and frontage apply to a development application. Since February 2025 the State's Low and Mid-Rise Housing Policy has added a second test. On eligible land within 800 metres' walking distance of a nominated station entrance or the mapped edge of a nominated town centre, a council cannot refuse a duplex DA for lot size or width if the block is at least 450 square metres and 12 metres wide at the front building line, with a floor space ratio up to 0.65:1, a height up to 9.5 metres and one parking space per home. The rest of the controls and the merits of the design still apply, so it is not automatic approval. The walk is measured along a safe public route, so the policy never covers a whole suburb. It does not apply inside transport oriented development areas, or on excluded land such as bushfire prone land, specified high-risk flood land, heritage items, high aircraft-noise land, coastal wetland and vulnerability areas, and land within 200 metres of specified dangerous-goods pipelines.
Complying development is a separate test again. Under the Low-Rise Housing Diversity Code the lot must be at least 400 square metres or the council's own duplex minimum, whichever is greater, and normally 15 metres wide at the building line, or 12 metres where parking is reached only from a secondary road, parallel road or lane. A block can fail complying development and still suit a DA, or meet the State's DA standards without qualifying for complying development. Separate titles are a separate approval as well.
Custom homes too
Not every block wants a duplex
The same site assessment tells you whether a single custom home or a knock down rebuild is the better use of the block. We build both, and we would rather say so early than push a duplex onto a site that suits one good home.
Projects nearby
Work in Parramatta
Our South Wentworthville duplex, a few streets from Westmead, is in delivery. The Ryde home is the next closest project.
Artist's impressionSouth Wentworthville
A knock down rebuild duplex where the water main sits on the far side of the road, so the Sydney Water connection was planned and approved before the slab.
See the project →
Artist's impressionRyde
A custom home in Ryde, currently in delivery.
See the project →How it runs
How a project runs
Test the site
Planning, frontage, access, services and the likely approval path, checked before design is fixed.
Set the brief and budget
Agree what matters, where to spend and what the project needs to achieve.
Design and price together
Architecture, engineering, selections and trade pricing move together, so the price is known before the contract.
Build from a settled scope
One program and one site team, with a weekly update and variations priced and signed before the work.
Common questions about duplexes in Parramatta
How is the 600 square metres measured?
The council's rule is 600 square metres with 15 metres of frontage to a public road. On a battle-axe lot the access handle needs its own calculation, and we do not assume it counts. We check the survey and title before relying on the area.
Which Parramatta areas does the State's 450 square metre standard cover?
Eligible land within 800 metres' walk of Epping, Carlingford Court, Northmead Village, Westmead or Winston Hills Mall. It does not cover whole suburbs, it does not apply inside transport oriented development areas or on excluded land, and it is a DA standard rather than a complying development test.
Why does the answer change from street to street?
Because the LEP maps, heritage controls, flood information and the State policy's walking distance all apply lot by lot. The only safe answer comes from checking the address against the current maps, which is what the free site assessment does.
What about flooding?
Before any design work we check the council's flood information for your lot, because a flood planning level changes floor heights, the driveway and sometimes the layout.
Planning facts on this page were checked on 29 September 2026 against the Parramatta Local Environmental Plan 2023, Council's dual occupancy FAQ, the Housing SEPP, the Codes SEPP and the NSW Low and Mid-Rise Housing Policy. They are a guide, not a guarantee for any property. Controls change and exclusions apply, so we confirm them for your address as part of the free site assessment. This page is general information, not planning advice or an approval.
Tell us the address of your block in Parramatta.
Send the address and what you want to build. Within two business days you will have a written site assessment and a clear next step.