Mount Pritchard 2170 · Liverpool and Fairfield
Builders in Mount Pritchard: Live in One Half, Sell the Other
Knock down one house. Build two. Keep one.
Mount Pritchard's 1960s to 80s homes sit on blocks of 550 to 750 square metres, and a lot of long-time owners are asking the same question: can we build a duplex, live in one side and sell the other to pay for it? Sometimes you can. Here's what it takes.
Short answer
Could I build a Mount Pritchard duplex, keep one home and sell its twin?
Often, yes. First confirm your council, since Mount Pritchard is split between Liverpool and Fairfield, and that the lot meets duplex size and frontage rules. Torrens title lets each half be sold separately; strata is the alternative. A mid-spec duplex costs about $2,130 to $2,570 per m², and a Liverpool DA typically takes 10 to 14 weeks.
Written and reviewed by Oliver Alameri
Licensed builder, NSW Contractor Licence 487805C · Founder, Buildana
Fact-checked
First: which council, and does the lot qualify?
Mount Pritchard straddles two councils, Liverpool and Fairfield. Different LEPs, different dual occupancy rules, different subdivision requirements. The planning certificate tells you which one applies.
Then the lot itself. Two dwellings need enough land and enough street width under whichever LEP applies, and the state code adds its own tests if you want a certifier's approval. Many Mount Pritchard blocks are big enough. Some fail on frontage, easements or the sewer main.
Soil here is typically Class H, so two slabs get engineered from the geotech. That's part of the budget from day one.
The duplex only pays for itself if you can sell the second half. That means subdivision, and subdivision has its own rules.
Torrens or strata: how the two halves get split
Building two dwellings is one approval. Splitting them into two separately saleable properties is another, a subdivision. For side-by-side duplexes, Torrens title is common: each owner gets their own lot and no strata scheme. Strata suits some layouts, with shared common property and a small scheme to manage.
Subdivision needs a subdivision certificate, a surveyor's plan, and a Section 73 compliance certificate from Sydney Water confirming each dwelling has its own water and sewer connections. Each half also needs its own power supply and meters.
Plan all of it from the start. Retrofitting separate services after the build is expensive and slow.
- Dual occupancy approval for the two dwellings
- Subdivision approval and a registered plan
- Sydney Water Section 73 compliance certificate
- Separate water, sewer, power and meter for each half
- Fire separation between the two dwellings to code
Could your Mount Pritchard block carry two homes?
Send me the address. I'll confirm the council, check the lot against the dual occupancy rules and give you a build cost for a duplex with subdivision included.
0476 300 300Live in one, sell or rent the other
Families take different paths. Some sell one side on completion to clear most of the build cost. Some keep both, living in one and renting the other. Some hand one to an adult child.
Each path has tax and finance consequences we're not the right people to advise on. Talk to your accountant and lender before you commit. What we can do is give you a fixed build cost and a realistic timeline, so their advice is based on real numbers.
Design wise, it helps to make both halves genuinely good homes. A buyer or tenant can tell when one side got the leftovers.
Cost and approval
Take Rawlinsons' Sydney rates, apply the 0.97 Liverpool-area factor, and a duplex at mid-range finish comes to about $2,130 to $2,570 per square metre. Demolition, asbestos removal, subdivision costs and separate service connections are priced as their own lines.
A code-compliant duplex can go through a certifier. Otherwise it's a DA, which in Liverpool typically takes 10 to 14 weeks. Mounties and the local shops are close by, and Liverpool station is a few kilometres away, which helps with both sale and rental demand.
Before committing to a duplex in Mount Pritchard
If any of these fail, the duplex plan needs rethinking.
- 01
Which council covers the lot, from the planning certificate
- 02
Lot area and frontage against that council's dual occupancy rules
- 03
Where the sewer runs, plus any easements on the title
- 04
Whether you want Torrens or strata subdivision
- 05
Advice from your accountant and lender on your chosen path
- 06
A fixed build cost including services and subdivision
Duplexes in Mount Pritchard
Is Mount Pritchard in Liverpool or Fairfield Council?
Parts of it sit under each. The 10.7 certificate for your lot names the one in charge.
Can I sell one half of my duplex?
Yes, once the property is subdivided. That needs subdivision approval, a registered plan and a Sydney Water Section 73 certificate, with separate services for each dwelling.
What's the difference between Torrens and strata for a duplex?
Torrens gives each owner their own lot with no strata scheme. Strata includes shared common property managed by a small owners corporation. Side-by-side duplexes are often Torrens titled.
Is building a duplex worth it financially?
It depends on land value, build cost, sale or rental prices and your tax position. We provide the build cost; your accountant and lender should confirm the rest.
Sources and references
Costs are from the Rawlinsons handbook with the local cost index applied; rules and timeframes are checked against the sources below.
- Liverpool City Council
- Rawlinsons Australian Construction Handbook, Rawlhouse Publishing
- Environmental Planning and Assessment Act 1979 (NSW)
- Asbestos, SafeWork NSW
- Strata Schemes Management Act 2015 (NSW)
- Plumbing, building and developing, Sydney Water
- NSW Planning Portal Spatial Viewer (zoning, FSR and hazard maps)
Two homes on your land. One plan that adds up.
A Mount Pritchard duplex, designed for subdivision from day one and priced so the numbers are clear.