Duplex and Townhouse Construction for Developers Who Need Certainty
Fixed-price contracts that protect your feasibility model from exchange to handover, and seventeen years of multi-dwelling builds across the Peninsula corridor — projects you can drive past and inspect today.
Duplex builds typically range from $650,000–$950,000, depending on size, site conditions and specification.Most builders price the build and leave the rest for you to discover — site costs that surface after exchange, programmes that slip past your finance deadline, and DA conditions that arrive as a surprise instead of a plan. A two-week delay or a $40,000 variation doesn't just cost money on a development site — it can break the feasibility model the whole project was built on. Stoneleaf prices the things that usually get hidden, locks the programme to your settlement date, and has carried 47 multi-dwelling sites through council without a feasibility-killing surprise.
Built around risk reduction, not features
Every line below answers the same question a developer actually asks: why is this builder less risky than the alternative?
Fixed-Price Certainty
Site costs, council contributions and connection fees are priced and locked before you sign — not estimated and revisited mid-build. The number in your contract is the number that protects your feasibility model.
Timeline You Can Bank On
Your completion date is set around your settlement and finance deadlines, not ours. We build a realistic programme up front and report against it weekly, so a slipping date is never news to you.
Multi-Dwelling Track Record
47 duplex and townhouse projects delivered across the Mornington Peninsula and South-East Melbourne corridor since 2008 — sites you can drive past, inspect, and ask the owners about directly.
Awards-Backed Quality
Recognised at the 2024 HIA Housing Awards for Best Multi-Unit Development (Regional Victoria) — independent recognition that protects your asset's resale value long after handover.
Duplex and townhouse builds across the Peninsula corridor
Every project below is a site you can visit. Ask us for the address and we'll arrange access or put you in touch with the owner.
Delivered 3 weeks ahead of programme on a sloped 650m² block
Zero contract variations across a 14-month, 3-lot build
DA approved in 11 weeks against a council average of 19
All 4 lots sold off the plan within 6 weeks of completion
Outcome figures reflect typical results across recent multi-dwelling sites and are provided as indicative examples for this concept page.
Five stages, one fixed price, no surprises
From the first feasibility conversation to the keys in your hand — here's exactly what happens, and when.
Feasibility Review
We assess your block, zoning and target yield before you commit — so you know whether the numbers work before you've spent a dollar on design.
Design & Approvals
We manage the DA and BA process end to end, coordinating with your architect or drawing on ours where it speeds up the path through council.
Fixed-Price Contract
Scope locked, price locked, completion date locked — every cost that usually surfaces mid-build is itemised and signed off before construction starts.
Construction & Reporting
Weekly site updates and milestone photography land in your inbox without you asking. You always know exactly where the build sits against the programme.
Handover & Defects
Practical completion is inspected jointly, the defects period is actively managed by us, and keys are handed over on the date that was in your contract.
Get the guide before you make an offer
- ✓How to read a zoning overlay before you make an offer on a site
- ✓Typical yield calculations for 2-lot and 3-lot duplex and townhouse sites
- ✓A realistic DA timeline for Peninsula and South-East Melbourne councils
- ✓Indicative build costs for duplexes and townhouses, broken down by size and spec
Download the Feasibility Guide
Takes 15 seconds. Sent straight to your inbox.
Builders talk about quality. Developers talk about certainty.
Let's run the numbers on your site
Bring us your address, your numbers and your timeline — we'll tell you straight whether it stacks up.
Book a Free Feasibility Call — 0400 000 000