---
title: "About Us | DuplexCost"
description: "Learn about DuplexCost, Australia's leading independent cost calculator and feasibility estimator for duplex and dual occupancy developments."
source: DuplexCost
sourceUrl: https://duplexcost.com/about/
lastUpdated: 2026-07-01
citationUrl: https://duplexcost.com/about/
---

# About DuplexCost

Learn about DuplexCost, Australia's leading independent cost calculator and feasibility estimator for duplex and dual occupancy developments.

DuplexCost is an independent construction cost and development feasibility platform designed specifically for Australian property investors, suburban homeowners, and boutique developers.

Building a duplex or dual occupancy is one of the most effective ways to manufacture equity and generate passive rental yield. However, the development path is fraught with hidden fees, council-specific regulatory constraints, and complex engineering costs.

Our mission is to bring transparency and analytical rigor to the residential dual occupancy sector in Australia. By providing a neutral, multi-city calculator, we help mum and dad investors assess block feasibility and calculate their true turnkey project cost before engaging a builder.

We are not a builder, surveyor, or town planner. We do not sell proprietary floor plans or project-home contracts. We are a completely independent digital tool designed to empower you with data. If you choose to seek quotes, we connect you with verified local builders in your area who specialize in duplexes, but our calculator metrics remain entirely objective and driven by current Q2 2026 market benchmarks.

© 2026 DuplexCost. A Hustle Ventures product.

## Our Mission

## Independent & Objective

#### Guides

#### Company

## Key Points

- Cost to Build a Duplex
- CDC Duplex Requirements
- Best Sydney Builders
- Best Melbourne Builders
- Calculator
- Locations
- How We Calculate
- Data Sources
- AI Information
- Our Team

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*Source: [DuplexCost](https://duplexcost.com/about/)*