Corner Blocks Can Work — If You Know What You’re Doing

Corner blocks can be both a blessing and a challenge when it comes to building a duplex. On paper, they offer fantastic potential — two street frontages, loads of natural light, and a unique design opportunity. But the reality is, not every corner block delivers the efficiency or yield most people expect.

The difference between a great result and a costly mistake often comes down to one thing: experience.

1. Understanding Setbacks and Site Restrictions

Every corner lot has a primary and secondary street frontage, each with its own setback requirements. This affects how far you can build towards each boundary — and it’s where many duplex designs start to fall apart. You’ll often lose some usable space on a corner block compared to a standard lot, which means smart design is critical if you want to maximise the footprint.

2. Designing for Access and Privacy

With two frontages comes flexibility — but also more decisions. Do you give each home its own driveway? How do you ensure privacy between the two dwellings? How do you keep the facade balanced from both streets?Getting this wrong can lead to awkward layouts and unnecessary costs. The key is designing with flow and functionality in mind, not just meeting council tick-boxes.

3. Navigating Services and Approvals

Corner sites can create extra work when it comes to connecting sewer, stormwater, and other services. Councils also tend to be stricter about corner visibility and street presentation, especially under a CDC. Having a builder who understands how to navigate these technicalities early on can save weeks of redesigns and thousands in variations.

4. Making the Design Work for You

When done properly, a duplex on a corner block can look incredible — each home with its own identity, strong street appeal, and functional layout. It’s the kind of build that stands out in any neighbourhood and often commands a premium when sold.

The trick? Work with a builder who knows how to make the most of every square metre and who’s handled corner block duplexes before.

If you’re sitting on a corner lot and wondering what’s really possible, check out our free Duplex Guide — it breaks down everything you need to know before getting started.