Duplex Developments
At NB Custom Builds, we specialise in delivering high-quality Duplex Developments across the Mornington Peninsula. Whether you’re an investor wanting to maximise rental yield, a homeowner looking to build and sell, or a family wanting dual living options, we design and construct duplexes that offer exceptional value, modern style, and long-term financial benefits.
What Is a Duplex Development?
A duplex development involves building two separate dwellings on one block of land. These homes share a common wall but function as independent residences, each with its own layout, entrance, garage, and living spaces. Duplexes offer a powerful way to:
- Increase property value
- Generate income through rental
- Support multi-generational living
- Maximise a block’s space and zoning potential
NB Custom Builds specialises in modern, architecturally designed duplexes that appeal to homebuyers and investors seeking high-end, low-maintenance living.
Why Choose NB Custom Builds
- 15+ years of building expertise across the Mornington Peninsula
- Specialists in complex, high-value developments
- Full-service support including design, permits, and construction
- Premium craftsmanship with luxury finishes and modern inclusions
- Local knowledge of zoning, blocks, and council requirements
- Transparent communication and dedicated project management
- Focus on return on investment for developers and homeowners
NB Custom Builds is the Peninsula’s trusted partner for duplex projects delivered on time, on budget, and to the highest standard.
Our Duplex Development Process
NB Custom Builds offers a full range of KDR services, including:
Initial Consultation & Feasibility
We assess your block, zoning, site constraints, and development potential.
Custom Duplex Design
Our designers create layouts tailored to your land size, local regulations, and investment goals.
Planning & Permit Management
We handle building permits, planning approvals, and all council requirements for a stress-free process.
Construction & Project Management
Our experienced team ensures every stage meets strict quality standards, from foundations to final finishes.
Final Handover
A seamless handover with certificates, documentation, and a walkthrough — ensuring your duplex is ready for sale, rent, or occupation.
Areas We Service
NB Custom Builds delivers duplex developments across the Mornington Peninsula, including:
FAQ’s
Is my block suitable for a duplex?
Suitability depends on zoning, block size, frontage, and council regulations. We provide a full feasibility assessment.
How long does a duplex development take?
Most projects take 10–14 months, depending on design complexity and approvals.
Can I customise the design of both homes?
Yes. We offer fully custom duplex designs — you can tailor layouts, finishes, and façade styles.
Do duplex developments offer good ROI?
Yes. Duplexes are known for strong returns, especially in high-growth areas like the Mornington Peninsula.
Do you handle council approvals?
Absolutely. We manage all permits, drawings, documentation, and submissions.
Start Your Duplex Development Today
Book a consultation with NB Custom Builds and discover what’s possible on your block.