Luxury Homes, Custom Dual Occupancy & Duplex Home Designs

Neo-Classical Dual Occ

A statement in contemporary elegance, this twin residence celebrates symmetry, light, and landscape integration. Each façade is defined by soaring arched windows, cascading greenery, and sculpted planters that soften the architectural precision...

Whitehaven - Duplex - Medowie

Whitehaven is a contemporary duplex that elevates the standard of duplex design in NSW, blending coastal calm with modern architectural clarity. Located in the growing community of Medowie in Port Stephens, this project showcases how thoughtful planning..

The Pearl - Duplex - San Souci

This residence showcases a refined approach to luxury duplex design, blending contemporary architecture with soft coastal influences to create a distinctive presence within Sydney’s evolving residential landscape.

Sunset Home - Luxury Home - Abbotsbury

A statement in contemporary luxury design, this bespoke residence redefines modern living with its sculptural form and refined material palette.

The Arches - Duplex - Ryde

This Mediterranean‑modern twist duplex blends timeless European elegance with contemporary Australian design sensibilities.

Seabreeze -Duplex - Gymea Bay

This duplex brings together two harmonious forms, creating a refined statement in modern residential living. Each dwelling is crafted with its own identity—balancing clean geometry, warm natural textures, and generous glazing...

Custom Dual Occupancy Homes & Duplex Designs by Profectus Design

At Profectus Design, we specialise in creating stunning dual occupancy homes and custom duplex designs tailored to needs of modern living. Whether you're developing for investment, family, or lifestyle, our Sydney-based team brings a wealth of architectural expertise and a strong focus on design and build solutions. Our unique approach combines smart planning, council-ready designs, and contemporary aesthetics, making your duplex home both functional and future-proof.

From home design duplex to full design & build services, we deliver solutions that maximise space, value, and liveability. As trusted home designers in Sydney, we offer innovative options for dual occupancy homes designs, duplex designs, and custom architecture home design across a range of block sizes and budgets.
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Let Profectus Design guide your next development with precision, creativity, and proven results.

Luxury Home Design Plans for Modern Living

We specialise in creating timeless, high-end luxury home design plans for discerning homeowners across Sydney and New South Wales. Whether you're dreaming of a bold architectural statement or a refined family retreat, our expert team delivers bespoke home design solutions that combine form, function, and flair.

We offer a full suite of services — from architecture home design to design & build partnerships — guiding you through every step of the journey. Our process is collaborative and council-savvy, making it easy for you to navigate everything from early feasibility studies to DA/CDC approvals and final construction documentation.

Looking to transform your existing property? Our knockdown rebuild service allows you to start fresh on the land you love, reimagining it with a brand-new custom-designed home tailored to your lifestyle and future needs.

Terrace Home Design That Maximises Space & Style

We specialise in contemporary terrace home design that turns tight blocks into high-performing, visually stunning homes. Whether you're developing multiple terraces or designing your dream inner-city residence, our team delivers thoughtful, high-impact solutions that make every square metre count.

From sleek, modern facades to efficient floorplans and natural light strategies, our designs are crafted to feel spacious, luxurious, and connected — even on compact sites. We understand how to work with planning controls, setbacks, and streetscape requirements to ensure your terrace home is not only beautiful but compliant and buildable.
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With a deep understanding of inner-city living and a flair for detail, we deliver home design solutions that balance privacy, functionality, and street appeal. Whether you want arched windows, face brick, parapet walls, or a modern façade twist — we design with intent, not imitation.

Alterations & Additions Tailored to Your Home

Clever, creative alterations and additions that breathe new life into existing homes — whether it’s a growing family, a changing lifestyle, or a long-overdue upgrade driving the change.

From small-scale extensions to major structural redesigns, we deliver custom home design solutions that work with what you have and elevate it to what you need. Every project is carefully tailored to enhance flow, light, storage, and functionality — all while respecting your budget and timeline.

We listen to what you love (and what you don’t) about your current home — then reimagine it with thoughtful, site-specific design that brings out the best in your property. Whether it's opening up a kitchen, adding bedrooms or bathrooms, or creating a flowing indoor-outdoor connection, we’re here to guide you from concept to council approval and beyond.

Sydney’s Leading Dual Occupancy Designer for Custom & Luxury Duplex Homes

Profectus Design is the trusted name in Sydney for discerning clients seeking refined, high-end living through luxury duplex designs and custom dual occupancy homes. With over a decade of design excellence, our studio is led by Stephen Petratos and brings together form, function and prestige in every project. Whether you envision a statement duplex residence or a bespoke multi-dwelling development, we deliver architectural outcomes that reflect sophistication, style and lasting value.

Partner with a dual occupancy designer who understands the nuances of luxury. Our tailored design process ensures every element is purpose-built for comfort, elegance and market appeal. Reach out to us today to book a private design consultation and explore how we can bring your custom duplex designs to life with absolute finesse.