about de.arch

Our team are highly skilled in all forms of residential, commercial architecture and interior design.

We specialise in residential projects, including new builds, alterations & additions, specialist disability accommodation (SDA).

Led by architects Peita De Trizio and Jessica Pile – our goal is simple: to design homes that are practical, thoughtful and truly reflect the people who live in them – creating spaces that feel lasting and personal, whatever the budget or scale.

We work side by side with you, helping you navigate the tricky parts of design and construction. By keeping things open and collaborative, we aim to turn the process into one of the most enjoyable, rewarding, and truly life-changing experiences.

Design that fits life. Not the other way around.

Our practice values diversity and inclusivity, which is reflected in the thoughtful design and delivery of Specialist Disability Accommodation (SDA) homes tailored to meet high physical support needs across Melbourne.

pronounced 'de arc'

We have extensive experience in various types of commercial projects, such as workplace and retail fit-outs, refurbishments of lobby and common areas, end-of-trip facilities and more.

We take great pleasure in not only meeting but surpassing our clients’ expectations by working closely with them throughout the design journey, believing this approach yields the most successful outcomes. You can check out more of our in progress projects on Instagram!

There is no greater satisfaction than transforming how people live and work within their spaces.

Areas in Melbourne and Surrounds we have serviced include;

City of Boorondara; Ashburton, Balwyn North, Camberwell, Hawthorn, Hawthorn East.

City of Port Phillip; Albert Park, Balaclava, Elwood, Middle Park, Port Melbourne, St Kilda West, South Melbourne.

City of Bayside; Brighton East, Hampton, Highett.

City of Glen Eira; Caulfield North, Elsternwick, Murrumbeena.

City of Monash; Burwood, Glen Waverley, Hughesdale, Mount Waverley, Oakleigh, Oakleigh East.

Maribyrnong City; Footscray, Maidstone, Yarraville.

Moonee Valley; Aberfeldie, Ascot Vale, Essendon, Moonee Ponds.

Hobsons Bay; Newport, Williamstown.

Frankston City; Frankston South

City of Ballarat; Lake Wendouree

City of Greater Geelong; Barwon Heads

From new builds to extensive renovations and interior refurbishments, we excel at enhancing the functionality and value of every space. By taking the time to understand our clients’ lifestyles and requirements, we ensure each project is personalized and meaningful.

There is no greater satisfaction than transforming how people live and work within their spaces. We are driven by the process of seeing a project come to life—from its early concept to the final built form—knowing that it will positively impact its occupants for years to come.

Our Team

Peita De Trizio

DIRECTOR | ARCHITECT ·

Peita is the founding director and principal architect at de.arch, bringing a wealth of experience across residential, commercial fitouts, healthcare, and specialist disability accommodation (SDA) design. Her deep understanding of these areas, combined with a forward-thinking perspective, allows her to approach each project with both expertise and creativity. Passionate about the transformative power of architecture, Peita uses design as a tool to create positive change and enhance people’s lives. Dedicated to guiding clients through the entire building process, Peita prioritizes education and collaboration. Her work with consulting practices like 'My Architect' fosters a seamless connection between clients and architects, helping to navigate the complexities of design and construction. With her extensive knowledge of all aspects of residential architecture—from single homes to multi-residential projects—and expertise in commercial fitouts and healthcare design, Peita offers insight, expertise, and a unique perspective on every project she undertakes.

Jessica Pile

DIRECTOR | ARCHITECT ·

As the studio's co-director, Jessica brings extensive experience in architectural design and project delivery, spanning bespoke residential, low-rise multi-residential projects, large-scale commercial and retail developments, and community, educational, and recreational facilities. Her diverse background has given her a deep appreciation for the value architecture can bring to any project, regardless of scale. Jessica excels at transforming the practical requirements of a brief into spaces that not only meet but exceed expectations, going beyond the brief to create innovative, future-focused designs that elevate the built environment. Jessica is particularly passionate about creating inclusive and accessible architecture and interiors, seamlessly integrated into the building so they feel natural and unobtrusive. Her approach blends practicality with inspiring, meaningful design. In addition to her architectural practice, Jessica serves as an APE Examiner for the Architects Board of Victoria, where she assesses the competencies of aspiring architects in the region.

Jasper Leong

PROJECT ARCHITECT ·

Jasper is a passionate advocate for making exceptional design accessible to everyone. He takes particular joy in finding opportunities where functional spaces can also offer moments of relaxation and contemplation. With extensive experience in residential, multi-residential, and community projects, Jasper is a dedicated architect skilled in both documentation and project management. His enthusiasm for interior design drives his commitment to creating high-quality, timeless interior environments. Adept at selecting materials and finishes that are both purposeful and reflective of the space’s character, Jasper ensures a seamless design process that achieves the best possible outcomes for our clients.

Joshua Cousins

PROJECT ARCHITECT ·

Josh brings a unique blend of passion and precision to every project. His enthusiasm for architecture is driven by the belief that thoughtful, functional design can deeply impact both the physical and emotional aspects of everyday life. With a keen design eye and an unwavering attention to detail, Josh is a talented designer who consistently delivers compelling, harmonious spaces that are as practical as they are visually captivating. As a valued member of the design and project delivery team, he continues to showcase his ability to create designs that are both pragmatic and inspiring.

about de.arch

Our team are highly skilled in all forms of residential, commercial architecture and interior design.

We specialise in residential projects, including new builds, alterations & additions, specialist disability accommodation (SDA).

pronounced 'de arc'

We have extensive experience in various types of commercial projects, such as workplace and retail fit-outs, refurbishments of lobby and common areas, end-of-trip facilities and more.