de.arch p/l (pronounced 'de arc') is an Melbourne based architectural practice established in 2012. Our aim with each project is to provide functional design solutions that have an elegant simplicity, are timeless and unique.

Our belief is that every project is an opportunity to explore new and better ways of living through design. We love creating spaces that not only meet our clients’ needs but exceed their expectations. We enjoy working collaboratively with our clients and sharing the design process as we believe this achieves the most successful outcome. 

 Most importantly, we love what we do! To be able to change and improve the way a person lives or works in a space is very rewarding. We’re just as excited to see a project progress as you are, to see it take form, to experiment with new materials or details, to increase the amount of natural light, or how a space can now flow from one to another.


Peita De Trizio

Peita de Trizio

Director | Architect

ARBV number: 18242

Bachelor of Architecture | Deakin University 2007

Co-director & founder of de.arch p/l, Peita established the practice in 2012 after gaining experience in various acclaimed boutique design practices in Melbourne.

As a registered architect with over 10 years’ experience, Peita’s expertise extend from residential architecture through to large scale multi-residential projects. Her experience also includes office and commercial fitout projects in addition to health and educational facilities.

Peita’s architectural interests gravitate toward projects which allow for architecture to improve the way people live, work or relax in a space. With the client always top of mind, she looks toward projects that positively contribute to the local context by always striving to lead by example with considered and responsible design that benefits both client and the environment.

Her hands-on approach to each and every project is evident through the strong working relationships she has built with her clients, consultants and contractors alike. Peita appreciates that each person involved is crucial to the process and to the successful realisation of the built project.

Jessica Pile

Jessica Pile (Irwin)

Director | Architect

ARBV number: 17632

Bachelor of Architecture | RMIT University 2007

Co-director of de.arch p/l, Jessica is a registered Architect with over 10 years’ experience. Prior to joining de.arch, Jessica worked in a local boutique design studio and a large and highly respected international practice. She was also principal in her own practice ‘Jessica Irwin Architect’.

Her expertise as a result is diverse and covers a wide range of design disciplines from one off bespoke residential to multi-residential and mixed use projects, commercial and retail developments, through to community, educational and recreational facilities.

She particularly enjoys the challenge of an unusual, quirky and constrained brief or site where detailed study of the people and context or taking cues from objects and existing details can unlock a projects hidden potential.

Jessica has a proven track record of successfully managing projects of various scales from inception through to completion whilst being design focused and pragmatic. She considers every design challenge faced an opportunity rather than a constraint, giving each project its own character and individuality.

Credits: Susan Gordon Brown Photographer