5 Hotham Street, Collingwood
Victoria 3066, Australia





DesignOffice work across a wide range of scales and sectors. In collaboration with our clients, we create buildings and spaces that are confident and personable. Offering traditional architectural & interior design services, we also extend our expertise through Platform: a new branded environments process, which is tailored towards strategy and commercial design needs.


  • Retail & Hospitality
  • Houses & Apartments
  • Residential Development
  • Commercial Development
  • Exhibition & Installation
  • Workplace & Studio
  • Cultural & Institutional

Architectural & Interior Design Services

Our team of architects and interior designers are experienced in a wide range of creative services.

Directed by Mark and Damien, the team at DesignOffice hold extensive experience in designing and delivering innovative buildings and interiors. This process is based on a procurement model structured by systemised architectural project stages. Our services range from initial briefing and feasibility through to site services.

DesignOffice is a registered architectural practice.


  • Briefing
  • Concept Design
  • Design Development
  • Construction Documentation
  • Site Services
  • Furniture Specification

A strategy-led design service, which facilitates the creation of branded architectural environments

Focused in the realm of the built environment, this unique service is tailored towards defining your brand’s customer, client and employee experiences. Through Platform, we utilise our strategic, design-led thinking to create signature environments through commercial interior and architectural design solutions. 

Please get in touch to find out how Platform can assist with your commercial brand needs.

Platform Services

  • Architectural Brand Strategy
  • Concept Ideation
  • Retail & Hospitality Design Signatures
  • Analysis of Market Competition
  • Bench-marking Studies
  • Tailored Design Briefs
  • Base-building Design Guidelines
  • Cultural Curation Strategy

Platform Case Studies

Platform Testimonials


Rebecca Burk

Former Head of Design for Coles

“I worked with Mark & Damien at DesignOffice on a number of projects. From strategic brand & experience positioning and store identity concept work through to detail design development. The team at DesignOffice were great to work with. Their clear understanding of retail commercial principles & customer experience was critical in our achievement of incredible thoughtful, “on-brief” ideas and solutions. The DesignOffice team are great communicators and carry a positive, proactive attitude that proposed innovative ideas, respected budget constraints & in-house processes and utilized creativity to solve problems that had our business and our strategy in mind”


Barb Robison

Brand Manager for Witchery

“A combination of good design knowledge, total commitment and a huge passion for the Witchery project, provided a wonderful professional and pleasurable relationship between DesignOffice and Witchery”


James Kirton & Shelley Simpson

Founding Directors of Mud Australia

“Over the last five years Mud Australia has worked closely with DesignOffice to implement our brand into four unique retail spaces (Sydney, Melbourne, London & New York) and our head office. DesignOffice’s Damien Mulvihill and Mark Simpson are a delight to work with and demonstrated great intuitive insight and integrity into the key elements of our brand. I believe DesignOffices key strengths are their ability to present architecture and design that matches and enhances the qualities of a brand, a keen understanding of retail space and flow, documentation and project management.”

Learn more about Platform

Fill in your contact details below and we’ll get back to you with more information about how Platform could add value to your business or brand.