Leffler Simes Architects (LSA) is well recognised as one of Australia’s leading architectural practices with offices in Sydney, Melbourne and Brisbane.
Established in the late 1960s, Leffler Simes was at the forefront of the dramatic expansion of the retail sector throughout Australia and designed a majority of the large shopping centres built at this time.
With a solid retail pedigree founded in the 1970s and 80s, Leffler Simes have maintained a role as a major retail practice since.
From the 1980s onwards, the practice evolved to encompass all sectors of the architectural sphere; retail, commercial, industrial, hospitality, education, medical, leisure and residential.
In response to an increased demand for our expertise, LSA established a Melbourne office in 2003 followed by a Brisbane office in 2010, with approximately 70 staff in total. Our success has been principally due to the quality of our people and their vast range of architectural creativity and ability. Add to that our large team of interior designers who actively assist all the sectors noted above.
The practice culture is energetic, multi-faceted and varied, thus enabling Leffler Simes to produce quality design solutions while providing a highly professional service to our clients. We are also environmentally conscious, commercially sound, and with strong social values aimed to benefit the communities in which we live and work.
It is our objective to continually evolve and develop as an architectural practice, always striving to create new and interesting solutions ensuring an architecture that embodies our client’s values and aspirations, as well as our own.

Leffler Simes Architects has extensive experience in many forms of Architectural Design and development, including

Creative Conceptual Architectural Design & Development
Innovative Interior Design Services
Inspired Development Application Designs & Documentation
3D Modelling, Visualisation & Flythrough animations
Site Master Planning
Detailed Landscape Design
Construction Certificate Documentation
Comprehensive, Accurate and detailed Construction Documentation
Building Code of Australia Evaluation
Contract Administration and Specification Services
Site Attendance during Construction
Marketing Plans & Tenancy Plans
Post Occupancy Evaluations
Retail Tenancy Design
Sun/Shadow Analysis & Documentation

Leffler Simes Architects is committed to staying at the forefront of international design excellence.We understand the importance of creative innovation and design ingenuity. As part of our commitment to creating distinct, user-friendly spaces, we continually look for opportunities to adapt and refine conventional design and the planning processes. Most importantly, we work hard to ensure that our projects define a clear and unique identity for our clients, whilst remaining mindful of budget and functionality constraints. With the active involvement of our clients, we have won numerous awards for our work, including multiple accolades from the Master Builders Association of Australia.

We take a very reasoned and creative approach to Sustainable Design, with this aspect being an important part of every commission. Our culture of professional education ensures that we are constantly renewing our awareness and knowledge of the impact that the buildings of today will have on future generations. We are a member of the Green Building Council of Australia and have many staff with an active interest in continual development of this area. To this end, we seek to minimise the environmental impact of our buildings by enhancing the efficiency of the built environment through materials, energy consumption, services efficiency and development space in every design.

Our reliability is just one of the many reasons our loyal Clients keep coming back, time and again. Reliability is an essential attribute of the Leffler Simes approach. Our hands-on management style and commitment to outstanding client service means that our clients have direct access to our Directors, Associate Directors and Project Architects for the entire duration of our commissions. From inception to completion, we provide a reliable service that is carefully customised to meet the unique requirements of our individual clients and their projects. “Leffler Simes have met every project deadline and milestone required of them in the course of our relationship including turn key projects where the desired project time, quality and budget were fixed.” Garry C. Zauner, Managing Director, Zauner Group of Companies

At all times throughout the Architectural process, Leffler Simes staff is completely approachable and will at all times act in the best interests of our Clients. It is this approachable nature that has enabled us to maintain long term relationships with not only our Clients, but a vast range of Consultants and Authorities. Our open door policy extends through all our offices and you will at all times feel welcome to discuss your requirements.

We pride ourselves in the thorough nature of our service, from the very first sketch plans to the finished product. At all times providing the most comprehensive, meticulous and exacting details expected from your Architectural practice. Our staff are well trained and have a wealth of knowledge to call upon, for each and every project. And, key staff will be allocated to a project according to the best fit principles.

Team Members