Our expertise and creative team thinking will help you realise your vision.


In 2006, Steve Warner established OUTHOUSE design as a fresh, customer-focused landscape design and horticulture consultancy. The focus for Steve and the team is you, the client – this is your outdoor space or garden, and our role is to listen to your needs and inspire you with our ideas.

Since then, we have delivered a broad range of projects from innovative, award-winning residential gardens to extensive master planning of community spaces. The key strength of our team is our drive to create sustainable places for people to live, work and enjoy. We love what we do, and really enjoy sharing the creative process with our clients, to come up with a design we are both proud of.

We are passionate about creating the ‘outdoor living experience’ and we are grateful for the trust our clients have in us. We appreciate that the planning involved in creating a garden is becoming more intense, but seeing the end result – months or years later – makes it all worthwhile. The partnership is our passion, and our clients keep us inspired.

STEVE WARNERPrincipal Designer
Diploma of Landscape Design and Horticulture
Recipient of the Allan Correy Award for Design Excellence
2017, 2016 & 2022
Fellow of the Australian Institute of Landscape Designers
and Managers
Past President of LDI

“Consider what’s possible.”

Throughout Steve’s career in both local government and in OUTHOUSE Design, Steve has been responsible for the direction and management of many projects working with Architects,  Engineers, Playground Designers and Landscape Construction companies. This exposure has provided insight into the vast number of factors which ensure a successful project including, supplier selection, community consultation, budget planning, materials selection and contingency planning.

Steve’s experience focuses on the design, documentation and construction supervision of an extensive range of Open Space projects. These projects include All Access playspace design, local and regional park design, environmental rehabilitation, landscape maintenance consolidation, and therapeutic and educational design.

KATRINE MARDINISenior Landscape Architect
Bachelor of Landscape Architecture, University of NSW
Approved WWCC
Play Australia Member

“Play spaces don’t have to be boring – they should entice and feed the imagination of the child within.”

Katrine joined OUTHOUSE design in 2011 and has worked on a broad range of landscape design projects from commercial, educational and therapeutic playgrounds.

With a strong passion for unique, natural and sensory gardens, Katrine has developed a special focus in the design and implementation of inclusive playspaces for all ages and all settings such as childcare centres, schools, shopping centres, community spaces and parks.

Katrine is a talented designer with a strong eye for detail. Her approachable manner and excellent ability to communicate design solutions via clear and easy to read plans is the very reason why her designs have been nationally recognised. Katrine is a champion of the great work that Kidsafe undertake, recently completing the Kidsafe Playground Safety and Inspection Workshop and maintaining an ongoing understanding of current Playground Safety Standards.

KAREN LAUSenior Landscape Architect
Bachelor of Landscape Architecture (Hons), University of NSW 2018
Therapeutic Horticulture Australia Member

“Just like people, every space has its own unique character and language”

Karen believes that landscape architects as designers of outdoor spaces can contribute to promoting better health and wellbeing in our communities through connecting people with each other and to their environment.

With her experience in a diverse range of projects including public open space, playgrounds, schools, health care facilities and residential communities, Karen is well acquainted with project deliveries as well as client and consultant liaison from design through to construction stage.

Karen’s passion and knowledge in the area of Wellness and Therapeutic Horticulture, in addition to her experience working alongside Stakeholders and Specialists in the Commercial, Health and Wellbeing Sector have enabled her to transform neglected and unused spaces into enjoyable and healing places that brings joy, respite and harmony among all users.

CALLUM RHODESLandscape Designer
Diploma of Landscape Design
Certificate III in Horticulture
Member of the Landscape Design Institute

Callum is a Landscape Designer with design qualifications from the highly regarded Ryde TAFE School of Horticulture as well as a Certificate III in Horticulture and several years’ background experience in urban garden maintenance and landscaping. His interests lie in creating sustainable urban landscapes and horticultural excellence, and encouraging and educating clients to achieve the same.

Callum has travelled extensively in Europe and the Americas and is passionate about conservation. He also has a Bachelor of Communications from UTS and experience in journalism and writing.

REMY GRAFLandscape Architect
Bachelor of Landscape Architecture (Honours),
University of Technology Sydney 2023

Remy graduated from the University of Technology with a degree in Landscape Architecture (Honors) in 2023, she is passionate about sustainable design, protecting threatened ecological groups, inclusivity in design and the importance of creating a balance between built forms and landscapes.

She understands the importance of creating landscapes within cities, acknowledging the wide range of benefits this can have on not only human life, but for animal species. She is passionate about the preservation of plant species and ecological communities which are threatened and hopes to acknowledge these issues throughout her career. Remy is inspired by landscape architecture across the globe, which she has experienced from both personal travel and university field trips to Asia and Europe.