The Rexroth Mannasmann Collective is an architectural studio based on the east bank of the Merri Creek on Wurundjeri land in Northcote. The Collective consists of three friends, Brenton, Giles and Kirsty and was established in 2003. It is usually known by the less cumbersome moniker of Rexroth.

Their work is predominantly residential but has also included institutional works, exhibition curation and imagined fragments of Australian and European cities. Numerous projects have received awards and have been published in Australia and internationally.

The Collective employs a collaborative approach which results in stylistically varied outcomes. The work can be contextual, rich and decorative, or quieter and more modest. The Collectives work can be rich and decorative (see the Paris Opera, Collingwood and Cates Kitchen), quieter, more modest (refer Myrtle St and Union St) or contextual (as per HBYC and Terip Terip).
Rexroth incorporates the clients’ voice and an awareness of urban and social histories to inform architectural responses.

The Rexroth Mannasmann Collective acknowledges the Traditional Owners of the land on which we work and build. In the spirit of reconciliation, we acknowledge the Traditional Custodians of country throughout Australia and their connections to land, sea and community. We pay our respect to their Elders past and present and extend that respect to all Aboriginal and Torres Strait Islander peoples today.


Brenton Weisert grew up in the outer eastern suburbs of Melbourne. Prior to forming Rexroth he worked in Architectural and Urban Design practices in Melbourne, Adelaide and Rotterdam. He is interested the relationship between building and landscape, and thinking through architecture at different scales – especially the details.

Kirsty Fletcher is a Darwin born, Melbourne-based architect and cardboard sculptor. Kirsty has 10+ years’ experience tutoring architectural design at the University of Melbourne and is past director of the Architeam co-operative.

Her work explores the innovative use of everyday materials, noisy decoration as a part of quiet texture and clever custom storage. Kirsty enjoys vacillating between collaborating to make permanent big things and the sole-authorship of ephemeral objects you can hold in your hand.

Giles Lawson is interested in history and economics and their influence on the practice of architecture. Materiality and techniques of assembly are among his favourite things.


Kirsty, Brenton and Giles bring the following strengths to projects:

  • The partners work directly on the projects, allowing direct communication with clients and consultants.
  • The practice is structured around collaboration and a process that aims to develop work through the benefit of multiple perspectives, experiences and disciplines.
  • We have no house style – each project is unique, and our clients’ voice is integral to our work.
  • We regularly work with the same builders and consultants.
  • The practice has worked on projects of a variety of different scales.
  • We look for opportunities to incorporate landscape into our projects.
  • We have 20+ years of tertiary teaching between us. We are practiced at explanation of ideas that generate and inform our designs.
  • We have hands-on construction experience, which contributes to the practicality and buildability of our designs.

who is Rexroth Mannasmann

The Rexroth Mannasmann Collective began as a group of 12 or so newly graduated architects and landscape architects in the year 2000. The group formed out of an interest in entering competitions and a search for an alternative to our day jobs.

Given the impracticality of a moniker that combined an assembly of surnames, we sought the anonymity of a fictitious architectural figurehead and polemicist conceived as part rock star and part Ern Malley character. The yellow pages furnished us with a name that had the big band sound for which we yearned, and the group coalesced into a company of four (now three), becoming the oxymoronic Rexroth Mannasmann Collective PL.

The larger Collective entered a plethora of competitions, with Europan urban design entries in Milton Keynes, Copenhagen, Kotka, Opatija and Bergen.

They have curated exhibitions and are responsible for The Suburban Detail competition series and The Golden Toilet Award.

awards and publications


2023    ‘Petal Power, Australian House & Garden, October issue

2023    Let the sun shine in: VCAT blocks shade’, Rachael Dexter, The Age, August 26th

2020    Mackay, Sharon and Snape, Diana. Living Outside. Melbourne: Thames & Hudson, 2020

2019    ‘Thinking Ahead, Green, issue 70

2016    ‘Kleines Schwarzes, Wohn! Design (Germany), March / April issue

2015    ‘A Matter of Truss, Domain, The Age, Nov 6 – 7

2015    ‘Profile, Architect Victoria, Summer issue

2014    ‘Everything Old… New Again, The Melbourne Magazine, The Homes Issue

2014    ‘Texture & light’, Sanctuary, issue 27

2013    ‘Light and shade, Monument, issue 115, p 94-95

2013    Harrison, Stuart. New Suburban. Melbourne: Thames & Hudson, 2013

2012    Tweedale, Anna, Momentum. An architectural ecology: Speculations on emergent practices. Melbourne: The Minegunyah Press

2012    ‘Present to the Past, Sanctuary, issue 21

2012    ‘Myrtle Street House, Houses, issue 89

2012    ‘Armoured Edwardian, Steel Profile, issue 113

2012    ‘After dark’, Vogue Living Before + After (special edition)

2012    ‘Create A Date: barstool’, Monument magazine, issue 111

2010    ‘Raising Respect for the Roof’,Green Magazine 20/9/2010

2010    ‘Modest makeover’, Sanctuary, issue 11

2009    ‘Preston Perimeter’, Architecture Australia, vol. 98, issue 4

2009    ‘Rembrandts: 9 Installations’, Architecture Australia, vol. 98, issue 2

2008    Kinetic Wet Function Pod’, Sweet Home Magazine (Korea)

2007    ‘Oxford Street’, Architecture Review, issue 101

2007    ‘Fun with Featurism’, Rachel Antony, The Age, January 17th

2007    ‘Peninsula Panache’, Houses, issue 58

2004    ‘Sun Trap’, Houses, issue 46




2015    Institute of Architects awards. Commendation in Residential Alterations and Additions category: Faraday Street Apartment.

2014    City of Yarra Sustainability awards: Jackson Street Alterations and Additions

2013    Institute of Architects awards. Shortlisted project in Interior category: Paris Opera, Collingwood

2011    Institute of Architects awards. Shortlisted project in Residential Alterations and Additions category: Paris Opera, Collingwood

2007    Institute of Architects awards. Shortlisted project in Interior category: The Lamington

2007    Europan 9. Shortlisted competition entry ‘Hedge Condition’ – Milton Keynes, England

2007    AA Prize for unbuilt work, honourable mention: Architectural Baroque

2005    Architeam Awards, Winner Small Category: Sherbrooke Gazebo

2005    Architeam Awards, Winner Cerebration Category: The Suburban Detail of the Month Competition