BAS (UCT 1990), B. Arch (UCT 1995), Pr. Arch (SACAP) #7264, M. SAIA, M. CIfA #7348


Andy Horn is a qualified professional architect with over 24 years of experience with the design and construction of natural buildings. With a passion for the environment, he established his own architectural practice in 1998, called Eco Design – Architects & Consultants.

The practice has had a strong emphasis on the use of local natural materials, involving user participation and on-site training. Andy has often had to apply a personal hands-on approach to parts of the construction, involving physical building and training work. This continues to inform his art in the use of natural materials especially in straw bale, earth building and masonry dome construction. Clients have included: Namaqua National Parks, Mondi Forests, WESSA, Conservation International, International Fauna and Flora, Eskom, National Water Saving Campaign, South African Heritage Resource Agency, Hantam Municipality, City of Cape Town as well as numerous individual private clients, businesses and development planning teams.

Aside from practicing architecture, he has written numerous articles, published papers and photographs as well as illustrated books and pamphlets. He has also been a key note speaker and exhibited both locally and internationally. He also gives lectures on environmental design and holds natural building and participatory design workshops.


October 2012 Competent Person – Energy Usage in Buildings in accordance with SANS10400XA.
March 2005 Professional Accreditation, Registered as professional architect with the South African Council of the Architectural Professions and Institute of Architecture.
November 1998 Certificate in Eco Village Design, (Cape Town) by GEN the Global Eco Village Network.
Sept – Dec 1997 New Alliance Française Cultural Centre, as project architect for ACG architects and CRATerre-EAG consultants (Compressed Earth Brick Technology and boron treated pole roofing) in Mitchell’s Plain,Cape Town
April 1997
(Cape Peninsular Technicon), with CRATerre-EAG, International Institute for Earth Construction, University of France
August 1996
Permaculture Design Course, (Cape Town) by permaculture teacher- Jeremy Burnham.
June 1995
Bachelor of Architecture (University of Cape Town) graduation.
November 1990
Bachelor of Architectural Studies (University of Cape Town) graduation

In the video below Andy Horn gives a short 6 minute overview of his work as an Architect. He also talks about what initially inspired him to study Architecture and why it was so significant to choose the route of sustainable design.

This video was made in the context of the Daimler-Chrysler Award for South African Architecture 2007. Andy was one of the 8 architects nominated to receive the Daimler Chrysler Award for displaying exceptional talent in the field of architecture in South Africa.


Architectural Draftsman (Inscape Design 2012), C.AD (SACAP) #CAD-2132



Thijs is a qualified architectural draftsman with over 8 years of experience with the detailing and construction of natural buildings. Draw to the vision and the purpose of the practice, he joined Eco Design – Architects & Consultants in 2012 as an intern, and went on to take on a full time position.

Under Andy's direction, Thijs has learnt to work with natural materials and He is skilled with a broad range of industry leading software programs. and has jointly hosted participation and on-site training events.

Clients projects where he has been involved included:


Nieuwoudtville Award

Eco Design Architects was awarded the Holcim Award for Sustainable Construction 2005 & took silver in the Africa and Middle East Region for their designs for the Nieuwoudtville Caravan Site Upgrade

Click here for more info on the award.


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Eco Design is also specialized in dome construction. A couple of dome structures have been built. Click below to view images

Project 1

Project 2

We offer a number of construction & info manuals on our website on natural building technologies which specifically refer to the South African context. The info manual "A LIME DUNG PLASTER RECIPE" has recently been added to the collection.   Click here for more information.

All our manuals are also now available as E-Book downloads. Click here for the E-Books.