Welcome to LehmTonErde

Lehm – Ton – Erde. Loam - Clay – Earth. These three words has been significant for the work of Martin Rauch for over 30 years. For us these words have a symbolic character and describe the whole philosophy of our work. Loam stands for handcraft and technology, Clay for artistic design, Earth for the sustainability of earth construction.

The company is based on our wide experience and ongoing innovation. We are capable of designing, planning and realising projects of any size. In our projects we set our standards very high. The focus of our work is concentrated on the rammed earth building technique – proven over thousands of years with new perspectives and developments.

Bavarian State Award
for special high creative and technical performances in the craft trade sector


International Summer School
on modern earthen architecture and bamboo construction

When: 14.-28.07.2014
Where: AgrarBildungsZentrum Salzkammergut
, Altmünster, Austria
Deadline: Monday, 24.03.2014
Final selection: Monday, 31.03.2014


Marta and Martin Rauch in Zurich
Schweizer Baumuster-Centrale

When: Thursday, 04.07.2013, from 6 to 8 p.m.
Where: Schweizer Baumuster-Cenrale Zürich, Weberstraße 4, 8004 Zürich



Ricola Herb Center

Official groundbreaking ceremony
Laufen (Basel), 23rd January 2013

Have a look at the project!


Job Vacancy

Construction worker - Foreman



A Model of Advanced Clay Architecture
Roger Boltshauser, Martin Rauch


Lehm Ton Erde