Since 2003, Atelier Lithos , led by Olivier Fawer , has specialized in stone cutting and the assessment of historic buildings . The studio works with all types of natural stone : limestone, molasse, marble, granite, gneiss, sandstone , and other traditional materials. We provide detailed expert assessments for structures such as castles, churches, historic monuments, old stone houses, and public buildings . These services allow you to: • obtain a clear cost estimate for restoration works (particularly useful before purchasing a property), • receive a precise technical report (stone types, condition, damage analysis, necessary interventions) that serves as a reliable basis for tendering to specialized contractors . Regularly commissioned by cantonal heritage and historic site authorities , Atelier Lithos – Olivier Fawer is a trusted reference for the restoration, preservation, and enhancement of stone-built heritage in French-speaking Switzerland.