01
Retain
We keep elements that work and qualities that give a building its character. A measured approach avoids unnecessary demolition and purchases.
BAU LÜTZ
RENOVATIONS · BAU LÜTZ
Renovation starts by recognising the value of a building and helping it work better. We begin with the materials, spaces and qualities already there, before deciding what to add.
Less waste. More considered choices.

Two completed interventions in Meyrin and Genthod, with visual materials under privacy review.
Scope
Meyrin and Genthod - renovation of existing buildings - technical coordination and coordination of work - comfort, durability, and quality of details - visual documentation published only after permission and privacy checks.
WORK ON EXISTING BUILDINGS
Meyrin and Genthod describe two interventions in the Canton of Geneva. Their pages present the context and the status of the documentation.
START WITH YOUR BUILDING
An initial conversation to understand your needs, the potential of the existing building and the priorities for the work.
OUR STARTING POINT
A floor, a door, a beam or a stone can still have a great deal to offer. We assess what to retain, repair or reuse, and what needs replacing. Reuse comes before recycling; new materials are introduced where they are really needed.
01
We keep elements that work and qualities that give a building its character. A measured approach avoids unnecessary demolition and purchases.
02
We examine the condition of materials and options for cleaning, repair and reuse. Where reuse is unsuitable, we consider recycling options.
03
Light, comfort, spatial organisation and energy performance guide the work. Respect for an existing building goes hand in hand with today’s needs.
FROM SURVEY TO SITE
Survey, condition and needs: we understand the existing building and listen to the people who use it.
We identify elements to retain, recover or replace, together with the checks each decision requires.
We consider design, construction work, timing and budget together before committing to the details.
We organise the work and attend to the details, from reclaimed material to the finished result.
RESOURCES AND BUDGET
Reuse can reduce new purchases and waste, benefiting resources and the client’s budget. Each choice still needs checking: recovery, labour, transport and service life all matter. We compare options to invest where an improvement makes a real difference.