The wall first, the safe second
The first question is the substrate. A stone cross-wall in a building in the 5th, a light partition put up when a flat on the Pentes was divided, and a concrete panel in an 8th arrondissement block do not drill the same way and will not carry the same load. The structural element is identified before any model is discussed, and buried electrical runs are traced before drilling.
In the converted workshops of the 4th, the ceiling height tempts people into building storage high up. That is a poor idea for a safe: the load should sit low, on a load-bearing wall or on the slab, and stay reachable without a step ladder if it is going to be used at all.
A built-in safe sinks into the wall itself — the thick old cross-walls of the Presqu'île often allow it: nothing is attacked that is never found, provided the recess is cut cleanly. A free-standing safe allows larger volumes and follows you when you move, but it stays visible in the room. Either way, keep it out of damp rooms and away from windows onto the courtyard.
What the insurer looks at, what the staircase imposes
Read the insurance policy before the catalogue. It caps what is covered for valuables kept at home, and it usually ties that cap to a minimum resistance level and to anchoring done the way the manufacturer specifies. So it is the policy that names the safe, never the reverse. Ask for the required level in writing: in a flat in the Brotteaux insured for family jewellery, one grade either way changes the shortlist.
A safe that is merely set down leaves with two people, by the same staircase it came up, and its contents are opened somewhere else at leisure. So the anchoring matters more than the weight printed on the datasheet, and the fixings follow the real material — the stone of a Vieux Lyon cross-wall does not anchor like the concrete panel of a tower block on the Duchère.
Access finally shapes the choice of model. A winding staircase on the Pentes, a galleried courtyard in Vieux Lyon with no hoist, nowhere to stop a van on the rue des Tables Claudiennes: all of it limits the volume and mass that can realistically be brought up. Measure the narrowest point, landings included, before ordering. And a safe door swings wide, so leave the clearance in front of it too.
How does this service work?
Techniques, typical situations, standards and things to watch out for: it is all on our safes page. This page focuses on what the service involves in Lyon.