Expertise

Works in occupied premises: refurbishing without stopping business.

Teams keep working while the works progress. Phasing, buffer zones and communication determine success as much as the quality of the works.

Key issue
Continuity of essential functions, safety, disruption
Tools
Phasing, buffer zones, fallback premises, scheduled working hours for the works
Stakeholders
Senior management, managers, facilities, IT, works council (CSE), contractors
Deliverables
Phasing plan, schedule of moves, site rules
Office corridor lined with full-height built-in storage, oak parquet floor (CGE offices). Project: CGE offices

Phasing: dividing up the floor and the time

We divide the site into successive works zones, with buffer zones and, if necessary, temporary fallback premises (“swing space”). Each phase specifies who moves where, when, with what IT equipment, and what remains accessible: toilets, emergency exits, critical rooms, reception.

Noise, dust, safety

Noisy works are scheduled outside working hours or in time slots announced in advance. Works zones are physically separated, and walkways and emergency exits are kept open. The contractors' schedule incorporates these constraints from the tender stage: they come at a price.

Informing teams, consulting the works council

In companies with at least 50 employees, a project that significantly alters working conditions requires the works council (CSE) to be consulted (French Labour Code, art. L2312-8). Beyond the legal obligation, teams need to know in advance what changes for them each week. Change management.

Frequently asked questions

Do works in occupied premises cost more?

Often, yes: multiple phases, works outside normal hours, protection, internal moves. The extra cost is estimated from the contractor tender stage and compared with the cost of a full temporary relocation.

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