Context
The city of Saint-Denis manages a large and varied building estate: 118 buildings across 80 sites — schools, sports facilities, administrative and social-care premises. Its knowledge of that estate was good, but it was not written down: it rested on the people who held it. The city set out to consolidate it, harden it and secure it, so that its heavy-maintenance and renewal decisions could rest on something other than the teams' memory.
Our solution
- 01 Collect and structure The estate data collected and structured, out of spreadsheets and out of individual memory.
- 02 Map and digitalise The estate mapped and the building logbooks digitalised in Oxand Simeo™.
- 03 Compare the strategies Maintenance strategies built as scenarios and compared inside multi-year investment plans ordered by risk.
- 04 Justify the priorities Investment needs identified and the order of works justified.
What Oxand delivered
A central, living database
One database holding every piece of building-estate data, and still taking it on as the estate changes.
Indicators that carry a decision
Indicators that make investment needs easier to communicate and to arbitrate.
Renewal plans put on evidence
The heavy-maintenance and renewal investment plans made objective rather than argued.
Questions about this reference
What estate does the city manage?
118 buildings across 80 sites — schools, sports facilities, administrative and social-care premises — more than 250,000 m² and some 1,500 technical assets digitalised in Oxand Simeo™.
Why formalise knowledge that was already good?
Because knowledge held in people's heads leaves with them, and does not compare from one building to the next. Written down, it becomes a base on which a trade-off can be defended.
What is a digitalised building logbook?
A building's history — its condition, its interventions, its surveys — held on the same reference as the rest of the estate rather than in a folder of its own.
What horizon does the plan cover?
Fifteen years of visibility on investment needs, with priorities ordered by risk rather than by age.