Context
Created in 1949 at the request of the Seine-et-Marne county council and converted into a local public-private company in January 2026, Habitat 77 houses more than 45,000 people — over 3% of the population — across 100 communes of the largest department in Île-de-France, organised into three regional agencies to stay close to its tenants. Its asset strategy has to hold five commitments at once: the safety of people and property, the regulatory obligations to carry out improvement and energy-saving works for tenants, the quality of service, the long-term value of the portfolio, and a maintenance budget that is both provisioned and respected. Holding all five across a portfolio that dispersed is what led Habitat 77 to set its strategy over the long term and to choose each year's works on objective criteria.
Our solution
- 01 Visualise Map the performance of the portfolio across component condition, risk and energy performance.
- 02 Project and simulate Project how building components evolve over time under investment, cost, energy-performance and condition constraints.
- 03 Validate Put objective works scenarios in front of the decision-making bodies, which deliberate on the year's programme.
- 04 Steer Steer the investment plan and keep component condition current in the asset base.
What Oxand delivered
A strategy over both horizons
The ability to set out a maintenance and investment strategy over the short and the long term, and to hold it as the portfolio evolves.
Objective works scenarios
Each year's works programme is built from objective scenarios, comparable against one another before anything is committed.
A technical asset base
A structured technical asset base for the portfolio: components, conditions, ageing laws and severity factors held in one place and kept current.
A trajectory for the governing bodies
A clear trajectory to present to the decision-making bodies, and the basis on which the maintenance budget is provisioned.
In their words
“Each territory used to defend its own priorities with no shared reference. Today works are arbitrated on objective criteria that everyone shares — and the budget is committed where the estate genuinely needs it.”
“The regulator expects social landlords to hold a real long-term estate strategy. Simeo let us answer that: a quantified trajectory, short and long term, built under our actual budget constraint.”
“The condition of an estate cannot depend on who is looking at it. Simeo gives us a common factual base: the projection is objective, and the trade-offs that follow are made on facts, not impressions.”
“Everything was in spreadsheets. In a few months, with the scope deliberately narrowed to the major components, Simeo gave us a workable strategy and the financial volumes to commit. The value came quickly, without waiting for a perfect reference.”
“Our estate is alive: we build, we demolish, we renovate. Simeo folds those movements into the overall trajectory — so that each year the investments hold the course we set ourselves.”
Questions about this reference
Why did Habitat 77 choose Oxand Simeo?
To hold five commitments at once across a portfolio spread over 100 communes: the safety of people and property, the regulatory obligations to carry out improvement and energy-saving works for tenants, the quality of service, the long-term value of the portfolio, and a maintenance budget that is both provisioned and respected.
What does Habitat 77 gain from Simeo?
The ability to set a maintenance and investment strategy over the short and long term, works scenarios that are objective and comparable, a structured technical asset base for the portfolio, and a clear trajectory to present to its decision-making bodies.
How does Habitat 77 use Simeo through the year?
Around budget preparation, in four steps: visualise asset performance, project and simulate how components evolve under investment constraints, have the decision-making bodies deliberate on the works to launch, then steer the plan and update component condition in the asset base.
What matters most when deploying this kind of tool?
Data reliability. Habitat 77 highlights bringing every department into the approach, agreeing why the tool is used, parameterising the estate breakdown, components, ageing laws, severity factors, quantities and conditions — and rating component condition correctly and completely, since that is what makes the maintenance output coherent.