OPAH-RU of the city center of Boulogne-sur-Mer which includes several components:

- urban component, city center action project,

- land component,

- real estate component,

- fight against undignified and very degraded housing,

- co-ownership component in difficulty,

- energy and fuel poverty aspect,

- work component for the autonomy of the person in the habitat,

- social aspect,

- heritage and environmental aspect,

- economic aspect and territorial development.

Single-award framework agreement with purchase orders without minimum or maximum.