This private mansion was built for Joseph-Barnabé Porchon in 1751 on a plot of the Clagny pond which dried up in 1737.

[1] Coming from the East of France, the Lambinet family cut clothes and traded in sheets in Versailles.

He occupied it in 1859, with his son and with the latter's wife, Nathalie Chevassus, using one of the wings of the hotel as an apartment building.

In 1929, without an heir after the death of her father-in-law Victor, her husband and her son Pierre (in November 1911), Nathalie Lambinet bequeathed the building with her collections to Messrs. Dagincourt and Dénériaz; it is up to them to transform it into a museum.

The catalogue lists 542 works, plus 8 deposited at the municipal library and 2 at the hôtel de ville.