The autumn edition of the great municipal car boot sale in Les Ulis at the Urban Park
Les Ulis is an Essonne (91) commune born of the great Saclay plateau urbanisation wave of the 1960s–70s. Today, alongside the major Courtabœuf business park (tens of thousands of jobs), it is served by RER B (Les Ulis – Courtabœuf station), making it one of the most accessible communes in the southern Essonne.
The Urban Park (1 rue Morvan) is the commune's main green space. Each autumn — typically late September — it hosts the second annual Foire à Tout. The 2026 autumn edition takes place on Sunday 27 September. Private sellers only; residents pay €9/3m, non-residents €16/3m. Free visitor entry, 8am–6pm. Autumn colours in the mature park trees create a pleasant backdrop for bargain hunting.
Venue: Urban Park, 1 rue Morvan, Les Ulis (91940).
Date 2026: Sunday 27 September 2026.
Hours: 8am–6pm.
Entry: Free.
Sellers: Private individuals only. Residents: €9/3m — Non-residents: €16/3m. Via lesulis.fr.
Sunday 27 September 2026, 8am–6pm.
Urban Park, 1 rue Morvan, Les Ulis (91940).
RER B, Les Ulis – Courtabœuf station. By car, 1 rue Morvan.
Free for visitors.
Private individuals only. Residents: €9/3m — Non-residents: €16/3m. Registration via lesulis.fr.
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Parc Urbain Les Ulis
Parc Urbain, 1 rue Morvan, 91940 Les Ulis