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Building permits and projects in Cachan

274 building permits

A real permit, blanked out

Works on an existing building (extension without conversion) — public or community services (25 m²). Site area 12,088 m²

Where
Cachan
Month
2026-06
Trades
Excavation & demolition, Concrete & structural +4

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Source: SDES — Ministère de la Transition écologique, the official register. Newest entry: 2026-09-30.

Busiest trades here: Concrete & structural (274) → France · Electrical (274) → France · Aluminium & glazing (274) → France · HVAC & ventilation (274) → France

Nearby localities: Arcueil · L'Haÿ-les-Roses · Bourg-la-Reine · Bagneux · Gentilly · Montrouge

Most recent cases

What is being built Decision Date Reference
New construction — 2 dwellings, 200 m² of housing floor area. Site area 383 m² GRANTED Decided 2026-09-30 Not in a subscription yet
New construction — 1 dwelling, 121 m² of housing floor area. Site area 626 m² GRANTED Decided 2026-08-07 Not in a subscription yet
Works on an existing building (extension without conversion) — public or community services (25 m²). Site… GRANTED Decided 2026-06-12 Included in France · public works

Included in the subscriptions on sale: 13 of 274

France · public works · €69/month excl. VAT, that is €2.27 a day

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274 building permits on record, 249 granted.

274permits
249granted

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Cachan
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What is being built Decision Date Reference
New construction — public or community services (416 m²). Site area 15,728 m² GRANTED Decided 2026-05-20 [subscribers only]
Works on an existing building (extension without conversion) — public or community services (310 m²), retail… GRANTED Decided 2024-12-17 [subscribers only]
New construction — public or community services (31 m²). Site area 37,042 m² GRANTED Decided 2023-12-12 [subscribers only]
Works on an existing building (extension) — housing (75 m²), public or community services (22 m²) GRANTED Decided 2023-01-17 [subscribers only]
Not in a subscription on sale: 26 more on this page
What is being built Decision Date Reference
Works on an existing building (conversion without extension) — 1 dwelling, 69 m² of housing floor area. Site… GRANTED Decided 2026-07-10 [not in any subscription on sale]
Works on an existing building (extension without conversion) — 8 dwellings, 508 m² of housing floor area… GRANTED Decided 2026-07-03 [not in any subscription on sale]
New construction — 1 dwelling, 63 m² of housing floor area. Site area 405 m² GRANTED Decided 2026-06-16 [not in any subscription on sale]
Works on an existing building (extension without conversion) — 1 dwelling, 21 m² of housing floor area. Site… GRANTED Decided 2026-06-11 [not in any subscription on sale]
New construction (extension without conversion) — public or community services (826 m²). Site area 13,484 m² GRANTED Decided 2026-04-24 [not in any subscription on sale]
Works on an existing building (conversion without extension) — 5 dwellings, 158 m² of housing floor area… GRANTED Decided 2026-04-03 [not in any subscription on sale]
New construction — 1 dwelling, 127 m² of housing floor area. Site area 678 m² GRANTED Decided 2026-03-10 [not in any subscription on sale]
New construction — 1 dwelling, 63 m² of housing floor area. Site area 642 m² GRANTED Decided 2026-02-20 [not in any subscription on sale]
Works on an existing building (extension) — offices (248 m²), retail (89 m²). Site area 163 m² GRANTED Decided 2026-01-30 [not in any subscription on sale]
Works on an existing building (conversion without extension) — hotel accommodation (95 m²), retail (95 m²)… GRANTED Decided 2026-01-23 [not in any subscription on sale]
New construction — 1 dwelling, 158 m² of housing floor area. Site area 249 m² GRANTED Decided 2026-01-09 [not in any subscription on sale]
New construction — 1 dwelling, 182 m² of housing floor area. Site area 155 m² GRANTED Decided 2026-01-09 [not in any subscription on sale]
New construction — 1 dwelling, 162 m² of housing floor area. Site area 305 m² GRANTED Decided 2026-01-09 [not in any subscription on sale]
New construction — 32 dwellings, 2,661 m² of housing floor area. Site area 1,650 m² GRANTED Decided 2026-01-05 [not in any subscription on sale]
New construction (extension) — 39 dwellings, 2,480 m² of housing floor area. Site area 14,757 m² GRANTED Decided 2025-12-24 [not in any subscription on sale]
New construction — 1 dwelling, 116 m² of housing floor area. Site area 739 m² GRANTED Decided 2025-12-09 [not in any subscription on sale]
Works on an existing building (extension) — 39 dwellings, 2,480 m² of housing floor area. Site area 14,757 m² GRANTED Decided 2025-09-30 [not in any subscription on sale]
Works on an existing building (conversion without extension) — retail (333 m²). Site area 340 m² GRANTED Decided 2025-09-19 [not in any subscription on sale]
Works on an existing building (extension without conversion) — 1 dwelling, 30 m² of housing floor area. Site… GRANTED Decided 2025-09-19 [not in any subscription on sale]
New construction — housing (2,959 m²), public or community services (980 m²). Site area 2,584 m² GRANTED Decided 2025-09-17 [not in any subscription on sale]
New construction — housing (8,000 m²), retail (654 m²). Site area 3,990 m² GRANTED Decided 2025-08-06 [not in any subscription on sale]
New construction — 2 dwellings, 196 m² of housing floor area. Site area 569 m² GRANTED Decided 2025-07-21 [not in any subscription on sale]
New construction — 1 dwelling, 104 m² of housing floor area. Site area 202 m² GRANTED Decided 2025-07-11 [not in any subscription on sale]
New construction — housing (19,843 m²), retail (495 m²). Site area 10,909 m² GRANTED Decided 2025-06-13 [not in any subscription on sale]
Works on an existing building (conversion without extension) — public or community services (400 m²). Site… GRANTED Decided 2025-06-02 [not in any subscription on sale]
New construction — 6 dwellings, 413 m² of housing floor area. Site area 480 m² GRANTED Decided 2025-05-09 [not in any subscription on sale]

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