Cell towers in Rennes (Ille-et-Vilaine)

34 supports are declared underground, in a gallery or a tunnel. For questions about exposure, see the exposure guide.

34 underground or tunnel sites and 87 buildings, 48 pylons and 5 churches or religious buildings carry the commune's antennas.

Declared locations include Allée Jean Leray, Metro Triangle, Metro Station les Gayeulles, Metro Jacques Cartier, 96 Boulevard de Metz and Base de Loisirs des Gayeulles.

164 systems were switched on in the past 12 months. ANFR has approved 23 new sites that are not live yet, plus additions on 40 existing masts. New: Bouygues Telecom (4G and 5G) at 266 rue de Fougères, Bouygues Telecom (4G and 5G) at 17 Rue Pierre Semard and Bouygues Telecom (4G and 5G) at 1 Rue D'Uppsala. 88 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

The commune owns 41 of the 175 masts, Totem owns 19.

2013 was the busiest year, with 485 new systems, most of them 4G. Local 5G started with SFR in March 2021; Orange followed in March 2021, Free Mobile followed in March 2021. The oldest transmitter still listed here goes back to 1994.

The highest support stands 65 m at 9 avenue Janvier (radio relay tower). The median height of measured supports is 30 m.

Of the 175 masts in the commune, 36 masts carry all four networks.

By mast count, Rennes is 1st of the 36 Ille-et-Vilaine towns that have five or more. With 175 masts for 230,890 residents, or 8 per 10,000, it has fewer masts per inhabitant than the median for those towns (10).

3.5 GHz 5G is declared by Orange on 52 of its 96 masts, SFR on 43 of its 84 masts, Bouygues Telecom on 33 of its 92 masts and Free Mobile on 32 of its 74 masts.

Nearby, Chantepie (5 km to the south-east) has only 12 masts.

Source: operator declarations to ANFR, as of October 2026. Projects that are only approved are left out of the totals.