Cell towers in La Celle-Saint-Cloud (Yvelines)

Most of the town's 14 masts are buildings (11); 1 road gantry and 1 water tower make up the rest of the mix.

Place names on the register include A13 Sens Paris-Province, 14 avenue du Puit D'Angle, 11 Allee de la Grande Promenade, 3 avenue des Puits, 18 Avenue Pierre Corneille and 7 Avenue Gustave Mesureur.

15 systems were switched on in the past 12 months. ANFR has approved one new site that is not live yet, plus additions on 3 existing masts. New: Bouygues Telecom (4G and 5G) at Butte de Rocquencourt - Sortie St Germain en Laye. 8 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

2016 was the busiest year, with 27 new systems, most of them 4G. Bouygues Telecom opened 5G here in November 2020; Free Mobile followed in December 2020, SFR followed in July 2021. The oldest transmitter still listed here goes back to 1997.

11 of the 14 masts are rooftop-mounted. The tallest support is 34 m at 8 avenue Charles de Gaulle (building). The median is 21 m, slightly below the Yvelines median of 25 m.

3.5 GHz 5G is declared by Free Mobile on 7 of its 8 masts, Bouygues Telecom on all 4 masts, Orange on 4 of its 5 masts and SFR on 4 of its 6 masts.

Vaucresson lies 1.3 km to the south-east and has only 8 masts.

Of the 14 masts in the commune, Free Mobile is the only carrier on 4 masts.

At 6 km² with 20,460 residents, the commune is dense enough that most antennas sit on rooftops rather than pylons. It is part of the CA Versailles Grand Parc (CAVGP) intercommunal grouping.

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