Cell towers in Sceaux (Hauts-de-Seine)

1 support is declared underground, in a gallery or a tunnel. For questions about exposure, see the exposure guide.

Most of the town's 10 masts are buildings (9); 1 underground or tunnel site make up the rest of the mix.

Declared locations include 4 Rue Paul Couderc, 17-19-21 avenue Jules Guesde, 15 rue Jean Giraudoux, Sentier de la Tour, 52 Rue des Aulnes and 54 boulevard Desgranges.

2018 was the busiest year, with 15 new systems, most of them 4G. Bouygues Telecom switched on the first 5G here in November 2020; Free Mobile followed in December 2020, SFR followed in December 2020. The oldest transmitter still listed here goes back to 1999.

9 systems were switched on in the past 12 months. Approved additions not yet in service are pending on 2 existing masts, for example Free Mobile (5G 700 MHz) at 30 avenue du President Franklin Roosevelt and Free Mobile (5G 700 MHz) at 4 Rue Paul Couderc. 6 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

9 of the 10 masts are rooftop-mounted. The tallest support is 40 m at 15 rue Jean Giraudoux (building). The median is 23 m, slightly below the Hauts-de-Seine median of 28 m.

3.5 GHz 5G is declared by Free Mobile on all 4 masts, Bouygues Telecom on 3 of its 4 masts, Orange on all 2 masts and SFR on 2 of its 3 masts.

1.9 km to the north, neighbouring Fontenay-aux-Roses has less 5G (73%).

By mast count, Sceaux is 33rd of the 36 Hauts-de-Seine towns that have five or more. With 10 masts for 20,884 residents, or 5 per 10,000, it has fewer masts per inhabitant than the median for those towns (6).

At 4 km² with 20,884 residents, the commune is dense enough that most antennas sit on rooftops rather than pylons. It is part of the Métropole du Grand Paris intercommunal grouping.

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