Cell towers in Beaumont-sur-Oise (Val-d'Oise)

Declared supports include 1 camouflaged "tree" pylon, with buildings making up most of the remainder.

Masts stand at Les Longues Pièces, 25 rue Edmond Turcq, 5 rue Charles Béart, 39 Rue de la Cimenterie and Rue Saint-Roch.

The declared supports are a 31 m camouflaged "tree" pylon, at Les Longues Pièces, for Free Mobile and Orange; a 23 m building, at 25 rue Edmond Turcq, for Orange; a 32 m building, at 5 rue Charles Béart, for Bouygues Telecom and SFR; a 25 m pylon, at 39 Rue de la Cimenterie, for Free Mobile; a 25 m pylon, at Rue Saint-Roch, for Orange; a 25 m building, at 25 Rue Edmond Turcq, for Free Mobile.

Systems from 1996 are still on the register. Local 5G started with Free Mobile in June 2021; Orange followed in October 2022, SFR followed in June 2023. 2017 was the busiest year, with 10 new systems, most of them 4G.

Over the past 12 months ANFR recorded 8 new systems here. 2 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

The highest support stands 32 m at 5 rue Charles Béart (building). The median height of measured supports is 25 m.

On 3.5 GHz, the fastest 5G band: Orange on all 3 masts, Free Mobile on 2 of its 3 masts, Bouygues Telecom on its only mast and SFR on its only mast.

Chambly lies 3.8 km to the north-west and has less 5G (83%).

Among the 43 Val-d'Oise towns with at least five masts, Beaumont-sur-Oise ranks 37th by mast count.

Of the 60 systems declared here, 15 are installed but not yet in commercial service (ANFR, as of October 2026).