Cell towers in Treillieres (Loire-Atlantique)

Place names on the register include Le Moulin Laurent, Malabri, Les Haies, La Bernardais, Belle Vue and 1 Rue Lavoisier.

The highest support stands 47 m at La Bernardais (pylon). The median is 36 m, above the Loire-Atlantique median of 32 m.

No mast is operator-owned: On Tower France has 4, Cellnex has 4 and Hivory has 2.

2021 was the busiest year, with 21 new systems, most of them 5G. Bouygues Telecom switched on the first 5G here in November 2020; Free Mobile followed in December 2020, SFR followed in April 2021. The oldest transmitter still listed here goes back to 1996.

12 systems were switched on in the past 12 months. Approved additions not yet in service are pending on one existing mast, for example Bouygues Telecom (4G 2100 MHz) at 1 Rue des Frères Lumières. 10 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

Of the 12 masts in the commune, Bouygues Telecom is the only carrier on 4 masts.

3.5 GHz 5G is declared by Bouygues Telecom on all 5 masts, Orange on all 3 masts, SFR on all 3 masts and Free Mobile on 2 of its 5 masts. 100% of the town's masts carry 5G, more than across Loire-Atlantique towns with five or more masts (86%).

Nearby, Orvault (6.7 km to the south) has 17 masts, more than here.

By mast count, Treillieres is 11th of the 65 Loire-Atlantique towns that have five or more. With 12 masts for 10,600 residents, or 11 per 10,000, it has more masts per inhabitant than the median for those towns (8).

10,600 residents over 29 km²: supports are mostly pylons, not rooftops. It is part of the CC d'Erdre et Gesvres intercommunal grouping.

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