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Masts and the grid: what is on record, and how far

It is the question buyers ask most and registers answer least. What is public: where every mobile-phone site is and what level was measured at it, and where the high-voltage lines run. What is neither public nor a report’s business: what it means for your health.

Masts: Infoantenas

The Ministry publishes at Infoantenas every mobile-phone site with the certified exposure measurements (in µW/cm²) taken around it, and the legal limit (RD 1066/2001, 450–1,000 µW/cm² depending on frequency). Search the address and see: how many sites within 300 m, how far the nearest one, what level was measured. Measured values in urban settings usually sit between 0.1 % and 5 % of the limit.

Lines and substations

High-voltage lines (132 kV to 400 kV), medium-voltage lines and substations are in open mapping (OpenStreetMap, the distributors' maps, GeoEuskadi). What matters for a home is the distance to the nearest line and its voltage. A 132 kV line 50 m away is a fact the listing does not give and the buyer usually discovers at the viewing, or afterwards.

What a PropVer report says — and does not

It says: the number of phone sites within 300 m, the distance to the nearest and the highest published measured level; the nearest high-voltage line with its voltage and distance; the nearest substation. It marks attention when a high-voltage line is within 100 m or a mast within 50 m, by a fixed, stated rule.

It does not say whether that is safe or dangerous. PropVer reproduces what is on record and the distance; the health assessment belongs to a health professional, not to a report on registers. That is a deliberate decision, not an omission.

What to ask

The seller: whether the community of owners has a rooftop lease with an operator (income for the community, a mast above your home). The distributor, if you plan to build: the line's easement. Whoever you choose: what it means for you.

Check it yourself

Check your property in two minutes

Address, cadastral reference, coordinates or a click on the map. If it is in the service area, the report is free during the beta.

Check a property

More guidesWhat to check before buying property in Spain The cadastral reference: the key to a Spanish property Planning: what you can do with the parcel, and what can be done to it Flood zones: what the map knows and the viewing does not Contaminated soils: what the deed must say and the listing never does The history of the ground: eighty years of aerial photographs Noise: what the midday viewing does not tell you ITE, IEE and the energy certificate: the levy that is coming and the bill you will pay Radon: the building-code map and when measuring is worth it Water and discharges: whether the tap ran last summer

Updated 2026-10-23.