"In 1998, an expert working group, organized by the National Institute of Healthâ€™s National Institute of Environmental Health Sciences (NIEHS), assessed the health effects of exposure to extremely low frequency EMF, the type found in homes near power lines. Based on studies about the incidence of childhood leukemia involving a large number of households, NIEHS found that power line magnetic fields are a possible cause of cancer. The working group also concluded that the results of EMF animal, cellular, and mechanistic (process) studies do not confirm or refute the finding of the human studies. The International Agency for Research on Cancer (WHO) reached a similar conclusion."
Even if one chooses not to believe the evidence the resale of the property will be effected because so many people will not live near power lines or cell towers. The articles at Your-Road-Home.com, Snags, Snares and Pitfalls will serve you well.
Best of Luck, Stephen