“How far from the lines was the house?”
About 100 yards.
But as for RF being dangerous, microwaves, yes. But even those would have given serious symptoms by now. If the FCC has granted a license then I’d say the technology is safe.
Current doctrine on microwaves centers around effects due to heating from energy absorption. Cancer fears posit different mechanisms that occur at lower power, which current standards don’t address, but these are considered unproven. The FCC uses an ANSI exposure standard. It’s been a while since I paid attention to the issue, but the number that pops into my mind is ANSI/IEEE C95.1. FWIW.