is it by your garage? i'm thinkin' he's looking to steal something, this seems pretty nervy to me. It's your property. Next thing you know he's going to be watering his lawn when you're gone. I say nip it in the bud. My mother had neighbors doing construction who wanted to use her water and electricity - they ended up stealing electricity for a long time, she bought a new washing machine because she thought hers was broken; it just wasn't getting enough power because of their hookup! I figured it out when popcorn wouldn't pop in the microwave. Turned out it was a city-wide problem.