I've had several houseboys. And tried out some that did not make it. Being sexy is not enough. Key criteria are being trustworthy, reliable, dependable and desire to do a good job, A good houseboy likes to please, not just go thru the motions. And wants to be of service, help out, make a contribution to the employer. Open honest transparent communication is essential. Shared expectations, clarity about duties, and explicit adult conversation about sexual play are critical if an arrangement is going to work for both the houseboy and employer.
As the houseboy, especially if relocating, realize not all "employers" are going to treat a boy right -- meaning with respect and looking out for the boy's well being. There are users out there -- some are "employers" and some are "houseboys". All take an no give types. As a houseboy, don't put yourself in a situation where you are trapped and have no options. You have a right to boundaries, limits, and to say no. Don't forget that and get ran over and used like a doormat instead of a houseboy.
My current part-time houseboy has been with me almost 3 years. He is now finished with school and started his first career job. He will be moving on soon. He commutes some distance to work for me. My houseboy before that was with me nearly 4 years, until he finished his graduate degree. I helped him land his first career job -- we are still friends. I am not just an "employer", but an older, more experienced male that these boys can look to for mentoring, advice when needed and even a bit of help at times. We enjoy each others company, our sexual connection and getting the work done. It needs to be a win/win. That is up to both the employer and boy.