Am I overreacting?

So me, our two kids, their father live together in a house we rent from his brother that he owns. Unfortunately his parents live the next street over (I hate living THAT close to family!) Anyways it can be annoying at times. But anyways we paid for so much In this house so that we could move in time before our lease was up at our old apartment last spring. Was okay with that since his brother let us pick the colors. Everything was done half fast and stuff still never got completely finished. Their dad help did some things but always charged my boyfriend and it be the littlest stuff. It bothers me because it’s not OUR house we own it’s his brothers so we shouldn’t be paying for the crap. Another thing is it bugs me so bad he charges his son. I could understand if it was a big job. But no! His dad sucked so much money out of us my man isn’t a handy type of dude🙄 like today our furnace is giving us issues and We we’re trying tog eat ahold of his brother and his dad said he will come over and look because it could be the thermostat. He took it apart and my boyfriend bought a new one and his dad out it on the wall and after wards without even discussing prior that it’ll be money he tells him to give him money. He does this so much it makes me so mad. Like during summer his dad would come over when my boyfriend is at work and I’m sleeping. I would wake up to hearing our grass being cut then he will tell my boyfriend to give him money he cut our grass like we’re fucking capable of doing it ourselves. After we told him he will do it. Am I overreacting for being upset? Like I feel like that’s sleezy. That’s taking unnecessary money from our babies. My boyfriend almost didn’t tell me the last couple times that he wanted money because he knows it’ll make me upset.