My hubby works with his dad in a business. Their "office" is in the parent's house. His dad has an office just off their bonus room with doors. My hubby's "office" is in the adjacent bonus room where his "office" consists of a table & a chair. His dad runs the business, my hubby helps. This bonus room is in the same room where hubby's mom has her make up puttin on station/ table.
My hubby is good at this Executive Search biz but I feel he could work anywhere & does not need to be in their home daily. Also, he is on a small salary I.e. $2250/ month. I feel like he is their " house boy"... there to do whatever needs doing for them. He has lunch with his dad almost everyday, goes shopping for household/ pool supplies at Costco with his dad & mows their grass weekly. Additionally, the other day while out on trip his phone rang. It was his parent's pool repairman calling my husband to let him know he was finished painting his parent's pool.
I am beyond irritated. Am I being unreasonable?

You are being unreasonable if your husband doesn't have a problem with the arrangement.

You sound very jealous of his relationship with his parents.