I guess it depends on a company policy. When we were doing a home renovation, we addressed carpenters, they worked the whole day (you can look through the leaffilter reviews if you are interested or in search of good service). In case you hire a freelancer, the working hours might vary.
I thought it depends on their plan and the contract, I remember the time when I needed a carpenter to make myself an adu, he took only a few hours to finish everything. And since I've always wanted an adu los angeles, the result was more than satisfying to me, and I like receiving compliments about it.
I just want to make a new porch and I need a woodworker and a hardware store to buy lumber.
A friend of mine advised me to look into timber merchants near me when starting a renovation, as they have a wide range of cheap commercial quality lumber near me, including treated timber. I was able to buy everything I needed and they delivered it to me for free. I also read a lot of positive reviews about this company, so I recommend it to you.