When I was at Event Horizon, I was one of the people voting that we should spend more on the house manager, but also at the time about a third (maybe even half?) of residents of Event Horizon were living on runway, and so a 10% increase in rent would mean 9% less time to lift off. And with 10 people (the size of a more normal house), this just covers rent for the house manager; being able to pay them a somewhat reasonable salary looks more like a 20% or 30% increase in rent.
When I was at Event Horizon, I was one of the people voting that we should spend more on the house manager, but also at the time about a third (maybe even half?) of residents of Event Horizon were living on runway, and so a 10% increase in rent would mean 9% less time to lift off. And with 10 people (the size of a more normal house), this just covers rent for the house manager; being able to pay them a somewhat reasonable salary looks more like a 20% or 30% increase in rent.