Before I quit my job to take a year off, I was paying about 10.5% of net income in rent, but the cheap rent I'm paying is pretty rare here in Colorado, which could be considered an HCOL these days.
This has been great, as it has allowed me to max out my retirement accounts for several years and get the FIRE ball rolling. It also allows me to post on threads like this and feel like I still fit within the popular FIRE metrics. However, I plan to move closer to family next year, and will probably move into my own apartment at that time, which will cost more. I've learned that I strongly prefer a larger living space for comfortably having groups of friends over, so that could affect things, too. I have no doubt there are ways to achieve this while keeping costs down, but I'm having to ask myself if not keeping up appearances and possibly being able to invest less are worth having the extra space for company, and I suspect they will be. It might just mean losing face and having to bite the 25% bullet, or something like that.