BMR-renting makes sense at 25% or more. You can kick someone out in a yr. if they've started to earn more. You can rent at-cost, and not lose money like you would in a BMR sale.

Wouldn't you rather be using the loan/tax subsidy to house 10 people in rentals instead of 2 in a BMR condo? Asking for 25% BMR is holding back development and the marginal number of units built in each development. 10% is good compromise for service jobs (though service jobs do pay competitively in the bay area for the most part, teachers make 100k+, cops make 150k+). I'm not saying end BMR completely, just a compromise for which valid reasons exist, with the aim of hopefully someday eliminating it.

How long has SF had a BMR program? and rent control? I think they've both hurt more than help. Possibly even by design.