A net total of 627 housing units were built within the borders of San Francisco’s Mission District from 2010 through the end of 2014.

Of those 627 units, roughly 10 percent (60) were designated as Below Market Rate (BMR) units which are to remain affordable to households earning up to 120 percent of the Area Median Income (AMI).

And of those 60 units, none were built to serve lower (50-79 percent of the AMI), very low (30-49 percent of the AMI), or extremely low income (less than 30 percent of AMI) households according to the City’s latest Policy Analysis Report for the proposed legislation.

The Area Median Income for an individual in San Francisco is currently $71,350. It’s $81,500 for a couple and $101,900 for a household of four.

San Francisco’s Planning Department has identified 324 potential building sites in the Mission on which five or more units of additional housing could be developed. The 324 sites, which exclude those for which the permitting is already in the works but not those for which a development has been proposed (such as for 1979 Mission Street), could support nearly 4,250 units of housing.

If the current development trend continues, those 324 sites will yield roughly 300 units of affordable housing and 3,950 market-rate units, or up to 366 units of affordable housing and 3,874 market-rate units if all developers were to designate 12 percent of onsite units in all developments with at least 10 units as Below Market Rate, the percentage designated in San Francisco’s affordable housing mandate versus the voter approved but non-binding policy that calls for 33 percent of new development in the City through 2020 to be Below Market Rate.

And with that we’ve set the stage for this afternoon’s Board of Supervisors hearing at which a vote on the proposed legislative moratorium on market rate housing development in the Mission is slated to occur.