San Francisco’s Board of Supervisors is expected to pass a new ordinance that will require developers to build more affordable housing or pay higher-fees. The new inclusionary housing rules would require developers to rent or sell 15 percent of their housing units at below-market rates if the units are on the site of a market-rate development, according to the San Francisco Chronicle. If the developers build the below-market units off-site, they have to equal 20 percent of the market-rate development, and developers who choose not to build the units will pay a fee that is given to affordable housing developers.