Housing Inventory
Homes completed in San Francisco, year by year.
Period. 2005–2026. 2026 is a partial year.
Affordable. Market-rate.
Whole building. If any unit is below market, every unit in the building counts as affordable. Use this if the question is which projects got built. A mixed building is not a market-rate project — the below-market units are often why it was allowed.
Below-market units. Only units marked below-market count as affordable. Use this if the question is how many homes someone can actually rent or buy below market. Most units in an inclusionary building still sell or rent at market.
A below-market unit is reserved for a household under an income cap. The rent or sale price is capped too. The cap is a share of area median income.
Those units show up in two ways.
A 100% affordable building is paid for with public money — city funds, tax credits, bonds. Almost every unit is below market. That is the city-funded layer on the map.
Inclusionary rules tell a market-rate project to include cheaper units on site, build them off-site, or pay a fee. On-site inclusionary is why one building can be mostly market with a slice below market — and why the two counts on this page diverge.
The below-market slice sells or rents for less than the same unit would on the open market. That gap is a cost to the project. It does not usually raise the sticker price of the market-rate units next door. Those still have to match nearby market homes.
The cost shows up somewhere else: a lower bid for the land, a thinner return, extra units if a density bonus applies, a fee instead of on-site units, or the building not getting built. If fewer homes are built citywide, market prices can rise — mixed buildings included. That is a supply effect, not a surcharge on the unit next door.
Affordable here is not public housing only, and it is not free.
Source. San Francisco Planning, Housing Production, 2005–present. Housing Inventory. Inclusionary buildings are in this table, not only city-funded ones. Demolitions are left out.