Can you build a fourplex in Sacramento? Yes, in every neighborhood, with no unit cap.

Yes. Since October 17, 2024, a fourplex is allowed by right in Sacramento’s single-family and duplex zones (R-1, R-1A, R-1B, R-2). "By right" means you do not need a rezoning or a variance for the extra units; if your plans meet the objective standards, the city reviews them through its Site Plan and Design Review process rather than a discretionary public hearing on the unit count. In fact the ordinance goes further than a fourplex: there is no cap on the number of units in those zones. The real limit is the size of the building, set by a floor-area rule, not the number of homes.

There is no fixed unit cap in the R-1, R-1A, R-1B and R-2 zones. This is what made Sacramento the first jurisdiction in the country to drop unit caps in single-family zones. What limits you instead is the floor area ratio (FAR), a rule that ties the total building floor area to the size of your lot. A sliding scale rewards more units with more floor area, up to the ceiling set for your area. So the practical answer is: as many small homes as the allowed building size can hold, not a number written into the zone.

FAR, or floor area ratio, is the total building floor area divided by the lot area. Sacramento uses a sliding scale (Figure LUP-5): one unit is limited to 0.4 FAR, two units to 0.7, three-to-four units to 1.0, five-to-seven to 1.1, eight-to-ten to 1.25, and so on. The scale gives you more floor area only if you commit to more units, but it also caps how big the building can get. On a small lot that ceiling, plus height and setback limits, is usually what decides whether a fourplex actually fits.

Yes, in the sense that a single house is no longer the only thing you can build. The 2040 General Plan and the Missing Middle Housing ordinance let you put a duplex, fourplex, cottage court, or larger small building on lots that used to allow one house. You can still build one house if you want. The change is that the "one house only" rule is gone in the R-1, R-1A, R-1B and R-2 zones. Sacramento was the first California city to make this change apply to every single-family neighborhood.

It allows a broad set of small buildings: duplexes, fourplexes, six-plexes, eight-plexes, ten-plexes, cottage and bungalow courts, and small homes on small lots (lots between 1,200 and 2,899 square feet). Buildings can generally reach about 2.5 storeys, with the exact size set by the floor-area rule and by how close the lot is to transit. The idea is "missing middle" housing: buildings that look like houses from the street but hold several homes.

No. Sacramento removed minimum off-street parking requirements citywide as part of the 2040 General Plan work, and the city describes this as one of the cost savings built into the reform. You may still add parking if you or your renters want it, but the city no longer forces you to. On a narrow lot this matters a lot, because a required parking pad can crowd out the space you need for a third or fourth home.

Because legal permission and a project that pencils out are two different things. About 18 months in, Sacramento had 34 applications and 22 approvals, but zero built projects between 3 and 20 units. Builders and advocates point to the "bulk controls" (rules that dictate the shape, size and even the roof style of the building) as a main reason mid-size projects are hard to make work. Construction cost, land price and financing also decide what actually gets built, and none of those changed when the zoning did.

Bulk controls are objective standards that shape the building envelope: height, setbacks, how the mass is broken up, open space, tree planting, and design-review rules on things like roof form. They exist to keep new small buildings looking like they belong on a single-family street. The problem builders raise is that these controls can be strict enough to make a three-to-ten-unit building physically hard to fit, or too small to be worth building. The city is now looking at loosening some of these controls while adding new width and depth limits in their place.

Right now it is an interim ordinance, adopted in September 2024 and meant to be tested before the city writes a permanent version. As of mid-2026 the city is working through a citywide rezoning to line the zoning code up with the 2040 General Plan, and it expects to adopt a more permanent version by the end of 2026. The core direction, small multi-unit housing allowed by right in every residential neighborhood, is not expected to reverse. What is likely to change is the detail of the bulk controls, in an effort to get more projects built.

It applies to the R-1, R-1A, R-1B and R-2 zones, the single-unit and duplex residential zones, where about 65% of the city’s housing sits. It does not apply inside the airport safety zones the ordinance calls out. If you are checking your own lot, the city’s Land Information Lookup App shows your zone, your General Plan maximum FAR, and whether you fall in an airport influence area.

Yes. The ordinance includes anti-displacement rules. A project cannot result in fewer dwelling units than already exist, cannot demolish a unit that a tenant has lived in within the past year, and cannot demolish a unit that is under an affordable-housing agreement. These rules are meant to make sure the reform adds homes rather than replacing renters. A project has to meet these conditions to be approved.

Yes. Accessory dwelling units (ADUs) are handled separately from the missing-middle ordinance and do not count toward the project’s floor-area limit. Under the city’s local rules an owner can add up to two ADUs, and under state rules up to three (one attached ADU, one detached ADU, and one junior ADU). Because ADUs sit outside the FAR math, they can be a practical way to add homes when the main building has hit its size ceiling.

Sacramento wrote one of the most open missing-middle rules in the country (no unit cap, every neighborhood) and still produced zero mid-size buildings in about 18 months. The lesson is the same one Minneapolis and California’s SB 9 taught: making density legal does not make it get built. The size-and-shape rules, the land cost, and the financing decide the outcome. Sacramento is now trying to fix the shape rules, which is the honest test of whether the reform works. Not the day it passed, but whether builders can actually use it.