California 5-10 unit apartment buildings: a lender’s view of the state

Why California small multifamily is its own category

California has a large stock of small apartment buildings. Many were built between the 1920s and the 1980s, before large-scale garden complexes and mid-rise construction took over, and they sit in established neighborhoods close to jobs, transit and shopping. For an investor, a 5-10 unit building is often the first step past fourplexes, and it brings a different loan.

The financing difference starts at the fifth unit. Residential lending rules end at four units, so a five-unit building is underwritten as multifamily even when it looks like a large house with extra doors. Lenders read the building unit by unit, ask for operating history and rely on an appraisal built around the income approach. In California, they also read the rent roll against a set of state and local rules that do not exist in most other states.

The statewide rent cap and just-cause rules

The Tenant Protection Act, codified at Civil Code § 1947.12, limits annual rent increases for most covered rental housing. The cap is tied to inflation with a fixed ceiling, and the California Attorney General publishes the current maximums by region. Housing with a certificate of occupancy issued within the previous 15 years is exempt on a rolling basis, along with some other categories. A companion section, Civil Code § 1946.2, limits evictions to listed just causes after a tenant has been in place for a set period.

Most 5-10 unit buildings in California are old enough to be covered. In practice, that means an owner cannot count on raising long-term tenants to market rent quickly. When a unit turns over voluntarily or for a lawful reason, the owner generally sets the new starting rent, and the cap applies from there.

For a lender, the conclusion is simple. The loan is sized on rents in place, checked against market rent in the appraisal. A business plan built on fast increases is the borrower’s upside, not qualifying income.

Local rent programs and Costa-Hawkins

Many California cities run their own rent stabilization programs, which can be stricter than state law and often require registration. Los Angeles, San Francisco, Oakland, Berkeley and San Jose are among the best known, and others have adopted narrower rules. Each program defines which buildings it covers, usually by the date the building was first occupied.

State law limits how far local programs can reach. The Costa-Hawkins Rental Housing Act, at Civil Code § 1954.50 and following, generally keeps local rent limits from applying to buildings with a certificate of occupancy issued after February 1, 1995, and it allows owners to set a new rent when a unit is vacated. Because so much of the 5-10 unit stock was built before 1995, local coverage is a real underwriting question for most buildings on this site.

• Identify which program, if any, covers the building.
• Confirm registration is current and matches the rent roll.
• Keep the rent history for each unit, including the move-in date.
• Ask about open petitions or disputes before you rely on the numbers.

Proposition 13 and the tax bill you will actually pay

Under Proposition 13, a change in ownership generally triggers reassessment to market value. For a buyer, the tax bill is rebuilt from the purchase price, and the county may send a supplemental bill for the part of the year after closing. A seller who has owned the building for decades may be paying far less, so the seller’s tax line in a listing package is not your tax line.

Special district taxes, such as Community Facilities District (Mello-Roos) charges and local assessments, appear on many tax bills and are separate from the base tax. Lenders include them in the payment. Use the full parcel bill, rebuilt at your price, in any coverage estimate.

Retrofits, inspections and building age

Older California buildings come with safety programs that a lender will ask about. Several cities, including Los Angeles, San Francisco, Oakland and Berkeley, adopted mandatory retrofit programs for certain wood-frame buildings with soft or weak ground stories, a common design for buildings with parking under the units. State law also requires periodic inspection of exterior elevated elements, such as balconies and walkways, on multifamily buildings with three or more units.

None of this makes a building unfinanceable. It does mean that permits, sign-offs and inspection reports belong in the file from the start.

Insurance is part of underwriting

California’s insurance market has become harder for some property types and locations. Older wood-frame buildings, wildfire-exposed hillsides and coastal blocks can see fewer carriers and higher premiums, and some owners place coverage through the state’s residual-market plan alongside a separate policy for the rest of the coverage. A quote in hand is the only reliable insurance number. Lenders include the premium in the payment, so it moves coverage directly.

How we use these notes

The metro pages below apply these state rules to eight California markets with large stocks of 5-10 unit buildings. They are written qualitatively on purpose. We do not publish rent tables, vacancy figures or price statistics, because they age quickly and say little about a specific building. What we can describe reliably is the building stock, the local rules and the questions an underwriter will ask.

If you are financing a single-family rental or a duplex, triplex or fourplex, this site is not the right place. For all California DSCR options, see dscrloancalifornia.com.