Banked Rent Increases in San Francisco: How to Recover the Raises You Skipped

In San Francisco, an owner who skips all or part of an allowable annual rent increase can generally preserve the unused amount as a banked increase and impose it later. Banked percentages are added rather than compounded; they reach back only to increases available on or after April 1, 1982, and they must be correctly calculated, properly licensed, and served with the right notice period.

Key Takeaways

• A skipped annual allowable increase is generally not lost. The unused amount may accumulate and be imposed on a later rent-increase anniversary date.
• Banked percentages are added together, not compounded, and under Rent Board Rule 4.12 they may not be rounded up.
• Only increases that could have been imposed on or after April 1, 1982 may be banked, and a full 12 months must elapse before banking applies.
• San Francisco does not cap the total banked amount an owner may impose at once - but rent may only be increased once every 12 months, and the notice period scales with the size of the increase.
• The allowable annual increase for March 1, 2026 through February 28, 2027 is 1.6%.
• A combined increase of 10% or less generally requires at least 30 days’ written notice. More than 10% generally requires at least 90 days.
• Rule 4.12 requires the notice to identify the banked portion and the years it draws on. Unlike some other defects, failing to include that breakdown does not by itself render the increase null and void - but it is still required, and it is the first thing a tenant petition will test.

What Banking Is Under the SF Rent Ordinance

Banking lets an owner defer an allowable increase without giving up the right to use that percentage later. Under San Francisco Administrative Code Chapter 37 and Rent Board Rules and Regulations section 4.12, a landlord who does not impose all or part of an available annual increase may accumulate the unused amount and impose it on or after the tenant’s subsequent rent-increase anniversary date.

Two limits sit on top of that. Only increases that could have been imposed on or after April 1, 1982 may be accumulated, and a full 12 months must elapse before banking becomes applicable. Rent may still be increased only once every 12 months, however large the accumulated amount.

Banking applies to the amount the owner was entitled to impose in that particular year. It does not create a new entitlement measured at today’s rate - a year skipped when the allowance was 1.4% banks 1.4%, not 1.6%.

This matters for owners who deliberately held the rent flat for a year or several. The decision may have been the right one at the time, and it does not automatically mean the unused allowance disappeared.

What a Banked Increase Is Actually Worth

Banking is usually discussed as a compliance question. It is a valuation question.

Take a unit at $3,000 a month where the owner skipped three consecutive years - the years carrying 1.7%, 1.4%, and 1.6%. Added rather than compounded, that is 4.7%:

• 4.7% of $3,000 is $141 a month.
• That is $1,692 of additional annual revenue from one unit, and because it is rent rather than a one-time recovery, it flows straight to NOI.
• At a 5% cap rate, $1,692 of NOI is roughly $33,840 of asset value - from one unit, from paperwork that already existed.
• At 4.7%, the combined increase is under 10%, so 30 days’ notice applies. Bank enough years to cross 10% and the notice period becomes 90 days, which is a scheduling decision as much as a legal one.

The figures are illustrative - whether each year’s allowance is genuinely available depends on the rent history in the file. That is exactly the point. The value is real, and it is only recoverable if the record can prove it.

How Banked Increases Stack and Are Applied

The most common error is treating several skipped increases as though each one grew on top of the last. That is not how the Rent Board calculates them.

Each unused annual percentage is identified from the year in which it became available. Those percentages are then added together with any current annual increase that is available. Rule 4.12 states plainly that banked increases are not compounded and are not rounded up, although an Administrative Law Judge may adjust a good-faith overage within half a percent.

So an owner with skipped allowances of 1.7%, 1.4%, and 1.6% reviews each year separately and adds where the amount is legally available, rather than recalculating each percentage against a rent that was never actually charged.

The Rent Board does not require a petition simply to impose a properly calculated banked annual increase. The calculation still has to comply with the Ordinance, and the unit must satisfy the Rent Increase License requirement - see our guide to the SF Rent Board Housing Inventory and rent increase license for that prerequisite.

One more amount can be banked alongside the annual allowance: where an owner is entitled to pass through 50% of the annual Rent Board fee and does not collect it, that amount may also be banked.

Notice Requirements: 30 Days vs. 90 Days

Banking can change the notice period, because several unused increases produce a larger increase when they are finally imposed together.

California notice rules generally require at least 30 days’ written notice where the total rent increase is 10% or less. Where the increase, alone or combined with other increases during the applicable period, exceeds 10%, at least 90 days’ written notice is generally required. Calculate the full proposed increase before preparing the notice, not after.

Rule 4.12 also requires the notice to tell the tenant which portion of the increase reflects a banked amount and the dates on which that banked amount is based.

It is worth being precise about the consequence here, because it is widely misstated. Rule 4.12 provides that failure to include that breakdown does not by itself render the increase null and void. The disclosure is still required; it is the first thing a tenant petition will examine, and other defects - an unlicensed unit, a miscalculated amount, an insufficient notice period - carry considerably heavier consequences.

The 2026 Allowable Increase and Why It Is Unusual

The allowable annual increase is 1.6% for increases effective March 1, 2026 through February 28, 2027. The Rent Board ordinarily sets the allowance at 60% of the increase in the Consumer Price Index for All Urban Consumers in the Bay Area, subject to the rules governing the calculation.

This year, the figure came out of an unusual transition. The federal government shutdown meant the U.S. Bureau of Labor Statistics did not publish the October 2025 CPI figure that Rule 1.12 normally relies on. The Rent Board addressed the gap by estimating the missing October value as the geometric mean of the published August 2025 and December 2025 values - the square root of their product - which preserves the October-to-October framework rather than changing the measurement period.

For owners, the practical point is simpler than the methodology: use the published 1.6%. Do not substitute an independently calculated CPI estimate.

SF Allowable Annual Rent Increases, Recent Years

Because banking draws on the percentage available in each skipped year, the historical rates are the working reference for any reconstruction:

The Rent Board publishes the applicable annual percentage each year along with historical increase information. Confirm each figure against the Rent Board’s own publication before relying on it in a notice.

A Note on Units Not Covered by SF Rent Control

Banking is a San Francisco rent-control concept. It does not travel to units outside the local rent-increase limits.

Where a unit is exempt from San Francisco’s limits - newer construction, or a qualifying single-family home or condominium under Costa-Hawkins - the state Tenant Protection Act (AB 1482) may still apply, with its own cap and its own notice rules, and no equivalent banking mechanism. Establish which regime governs the unit before calculating anything. An owner who banks percentages on a unit that was never subject to the local allowance in the first place has built the entire calculation on the wrong footing.

Common Mistakes That Can Derail a Banked Increase

The money may have been available all along. The paperwork is what determines whether it can be collected.

• using the current year’s percentage for an earlier skipped year;
• compounding percentages instead of adding them, or rounding up;
• banking a year that predates April 1, 1982;
• starting from the wrong lawful base rent;
• using an incorrect anniversary or effective date, or imposing an increase less than 12 months after the last one;
• giving too little notice for the total percentage being imposed;
• omitting the banked-amount breakdown and the years it draws on from the notice;
• imposing an increase without the required Housing Inventory reporting and rent increase license; and
• treating a unit exempt from local limits as if the local allowance applied.

These do not all carry the same weight. An increase imposed while the owner is unlicensed is null and void under Rent Ordinance section 37.15. A miscalculated amount is challengeable through a tenant petition. A missing banked-amount breakdown is a defect but is not, on its own, fatal to the increase under Rule 4.12. Knowing which is which determines whether you correct the notice or unwind the increase.

This is also why an owner should not reconstruct several years of increases from memory. An error early in the rent history propagates through every number that follows - and the same reconstruction is what a buyer’s rent roll audit will run in the opposite direction.

For additional context, our guide to San Francisco housing laws for property owners covers related local and state requirements.

How to Document Eligibility for Banked Rent Increases

A clean file makes the calculation easier to defend and easier for the next owner or property manager to pick up.

Keep the original lease, the lawful starting rent, every subsequent rent-increase notice, the effective date and amount of each increase actually imposed, and the annual allowable percentage that was available but not used in each year. Retain the unit’s Housing Inventory and rent increase license records for the relevant periods as well.

When a property changes hands or management companies, do not reduce the history to the current rent alone. The useful record is the sequence that explains how that rent was reached and what unused allowance remains - and on a multi-unit building, that sequence is the difference between a bank you can impose and one you can only estimate.

Expert View

“The money owners most often leave on the table is not from a single missed increase, but from several small increases that were never tracked properly. Banking can preserve that value, but only if you can reconstruct the rent history and show exactly what was available, what was used, and what remains.”

Tammy McNaught, CEO, BanCal Properties

Reconstructing a rent history across several years and several units is the kind of work that pays for itself once. Owners who want rent histories and future increases handled as part of ongoing operations can review BanCal’s property management services or contact our team to discuss the property.

Frequently Asked Questions