A buyer looking at a Mountain View fourplex will spend hours on rent rolls, comparable sales, and cap rate math before asking the one question that actually determines the deal: when did this building receive its certificate of occupancy. The Mountain View Rent Stabilization Division says a building with a certificate of occupancy before February 1, 1995 has rent increases capped by city ordinance. The RentCheck article says every single-family home and condo, regardless of age, sits outside the CSFRA entirely under the state's Costa-Hawkins law. Everything in between falls into a middle tier with eviction protections but no rent ceiling.
That single date, buried in a county building record rather than a listing sheet, splits Mountain View's housing stock into two markets that behave nothing alike.
What the Law Actually Does, and to Whom
Mountain View voters passed Measure V, the Community Stabilization and Fair Rent Act, in November 2016, and it took effect that December. The ordinance created a five-member Rental Housing Committee with authority to set rules that sometimes go beyond the statute's bare text, and it drew its coverage lines around building age rather than neighborhood, price, or unit size.
A multi-family building with three or more units is fully covered, meaning both the rent cap and just-cause eviction protections apply, only if it had a certificate of occupancy before February 1, 1995. Buildings with three or more units built between that date and December 23, 2016 get just-cause eviction protection but face no ceiling on rent increases. Everything built after that date, along with every single-family home and every condominium regardless of vintage, sits outside the CSFRA entirely under the state's Costa-Hawkins law.
The Rental Housing Committee sets the allowable annual increase each year based on the change in the Bay Area Consumer Price Index, and it publishes a new figure every September. For the cycle that ran from September 2025 through August 2026, the adjustment was set at 2.7 percent, a useful benchmark for how modest these annual moves tend to be even in a high-cost rental market. Landlords can impose the adjustment once every twelve months with thirty days' written notice, and they cannot bank an unused increase to claim a larger one later. Owners who believe the standard adjustment does not provide a fair return can petition the Committee directly, a process that takes time and does not guarantee approval.
Where the Cap Never Shows Up
Ask what CSFRA means for a single-family home or a condo purchase in Mountain View and the honest answer is nothing. As of July 2026, the average home value across the city sits around $1.96 million, up roughly 1.8 percent over the past year. That figure spans everything from starter condos to large single-family lots, and none of that inventory is touched by the rent cap regardless of when it was built.
For a buyer comparing a single-family house against a small multi-family building on the same block, the rent law is not a minor footnote. It is the difference between two entirely separate underwriting exercises. The house's value moves with the open market. The multi-family building's income potential moves with a Rental Housing Committee vote.
Two Buildings, Two Different Bets
Owners of pre-1995 apartment buildings may sell rather than manage an asset subject to standard CPI-based increases, or pursue a fair-return petition through the Committee. The petition process can take time and does not guarantee approval. These choices may shape an owner's decisions about maintenance and capital investment.
Anyone evaluating a pre-1995 multi-family property should model returns against the Committee's published Annual General Adjustment for the current cycle, not against what a comparable uncapped unit could theoretically command. Treating a capped building's rent roll like open-market comps is the fastest way to overpay.
Why New Construction Clusters Where It Does
Drive around Mountain View and new multi-family construction is not spread evenly across the city. It tends to appear in specific pockets, and the CSFRA's exemption structure is a large part of why. Any building that gets built new, on a site assembled and redeveloped from the ground up, resets the clock entirely. It enters the market as exempt inventory, free of the rent cap that governs its older neighbors.
The city approved a seven-story condominium development on Tyrella Avenue in April 2025, a project that drew public pushback but moved forward anyway. That approval fits the same pattern playing out elsewhere in the city: new construction on reassembled parcels enters the market outside CSFRA's reach, which changes the calculus for developers deciding where redevelopment pencils out.
The incentive runs in both directions. Older buildings with rent-capped upside become less attractive to hold and improve. Sites where a full teardown and rebuild is feasible become more attractive to develop, because the resulting units carry none of the ceiling that constrains the building next door.
Google's Middlefield Park Site
After abandoning a mega-office project in North Bayshore in 2024, Google indicated in 2025 that it was exploring the sale of its 40-acre Middlefield Park office site in East Whisman, a property it had once proposed redeveloping with 1,900 homes. That office-site history is separate from the CSFRA questions buyers need to evaluate when underwriting residential properties.
What This Means When You're Underwriting a Purchase
For a buyer or seller working through a Mountain View multi-family deal, a few points follow directly from how the ordinance is built:
- The certificate of occupancy date is the single fact to confirm before modeling rent growth. It is available through county building records and, in most cases, through the seller's disclosure package.
- A building that is only eviction-protected, meaning it was built between February 1995 and December 2016, still carries no rent ceiling. That distinction matters when a broker or listing description uses the word "rent-controlled" loosely.
- Buying a single-family home or condo removes the question entirely. The CSFRA does not follow the property regardless of age, and resale value tracks the broader market rather than any rent-stabilization formula.
- A capped building is not automatically a bad investment, but its standard rent increases are set by the Annual General Adjustment rather than by what the unit could fetch on the open market. Pricing a deal on anything else invites a gap between projected and actual returns.
- The petition process exists for owners who believe the standard adjustment is insufficient, but it requires demonstrating an inadequate rate of return to the Rental Housing Committee, a process that takes time and does not guarantee approval.
None of this makes Mountain View's multi-family market harder to invest in. It makes it a market where the underwriting has to start with a date on a building permit rather than a number on a rent roll.
A Few Direct Questions
Does CSFRA affect the resale value of a single-family home or condo? No. Single-family homes and condos are exempt from the rent cap under state law regardless of when they were built. Their value tracks the general market, which is why the citywide average of roughly $1.96 million as of July 2026 is unrelated to anything the Rental Housing Committee sets.
How do I confirm whether an apartment building I'm considering is covered? The certificate of occupancy date is the key fact. Buildings with three or more units built before February 1, 1995 are fully covered. Those built between that date and December 23, 2016 have just-cause eviction rules but no rent cap. Anything newer is exempt from both. The city's Rent Stabilization Division can help confirm a specific address, and the full text of the ordinance is available through the city's own records.
Can an owner ever get an increase above the standard adjustment? Yes, through a petition to the Rental Housing Committee showing that the standard Annual General Adjustment does not provide a fair rate of return. It is a formal process with no guaranteed outcome, and it should be treated as a possibility to plan around rather than a number to underwrite against.
If you are weighing a Mountain View purchase, whether it is a single-family home where none of this applies or a small multi-family building where all of it does, the underwriting looks different depending on which side of that 1995 line you land on. Peninsula Realty Partners can walk through the certificate of occupancy history on a specific address and what it means for your numbers before you write an offer.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
