Your Corridor's Vacancy Rate Is Probably Lying to You.

San Francisco's Bayview just showed what happens when you measure economic activity instead of occupancy. The gap between those two numbers is the thing your district isn't tracking.

Here is a number that should not be possible: the Third Street commercial corridor in San Francisco's Bayview-Hunters Point neighborhood has a 7% vacancy rate. By that measure it is one of the healthier commercial corridors in the city. Union Square, by comparison, has vacancy well above 20%. Downtown San Francisco is worse.

And yet by the end of 2025, sales tax revenue from Bayview remained approximately $100,000 below peak pandemic-era levels — lower than even the worst months of COVID, when the streets were genuinely empty and businesses were legally closed.

A corridor with a 7% vacancy rate generating less economic activity than it did during a pandemic shutdown is not a corridor with a 7% problem. It is a corridor with a problem that the vacancy rate is structurally incapable of measuring.

That gap — between the number your district is citing and the economic reality your merchants are living — is the subject of this piece.

How Vacancy Rates Are Counted and What They Miss

Vacancy rate methodology varies by organization, but the standard approach involves some combination of physical observation and lease status review. A space is counted as occupied if it has a tenant — meaning there is a lease, there is signage, there appears to be a business operating. A space is counted as vacant if it is visibly empty, for lease, or clearly not in use.

What this methodology cannot capture is the spectrum between fully occupied and fully vacant. A restaurant that is technically open but serving 15 covers on a Saturday night when it was designed for 60 is not vacant. It is occupying a space that is economically underperforming relative to its capacity and its neighbors' expectations. A dry cleaner that is open three days a week because it cannot generate enough revenue to justify five is not vacant. It is occupying a space whose presence in the occupancy count creates a false impression of corridor health.

Bayview's 7% vacancy rate counts leased spaces as occupied. It does not count how many of those businesses are operating at the hours and volume that a genuinely active commercial corridor requires. The sales tax data measures what actually happened economically — how much money changed hands, how much taxable commerce occurred — and tells a completely different story.

The Office of Economic and Workforce Development has acknowledged the gap in its own reporting. Its characterization of the 7% vacancy figure includes a note that the number does not capture inactive businesses or those with limited business hours. That acknowledgment is buried in the technical footnotes of corridor assessment reports. It should be the headline.

The Specific Bayview Story

The Bayview-Hunters Point corridor on Third Street had one of the fastest-growing commercial districts in San Francisco prior to the pandemic. The T-line light rail extension, installed in 2007, connected what had been an isolated neighborhood to the rest of the city's transit network and produced a dramatic increase in foot traffic and economic activity. Sales tax revenue grew consistently through the early 2010s and into the late 2010s.

The pandemic hit hard. Sales collapsed in the first quarter of 2021, dropping to $2.26 million — a decline of nearly $700,000 from prior year levels. The corridor partially recovered in Q2 2021, briefly exceeding pre-pandemic levels. Then the recovery stalled and never completed.

What the sales tax data shows is that Bayview's commercial corridor has not recovered from COVID in any economic sense, even as its vacancy rate — measured by lease status and physical occupancy — has returned to near-normal levels. The businesses are there. The economic activity they were generating before COVID is not.

Marcus Tartt, director of the Renaissance Entrepreneurship Center's Bayview location, offers the diagnosis that the vacancy data cannot: "The businesses and to a large extent that corridor hasn't adapted to provide the kind of services that is more reflective of the community." The population of the neighborhood has shifted significantly — from majority Black to a majority of Asian and Hispanic residents, with Black residents now comprising approximately 23% of the population. The commercial corridor's tenant mix largely reflects the population that lived there 15 years ago, not the one that lives there now.

A corridor can be 93% occupied and economically failing simultaneously. Bayview is the proof.

Why This Matters Beyond San Francisco

The Bayview story is San Francisco-specific in its details. The underlying data problem is national.

Every commercial corridor in America has a vacancy rate. Most of them are measured the same way — physical observation, lease status review, a periodic count of which storefronts appear to be active. The number gets cited in district annual reports, in grant applications, in presentations to boards and city councils. It is the primary metric by which corridor health is assessed and communicated.

And it is systematically incomplete for exactly the reasons the Bayview case illustrates. It counts whether a space has a tenant. It does not count whether that tenant is generating the economic activity that makes a commercial corridor worth having.

The distinction matters for merchants in three specific ways.

First, it affects your decision about where to locate. A merchant evaluating a corridor for a new location who sees a 7% vacancy rate and interprets it as a signal of corridor health may be making a decision based on a number that overstates that health by a significant margin. The absence of visible vacant storefronts is not the same as the presence of economic vitality. Before signing a lease, the question to ask is not just "how many storefronts are empty" but "how much economic activity is actually happening in this corridor and what is the trajectory."

Second, it affects your understanding of your own performance. A merchant whose sales are flat or declining in a corridor with low official vacancy may conclude that their business has a problem when the corridor itself has a problem that the vacancy rate is not capturing. Distinguishing between business-level underperformance and corridor-level underperformance requires data that goes beyond what the vacancy count provides.

Third, it affects the case your district makes on your behalf. If your district organization is presenting your corridor as healthy based on a vacancy rate that does not reflect actual economic activity, it is undermining its own credibility with anyone who has access to the underlying economic data. City agencies, potential sponsors, and prospective tenants who look beyond the vacancy headline will find a different picture.

What Better Data Looks Like

The sales tax approach that produced the Bayview analysis is not available to most merchants or district organizations directly — sales tax data at the corridor level requires either a public records request or a reporting relationship with the city's revenue department. But there are proxies that most districts can access.

Foot traffic data. Pedestrian counters, either installed by the district or available through third-party providers like StreetLight Data or Placer.ai, measure how many people are physically present on a corridor at different times of day and different days of the week. A corridor with 93% occupancy and declining weekday foot traffic is telling a different story than one with 93% occupancy and growing weekend foot traffic. The CLA case study discussed in this publication shows exactly this kind of differentiation — the Loop's weekday numbers lagging while weekend numbers exceed 2019 levels. That split is only visible if you are measuring foot traffic independently of vacancy.

Transaction data. Some district organizations have relationships with payment processors or point-of-sale systems that allow aggregate transaction volume tracking at the corridor level without revealing individual merchant data. This is closer to the sales tax proxy than a vacancy count — it measures whether money is actually being spent rather than whether a lease exists.

Merchant survey data. Direct surveys of your merchants on sales volume trends — not dollar amounts, but directional indicators of whether sales are up, flat, or down year over year — provide a much more accurate picture of corridor economic health than a storefront count. A survey that takes 10 minutes to administer and captures the self-reported trajectory of 30 merchants tells you more than a physical vacancy count.

Hours of operation tracking. A simple log of which businesses in your corridor are open on which days and at which hours is not a substitute for economic data but it is a meaningful supplement to vacancy rates. A corridor where 20% of technically occupied businesses are open fewer than four days a week has a different economic profile than one where all occupied businesses are open six days a week. This data is collectable through a quarterly walking survey with no technology required.

The Demographic Mismatch Problem

The Bayview case adds a dimension that pure economic data cannot fully capture and that corridor organizations often avoid confronting directly.

When a neighborhood's population changes significantly — in demographics, in income, in cultural identity, in daily needs — the commercial corridor that served the prior population does not automatically adapt. Businesses that opened to serve one community do not automatically transform to serve a different one. The physical turnover of a commercial tenant mix is slow even in healthy markets and very slow in challenged ones.

The result is corridors that are economically underperforming not because there isn't demand, but because the supply — the actual businesses present — does not match the demand profile of the people who live there now. This is not a vacancy problem. A new business serving the current population that opened tomorrow would not be filling a vacant space — it would be displacing an existing business that serves a population that has largely moved away.

For merchants, the demographic mismatch question is one that most district organizations are reluctant to raise explicitly because it requires honest conversations about who the corridor is for and who it is currently serving. But a merchant considering entering a corridor with visible demographic transition should be asking it directly: is the existing customer base in this corridor growing or shrinking, and is the existing merchant mix aligned with the population that will be here in five years?

The vacancy rate has nothing to say about this question. The sales data, demographic data, and a honest conversation with existing merchants on the corridor have a great deal to say about it.

How to Read Your Own Corridor More Honestly

Three questions that cut through the vacancy rate to the economic reality underneath it.

What is the sales tax revenue trajectory for your corridor over the past five years? In most cities, this data is available at the census tract or corridor level through public records requests to the city revenue department or through state sales tax disclosure reports. Some cities publish it directly through economic development data portals. It takes a records request and usually a couple of weeks to get. The picture it provides is worth the effort.

What percentage of your corridor's occupied businesses are operating at full capacity — the hours, days, and volume they were designed for — versus operating at reduced capacity because the economics don't justify more? This is a merchant survey question. Ask it directly. Most merchants will tell you honestly. The answer, aggregated across your corridor, gives you a utilization rate for your occupied stock that is meaningfully different from your occupancy rate.

What does the demographic and income profile of your corridor's trade area look like today compared to five years ago and ten years ago? Census data, American Community Survey data, and the retail analytics platforms that many district organizations already subscribe to can answer this. If the population your corridor serves has changed significantly, the question of whether your tenant mix reflects that change is the most important commercial corridor question you can ask.

A vacancy rate is a floor-level measure of corridor health. It tells you the minimum — how many spaces have no one in them at all. The ceiling measure — how much economic activity is the corridor generating relative to its potential — requires different data, more effort, and more honesty about what the numbers mean.

Bayview's 7% vacancy rate with sub-pandemic sales is an extreme case of the gap between the floor and the ceiling. But every corridor in America has some version of that gap. Most of them are not measuring it.

What Your District Should Be Reporting

If your district organization is currently reporting only vacancy rate data to your board, your city, and your stakeholders, you are reporting the least informative measure of corridor health available. Vacancy rate tells your audience how many spaces don't have tenants. It tells them nothing about whether the spaces that do have tenants are generating the economic activity that makes a commercial corridor worth sustaining.

The minimum useful reporting package for a commercial corridor in 2026 includes vacancy rate by block and by submarket, foot traffic data by day of week and time of day with year-over-year comparisons, self-reported merchant sales trajectory from a quarterly survey, and some proxy for aggregate economic activity — sales tax, transaction volume, or a synthesized index.

Not all of these are easy to collect. The foot traffic data requires either sensor installation or a subscription to a third-party mobility platform. The sales tax proxy may require a public records relationship with your city revenue department. The merchant survey requires staff time and consistent execution across multiple quarters.

But the reporting you present is the picture you give your stakeholders of how your corridor is actually doing. If that picture is incomplete — if it shows only the floor of corridor health and not the ceiling — you are doing your merchants, your property owners, and your city partners a disservice. They are making decisions based on your data. Those decisions should be based on the most accurate picture you can provide.

The Bayview story is a cautionary illustration of what happens when the gap between official vacancy and economic reality is allowed to persist unchallenged. The corridor looks fine on the metric everyone cites. The economic activity tells a completely different story. And by the time the story becomes visible in the vacancy data, the underlying cause is years in the past and substantially harder to address.

Measure what matters. Report what you find.