Why You Should Never Trust an Unverified Footfall Number

Almost every commercial listing carries a footfall claim, and almost none of them can be checked. An unverified footfall number — a figure with no disclosed method, no sampling window, no error bars and no way for a counterparty to test it — is not evidence; it is a hope written as a statistic. For a landlord or broker that hope is dangerous, because the tenant, the bank or the buyer you are trying to convince will eventually find out whether it was true, and by then the damage to the deal and your credibility is done. This guide explains where these numbers come from, why even sophisticated estimates go blind at street level, and what a verified count fixes.

Key takeaways

• An unverified footfall number has no disclosed method, sampling window, error bars, or way to check it — treat it as marketing, not measurement.
• Panel estimates are valuable at zone level but can go blind at the single-doorway resolution a lease actually depends on.
• Quoting a number you cannot defend transfers risk onto you: a tenant who finds the gap after signing remembers who told them.
• Verified footfall is a direct, per-unit count with method and margins disclosed behind a public QR seal.
• The safe move is to certify the number before you publish it, not to defend it afterward.

Where the numbers on listings come from

Trace an "excellent footfall" line back to its source and you usually find one of these:

• A guess. Somebody stood on the pavement, watched for a while, and rounded up. No record, no method, no repeatability.
• A clicker day. A person with a hand counter for a shift or two — better than a guess, but it captures a few daytime hours on a couple of days, never nights or weekends, and leaves no evidence trail. Hiring one runs roughly $120–200 a day and still produces a number nobody else can audit.
• A panel screenshot. A figure lifted from a mobile-location data platform. These are real products, but they are enterprise-priced (Placer runs into five figures a year; MyTraffic sells zone-level panel estimates on enterprise contracts) and, crucially, modelled rather than counted.

None of those is worthless, but none of them is checkable, and checkable is the whole game once money is on the line.

Where panel estimates go blind

This is the part landlords are rarely told. Mobile-panel footfall is built by taking a sample of location-enabled devices and modelling the wider population from it. That works well at the scale it was designed for — a catchment, a retail zone, a whole high street. It gets shaky at the scale a lease actually turns on: this unit, this side of the street, this doorway.

Two blind spots matter most:

1. Side-of-street resolution. A panel model often cannot cleanly separate the busy pavement from the quiet one a few metres across the road. For a tenant choosing a frontage, that difference is the entire decision — and the estimate may not see it.
2. Sample-to-reality gap. The model infers total traffic from a fraction of devices. Where the local sample is thin or skewed, the inference wobbles, and there is no ground-truth count to catch it. It is an estimate of an estimate.

Ground-truth counting — actually watching the pavement and counting each crossing — does not have those blind spots, because it is not inferring the street from a sample of phones; it is counting the street. That is the distinction between panel data and ground truth, and it is why a per-unit video count answers the question a lease asks and a zone-level panel figure often cannot. The accuracy science behind that claim is covered in footfall accuracy, MAPE and confidence intervals.

The real cost of an unverified footfall number

Suppose you list a unit at "12,000 pedestrians a day" because that felt right, or because a panel dashboard for the postcode said so. Consider what happens next:

• The sceptical tenant discounts it. Experienced operators have been burned before; a number they cannot check gets mentally halved, which erodes the very rent you were defending.
• The trusting tenant signs — and then measures. Once trading, they find the true flow. If it is materially lower, you have a resentful tenant, a shaky renewal, and a story that travels to other operators and brokers.
• You carry the risk. An unverified claim you made is a claim you own. A verified certificate transfers the question to a public method anyone can inspect — the risk moves off your desk.

The asymmetry is stark: a certificate costs $149, while a soured tenancy or a collapsed negotiation costs months. Framing that against the cost of vacancy is the theme of the Footfall Certificate guide.

What "verified" actually adds

Verified footfall is not just a bigger, shinier number — it is a different kind of number. It is a direct count of the specific unit, with four things an unverified claim never has: a disclosed method, a stated sampling window, error bars, and a public QR verification page anyone can scan. Those four turn a claim into an artifact a counterparty can audit before they commit. If you want to see precisely how to pressure-test any footfall figure — yours or a rival listing's — read how to audit a footfall claim before you list a space.

Note the deliberate honesty in that list: a verified certificate does not promise a single perfect number with no margin. It promises a count you can check and a margin you can see. A vendor claiming 99.5% accuracy with no evidence you can inspect is, ironically, giving you another unverified number.

The safe move

You do not have to win the argument about whether unverified numbers are ever right. You just have to notice that you cannot tell, and neither can your tenant — and that not being able to tell is itself the risk. The safe move is to certify the number before you publish it, so the first time anyone checks, it holds.

If you are a tenant reading this to protect yourself before signing, that is a different job with the same engine — StreetProof is built for the tenant side of the lease. If you are the landlord, broker or manager, see how a certificate is produced and run one from the pricing page — brokers, your first listing is $149.

Frequently asked questions

What makes a footfall number "unverified"? No disclosed method, no sampling window, no error bars and no way to check it. A round claim with nothing behind it is unverified by definition.

Aren't panel estimates reliable? They are useful at zone level but can go blind at single-doorway resolution, struggle to tell one side of a street from the other, and are modelled rather than directly counted.

What is the real risk of quoting one? A tenant who discovers the gap after signing remembers who told them; the claim you made is a risk you own, and it weakens your rent position.

How is verified footfall different? It is a direct, per-unit count with method, sampling and error bars disclosed behind a public QR page — auditable before anyone commits.