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Speed to Lead: The Numbers Every Agent Quotes (and Where They Come From)
Where the famous speed-to-lead statistics come from — the 21× and 100× study, the HBR hour research, response-time audits — and why leads decay so fast.
2026-07-04 · 6 min read
Every real-estate conference has a slide with a 21× on it. Almost nobody in the room can say where the number came from, what it measured, or what it didn't. This is the sourcing behind the speed-to-lead statistics agents quote — what each study actually found, where the figures get stretched in the retelling, and why lead value decays this fast in the first place.
The 21× and the 100×: the Lead Response Management study
The most-quoted numbers in lead follow-up come from the Lead Response Management study, research led by Dr. James Oldroyd and published through InsideSales.com in 2007. It analyzed years of real call logs — millions of dial attempts against web-generated leads — and measured two different things that constantly get blended together in the retelling:
| What was measured | 5 minutes vs. 30 minutes |
|---|---|
| Odds of contacting the lead (reaching a live person) | ~100× higher |
| Odds of qualifying the lead (a real conversation about their need) | ~21× higher |
Two clarifications worth carrying around, because this study is misquoted more often than it's quoted:
- 21× is about qualifying, not closing. The study measured whether a lead entered a real sales conversation, not whether the deal closed. Anyone telling you a five-minute response makes you "21× more likely to close" has added a step the data never took.
- It wasn't a real-estate study. The call logs came from companies responding to web leads across industries. The mechanism transfers cleanly to portal inquiries — a web lead is a web lead — but the decimals are borrowed, not native.
The steepest finding is the one that gets the least airtime: the odds don't decline gently. They fall off a cliff inside the first half hour and keep sliding from there. The difference between minute 5 and minute 30 is bigger than the difference between hour 1 and day 1.
The HBR audit: ~7× inside the hour, and almost nobody makes it
In 2011, Harvard Business Review published "The Short Life of Online Sales Leads" — Oldroyd again, with colleagues, this time auditing how 2,241 U.S. companies actually responded to a test web lead. Two findings matter for agents:
- Firms that attempted contact within an hour were roughly 7× as likely to qualify the lead — to have a meaningful conversation with the decision maker — as firms that waited even an hour longer.
- Most companies were nowhere close. Only about 37% responded within the hour; the average response among companies that answered at all was measured in days, not minutes, and roughly a quarter never responded.
Again: corporate sales data, not real estate. Its value is scale — it's the best large-sample look at the gap between what organizations know about response time and what they actually do.
What real-estate audits keep finding
Real estate has its own version of the HBR audit: secret-shopper studies that submit inquiries on real listings and time the responses. The most-cited, WAV Group's 2014 buyer-inquiry study, reported an average response time of over 15 hours — and found that roughly half of inquiries never received a response at all. Smaller audits since have varied in their exact figures, but the shape never changes: average response measured in hours, and a meaningful share of paid-for inquiries that die in silence.
Read those two facts together and the strategic picture appears: the research says the lead is most alive for five minutes, and the audits say the average competitor shows up half a day later — if at all. The five-minute bar isn't just valuable. It's largely uncontested.
Numbers to be careful with
A stats roundup should also flag the stats that don't check out.
- "78% of buyers work with the first agent who responds." Widely repeated, and we have never been able to trace it to a primary source. Treat it as folklore. The defensible neighbor is real, though: NAR's Profile of Home Buyers and Sellers has found year after year that a majority of buyers interview only one agent — so the first real conversation tends to be the only one.
- Anything with decimal precision about closings. No public study links response time to closed real-estate transactions at scale. The honest claim is directional: faster response → dramatically more contact and qualification → more of everything downstream.
Why decay happens
The numbers are less mysterious once you picture the person behind the inquiry.
- The phone-in-hand moment. A portal inquiry is someone actively looking at a house, right now. Five minutes later they're still in the app; five hours later the moment is archaeological.
- Parallel inquiries. Nothing stops a buyer from tapping the button on four listings. Whoever answers first is returning a call; everyone after that is interrupting.
- First-responder trust. The first useful answer sets the anchor. Later agents aren't compared on merit — they're compared to a relationship that has already started.
- Memory decay. By the next day, many inquirers genuinely don't remember which listing — or which agent — they contacted.
- Screening. A call from an unknown number minutes after an inquiry gets answered. The same call two days later gets screened as spam.
None of this is about enthusiasm cooling. It's about a window closing.
How to use these numbers honestly
Quote the direction, not the decimals. Attribute the 21×/100× to the Lead Response Management study and the ~7× to HBR, and say plainly that they're sales-response research applied to real estate. Then measure the only number you fully control: your own median minutes to first contact. For a solo agent, getting it under five minutes is a systems problem, not a willpower problem — the inquiry has to be seen instantly, the first reply has to be mostly pre-written, and the follow-up has to be scheduled by something other than memory.
That systems problem is the one Marshal was built for: portal inquiries land in your Gmail, where Marshal captures them, builds the client record on its own, and drafts a reply from the actual thread for you to approve — and its AI calling can place the first call and book the appointment straight onto your Google Calendar. For the full playbook, see our page on speed to lead in real estate; to put a dollar figure on your current response time, run the speed-to-lead calculator; and if your leads come from Zillow specifically, the first-hour Zillow playbook turns these statistics into scripts.