Speed to Lead in Real Estate: What the Research Actually Says

Speed to lead in real estate is the time between a buyer or seller submitting an inquiry and your first live contact. The research behind it says to call within minutes: a 2007 InsideSales.com and MIT study found contact odds dropped sharply after five minutes. That study measured phone contact with web leads at six companies, not real estate closings, so use it as direction rather than a promise.

Almost every article on this topic repeats the same three or four numbers with a different label each time: “the Harvard study,” “the MIT study,” a percentage lift for calling in under a minute. Below is where each one actually comes from, what it measured, and how to build a response setup around it. For what happens after the first call, see our real estate lead follow-up cadence by lead type.

Where does the “call within 5 minutes” rule come from?

The five-minute rule comes from the Lead Response Management study, presented on October 16, 2007 at MarketingSherpa’s B2B Demand Generation Summit by Dave Elkington, CEO of InsideSales.com, and James Oldroyd, then a faculty fellow at MIT’s Sloan School. The original web page is gone, but a 2008 printout of the study page, hosted by the mortgage software firm Mortech, preserves it.

Here is what the study actually did:

• Data: three years of records from six companies that generate and respond to web leads, covering more than 15,000 leads and more than 100,000 call attempts, all logged in the InsideSales.com system.
• Channel: phone calls only. No texts or emails.
• Outcomes: “contact” (a call that reached a live person and lasted a minimum length each company set, from 2 to 6 minutes) and “qualify” (the lead agreed to enter the sales process, defined differently by each company).
• Headline findings: the odds of contacting a lead called within 5 minutes, versus 30 minutes, were 100 times higher. The odds of qualifying were 21 times higher. Going from 5 to 10 minutes alone cut the odds of contact by 5 times.
• What it skipped: the study says plainly that it “did not address close ratios.”

It also reported that Wednesday and Thursday were the best days to call and 4 to 6 p.m. the best time to reach people, and that after 20 hours, extra dials seemed to hurt rather than help.

What did the Harvard speed to lead study actually find?

The “Harvard study” is a March 2011 Harvard Business Review article, The Short Life of Online Sales Leads, by James Oldroyd, Kristina McElheran and David Elkington. Harvard publishes the magazine; the authors were at Sungkyunkwan University, the University of Toronto and InsideSales.com, not Harvard. The article reported two pieces of research.

Part of the HBR article	What it measured	Main finding
Response audit	How long 2,241 U.S. companies took to answer a test web lead	37% responded within an hour, 24% took more than 24 hours and 23% never responded; the average was 42 hours among firms that replied within 30 days
Lead decay study	1.25 million leads at 29 B2C and 13 B2B U.S. companies	Firms that tried to contact a lead within an hour were nearly 7 times as likely to qualify it as firms that tried an hour later, and more than 60 times as likely as firms that waited 24 hours or more

“Qualify” here meant having a meaningful conversation with a key decision maker. The article doesn’t mention five minutes at all, and it doesn’t single out real estate: the industries it mentions include autos, software, health care, financial services and professional services.

Which speed to lead statistics can you trust?

The two studies above are the only primary sources behind the classic speed-to-lead claims, and both carry caveats. Both involved InsideSales.com, which sold lead response software. Both measured early-funnel outcomes, contact and qualification, not signed buyer agreements or closings. And both used “odds,” which is not the same as “you will close 21 times more deals.”

Other figures you’ll see, including a “391%” conversion lift for calling within a minute, are usually credited to Harvard or MIT. We couldn’t find an original publication with a method for them, so we don’t repeat them. If an article can’t link to the study, don’t put the number in your listing presentation.

The best real estate-specific evidence is newer and simpler. Zillow’s 2025 Consumer Housing Trends Report for agents, released in December 2025, found that 47% of buyers and 59% of sellers hired the first agent they spoke with. Zillow sells leads and owns the Follow Up Boss CRM, so it has a stake in the message. Still, “the first agent they spoke with” is exactly what speed to lead tries to win. For more sourced numbers, see our real estate lead generation statistics.

What is the average real estate lead response time?

No current, independent study measures the average real estate lead response time. Vendor reports exist, but they measure their own customers and rarely publish a method. The cross-industry benchmark from the 2011 HBR audit, 42 hours on average, is fifteen years old.

The useful number is your own. Most CRMs log when a lead was created and when the first call or text went out. Pull the last 90 days, work out the median gap for each lead source, and look separately at leads that arrived after 6 p.m. and on weekends. That’s usually where the hours pile up.

How do you set up fast lead response without living on your phone?

Fast lead response comes from routing and alerts, not willpower. Set it up once, then test it monthly by submitting a lead yourself.

1. Send every source into one place. Portal, website, open house sign-in and ad leads should all land in your CRM, not in five inboxes. Our guide to real estate marketing automation covers the plumbing.
2. Turn on a push alert that rings. A phone notification with the lead’s name, source and the property they asked about, plus a one-tap call button.
3. Route by availability. On a team, use round-robin or first-to-claim with a time limit, and reassign any lead not called within a set window. Solo agents can route after-hours leads to an assistant or inside sales agent (ISA).
4. Call first, then text. Call immediately. If there’s no answer, send a short personal text that names the property and gives one reason to reply.
5. Log the attempt. The call, text and outcome go in the CRM so the follow-up plan starts on its own.

When does an AI assistant help speed to lead, and when does it burn leads?

An AI assistant helps when it confirms an inquiry instantly and books a time to talk with you. It burns leads when it pretends to be you, answers questions it shouldn’t, or keeps messaging people who never agreed to automated contact.

The rules matter here. In a February 2024 declaratory ruling, the FCC confirmed that AI-generated voices are “artificial” under the Telephone Consumer Protection Act (TCPA), so those calls need the called party’s prior express consent. Where the call is telemarketing, the FCC’s rules require prior express written consent. The FCC’s TCPA rules in 47 CFR 64.1200 also limit telephone solicitations to between 8 a.m. and 9 p.m. local time, apply Do Not Call rules to marketing texts sent to cell phones, and treat replies such as “stop,” “quit” or “unsubscribe” as a revoked consent.

A lead who just asked you about a home is in a different position from a cold number, but how much room that gives you depends on the tool, the wording on your form and your state’s law. Check with your broker or a lawyer before you turn on automated texting or AI calling. This is general information, not legal advice.

What should touch two and three say after you make contact?

After first contact, touch two and three need substance, or the lead goes quiet. A buyer who asked about one house wants to know about the next three like it, what sold nearby and what the process will cost them. Send those, not “just checking in.”

Some agents also send something with their own voice in it: a short video tour, a market update, or a podcast episode where they explain how offers are working locally. If you’d rather not edit and publish that yourself, you can have Icons produce a short podcast so your second and third follow-up touches have something worth sending. Whatever you send, the first call still matters most. If you’re paying for portal leads, our guide on whether buying real estate leads is worth it shows how response speed changes your cost per closing.