Key takeaways
- Paper sign-in sheets collect bad data and no consent.
- A QR code to the home's payment gives visitors a reason to scan.
- Pre-fill the calculator with this home's price, taxes and HOA.
- Record consent that covers texts if you'll text.
- Follow up the next morning with their payment, not 'thanks for stopping by'.
The paper sign-in sheet has three problems. Visitors write fake names or unreadable emails. It records no consent for the texts you’ll want to send. And when you follow up, you have nothing to say beyond “thanks for stopping by.”
A QR code that opens the payment calculator for the home solves all three. Visitors scan because they want the answer, they type their own details on their own phone, and the lead arrives with the payment they tested. Here’s how to set it up.
Why would visitors scan a QR code?
Because it answers the question every visitor is quietly asking as they walk through: could we afford this? Most won’t ask you directly in front of other visitors. A card on the kitchen island that says “What would the payment be? Scan to see.” lets them find out privately, right there.
Compare that with what a sign-in sheet offers visitors: nothing. It’s purely for you. People are much more willing to share details in exchange for something useful.
Setting up the calculator
- Create a configuration for the property with the mortgage calculator: list price, actual annual taxes, HOA dues and a realistic insurance estimate.
- Copy its direct link. Direct links open the calculator full-page on a phone, which is ideal for QR codes.
- Add a UTM tag to the link, such as
?utm_source=open-house&utm_campaign=18-willow, so leads show which event they came from. - Make the QR code with any QR generator, and test it on an iPhone and an Android phone.
- Submit a test lead yourself to see what arrives and confirm your consent wording.
If the home has a feature that changes the math, such as a seller credit or an accessory unit, consider a second card with the right calculator, or a widget with tabs.
Signage copy that gets scanned
Short, specific and about the visitor’s question:
| Weak | Strong |
|---|---|
| “Scan for more info” | “What would the payment be? Scan to see.” |
| “Sign in here” | “Run the numbers on this home in 30 seconds.” |
| “Contact us” | “Thinking of selling yours? See your net.” |
Put the price on the same card as the QR code. It reminds visitors what they’re calculating and makes the scan feel relevant.
Where to put the cards
Where people pause: the kitchen island, the dining table, a primary bedroom window seat, the sign-in table. Avoid the front door, where people are still taking in the home. Two or three cards are enough. A dozen looks like a sales pitch.
Consent: get it right before you text
If you plan to text visitors, the consent checkbox on the lead form must cover texts, clearly and in plain language. Under the TCPA, marketing texts sent with automated systems generally require prior express written consent. (The FCC’s “one-to-one” consent rule was vacated by the Eleventh Circuit in January 2025, but the underlying requirements remain.) Store the consent with the lead, and follow your brokerage’s policy. This isn’t legal advice. Our compliance guide goes deeper.
The next-morning follow-up
Open-house leads go cold quickly. Send your first message the next morning, and make it about their numbers:
“Thanks for coming by 18 Willow yesterday. You looked at about $3,050 a month with 10% down. Two homes nearby land in the same range. Want me to send them, or set up a second look at Willow?”
Then:
- Same day: send those two or three homes, sorted by payment.
- Within a week: offer a buyer consultation. Many visitors haven’t signed a buyer agreement with anyone yet.
- Ongoing: add them to a nurture sequence for their price range.
If you have several open houses a month, a CRM workflow triggered by a webhook can tag leads by event and send the first message automatically, with consent.
What about neighbors?
Neighbors visit open houses to see what their own home might be worth. Give them something useful: a second card with the seller net sheet, with copy like “Thinking of selling yours? See your estimated net.” The lead arrives with their expected price and payoff, which makes for an easy, specific follow-up.
Renters and first-time buyers
Many open-house visitors are renters testing the waters. For them, the payment can feel abstract. A card linking to rent vs. buy or the first-time homebuyer calculator speaks to where they actually are. You won’t get a tour this week, but you’ll get a future buyer who remembers you.
Measuring the results
Compare a few weekends: sign-in sheet only versus QR code plus sheet. Look at the number of usable leads (real email or phone, with consent), how many replied to the first follow-up, and how many became consultations. The UTM tags make it easy to see which events and cards performed.
A checklist for your next open house
- Calculator configured with the property’s price, taxes and HOA
- Direct link with UTM tags, tested on two phones
- Two or three cards with strong copy and the price
- A seller net sheet card for neighbors (Brokerage plan)
- Consent wording that covers how you’ll follow up
- Next-morning follow-up drafted in advance
The QR code won’t replace talking to people. It makes sure the people you don’t get to talk to still leave something behind, and that what they leave is useful.
Tags: Open houses, Qr codes, Follow up, TCPA, Buyer leads
CalcCapture Product Team · How-tos for embedding, lead capture and integrations
The Product Team writes CalcCapture's how-to guides on embedding calculators, lead capture and sending leads into CRMs like HighLevel.
This guide is general information for agents, not legal, tax or lending advice. Calculator figures are estimates.