The US housing market has more listings but fewer completed sales than a year ago, putting fresh pressure on agents to make their marketing dollars count. Existing-home sales rose 1.5% in September but remained 2.2% below September 2025, according to figures released October 13. Inventory reached 1.60 million homes, up 4.6% year over year.
Open houses can generate leads, attract neighborhood interest, and support a seller's marketing plan. But a busy event isn't necessarily a profitable one. Agents need to weigh their costs against qualified prospects and eventual closings before deciding whether to host another.
How to calculate open house ROI
Start with the cost of hosting, including advertising, materials, travel, and the estimated value of preparation, hosting, and follow-up time.
Then calculate the return:
ROI = (Attributed net commission − event cost) ÷ event cost × 100
Gross commission income (GCI) is calculated before brokerage splits and expenses. Use retained commission after transaction deductions to measure profitability, without counting event costs twice.
Not every benefit appears on a commission statement, though. Open houses can reveal buyer objections, pricing concerns, or presentation issues that help sellers make decisions, even without generating a new client.
How to track open house leads
A sign-in sheet records attendance, but an ROI worksheet tracks what happens afterward. Agents can use open house apps to capture visitor information and organize follow-up activity.
Record these details for every event:
- Date, property address, and total cost
- Visitors, sign-ins, and verified contacts
- Buyer status, timeline, and communication permissions
- First-contact date and follow-up channel
- Appointments booked and clients acquired
- Closed transactions and attributed commission
Three calculations help measure performance:
| Metric | Formula |
|---|---|
| Cost per valid lead | Event cost ÷ verified contacts |
| Cost per appointment | Event cost ÷ appointments |
| Event ROI | (Attributed net commission − event cost) ÷ event cost × 100 |
Consider a hypothetical $750 open house with 15 sign-ins, 12 valid contacts, and two appointments. One previously unconnected visitor eventually becomes a client and closes a transaction, producing $6,000 in retained commission attributable to the event.
Cost per valid lead is $62.50, cost per appointment is $375, and ROI is 700%, assuming the $750 covers all event costs. It's a strong result, but one event doesn't establish a reliable average.
How to tell if an open house pays off
Few verified contacts may signal registration problems. Plenty of contacts but few appointments could indicate weak qualification or follow-up. If appointments aren't producing closings, examine lead quality and buying timelines.
Compare events by neighborhood, price range, and property type, then benchmark acquisition costs against other prospecting channels.
The 2026 NAR Member Profile found that the typical REALTOR earned 28% of their 2025 business from repeat clients and another 22% from past-client referrals. Open houses should earn their place alongside those established sources, rather than being judged by turnout alone.
How to follow up with open house leads
An open house doesn't end when visitors leave. Record outreach timing, responses, and appointments. The Close's open house follow-up templates offer practical ways to tailor messages to buyer interest and timelines.
Registration and representation are separate matters. Under NAR's open-house guidance, independent visitors generally don't need buyer agreements simply to tour a property, although state rules may differ.
Commercial emails must comply with the FTC's CAN-SPAM requirements. Certain automated calls and texts are also subject to federal rules governing consent withdrawal and opt-out requests. Agents should use brokerage-approved procedures for marketing outreach.
How long should agents track open house leads?
A visitor may not become a client for months, making a 30-day tracking window too short for some markets. Consider a 12-month review period, adjusted to local sales cycles, and assign each closing to one defined lead source.
Review your last three to five events before changing the process. If results are weak, test stronger registration, better follow-up, or a different listing strategy. These open house marketing ideas offer additional approaches to try.
Open houses don't have to generate an immediate sale to be worthwhile. Their value becomes clearer when agents measure what each event costs and the business it eventually brings in.