Qualifying plumbing leads on the phone: 7 questions that save you a truck roll

Every unqualified truck roll costs you the gas, the hour of labor, and the next customer you couldn’t get to. Getting qualification right on the phone is the single highest-leverage thing a plumbing shop does every day. Here are the seven questions that actually work.

Why most shops under-qualify

The common failure mode is asking “what’s going on?” and booking the job as soon as the caller says something plumbing-adjacent. That’s how you end up driving to Riverside for a $40 hose-bib washer replacement while a $3,000 water heater job in Santa Ana goes to a competitor.

Under-qualification happens because:

• The owner is exhausted and wants to end the call.
• A cheap answering service doesn’t know what to ask.
• Software pricing sheets don’t map to real conditions on site.

The fix is a short, mandatory qualification script on every inbound call.

The 7 questions

Ask all seven, in order, on every call. Even for repeat customers.

1. “What address is the work at?”

First question. Not third. It sets the tone, filters obvious non-customers (a caller who won’t give an address is almost never going to book), and gives you your service-area check.

If the address is outside your service area, be honest: “We don’t cover that area. The closest shop I’d call would be X.” Earn the referral trust for later.

2. “Is the water on or off right now?”

This one question tells you more about urgency than any other. If the main is off, the caller has already triaged. If the water is still running and a pipe is broken, it’s emergency, now.

3. “How long has this been happening?”

A leak that started 4 hours ago is usually real. A leak that started 4 weeks ago is usually a callback-ready customer who’s been thinking about it. Prioritize the first.

4. “What’s the age of the house?”

Critical for SoCal markets. A 1920s Pasadena Craftsman has galvanized pipes. A 2015 Irvine tract home has PEX. Your diagnosis and your truck stocking change depending on the answer. Also, older homes mean potentially bigger jobs — galvanized repipe budgets are $8,000-$15,000, which changes the way you schedule.

5. “Have you had any plumbing work done recently?”

This catches warranty calls, bad prior work, and chronic conditions. A caller who had a water heater replaced 6 weeks ago and now has a leak is either a warranty call (not billable) or a separate issue (billable). Know which before you drive.

6. “What’s making you call today versus next week?”

Reveals the actual urgency. A customer saying “I’m selling the house on Friday” is different from “it’s been annoying me.” Adjust your booking window and your pricing.

7. “What’s your budget range, if you have one in mind?”

This question scares some plumbers. It shouldn’t. Customers who have a number tell you, and that number is how you know whether you’re pitching a $200 spot fix or a $4,000 repipe. Customers without a number will say “whatever it takes to fix it,” which is also useful.

The questions you don’t ask

• “What’s wrong?” is too vague — you’ll get 10 minutes of story. Replace with “what’s the address and is the water on?” and let the story come out naturally after.
• “When was it inspected?” is a red flag for most callers — they get defensive. Ask about the age of the house instead.
• “Have you tried Googling it?” is never, ever the right line on a call.

How to make this stick across your team

A script only works if everyone uses it. Two disciplines:

• Tape it to the dashboard of every truck. Literally. Print the 7 questions on a 3×5 card.
• Review one call per week as a team. Pull a random call recording, listen as a group, and grade it against the 7 questions. The whole team gets sharper in a month.

If you use an AI receptionist, these 7 questions should be the backbone of her script. Ours are. You can hear them in action on the demo line — ask her anything plumbing-related and notice how the first thing she does is ask about the address.

What to do with the qualified info

Once you have the 7 answers, the call-booking decision becomes mechanical:

• Emergency + in service area + water on + high-risk damage: transfer to cell.
• Emergency + in service area + water off + contained damage: book same-day window.
• Routine + in service area + caller has timeline: book standard window.
• Routine + outside service area: refer to a neighbor shop and save the customer’s goodwill.
• Unclear / caller evasive: book a paid diagnostic visit, not a free estimate. Callers who won’t give you enough info to diagnose are rarely profitable work.

Automating the flow

The reason AI receptionists beat cheap human answering services isn’t voice quality — it’s consistency. A human receptionist will skip questions when they’re tired. A well-configured AI will not. That’s the real moat.

If you run a human receptionist, great — keep the script taped up. If you run an AI, make sure her prompt includes these 7 as non-skippable.

Bottom line

Seven questions, 60 seconds on the phone, and your close rate jumps 5-10 points while your wasted truck rolls drop by half. It’s the cheapest upgrade in your shop.

Go test your own call flow. Call your own business line and pretend to be a customer. See how many of the 7 get asked. The honest count is usually 2 or 3. Fix that this week.

Hear her answer a call.

30 seconds on the demo line tells you more than another 1,500 words here.

Call the demo line →