Minimum Call Length for Billable Calls: 30, 60 or 90 Seconds?

A minimum call length is the shortest call a vendor will bill you for. Programs commonly use 30, 60 or 90 seconds. A short threshold bills more calls and lets in more junk. A long one filters harder but can skip short real conversations. RankLocal bills qualifying exclusive inbound calls that run over 60 seconds.

The threshold feeds straight into your cost per call, and cost per call feeds the math in the contractor lead cost per job guide. This page compares the three common thresholds so you know what you're agreeing to when a vendor quotes one. For the definition of a billable call itself, see what is a billable call.

What the threshold is really doing

Pay-per-call needs a rule for when a call becomes a charge. Something has to separate a homeowner who described a problem from a misdial, a hang-up, a voicemail greeting or a wrong number. Duration is the simplest signal to measure. A system can time a call without listening to it.

That simplicity is the appeal, and it's also the limit. Duration says that two people stayed on the line. It doesn't say they discussed a roof. Most programs add other rules: the caller has to be a homeowner, in your service area, asking about your trade. Length is the first gate, and qualification rules do the rest.

30 seconds

A 30-second minimum is the most permissive of the three.

What it catches well: Short but real calls. A homeowner who says "Do you do gutter cleaning in Dayton? Great, can someone come Thursday?" can be done in under a minute.

What it lets through: - Voicemail pickups and long greetings, since an automated message can run past 30 seconds. - Callers who ask a single question about price, hear it, and leave. - Wrong numbers where both sides spend a while sorting it out.

Who it favors: The seller, mostly, since more calls cross the line. For a buyer, it can lower the cost per call while raising the share of calls that never become an estimate. A cheap call that doesn't convert still costs you the full price.

60 seconds

A 60-second minimum sits in the middle, and it's the one RankLocal uses: calls over 60 seconds are billable.

What it catches well: A real exchange. Introductions, the job description, the address or neighborhood and a next step usually fit in a minute or more, so the typical genuine inquiry crosses the line.

What it filters out: Most hang-ups, misdials, brief wrong-number conversations and one-question price checks. It's also long enough that a short automated greeting won't clear it on its own.

Where it can miss: A caller who knows exactly what they want and is quick about it can finish in under a minute. That's a real cost of any threshold. It's the price of keeping the billable pool cleaner.

One minute is also a number buyers can reason about. When you review recordings, you can hear in a few seconds whether a 65-second call was a conversation or noise.

90 seconds

A 90-second minimum is the strictest.

What it catches well: Calls where the caller and your staff talked through the scope of the job. Longer calls are more likely to include the questions that lead to a booked estimate.

What it filters out: Nearly all short junk, along with a larger slice of genuine quick calls.

Where it hurts: If your team is efficient on the phone, you may handle complete inquiries and book appointments in under 90 seconds. Those calls don't count, and the vendor's volume numbers shrink. For a buyer, a longer minimum means fewer billable calls for the same traffic, so you should expect either a higher price per billable call or lower volume.

Side by side

The pricing row is a general pattern, not a promise from any vendor. Compare quotes on cost per billable call at the stated minimum, then on cost per booked estimate.

An illustrative example

These numbers are hypothetical, so use them as a pattern for your own math.

Say a campaign sends 100 inbound calls with this length mix:

How many calls bill under each rule:

At $50 per billable call, the charges would be $4,250, $3,500 and $2,250. The 30-second rule costs $750 more than the 60-second rule on this traffic ($4,250 minus $3,500). Is that extra $750 buying anything? It buys 15 more billable calls that ran between 30 and 60 seconds. If they book estimates at the same rate as longer calls, great. If those calls are mostly hang-ups and price checks, you paid $50 each for noise.

So test it. Listen to 20 calls in the 30 to 60 second band. Count how many were a real inquiry. If only 2 of 20 were, you've seen what a 30-second threshold would add: about 10% usable calls at full price.

What length can't tell you

Duration is blind to several things, and each is worth checking separately.

• Fit. A long call from someone outside your service area is still a wasted call. Ask what qualification rules apply on top of length.
• Intent. A homeowner who is gathering information for next year and a homeowner whose water heater just failed both talk for two minutes.
• Repeat callers. The same number calling again shouldn't bill again inside a set period. See what is duplicate caller filtering.
• Manipulated calls. Padded or staged calls can run long on purpose. Duration alone is a weak defense, which is why how to spot fake pay-per-call leads is worth reading before you scale spend.

If a billed call looks wrong, the vendor's credit rules matter more than the threshold. Pay-per-call dispute and credit policy explained covers what should qualify.

Which threshold fits your shop

Use the work you do and the way your phones are answered.

1. Emergency trades (plumbing, HVAC, garage door). Calls can be short and urgent. A lower threshold may suit you, but you need stronger qualification to keep noise out.
2. Project trades (roofing, fencing, landscaping installs). Real inquiries usually involve a longer conversation about scope, so 60 seconds or more tends to fit.
3. Quick-answer front desks. If your team books calls fast, a very long minimum may skip your best conversations.
4. Slow or distracted front desks. Long calls may reflect hold time and fumbling, not interest. Length is partly a measure of your own team.

Whatever you pick, check it against your own data. Record 30 calls from a new source, label each one real inquiry or not, and note its length. Then see which threshold would have kept the real inquiries and dropped the rest. If you don't record calls yet, call tracking for contractors covers the setup. Recording laws vary by state, so get general information and consult an attorney before you record.

Why 60 seconds works as RankLocal's rule

A 60-second rule gives a buyer a simple, auditable line. Calls over 60 seconds are billable and calls under it aren't. The cutoff is long enough to screen out most hang-ups and wrong numbers, and short enough that normal homeowner inquiries clear it. You can verify it from a call log without taking anyone's word for it.

Combined with exclusive inbound calls from homeowners, where you pay only for qualifying calls, it gives you a cost per call you can then divide by booked estimates and signed jobs. How does pay-per-call work explains the full flow, and the attribution window decides how long a billable call can earn credit for a sale.

If you want to see how this plays out on your own phones, apply here.

Frequently asked questions

What is the minimum call length for a billable call at RankLocal?

RankLocal bills qualifying exclusive inbound calls that run over 60 seconds. Calls that end before that mark aren't billable.

Why do some pay-per-call programs use 30 seconds and others 90?

Each threshold is a trade-off. A short minimum bills more calls but lets in more wrong numbers and hang-ups, and a long minimum filters harder but can skip real short conversations.

Does a longer call always mean a better lead?

No. Length is a rough proxy for a real conversation, and it can't tell you whether the caller wanted your service or was in your area. That's why length works best alongside qualifying rules.

Should I choose a billable threshold by trade?

It can help. Emergency trades often have shorter, faster calls than roofing or remodeling, so check a sample of your own calls before you accept any threshold.