THE SHORT ANSWER
A sudden drop in close rate is diagnosable. Check five things in order: your response time, the mix of job types and areas you are receiving, seasonal demand, whether the supplier changed anything, and whether your own capacity has quietly made you less willing to sell. Four of those five are usually on your side of the line, which is inconvenient but useful, because it means you can fix them.
First, confirm the drop is real
Close rate over a small number of leads is extremely noisy. Twelve leads and one sale looks like a collapse from 15 percent to 8 percent, and may be nothing at all. Compare a rolling thirty or fifty leads against the same window earlier, not this month against last month.
If you cannot pull that comparison, the underlying problem is measurement, and that is the first fix.
The five causes, in the order to check them
Response time. Pull the gap between lead received and first call attempt. This drifts silently when someone is on holiday or busier than usual, and it is the single largest factor.
Lead mix. Group leads by job type, postcode and budget band. A stable overall close rate can hide the fact that you are now receiving more of the segment you always converted badly.
Seasonality. Compare against the same period last year rather than last month. Some drops are the calendar, not you.
Supplier change. Ask directly whether the source mix, qualification questions or landing pages changed. They often did, and it is usually disclosed when asked.
Your own capacity. When teams are full, quotes get padded and follow-up gets skipped. Close rate falls for reasons that look external but are not.
The instrumentation that makes this a five-minute question
Three fields on every lead record answer almost all of it: source, timestamp of first contact attempt, and outcome with a stated reason. With those three, a drop in close rate becomes a query rather than an argument.
Without them you are relying on impressions, and impressions reliably blame the lead supplier because that is the only variable that feels external.
What to do while you diagnose
Do not cut volume first. Reducing leads while the cause is unknown removes the data you need and shrinks the pipeline you will want in six weeks. Hold volume, fix response time immediately since it costs nothing, and review the mix once you have thirty more leads on the record.
Related answers
Frequently asked questions
How many leads do I need before a close-rate drop is real?
Compare rolling windows of thirty to fifty leads. Under that, normal variation looks like a trend.
What is the most common cause of a sudden close-rate drop?
Response time drifting upwards, usually because of a staffing change or a busy period. It is also the cheapest to fix.
How do I tell whether the supplier changed something?
Ask directly, and compare the lead mix by job type, postcode and budget band against your earlier records. Mix shifts show up clearly.
Should I pause my lead purchases while I investigate?
Usually no. Pausing removes the data you need to diagnose and empties the pipeline you will want six weeks from now.
What should I record on every lead to make this diagnosable?
Source, timestamp of the first contact attempt, and outcome with a stated reason. Those three fields answer most close-rate questions.
NEED A CLEARER PLAN?
Let’s turn your next move into momentum.
Talk to us →