Source-to-signed: the only marketing attribution that matters in home improvement

Every owner in home improvement I speak to can quote their cost per lead. Almost none of them can quote their cost per signed job, by source. That asymmetry is, in plain terms, the reason most home improvement marketing budgets are quietly leaking five-figure sums every month.

This post is about how to fix that — what to measure, why, and how to wire it up properly without overengineering it.

Why cost per lead is the wrong metric

Cost per lead optimises for volume, not revenue. A campaign that produces 200 leads at £8 each looks better than one that produces 80 leads at £20 each, on the only number most agencies are asked about.

But of those 200 leads, perhaps 8 turn into signed jobs at £4,500. Of the 80 leads, perhaps 16 turn into signed jobs at £4,500. The £8 campaign produces £36,000 of signed revenue at a cost of £1,600. The £20 campaign produces £72,000 of signed revenue at a cost of £1,600. Same spend, twice the revenue, half the close rate, double the headache for the team.

If you optimise for cost per lead, you scale the wrong campaign every single time.

What to measure instead

There are four numbers that matter, in this order:

1. Cost per quote. Every signed job is downstream of a quote. If a campaign produces a high quote rate, it is producing real demand. If it produces leads but no quotes, it is producing tyre-kickers.
2. Cost per signed job. The only number an owner should care about. By campaign, by channel, by landing page.
3. Average signed job value, by source. Sources are not equal. Local Meta produces £3,000 jobs; Google search for "bifold doors Surrey" produces £14,000 jobs. The average matters as much as the count.
4. Time from enquiry to signed job, by source. A source with a fast cycle is worth more than a source with a long one, because cashflow.

If you can quote those four numbers, by channel, last month, you are operating on a different plane to most of your competitors.

What it takes to wire it up

The mechanic is not complicated. It is just rarely done in home improvement, because the systems were not built for it.

You need three things.

A unique tagged source on every enquiry. Not "web", not "Google" — the specific campaign or landing page. A UTM-tagged URL handed to the form, a unique phone number for the call, a unique email address for the social profile, a unique form for the showroom walk-in.

A pipeline that records the sale event with the source attached. When the deposit lands, the source field on the contact has to still be there — and the deposit value has to be on the same record. This is where most CRMs fail in practice, because the source gets lost between enquiry and quote.

Reporting that joins the cost data to the revenue data. You need to be able to ask, in a single view, "what did we spend on Meta last month, and what did we sign from Meta last month?" Most home improvement businesses have those two numbers in two different tools, never reconciled.

The honest reason most businesses do not have this

The reason is not technical. It is that nobody owns the wiring. The agency owns the front of the funnel and reports cost per lead. The CRM owns the middle and reports pipeline. The accountant owns the back and reports revenue. Nobody joins them up.

A Conversion Operating System joins them up. That is, in plain terms, what LeadCentre OS does — every enquiry source-tagged, every quote attributed, every signed job traceable back to the campaign and landing page that produced it. Not in three reports — in one dashboard, owner-readable in 30 seconds.

The action

You do not need to install a Conversion Operating System this afternoon. But you should, this week, sit down with your last 12 signed jobs and ask, for each one: which campaign produced this? If you can answer for fewer than 8 of them, you have a marketing attribution problem that is silently costing you four-figure sums a month — and probably more.

The fastest way to put a number on it is to run the Revenue Recovery Audit. Or, if you would rather have the conversation directly, book a Discovery Call — we will walk you through your numbers in 30 minutes, and tell you straight whether a Conversion Operating System would help.