All case studies
Google Ads

18.8% more conversions for a plumbing business, at 21.2% lower cost per conversion

How a home services brand got 12 more leads in 30 days while spending less on Google Ads.

Industry
Home services (plumbing)
Platform
Google Ads
Campaign type
Search
Period
Aug 10 to Oct 8, 2026 (two 30-day periods)
Ad Spend
$4,607.79 (latest 30 days)

About the client

A plumbing business offering home services, using Google Search ads to win calls and form leads from local customers.

The challenge

The account was bringing in leads, but each one cost close to $77. Part of the budget went to clicks and searches that did not turn into calls or form submissions.

The goal

Get more calls and form leads from Google Ads while lowering the cost of each one.

What we did

  1. Cleaned up the search terms

    Added negative keywords to stop spend on searches that never turned into jobs.

  2. Focused budget on the main lead campaign

    Paused the campaigns that were not converting and put the budget behind the Leads Search campaign.

  3. Tracked every lead

    Counted calls from ads, calls from the website and form submissions as conversions, so the account could optimise for real enquiries.

Results

+18.8%
Conversions (64 to 76)
-21.2%
Cost per conversion
$60.63
Cost per conversion
14.37%
Conversion rate
11.59%
Click-through rate
Previous 30 days compared with the latest 30 days
MetricPrevious 30 daysLatest 30 daysChange
Conversions6476+18.8%
Cost per conversion$76.93$60.63-21.2%
Ad spend$4.92K$4,607.79about -6.3%
Clicks557529-5.0%

Proof

Results summary: 18.8% more conversions, $60.63 cost per conversion, 76 conversions, 14.37% conversion rate, 21.2% lower cost per lead
Results summary
Google Ads overview, latest 30 days: 529 clicks, 76 conversions, $60.63 cost per conversion, $4.61K cost
Latest 30 days: 76 conversions at $60.63 each
Google Ads overview, previous 30 days: 557 clicks, 64 conversions, $76.93 cost per conversion, $4.92K cost
Previous 30 days: 64 conversions at $76.93 each
Google Ads campaigns table, Sept 9 to Oct 8, 2026: 529 clicks, $4,607.79 cost, 76 conversions, 14.37% conversion rate, 11.59% CTR, $60.63 per conversion, with calls from ads and form submissions
Campaigns table: calls and form leads, Sept 9 to Oct 8, 2026

Key learnings

  • Fewer, better clicks beat more traffic. Clicks went down 5% while conversions went up 18.8%.
  • Tracking calls and forms as conversions helps Google find the searches that turn into real jobs.
  • Cutting wasted spend lowered the cost of each lead without lowering lead volume.

Want more calls and leads from the same Google Ads budget?

Book a free 30-minute strategy call. We'll review your ad account and show you what we'd change first.

Get a free ad account audit