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Case study · Home services · Google Ads

+20% ROAS by cutting an account from 100+ keywords to 15

A high-spending home services advertiser had a bloated account bidding against itself. The fix wasn't more coverage, it was fewer keywords, in clear lanes.

Paid ads Account restructure Conversion tracking
Reviewing a Google Ads account
Trade
Home services
Starting point
100+ keywords
After
15 keywords
Headline result
+20% ROAS
The situation

An account bidding against itself

A high-spending home services advertiser had a bloated account: 100+ keywords on automated bidding, many of them overlapping. Multiple keywords were competing for the same searches, the account was essentially bidding against itself.

Google's automation was spreading budget across all of it, with no clear picture of what was actually driving revenue.

Before the restructure
Keywords100+
BiddingAutomated
Internal competitionHigh
Revenue visibilityNone
The insight
More keywords doesn't mean more coverage. Past a point, it means cannibalisation.

When three of your own keywords can match the same search, Google picks one for you, quality scores suffer, and you pay more per click for the same traffic. This account didn't need more keywords. It needed fewer, with clear lanes.

What I did

Fewer keywords, clear lanes, real job value

Four moves to give every search exactly one keyword, and bid on what actually makes money.

1
Took back control
Moved from automated bidding to Manual CPC while restructuring. You can't diagnose an account when the algorithm makes every decision on incomplete data.
2
Cut 100+ down to 15
Went through the search terms report line by line. Everything that overlapped, duplicated, or matched junk searches was removed, down to 15 phrase-match keywords.
3
One search, one keyword
Split into two campaigns, phrase match and exact match, with exact keywords added as negatives in the phrase campaign. No more internal competition.
4
Bid on real job value
Set up offline conversion tracking so bids were based on job value, not lead counts, critical in home services.
Apparent value of a repair lead
$500
Real average value
$2,000
Why offline tracking mattered

A repair job might be worth $500, but roughly 1 in 10 repair calls turns into a full changeout worth $15,000. That makes the real average value of a "repair" lead closer to $2,000. Without offline conversion data, the account would underbid on its most profitable searches without ever knowing it.

The outcome

Less waste, more return

+20%
ROAS increase across the account
↑ QS
Quality scores up, tightly matched terms & ads
↓ CPC
Lower bids for the same ad rank

Higher quality scores meant lower bids for the same ad rank. Combined with budget flowing only to proven keywords, ROAS increased by 20%.

“I thought a bigger account meant better coverage. Turns out cutting it back is what finally made the ads profitable.”
Home services advertiser
Google Ads client

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