B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
15%
15% -- cpa reduction for Performance Max local campaigns (2026)
Local businesses running Performance Max with strong location assets and Google Business Profile integration see 15-30% lower CPA than equivalent manual search campaigns.
- Reported as a range of 15-30% lower CPA compared to equivalent manual search campaigns
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
15%
Unit
Percentage
Data Vintage
2026
Entity
Geography
US
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Darkroom
Primary
Tier B
https://www.darkroomagency.com/observatory/paid-media-services-keywordless-search ↗
Source Article
Keywordless Search and Paid Media: Intent-Based Ad Strategy
Keywordless Search Is Here: How Paid Media Services Must Adapt to Intent-Based Advertising
PAID MEDIA
Written & peer reviewed by
4 Darkroom team members
Written & peer reviewed by 4 Darkroom team members
TL;DR: Google's AI Overviews, conversational search, and voice queries are eroding the keyword-b…
Original Research
Darkroom
· Original study ↗
Methodology
Darkroom internal benchmarks; midpoint of 15-30% range
Methodology documented
Segmentation
IndustryMedia
RegionUS
RoleAll marketers
Channelpaid_ads
Cite this stat
Plain Text
Performance Max local campaigns: 15% cpa reduction. Source: Darkroom (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/pmax-local-cpa-reduction
HTML Embed
<blockquote cite="https://lighthousedata.io/data/pmax-local-cpa-reduction" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>15%</strong> -- cpa reduction for Performance Max local campaigns<br><small>Source: Darkroom (2026) · <a href="https://lighthousedata.io/data/pmax-local-cpa-reduction" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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