CTV vs Billboards for Law Firm Advertising

Billboards and CTV both build awareness. But they work very differently. Understanding the trade-offs helps you allocate budget effectively.

The Fundamental Difference

Reach Comparison

Billboards

• Reach: Everyone driving past
• Targeting: Geographic only (this road, this intersection)
• Frequency: Depends on driving patterns
• Control: None. You get everyone or no one

A well-placed billboard might get 50,000+ daily impressions. But how many are potential PI clients? How many are even from your service area?

CTV

• Reach: 90% of U.S. households via streaming
• Targeting: Geographic + demographic + behavioral
• Frequency: Controlled per household
• Control: Full—reach exactly who you define

CTV reaches 1,000 targeted households more efficiently than billboards reach 100,000 random passersby.

Targeting Comparison

Billboard Targeting

What you can target:

• Physical location (this highway, this intersection)
• General demographics of traffic (commuter routes vs. downtown)

What you can't target:

• Specific behaviors
• Income levels
• Age ranges
• People who actually need lawyers

CTV Targeting

What you can target:

• Specific zip codes
• Behavioral signals (auto loans, motorcycle owners)
• Demographic filters
• Intent signals (legal research behavior)
• Your first-party data (client lookalikes)

See Why Demographic Targeting Wastes Budget.

Message Comparison

You can communicate a brand impression with a billboard. CTV delivers your full message with emotional impact.

Measurement Comparison

Billboard Measurement

What you can measure:

• Estimated impressions (traffic counts)
• Location visibility studies

What you can't measure:

• Who actually saw your billboard
• Whether it drove action
• Website visits from billboard exposure
• Calls attributed to billboard
• ROI with any confidence

Billboards are essentially unmeasurable at the response level.

CTV Measurement

What you can measure:

• Exact impressions delivered
• Household-level exposure
• Verified website visits
• Attributed conversions
• Cost per lead and cost per case

CTV accounted for 38% of impressions but 63% of attributable conversions—measurement that proves ROI.

Cost Comparison

Billboard Costs

Market	Monthly Cost
Small market	$1,500-3,500
Mid market	$3,000-8,000
Major market	$5,000-15,000+
Premium locations	$10,000-30,000+

Plus production: $500-2,000 for design/printing.

Cost per impression: Extremely low (fractions of a cent) Cost per qualified impression: Unknown (unmeasurable)

CTV Costs

Market	Monthly Budget
Small market	$15,000-25,000
Mid market	$30,000-50,000
Major market	$50,000-80,000
Top market	$75,000-150,000+

Plus production: $15,000-40,000 for initial creative.

Cost per impression: $0.035-0.050 (CPM) Cost per qualified impression: Measurable (targeted audience)

CTV's higher absolute cost comes with targeting and measurement that billboards lack.

Strategic Uses

When Billboards Make Sense

• Specific location relevance: Near hospitals, crash sites, major intersections
• Pure brand building: When measurement isn't required
• Budget constraints: Can't afford minimum viable CTV
• Supplement: Adding to existing TV/CTV presence
• Iconic placement: "Own" a famous location

When CTV Makes Sense

• Growth objectives: Need to build market presence with measurement
• Targeting needed: Want to reach specific household types
• Accountability required: Must prove ROI to partners
• Competitive markets: Need differentiation beyond location
• Full-funnel approach: Integrating awareness with search capture

The Attention Factor

The depth of attention is incomparable.

Integration Considerations

Billboard + CTV

Billboards can reinforce CTV messaging:

• Same visual identity
• Same tagline
• Location presence + household reach
• Brand consistency across touchpoints

Billboard Without CTV

Billboards alone provide:

• Location-based awareness
• Brand presence in physical space
• Unquantifiable impact
• Limited targeting

CTV Without Billboard

CTV alone provides:

• Targeted household reach
• Measurable attribution
• Full messaging delivery
• Optimization capability

Most firms prioritize CTV over billboards given measurement advantages.

The Verdict

For most PI firms with growth objectives and accountability requirements, CTV outperforms billboards:

Factor	CTV	Billboard
Targeting	✓✓✓	✗
Measurement	✓✓✓	✗
Message depth	✓✓✓	✗
Attention quality	✓✓✓	✗
Location specificity	✗	✓✓✓
Budget flexibility	✓	✓✓
ROI provability	✓✓✓	✗

Billboards are a supplemental tactic for specific location objectives. CTV is a strategic growth driver.

For complete channel comparison, see Best Marketing Channels for PI Firms.

References

• Nielsen. (2025). Connected TV: Transforming advertising trends. https://www.nielsen.com/insights/2025/connected-tv-transforming-advertising-trends/
• IAB & Innovid. (2022). CTV takes center stage: 2022 video benchmarks. https://www.iab.com/wp-content/uploads/2022/05/Innovid_CTV-Takes-Center-Stage.pdf
• Decentriq. (2025). CTV advertising: The complete guide. https://www.decentriq.com/article/ctv-advertising