“Should I be on Google or Facebook?” I get this question at least once a week from business owners in San Diego and beyond. The honest answer: it depends on your business, your audience, and your goals. But after running both platforms across 25+ clients in legal, medical, automotive, med spa, and retail, I have strong opinions on when each one wins.
The Core Difference: Intent vs. Interruption
This is the most important concept in paid advertising:
- Google Ads is intent-based. Someone types “emergency plumber San Diego” because they need a plumber right now. You’re showing up when demand already exists.
- Facebook Ads is interruption-based. You’re showing your ad to people while they’re scrolling through vacation photos. You have to create the desire — it doesn’t exist yet.
This single distinction drives most of my recommendations. If your customer knows they need your service and is actively searching for it, Google wins. If you’re selling something aspirational, building brand awareness, or reaching a specific demographic that may not know they need you yet, Facebook has advantages.
Head-to-Head Comparison
| Factor | Google Ads | Facebook Ads |
|---|---|---|
| User Intent | High — actively searching | Low to medium — passive scrolling |
| Targeting | Keyword + audience | Demographic, interest, behavior |
| Typical CPC | $3–$50+ depending on industry | $0.50–$3 for most local services |
| Conversion Rate | Higher (warm intent) | Lower (cold audience) |
| Creative Required | Text-based copy | Strong visual creative required |
| Best for | Bottom-funnel, ready to buy | Top-funnel, awareness, remarketing |
| Learning Curve | Moderate | Moderate to High (iOS changes) |
When Google Ads Wins
Google is the right primary channel when:
- People search for your service category regularly (HVAC, plumbing, legal services, med spa treatments)
- Your sales cycle is short (same-day or within 1-2 weeks)
- You need leads now, not brand building
- Your service is urgent or necessity-driven (emergency services, medical care)
- You operate in a defined geographic area with measurable search volume
Examples from my client base: A personal injury attorney in San Diego needs Google Ads. People don’t browse Instagram looking for a lawyer after a car accident — they Google it. An automotive service center needs Google Ads. “Oil change near me” is searched thousands of times a day.
When Facebook Ads Wins (or Complements)
Facebook/Instagram becomes the better or complementary channel when:
- You’re selling aspirational services (elective aesthetics, luxury experiences)
- Your target audience has specific demographic/interest profiles (age, income, interests)
- You have compelling visual creative to show results (before/after, transformations)
- You want to build brand awareness in a specific zip code or neighborhood
- You’re running remarketing to people who’ve already visited your website
Example: A med spa running promotions on lip filler or facial packages can do very well on Instagram — especially with before/after creative targeting women 25-45 in the target neighborhood. The search volume for “lip filler specials” might be lower than you need, but the visual platform with demographic targeting fills the gap.
Industry-by-Industry Breakdown
| Industry | Primary Channel | Why |
|---|---|---|
| Personal Injury Law | Google Ads | High-intent search, urgent need |
| Med Spa (Botox/Filler) | Both | Search + visual/aspirational |
| Medical Practice | Google Ads | Patients search for specific conditions |
| Automotive Service | Google Ads | High local search volume |
| Retail / Ecommerce | Both | Google Shopping + Facebook prospecting |
| Restaurant | Facebook/Instagram | Visual, low search intent, social discovery |
The Budget Question
If you have limited budget, start with Google Ads for service-based businesses. The ROI timeline is shorter — you can see results within 30-60 days if your landing page and conversion tracking are set up right. Facebook often requires a longer runway for the algorithm to learn your audience, and the creative investment is higher.
Once Google is profitable and stable, layer in Facebook for remarketing and top-of-funnel awareness. The combination is powerful — Google captures existing demand, Facebook creates new demand and re-engages past visitors.
Attribution: The Complication
One challenge with running both platforms simultaneously: attribution. A customer might discover you on Facebook, then search Google and convert. Both platforms will claim credit. Use GA4 multi-touch attribution modeling to get a clearer picture of which channels are driving results across the full customer journey.
The bottom line: for most local service businesses, Google Ads is the foundation. It’s where intent lives. Start there, get it converting, then layer in other channels. If you’re ready to get your Google foundation right, my beginner’s guide is the starting point, and the budget framework guide helps you size it correctly.
Frequently Asked Questions
Is Google Ads better than Facebook Ads for local service businesses?
For most local service businesses, yes — Google Ads wins on conversion rate and purchase intent. When someone searches ’emergency plumber San Diego’ on Google, they have immediate need and intent to hire. Facebook reaches users who aren’t actively searching for your service. However, Facebook excels for awareness campaigns, retargeting, and businesses where visual content drives decisions — home remodeling, med spas, restaurants. The best answer for most businesses is running both.
What’s the average cost per lead on Google vs Facebook?
Google Ads typically generates higher-intent leads that close at higher rates while Facebook leads require more nurturing. In legal, medical, and home services, Google leads typically close at 2-5x the rate of Facebook leads. Facebook’s CPL may look lower on paper, but cost-per-closed-customer is often higher. I track cost per closed deal — not just cost per lead — to give clients the full picture. Cheap leads that don’t close are worse than expensive leads that do.
Can I run Google Ads and Facebook Ads on the same budget?
Yes, and for most businesses, I recommend splitting budget across both platforms once you’ve established what works on one. Start with Google Ads to capture existing demand, then add Facebook Ads for brand awareness and retargeting. I typically recommend a 70/30 or 60/40 split favoring whichever platform shows better ROI in your first 90 days of running both simultaneously.
Which platform has better targeting options?
Facebook offers more granular demographic and interest-based audience targeting — age, interests, life events, behavior, custom audiences from email lists. Google’s targeting is primarily intent-based — what people are actively searching for. For reaching specific demographic profiles proactively, Facebook wins. For reaching people who are actively in buying mode right now, Google wins. The ideal strategy uses both: Google for in-market intent, Facebook for demographic precision.
How do I measure which platform is actually working better?
Attribute both platforms in Google Analytics 4 using UTM parameters on all ad URLs. Set up GA4 conversion events for the same goals across both. Compare cost per conversion, conversion rate, and cost per closed deal when CRM data is available. Be aware that both platforms over-report conversions in their native dashboards due to attribution window differences. GA4 as a neutral third-party measurement source gives the most accurate cross-platform comparison.
Looking for more Google Ads strategies? Read my guide on Remarketing 101, explore my Google Ads management services, or get in touch to talk through your account. I manage paid search for 15+ active clients across San Diego.
