Facebook vs Google Ads Budget Split: Real Math

The Core Split: Why 60/70% Google and 30/40% Facebook Works

The decision to split your $1,000/month ad budget between Google and Facebook isn't arbitrary—it's rooted in how these two platforms work. Google Ads (including Local Services Ads, Search, and Performance Max) are intent-based: someone searches "plumber near me" or "emergency HVAC repair" with a problem they need solved right now. Facebook and Instagram are awareness and reach platforms: they show your ad to people who *might* need you, based on interests, behaviors, and location—but they're not actively searching.

The math is stark. Google converts at 15-35% of clicks for local services; Facebook converts at 3-8% of clicks. That 2-3x conversion advantage means fewer wasted clicks. However, Google's cost-per-click is 40-60% higher. A plumber in Denver pays $2-4 per click on Google but $1-1.80 on Facebook. So the real question isn't which is "better"—it's how to blend them to maximize leads per dollar.

For most local service businesses (HVAC, plumbing, electrical, roofing), a 70/30 split ($700 Google, $300 Facebook) to a 60/40 split ($600 Google, $400 Facebook) balances conversion rate with reach. Google handles your hot prospects—people actively looking. Facebook builds awareness and captures people 3-6 months before they search. Both are necessary; the ratio depends on your market temperature.

Real-World Example: $1,000/Month Split in Action

Let's walk through a concrete case. You're an HVAC contractor in Phoenix, Arizona, running $1,000/month with a 70/30 split: $700 on Google Local Services Ads, $300 on Facebook Lead Ads.

Google ($700): Your average cost-per-click is $3 (Phoenix is mid-range for HVAC). You get 233 clicks. Your conversion rate on Local Services is 18% (contractor average). That yields about 42 leads. Your cost-per-lead on Google: $16.67.

Facebook ($300): Your average cost-per-click is $1.20. You get 250 clicks. Your conversion rate on Facebook Lead Ads is 5% (it's lower because intent is weaker). That yields about 12 leads. Your cost-per-lead on Facebook: $25.

Total: 54 leads for $1,000, at a blended cost-per-lead of $18.52.

Now flip the split to 50/50 ($500 each). Google yields 28 leads at $17.86/lead; Facebook yields 21 leads at $23.81/lead. Total: 49 leads at a blended CPL of $20.41. You lost 5 leads by adding Facebook spend—worse total outcome, even though Facebook's CPL looks better in isolation.

This is why ratio matters. Google's higher cost-per-click is offset by its conversion rate. Weighting it more heavily wins in a hot market (Phoenix summer = peak HVAC demand).

Cold Markets Favor Facebook; Hot Markets Favor Google

Your market temperature is the thermostat on this split. A "hot market" is one where demand is high and search volume is strong. A "cold market" has low immediate demand and fewer searchers.

Hot Markets (Favor Google, 70/30 split or more Google-heavy):

• HVAC in summer (June–August): Homeowners search "AC not working" urgently. Google CPL runs $12-20. Facebook's lack of intent is a waste.
• Roofers after storms: Damage triggers immediate searches. Google CPL: $18-35. Facebook is slower and doesn't catch the urgency spike.
• Plumbers in winter in cold climates: Frozen pipes = emergency searches. Google CPL: $14-28.
• Real estate in spring/summer: Buyer intent is highest; search volume peaks. Google CPL: $20-40.

In these scenarios, allocate 75-80% to Google, 20-25% to Facebook. You're capturing people mid-decision; the conversion rate is so high that the higher cost-per-click pencils out.

Cold Markets (Favor Facebook, 40/60 or 50/50 split):

• Landscaping in December–February: Demand is dead. Few people search "lawn care" in winter. Facebook reach is cheaper and builds brand for spring. Cost per Facebook lead: $8-15. Google CPL: $40+ (wasteful; few searchers).
• HVAC in January–March: Heating season winds down; spring cooling hasn't started. Furnace repairs exist, but volume is low. Google CPL spikes to $25-45. Facebook CPL stays $12-18.
• Contractor services in rural markets: Absolute search volume is low year-round. Facebook's broad reach is more efficient.
• New service in a new area: No brand awareness yet. Facebook builds it at $6-18/lead before Google searches happen.

In cold markets, try 40/60 or 50/50. The lower Facebook CPL and higher reach justify the lower conversion rate because Google's searcher pool is tiny and cost-per-click is inflated by scarcity.

The Weekly Monitoring Loop: When to Rebalance

Setting a 70/30 split is a starting point, not a set-and-forget. Markets shift. Seasonality moves in. Your campaigns need active monitoring and rebalancing—typically every 2 weeks for the first 8 weeks, then monthly after that.

Pull these numbers every Friday:

1. Google Ads: clicks, spend, conversions (leads), cost-per-lead.
2. Facebook Ads: clicks, spend, conversions (leads), cost-per-lead.
3. Blended cost-per-lead across both platforms.
4. Conversion rate by platform (leads ÷ clicks).
5. Relevance score on Facebook (if it's dropped below 3, note it for pause/restart).

Rebalance triggers:

• Google CPL exceeds $45 and Facebook CPL is under $22: Shift $50-100/month from Google to Facebook. You're paying a premium for low-intent searchers or over-saturation.
• Google CPL is $15-25 and Facebook CPL is $28+: Shift $75-150 from Facebook to Google. Google is crushing it; lean into the winner.
• Facebook relevance score drops below 3: Pause Facebook entirely for 10-14 days. Your creative is fatigued or targeting is off. Use that budget on Google. Return to Facebook with fresh creative and tighter audience after the pause.
• Google Local Services Ad quality score falls below 4/5: Your call-to-action or landing page is weak. Invest $100-200 in a faster landing page or clearer call button, then resume. Don't throw more budget at a broken funnel.

Example: You start at 70/30. Week 3 data shows Google CPL at $22, Facebook at $18. Facebook is winning. Shift to 60/40 ($600 Google, $400 Facebook) for the next 2 weeks. Week 5 shows Google CPL at $19, Facebook at $21. Google is back in the lead. Rebalance to 65/35. This dynamic tuning compounds small wins over months.

Seasonal Swings and Trade-Specific Splits

Different trades and seasons demand different splits. Here's what real data shows:

HVAC Contractor, Full Year (Chicago):

• June–August (summer peak): 75/25 Google/Facebook. Urgent AC repairs. Google CPL: $14. Facebook CPL: $20. Google dominates.
• December–February (winter off-season): 45/55 Facebook/Google. Furnace maintenance calls trickle in. Google CPL: $38 (few searchers). Facebook CPL: $15 (brand-building mode). Facebook is smarter.
• March–May and September–November (shoulder seasons): 65/35 Google/Facebook. Moderate demand; Google CPL: $22, Facebook CPL: $16. Split closer to even.

Roofing Company, Full Year (Texas):

• After hail storms (unpredictable, 1-2 weeks): 85/15 Google/Facebook. Emergency demand. Google CPL: $8-12. Allocate $850 Google, $150 Facebook.
• Spring/summer (scheduled repairs): 70/30. Google CPL: $18, Facebook CPL: $14.
• Fall/winter (steady state): 60/40. Google CPL: $22, Facebook CPL: $12.

Landscaping Company, Full Year (Minneapolis):

• March–May (spring awakening): 55/45 Google/Facebook. Demand surges but isn't urgent. Google CPL: $25, Facebook CPL: $13. Facebook is cost-efficient for brand awareness; Google captures hot leads.
• June–August (peak season): 70/30 Google/Facebook. People search "landscaper near me" actively. Google CPL: $16, Facebook CPL: $18.
• September–November (fall cleanup): 65/35. Google CPL: $20, Facebook CPL: $14.
• December–February (dead season): 30/70 Facebook/Google. No urgency. Google CPL: $55 (wasteful). Facebook CPL: $8 (build next season). Put $700 on Facebook for brand/email list-building; $300 on Google to catch emergency calls.

The pattern: When intent is high (searches are plentiful, people are actively looking), weight Google 70-85%. When intent is low or seasonal demand is down, flip toward Facebook (40-60%) because reach and cost-per-click are cheaper.

When This Split Does NOT Work

This 60/40–70/30 framework is robust for most local service businesses, but there are hard exceptions. Honesty matters here.

Google Ads fails (shift heavily to Facebook) when:

• Your market has almost no search volume: You're a locksmith in a rural mountain town, population 2,000. Google searchers: maybe 5-10/month. Facebook reach in a 10-mile radius: 8,000+. Google ads will burn cash on a tiny pool. Try 20/80 or 30/70 Facebook/Google.
• Your service has very low search intent but high awareness need: You sell custom kitchen cabinets. People don't search "cabinet installer" until they've already decided to renovate. Before that decision, they're on Pinterest and Facebook gathering inspiration. Budget 40/60 Google/Facebook to catch the inspiration phase (Facebook) and close searchers (Google).
• Your business model relies on brand awareness over immediate conversions: You're a real estate agent or financial advisor. Leads have a 3-12 month sales cycle. Google captures "ready to buy now." Facebook builds the relationship over time. Try 50/50 or even 40/60 Facebook/Google to deepen awareness.
• Google Ads have been disabled or flagged: Account review, policy violation, or too many complaints have restricted your Google advertising. You're forced to Facebook. Use that time (4-12 weeks typically) to build Facebook lead quality and nurture lists. Don't wait passively.

Facebook Ads fail (shift heavily to Google) when:

• Your audience is micro-local and tiny: You're a plumber in a 2-mile radius of a specific neighborhood. Facebook's lowest targeting radius is often larger, or the audience size is so small (under 200) that CPL explodes and relevance dies. Google Local Services Ads let you target by ZIP. Try 80/20 Google/Facebook or pure Google.
• You have no pixel data (new business, no website traffic): Facebook audiences (Lookalike, Retargeting) need historical data. Without a pixel and 100+ conversions, you're limited to interest/demographic targeting, which has weak relevance. Google doesn't require this history. If you're brand new, front-load Google at 80/20 for the first 60 days. Once you have 50+ Facebook conversions, rebalance to 70/30.
• Your lead quality tanked on Facebook suddenly: You ran Facebook ads for 2 months, got cheap leads, but close rate dropped from 12% to 3%. This means Facebook's audience targeting drifted (creative fatigue, relevance score dropped, or the platform is showing your ad to low-intent people). Don't throw more budget at a broken channel. Pause Facebook, redistribute to Google for 14 days, then return to Facebook with new creative and tighter targeting. If it happens again, accept that Facebook isn't your channel—stay at 85/15 Google/Facebook.
• Your market is dominated by Google Local Services Ads (contractors): Google Local Services Ads (the blue "Google Guaranteed" badges on the search results) have near-monopoly reach in home services. Every plumber, electrician, and roofer with a Local Services Ad presence is basically unavoidable on Google. If you're not in Local Services yet, your Google Search Ads CPL will be high ($30-60). Start there while building your Local Services eligibility (licensing, insurance, reviews). Meanwhile, try 40/60 Facebook/Google. Once Local Services is live, rebalance to 70/30 Google/Facebook because your CPL will drop to $12-22.

Budget Math: What $1,000 Buys You by Platform

Let's build a decision table. These are realistic ranges for common trades, using data from cost-per-lead by trade benchmarks:

At a 70/30 split, you're looking at 40-60 leads per month depending on your trade. Painting and electrical trades see higher volume because Facebook's CPL is cheaper relative to Google. Real estate is lower because both platforms cost more (higher buyer value = higher advertiser demand).

If your close rate is 20%, that 50-lead average = 10 jobs booked per month. At $1,500 average job value, that's $15,000 revenue—a 15:1 ROAS on your $1,000 ad spend. If your close rate is only 10%, you're at 5 jobs and $7,500 revenue, a 7.5:1 ROAS. Either way, the math works if you're closing leads efficiently.

But if your close rate is 2-3% (a red flag), that 50-lead month yields only 1-1.5 jobs. Your ROAS crashes to 1.5-2.25:1. When this happens, it's not a budget split problem—it's a qualification or follow-up problem. See lead follow-up timing and filtering tire-kicker leads for fixes.

Scaling Beyond $1,000/Month: How the Split Shifts

Once you've validated your 70/30 (or 60/40) split and proven unit economics, scaling up changes the ratio slightly.

At $2,000/month ($1,400 Google, $600 Facebook): Your Facebook CPL usually *stays* $12-25 (Facebook algorithm can handle higher spend without major cost increases in the same audience). Google's CPL often rises 15-25% due to higher CPCs at scale (more competition for the same keywords). You might rebalance to 65/35 ($1,300 Google, $700 Facebook) to keep both platforms efficient.

At $5,000/month ($3,500 Google, $1,500 Facebook): Google's CPL is now $22-35 (saturation in your local market). Facebook's CPL is still $14-26. You might shift to 60/40 to avoid over-weighting a more expensive channel. Or, stop growing Google and use the extra cash to expand your geographic radius (if possible) and test Facebook Messenger ads or Instagram Reels, which sometimes have lower CPL due to less advertiser competition.

At $10,000+/month: Most contractors hit a local saturation ceiling. Adding more to Google doesn't help—CPL keeps rising. Instead, diversify: 50% Google, 25% Facebook, 15% Google Local Services Ads (if not already included), 10% testing/experimental (Nextdoor, TikTok, YouTube). This reduces dependence on any single channel.

The principle: Don't linearly scale both platforms. Monitor CPL on each and rebalance quarterly. Often, the profitable channel sees slower scaling; the efficient channel sees faster scaling until CPL rises.

Tools and Setup for Tracking Your Split

To monitor your 70/30 (or any) split effectively, you need clean data. Use these tools:

• Leadria itself: If you're using Leadria, your leads are tagged by source (Facebook/Google). Log in weekly, filter by platform, and pull lead count and revenue. This is your source of truth.
• Google Ads reporting: Conversions column (if you've set up conversion tracking). Divide total spend by conversions to get CPL.
• Facebook Ads Manager: Leads result column (if using Lead Ads) or pixel-tracked conversions. Same math: spend ÷ conversions = CPL.
• Spreadsheet template: Log week-by-week: date, Google spend, Google leads, Google CPL, Facebook spend, Facebook leads, Facebook CPL, blended CPL, action taken. Review every Friday. Over 12 weeks, patterns emerge.

Advanced: Use Google Sheets or Airtable to auto-pull data from both platforms via API, build a dashboard, and set alerts (e.g., "if Google CPL > $40, send email"). This is overkill for a $1,000 budget but essential if you're scaling to $5,000+.

The Bottom Line: Start 70/30, Monitor Weekly, Rebalance Monthly

Your $1,000/month budget is best spent at a 70/30 Google-to-Facebook split ($700 Google, $300 Facebook) for most local service businesses in hot markets. This balances Google's superior conversion rate (2-3x) and intent against Facebook's reach and cost efficiency.

Cold markets (seasonally off-peak, rural, or brand-awareness-first) shift to 60/40 or even 50/50. Check your data every Friday. Rebalance every 2 weeks if something changes (CPL spikes, relevance drops, seasonality shifts). After 12 weeks, you'll have enough data to lock in a ratio that works for your specific trade, market, and season.

The biggest mistake: setting a split and never revisiting it. Markets move fast. A summer HVAC budget that works in June is obsolete by September. Stay flexible, stay data-driven, and adjust. That's how you extract maximum leads from $1,000/month.