How Much Should a Plumbing, HVAC, or Roofing Business Spend on Marketing?

Every service business owner asks this question at some point. The answer you usually get is '5 to 10% of revenue,' and that answer is almost always wrong for the business asking it.

The Rule of Thumb and Why It Misleads

The 5 to 10% rule is a benchmark for mature businesses with established market share. If you are trying to grow, you need to spend more. If you are coasting on referrals and saturated, you probably need to spend less on ads and more on retention.

Marketing budget should be tied to your growth stage, your competitive landscape, and your infrastructure, not a generic percentage.

Under $500K in Revenue

Growth stage. Budget 15 to 20% of revenue, with a floor of $5,000 to $8,000 per month. You are still establishing your market presence. You cannot cheap your way to growth.

At this stage, prioritize foundational infrastructure: a real website, Google Business Profile optimization, LSA if you qualify, and a CRM that captures every lead. Paid media should be focused on highest-intent channels only.

$500K to $1M in Revenue

Scaling stage. Budget 10 to 15% of revenue, roughly $6,000 to $12,000 per month. This is where most blue-collar service businesses hit a wall because they are not investing enough in the systems that would unlock the next tier.

Add SEO content, retargeting ads, email nurture sequences, and a review generation engine. Your goal is to diversify lead sources so you are not dependent on one channel.

$1M to $3M in Revenue

Optimization stage. Budget 8 to 12% of revenue, roughly $10,000 to $25,000 per month. You should have visibility into cost per lead by channel and close rate by source. Double down on what works, kill what does not.

This is also the stage where Google Local Services Ads, Google Search campaigns, and Meta retargeting should all be running in parallel with SEO as the compounding foundation.

$3M and Above

Efficiency stage. Budget 5 to 8% of revenue. Your infrastructure is mature. You are tightening efficiency, optimizing creative, and expanding geographically or into adjacent services.

Where the Budget Should Go

For a typical blue-collar service business: 20 to 25% on GBP and local SEO (foundation, compounds forever), 35 to 45% on paid search including LSA and Google Ads (highest-intent demand capture), 15 to 20% on website and conversion infrastructure (one-time heavy then maintenance), 10 to 15% on email, content, and review systems (retention and reputation), 5 to 15% on Meta for brand and retargeting.

The HVAC Example

A $1.2M Texas HVAC company was spending 4% of revenue on marketing, mostly on one Google Ads campaign managed by an agency. Leads were inconsistent, CPL was climbing, and maintenance agreement sales were flat.

We restructured the budget to 10% of revenue, about $10,000 a month. $2,500 on GBP and SEO, $4,000 on Google Search and LSA, $1,500 on website and CRM maintenance, $1,000 on email and review automation, $1,000 on Meta retargeting. Within six months, leads doubled, CPL dropped 35%, and maintenance agreements grew 70%.

Red Flags

You are overspending if you have no tracking on lead sources, no CRM visibility, and one agency controlling everything. You are underspending if competitors are outranking you in the Map Pack, your website is from 2016, and your review count has been flat for a year.

Bottom Line

Budget follows infrastructure. If your conversion systems cannot handle more leads, more ad spend is just lighting cash on fire. Build the infrastructure first, then scale the budget to match.

Cole Emmons

Founder, New Age Adaptation