Direct answer: The working rule: ~10% of revenue to grow, ~5% to maintain. A $1M plumbing company scaling should budget $8-10K/month all-in (ad spend + management); established operators run $1,500-$3,500/month starter, $3,500-$9,000 growth. Build the budget backwards from booked jobs: want 20 jobs/month at 40% close = 50 leads; at $80/lead = $4,000 media spend + management fee. If that math doesn't fit, start with the free channels first.
The full breakdown
- The 10%/5% rule of thumb from agencies who run real contractor budgets — tie it to your revenue, not someone else's
- Build it from outcomes: 20 booked jobs × 40% close rate = 50 leads needed × $80 CPL = $4,000 media + management on top
- Starter all-in for plumbing: $1,500-$3,500/mo; growth: $3,500-$9,000+/mo — competitive metros run hotter
- Cheap alternative that compounds: $47/mo video engine + free GBP + review automation — 15 min/day of owner time instead of $4K of ad spend
- Whatever the budget: track every lead to source from day one or you're flying blind
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Published 2026-10-02 · Part of the BizLift Q&A knowledge base · Related: plans & pricing, blog, services