Home Services Overhead Rate: How to Calculate and Benchmark Your Operating Costs

If gross margin is the number most home services owners obsess over, overhead is the one they overlook. And that’s a problem, because overhead is usually where the easiest profit improvements are hiding.

Here’s the pattern I saw reviewing hundreds of P&Ls on the buy side — including time at Apex Service Partners: an HVAC or plumbing company would have respectable gross margins — 50%, 52%, maybe even 55% — and still report net profit margins in the single digits. The owner would look at the top of the P&L and assume things were fine, not realizing that their overhead structure was quietly eating 35–40% of every revenue dollar before they ever got to the bottom line.

Overhead doesn’t announce itself. It grows slowly — a new admin hire here, a software subscription there, an office lease that made sense at $3M in revenue but hasn’t been reconsidered now that you’re doing $7M. Each individual line item seems reasonable. But in aggregate, they can represent the difference between a 10% net margin and a 20% one.

This article breaks down what healthy overhead looks like for HVAC, plumbing, and electrical companies, what the most common cost leaks are, and how to think about managing your overhead as your business grows.

Managing overhead effectively is what separates high-margin operators from the rest. Our Fractional CFO for Contractors service helps identify and eliminate overhead waste.

What Is Overhead in a Home Services Business?

Before getting into benchmarks, it’s worth defining what we’re actually measuring. Overhead — sometimes called SG&A (Selling, General, and Administrative expenses) — is every cost that isn’t directly tied to completing a job.

Direct job costs (your cost of goods sold) include technician wages while on a job, materials and parts, equipment, subcontractors, and any other cost that only happens because you did that specific job. Everything else is overhead.

That includes office staff salaries, rent, utilities, vehicle payments and fuel, insurance premiums, software subscriptions, marketing spend, professional fees (accounting, legal), training, uniforms, and your own compensation as the owner. If you’d still pay it even if you didn’t run a single job next month, it’s overhead.

Overhead Benchmarks by Category

Here’s what healthy overhead composition looks like for a residential home services company doing $3M–$20M in revenue. These are expressed as a percentage of total revenue.

The critical number to know is your operating overhead — everything excluding marketing. For established home services companies doing $5M+ in revenue, this number should be converging toward 20%. Younger and smaller companies will naturally run higher (often 25–30%) because fixed costs haven’t been diluted by revenue growth yet.

Marketing is separated because it’s a variable investment. A company in growth mode might spend 10–12% of revenue on marketing. An established company with a strong referral base and brand might only need 5–6%. Both can be healthy — it depends on the growth strategy. What matters is that marketing spend is tracked monthly as a percentage of revenue and that you can tie it to booked revenue by channel.

How Overhead Differs by Trade

The overhead structure is broadly similar across HVAC, plumbing, and electrical, but there are a few trade-specific differences worth noting.

HVAC tends to have the highest fleet costs because trucks need to carry larger equipment (condensers, furnaces) and the vehicle itself is often a larger van or box truck. HVAC also tends to have slightly higher insurance costs due to the nature of the work (refrigerant handling, gas connections).

Plumbing often runs leaner on fleet because the trucks are smaller and the parts inventory per truck is less expensive. However, plumbing companies that do a lot of excavation work (sewer line replacement) may have higher equipment costs that show up either in COGS or overhead depending on how they’re categorized.

Electrical typically has the lowest fleet and equipment overhead among the three trades. The trucks are smaller, the parts inventory is the least expensive, and the equipment needs are minimal. This is one reason electrical companies can achieve strong net margins even at modest scale.

The Five Most Common Overhead Problems

1. Office Staff Creep

This is the most expensive and most common overhead issue I saw. As companies grow, they add admin roles — a second dispatcher, a dedicated AR person, an HR coordinator, a marketing assistant. Each hire makes sense individually. But the office-to-field ratio quietly shifts from 1:8 to 1:4, and suddenly admin salaries are 15% of revenue instead of 10%.

The benchmark to track is your office-to-technician ratio. For most residential home services companies, 1 office employee per 5–6 field technicians is healthy. If your ratio is higher, look at whether technology or process improvements could reduce the admin burden before adding another head.

2. Facilities That Don’t Match the Business

I reviewed plenty of companies operating out of facilities that were either too big for their current size or located in high-rent areas that didn’t serve any customer-facing purpose. Your shop, warehouse, and office don’t need to be impressive — they need to be functional. A company doing $5M out of a $12,000/month facility is spending 2.9% of revenue on rent. That same facility for a $3M company costs 4.8%. The space didn’t change — the business shrank relative to the fixed cost.

If your facilities cost is above 4% of revenue, evaluate whether you’re paying for space you don’t need. This is especially common after a slow year when revenue drops but the lease doesn’t.

3. Unmanaged Fleet Costs

Fleet is one of those categories where costs accumulate in places you’re not looking. The truck payment is obvious. But fuel, maintenance, insurance, GPS tracking fees, decals/wraps, and vehicle replacement together can push total fleet cost to 5–6% of revenue if not actively managed.

Track your total cost per truck per month — all in. Most residential home services companies should be in the $1,000–$1,500 range per truck per month including everything. If you’re materially above that, look at vehicle age (old trucks have higher maintenance costs), fuel efficiency, and whether you have trucks sitting idle.

4. Software and Subscription Bloat

Technology is essential to running a modern home services company. But it’s also easy to accumulate subscriptions that overlap or go underutilized. The field management platform, the CRM, the phone system, the marketing automation tool, the review management platform, the fleet GPS, the accounting software, the project management tool — each one is $100–$500/month. By the time you add them all up, you might be spending $3,000–$5,000/month on software that your team is only partially using.

Once a year, audit every software subscription. For each one, ask: who uses it, how often, and what would break if we cancelled it? You’ll almost always find something to cut.

5. Owner Compensation Classified Wrong

This isn’t an overhead problem per se, but it’s an overhead distortion that I saw in nearly half the companies we reviewed. Owner compensation sitting in cost of goods sold instead of overhead makes your gross margin look lower than it actually is and makes your overhead look lower than it actually is. Both numbers are wrong, and any buyer or analyst who sees that will restate it immediately.

If you’re the owner and you’re not turning a wrench full-time, your salary belongs in overhead. If you are turning wrenches, a portion of your comp (reflecting your field labor) can stay in COGS, but the rest — the management, sales, and ownership functions — should be in overhead. Getting this classification right gives you an accurate picture of both your job-level profitability and your operating cost structure.

How Overhead Changes as You Scale

One of the most important things to understand about overhead is that it doesn’t scale linearly with revenue. Most overhead categories are semi-fixed — they step up as you grow, but not dollar-for-dollar with revenue.

Here’s the practical implication: if you can grow revenue by 20% without adding another office employee or signing a bigger lease, your overhead percentage drops — even though the overhead dollars didn’t change. This is operating leverage, and it’s one of the most powerful dynamics in a home services business.

A company doing $3M with 25% operating overhead has $750,000 in overhead costs. If that company grows to $4M and overhead only grows to $825,000, the overhead rate drops to 20.6%. That extra $75,000 in overhead supported $1M in new revenue — meaning 93% of the overhead benefit of that new revenue fell through to profit.

This is why growth — when paired with discipline on overhead — is the fastest path to margin improvement. It’s also why PE firms look for companies with scale potential: they know that overhead leverage will improve margins post-acquisition.

Proper Bookkeeping Services provide the foundation for accurate overhead tracking and monthly monitoring.

How to Calculate and Monitor Your Overhead Rate

If you’re not already tracking your overhead rate, here’s the simple version:

Operating Overhead Rate = (Total Overhead − Marketing) ÷ Total Revenue

Total Overhead Rate = Total Overhead ÷ Total Revenue

Calculate these monthly. Plot them over time. The trend matters more than any single month — you want to see a downward slope on operating overhead as your revenue grows, and you want your marketing spend to be relatively stable as a percentage of revenue (unless you’re deliberately investing in a growth push).

If your operating overhead rate is above 25%, identify the top three line items and pressure-test each one. Could you consolidate a role? Renegotiate a lease? Reduce fleet size? Cut an underused subscription? Most companies can find 2–3% of revenue in overhead savings without affecting operations.

If your operating overhead is already at or below 20%, you’re well-managed. The marginal improvement from cutting further is usually small, and you risk cutting into capabilities that support growth. At that point, the better ROI is growing the topline and letting operating leverage do its work.

For additional industry data, visit U.S. Small Business Administration.

Related: Operational Reporting | Margin Diagnostic Calculator | Capitalize vs. expense explained | Cash vs. accrual for contractors

About the Author

Matthew Mooney

Matthew Mooney is a co-founder of Profitability Partners and a former private equity professional with deep experience in home services M&A. Over the course of his career, Matthew has reviewed over 200 acquisitions of HVAC, plumbing, roofing, and electrical companies. He previously worked at Apex Service Partners, one of the largest residential home services platforms in the country — giving him a rare, buyer-side perspective on what drives valuation, profitability, and deal structure in the trades. He now helps contractors and home services business owners optimize their financials, plan for exits, and maximize the value of their companies.

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Matthew Mooney

Matthew Mooney is a co-founder of Profitability Partners and a former private equity professional with deep experience in home services M&A. Over the course of his career, Matthew has reviewed over 200 acquisitions of HVAC, plumbing, roofing, and electrical companies. He previously worked at Apex Service Partners, one of the largest residential home services platforms in the country — giving him a rare, buyer-side perspective on what drives valuation, profitability, and deal structure in the trades. He now helps contractors and home services business owners optimize their financials, plan for exits, and maximize the value of their companies.