Plumbing Business Valuation by Revenue Size in 2026

Plumbing businesses are valued on SDE multiples of 1.8x to 4x for owner-operated shops under $500K in earnings, and on EBITDA multiples of 5.5x to 11x for larger companies with professional management.

The revenue tier you sit in decides which method buyers use, which buyer pool calls you, and how your offer is structured.

A $2M-revenue shop and a $10M-revenue shop are not the same business at different scale. They are different deals with different buyers.

Here is what valuation looks like at each size.

Why Revenue Size Changes the Whole Valuation

Size is a proxy for risk. A larger plumbing business has delegated operations, a deeper licensed-plumber bench, and systems that survive the owner walking out the door.

That lower risk is what earns a higher multiple, and it is also what flips buyers from SDE-based to EBITDA-based math as you grow.

The same revenue dollar is worth more inside a business that does not depend on one person. That is the whole game.

Under $1M Revenue: The Owner-Operator Shop

These businesses are valued on SDE, typically at 1.8x to 4x. Most owners sit at the low end because they are the business: the lead estimator, the relationship holder, and often the only master plumber qualifier.

The buyer pool is individual SBA buyers, search funders, and the occasional regional operator adding a market.

A typical small acquisition is financed with an SBA 7(a) loan, a seller note, and a modest buyer equity check. Expect to stay on for a real transition.

The single biggest lever here is reducing owner dependence. If the business can run a full week without you, and someone else holds the qualifier license, you move from the bottom of the range toward the top.

$1M to $3M Revenue: The Established Service Business

This is the transition zone. Earnings around $500K still get quoted on SDE by individual buyers, but the first professional buyers start measuring you on EBITDA.

Multiples land around 4x to 6.5x EBITDA depending on recurring revenue and licensed-plumber depth.

Sub-platforms and regional consolidators are the most active buyers here, often folding you into a larger cluster they plan to sell upward.

The businesses that clear the top of this range have crossed 30% recurring maintenance revenue and have at least one licensed plumber besides the owner.

$3M to $10M Revenue: Platform and Add-On Territory

Now you are on the PE radar. The serious-interest floor for sponsors is roughly $3M in revenue and $500K in EBITDA, and businesses here are valued on EBITDA at 5.5x to 7x, reaching higher with a strong recurring base and commercial mix.

PE-backed platforms compete directly at this size, and a clean business with a deep licensed bench can draw multiple offers.

Commercial plumbing earns a premium of roughly 1x to 1.5x EBITDA over residential at this size, because contracted B2B revenue and collectable receivables are easier to underwrite than cash-basis residential service calls.

$10M+ Revenue: The Platform Anchor

At this scale you can anchor a new roll-up rather than disappear into one. Valuations reach 6x to 11x EBITDA, and the rare multi-trade platforms have traded far higher.

For reference, GF Data pegs specialty trade contractors (the category plumbing sits in) at roughly 5.7x at $10M to $25M of enterprise value, climbing to 8.2x at $100M to $500M.

The headline megadeals show the ceiling: Champions Group, a residential HVAC, plumbing, and electrical platform, sold to Blackstone in February 2026 at about $2.5B and roughly 18.5x EBITDA. Sila Services sold to Goldman Sachs Alternatives at about $1.7B in late 2024.

Those numbers are not what a single plumbing company receives, but they explain why platforms can pay 6x to 8x for add-ons and still make the math work.

The Multiplier Most Plumbing Owners Miss

Two businesses with identical EBITDA can sell for very different numbers, and the gap usually comes down to the qualifier license.

If you are the only master plumber and there is no backup on staff, every buyer prices in the risk of losing the license the day you leave. That can cost a full turn or more of EBITDA, or end the deal.

Qualifying a backup master plumber 12 or more months before sale is the highest-return preparation move available, and it is invisible on your P&L.

For the full breakdown of what raises and lowers the number, see our guide on plumbing business sale multiples.

How Plumbing Valuation Compares to HVAC

Because the same platforms buy both trades, plumbing and HVAC valuations rhyme, but they are not identical. HVAC small-shop multiples often run a touch higher, while plumbing carries the distinct license-transfer risk that HVAC does not.

If you run both trades under one roof, which is common, your business is valued as a multi-trade home services company, and that breadth is itself a premium driver. Compare the HVAC side in our guide on HVAC business valuation by revenue size.

Once you know your tier and number, the next question is who to sell to.

Read PE versus strategic buyers for plumbing sellers and how long it takes to sell a plumbing business.

Selling in Pennsylvania? Our state guide covers how these multiples apply in the PA market, plus licensing rules and the Bulk Sales Clearance process: how to sell a plumbing business in Pennsylvania.

Plumbing Valuation FAQ

How is a plumbing business valued by revenue size?

Owner-operated shops under $1M revenue are valued on SDE at 1.8x to 4x. Businesses from $1M to $3M revenue move to EBITDA at roughly 4x to 6.5x. From $3M to $10M, valuations run 5.5x to 7x EBITDA, and above $10M they reach 6x to 11x. Larger size signals lower owner-dependence risk, which earns the higher multiple.

At what size does private equity get interested?

The serious-interest floor for PE sponsors is roughly $3M in revenue and $500K in EBITDA. Below that, you are talking to sub-platforms assembling small shops into a cluster, or to individual SBA buyers. Above it, PE-backed platforms compete directly and a clean business can draw multiple offers.

When does valuation switch from SDE to EBITDA?

Around $500K in earnings. Below that, smaller buyers quote on SDE, which adds back your full owner compensation. Above it, professional buyers measure you on EBITDA, which deducts a market-rate manager salary. Buyers above roughly $2M in deal size will not accept an SDE-based valuation at all.

Is commercial plumbing worth more than residential?

Yes. Commercial plumbing earns a premium of roughly 1x to 1.5x EBITDA over residential at the same size, because contracted B2B revenue and collectable receivables are easier to underwrite than cash-basis residential service calls. A strong commercial book also signals recurring, predictable demand.

How much do the big multi-trade megadeals affect my valuation?

They set the ceiling, not your number. Champions Group sold to Blackstone in February 2026 at about $2.5B and roughly 18.5x EBITDA, and Sila Services sold at about $1.7B. A single plumbing company does not receive those multiples, but they explain why platforms can pay 6x to 8x for add-ons and still make the math work.

How do I move my plumbing business into a higher tier?

Reduce owner dependence so the business runs without you, qualify a backup master plumber so it does not depend on your license, build recurring maintenance revenue toward 30%, and add a commercial contract base. These are the levers that move you from the bottom of a tier toward the top, and sometimes into the next tier entirely.