Who Buys Plumbing Companies? The Four Buyer Groups, What Each Pays, and Which Fits Your Size

Four groups buy plumbing companies, and your earnings decide which of them will take your call. SBA-financed individuals and search funds buy on seller discretionary earnings (SDE). Local competitors and franchise systems buy on what your license, crews and customer list add to theirs. Private equity platforms price on EBITDA; one advisor's tiers put $1M to $3M of adjusted EBITDA at 4.5x to 6.5x, and Wrench Group add-ons typically run $1.5M to $5M of EBITDA.

In BizBuySell sold-business data for plumbing from 2021 to 2025, covering 226 reported listings, the SDE multiple ran 1.66x at the lower quartile, 2.24x at the median and 3.15x at the upper quartile. Median revenue was $1,174,514 and median SDE was $311,598. On the EBITDA side, Ad Astra Equity tiers plumbing multiples by size: 2.43x to 4.45x under $1M of adjusted EBITDA, 4.5x to 6.5x from $1M to $3M, 6.0x to 8.5x from $3M to $10M, and 8.5x to 14.0x and up above $10M.

Keep the two metrics apart. SDE is net profit plus one owner's full compensation plus documented add-backs. EBITDA is SDE minus a market-rate salary for the manager who replaces you. An SDE multiple applied to EBITDA, or the reverse, produces a number no buyer will sign. Run your own figures through both on the plumbing company valuation page before you talk to any of the four groups.

The platforms below are named as active plumbing acquirers, and each is backed by a financial sponsor that funds its add-ons.

Platforms buy at one multiple and are valued at a higher one. Ad Astra puts multi-trade home services bundles at 9x to 14x, Wrench Group add-ons at 6x to 8x on $1.5M to $5M of EBITDA, and the Apex platform anchor at roughly 20x platform EBITDA. The 9x to 14x figure applies to bundled multi-trade businesses. A plumbing-only shop should not anchor its ask there.

Worked example: a platform-size plumbing company

Take a company with $9,000,000 of revenue and $2,200,000 of EBITDA after paying a $150,000 general manager. Its SDE would be $2,350,000, but platforms price EBITDA, so the math uses $2,200,000.

• At the $1M to $3M tier of 4.5x to 6.5x EBITDA: $9,900,000 to $14,300,000.
• At the 6x to 8x Wrench add-on range, which covers $1.5M to $5M of EBITDA: $13,200,000 to $17,600,000.

Headline price is only half the offer. On a $13,200,000 deal, the PE structure norms in the same advisor data (cash at close 75% to 90%, seller note 0% to 10%, earnout 0% to 15%, rollover 5% to 20%) put $9,900,000 to $11,880,000 in cash at closing, up to $1,980,000 in an earnout, and $660,000 to $2,640,000 rolled into platform equity. In diligence the platform will ask for revenue split between service, replacement and new construction, the count of active service agreements, technician turnover, and fleet age. Deferred truck refresh comes off the price, not off EBITDA, so a $150,000 fleet backlog cuts the check by $150,000 rather than by $150,000 times the multiple.

A strategic buyer values your company by what it adds to an operation it already runs: more trucks in a territory, more service agreements, more licensed plumbers. Two kinds show up. Franchise strategics such as Authority Brands, which owns Benjamin Franklin Plumbing and is backed by Apax Partners, add locations to a branded system. Local strategics, meaning a competing plumbing shop or an HVAC company adding plumbing, buy to fill routes and hire technicians they cannot recruit.

Strategics pay for the drivers that make your company easy to fold in. Geographic density in a top-50 US metro is worth +0.5x to +1.5x. Recurring service agreements above 30% of revenue add +0.5x to +1.5x. Technician turnover above 30% is a risk factor, because a strategic buying for labor loses the deal thesis if your plumbers walk.

Why a strategic clears licensing faster

Plumbing contractor licenses are generally not transferable. In an asset purchase the buyer needs its own contractor license and a master-plumber qualifier. In a stock purchase the license continues only if the qualifier stays. A licensed local competitor already holds both, which removes a closing condition an outside buyer has to solve. State rules differ: Texas consolidated plumbing licensing under TDLR, with separate exam and qualification tracks, so read your own state's requirements before you accept an LOI. The deal structure shifts taxes and liabilities as well, covered in asset sale vs stock sale.

A competitor financing your purchase with an SBA loan qualifies as a Business Expansion under SOP 50 10 8.1, tested at 1.15x debt service coverage instead of the 1.25x that applies to a new owner, and its lender may reduce the 10% equity injection on a documented finding of sufficient liquidity, which lets a strategic buyer stretch further on the same earnings.

Yes. Plumbing companies are SBA eligible, the 7(a) loan caps at $5,000,000, and SBA-financed individuals fit shops near the median SDE of $311,598 in the BizBuySell data. No source measures which buyer type closes the largest share of plumbing deals, so judge fit by size and structure rather than by headcount of buyers.

Worked example: an SBA-size plumbing company

Take a company with $1,200,000 of revenue and $280,000 of SDE. Applying the sold-business SDE multiples to SDE:

Every price in that table is above $350,000, so under SOP 50 10 8.1 the buyer's lender must order an independent business valuation from a Qualified Source (ASA, CBA, ABV, CVA or BCA) prepared for the lender. A valuation you commission does not count. Total acquisition debt, the SBA loan plus any seller note not on full standby, cannot exceed that valuation. If the appraiser lands below your agreed price, the gap is funded by buyer equity or full-standby debt, or the price comes down.

What the lender checks

• Coverage. SBA requires at least 1.25x debt service coverage for buying a business, measured on historical EBITDA for the last fiscal year or a two-year average. Projections cannot meet it. The buyer's replacement salary comes out of your SDE before the test, so a shop at $280,000 of SDE supports less debt than the SDE figure suggests. Model it in the SBA 7(a) loan calculator.
• Equity. A complete change of ownership needs 10% of total project cost. Up to half can be a seller note on full standby, so 5% buyer cash plus a 5% standby note is a common structure.
• Terms. The acquisition portion amortizes over no more than 10 years. With prime at 7.00% since September 17, 2026, the variable-rate maximum on loans over $350,000 is 10%.

Read the standby note carefully. A note on full standby receives no principal or interest for the entire life of the 7(a) loan; interest can accrue and is paid after the SBA loan is repaid. You are lending that money for up to 10 years with no payments.

Search funds and independent sponsors

Searchers and independent sponsors buy at the upper end of the SDE range and into the under-$1M EBITDA tier of 2.43x to 4.45x. They need a business that runs without you. An owner replaceable within 60 days of close adds +1.0x to +2.0x; an owner on the truck as sole rainmaker costs -1.0x to -2.0x. If you hold the only master license, expect a -0.25x to -0.5x discount and a request that you stay on as qualifier until the buyer's own licensed plumber is in place.

Pick the buyer by matching your earnings to the group that can finance you, then by what you want at closing. Use these thresholds:

• SDE near or below the $311,598 median: SBA-financed individuals and local strategics. Expect an SBA appraisal, a 1.25x coverage test, and a request for a seller note.
• SDE around the $545,500 upper quartile, EBITDA under $1M: search funds, independent sponsors and strategics compete. A non-founder manager moves you toward the top of the range.
• Adjusted EBITDA of $1M to $3M and up: PE platforms join, at 4.5x to 6.5x and above. Prices above the $5,000,000 SBA cap push individual buyers out unless they bring outside equity.

Match the structure to your goal

Fix what lowers your multiple before any buyer sees the numbers. A single customer above 20% of revenue costs -0.5x to -1.0x, and above 40% it can kill the deal or push it into a heavy earnout. New-construction revenue above 50% costs -0.5x to -1.0x. A master-plumber bench with a non-founder GM adds +1.0x to +2.0x.

Munera does not list businesses publicly. Your company goes only to buyers who have signed an NDA and been vetted for capital and fit, on a blind profile until they qualify. If your company matches one of Munera's active buyer clients, the buyer pays Munera's fee and you pay nothing; otherwise the fee is a success fee at closing with a $5,000 engagement deposit credited against it. From decision to signed LOI runs 3 to 6 months, and LOI to close runs 60 to 90 days depending on financing and diligence.