---
title: "Plumbing EBITDA Multiples by Deal Size (2026)"
description: "Plumbing EBITDA multiples by deal size in 2026. Residential service vs. commercial vs. mechanical contractor benchmarks. PE platform comps, BizBuySell data, and the strategic buyer premium."
slug: "plumbing-ebitda-multiples"
canonical: "https://mainstreetwealth.ai/resources/plumbing-ebitda-multiples"
collection: "resources"
collection_name: "M&A Resources & Insights"
author: "Sukhrobjon Ismoilov"
category: "valuation"
date_published: "2026-06-08T15:00:20.747Z"
date_modified: "2026-06-08T15:00:20.920Z"
token_estimate: 3418
source: "https://mainstreetwealth.ai/resources/plumbing-ebitda-multiples.md"
---

# Plumbing EBITDA Multiples by Deal Size (2026)


> Plumbing EBITDA multiples by deal size in 2026. Residential service vs. commercial vs. mechanical contractor benchmarks. PE platform comps, BizBuySell data, and the strategic buyer premium.

**Author:** Sukhrobjon Ismoilov  
**Published:** 2026-06-08  
**Updated:** 2026-06-08  
**Canonical:** https://mainstreetwealth.ai/resources/plumbing-ebitda-multiples

For a full overview of the trade and the buyer landscape, see our [plumbing industry overview](https://mainstreetwealth.ai/industries/plumbing). For closed-deal patterns and tombstones, see our [recent transactions](https://mainstreetwealth.ai/case-studies/). This page is the single source of truth on the multiple ranges themselves: what's typical, what drives the spread, and where 2024 to 2026 transactions actually closed.

> **Headline:** Owner-operated plumbing businesses transact at **2.9x to 5.0x EBITDA or 2.2x to 3.5x SDE** at the small end ([Regalis Capital](https://learn.regaliscapital.com/what-is-my-plumbing-company-worth/)). Scaled service-led platforms with $3M+ EBITDA routinely clear **6.5x to 9.0x EBITDA**. Multi-trade platforms or commercial-mechanical contractors can reach into the low double digits as part of larger PE roll-ups.

## The 2026 multiple ranges

| Business profile | Valuation metric | Typical multiple range |
|---|---|---|
| **Sub-$500K EBITDA, owner-operated, mostly service** | SDE | **2.2x to 3.5x** ([Regalis Capital](https://learn.regaliscapital.com/what-is-my-plumbing-company-worth/)) |
| **$500K to $1.5M EBITDA, residential service-led** | SDE / EBITDA | **3.5x to 5.0x** |
| **$1.5M to $5M EBITDA, recurring service >20%, route density** | EBITDA | **5.0x to 7.5x** |
| **$5M+ EBITDA, platform-quality, GM-led, multi-location** | EBITDA | **7.0x to 10.0x+** |
| **Commercial mechanical contractor, project-led** | EBITDA on backlog | Varies; backlog quality dominates |
| **Public benchmark - Roto-Rooter Q4 2025** | EBITDA margin | **21.5%** ($47.5M EBITDA on $220.6M revenue, [Chemed Q4 2025](https://markets.ft.com/data/announce/detail?dockey=1330-9660266en-7H9K5BO0Q3KI0612LMPAR2E4TM)) |
| **Public benchmark - Comfort Systems USA backlog (Q1 2026)** | Backlog | **$12.45 billion**, +80.8% YoY ([Yahoo Finance](https://finance.yahoo.com/markets/stocks/articles/comfort-systems-12-45b-backlog-143300429.html)) |
| **Mid-market PE benchmark (cross-sector, 2025)** | TEV/EBITDA | **7.2x average** ([GF Data via Forvis Mazars](https://www.forvismazars.us/forsights/2025/09/q2-2025-middle-market-m-a-insights-signs-of-potential-recovery)) |

For the smaller end of the market, sub-$5M-revenue plumbing transactions, [BizBuySell](https://www.bizbuysell.com/learning-center/valuation-benchmarks/plumbing/) is the cleanest public dataset: median sale price grew from **$450K in 2021 to $640K in 2024**, a ~40% increase. [BizBuySell data summarized via FinancialContent](https://markets.financialcontent.com/stocks/article/marketersmedia-2026-5-29-texas-plumbing-business-sales-growth-framework-and-exit-readiness-guide-released) shows median sale prices **+46% from 2022 to 2025**.

## What moves a plumbing business across the multiple bands

A $1M-EBITDA plumbing company can transact at 3x or at 9x. The spread tracks six buyer-underwriting variables.

### 1. Service vs. project mix (the single biggest lever)
- **Residential service-led** (drain cleaning, water heater replacement, leak repair, fixture replacement, sewer repair): trades at the upper end of every range.
- **Commercial service** (multifamily, hospitality, healthcare, food-service): generates higher-margin recurring revenue.
- **New-construction plumbing** (single-family or multifamily rough-in / trim-out): cyclical, lower-margin, trades at a meaningful discount.
- **Project-based commercial contracting** (mechanical contracting, ground-up new construction, retrofits): valued more like a contractor than a service business; backlog quality dominates the conversation. Comfort Systems USA's $12.45B backlog at Q1 2026 (+80.8% YoY, [Yahoo Finance](https://finance.yahoo.com/markets/stocks/articles/comfort-systems-12-45b-backlog-143300429.html)) is the public-comp signal of how aggressively buyers are pricing data-center-driven mechanical project pipelines.

### 2. Recurring service-agreement attach rate
Plumbing has lower native recurring revenue than HVAC or pest control because most plumbing demand is event-driven. But operators who have built service-agreement programs (annual drain inspections, water-quality testing, water-heater maintenance, sewer-line warranty) above 20% recurring revenue see **0.5 to 1.0x higher multiples** than peers without them.

### 3. Average ticket and revenue per truck
- **$600K+ revenue per service technician** is a platform-quality threshold for residential service.
- **Average ticket above $750** signals strong fixture-and-equipment-replacement mix.

Below those thresholds, buyers underwrite operational improvement potential into the offer.

### 4. License continuity (the plumbing-specific risk)
The Responsible Master Plumber (RMP) designation in Texas and the master plumber license in most other states must travel post-close. Sellers who are the only company-designated RMP get discounted by 0.25 to 0.75x EBITDA unless a transition plan is documented.

### 5. Owner independence
A non-owner GM, dispatch lead, and field supervisors who run day-to-day reduces key-person risk. Owner-driven businesses get discounted by **0.5 to 1.5x EBITDA**.

### 6. Software stack
ServiceTitan, Housecall Pro, and FieldEdge produce diligence-ready exports. Spreadsheet-run businesses still transact, but with longer prep cycles and a typical 0.25 to 0.5x multiple discount.

For the deeper valuation framework that determines the EBITDA number itself, see our [plumbing business valuation guide](/resources/plumbing-business-valuation).

## Recent transaction data points

Public deal data in plumbing is concentrated in Chemed's Roto-Rooter segment disclosures, public-platform PE press releases, and trade press:

- **Apex Service Partners (May 2026).** [Apollo announced a strategic minority investment at a ~$10 billion enterprise valuation](https://www.apollo.com/institutional/insights-news/pressreleases/2026/05/apex-service-partners-and-alpine-investors-announce-strategic-mi), confirmed by [Reuters](https://www.reuters.com/legal/transactional/apex-service-partners-nears-minority-stake-sale-10-billion-valuation-source-says-2026-05-27/). Apex is a tri-trade (HVAC, plumbing, electrical) platform with **~60 add-on acquisitions in 2025** per [Alpine Investors via PitchBook](https://pitchbook.com/news/articles/alpine-targets-1b-fund-to-invest-in-its-own-businesses).
- **Roto-Rooter franchise buyouts (March 2026).** Chemed-owned Roto-Rooter acquired the **San Francisco and Fort Worth franchise territories for ~$20.6M total** ([Yahoo Finance](https://finance.yahoo.com/markets/stocks/articles/does-roto-rooter-urban-franchise-111358483.html)). The pricing benchmark is useful for valuing route-density-rich urban metros.
- **L&S Mechanical (2021, ongoing).** The Sterling Group's Houston-based tri-trade (plumbing, HVAC, electrical) platform serving Texas residential new-construction ([PR Newswire](https://www.prnewswire.com/news-releases/the-sterling-group-completes-the-acquisition-of-ls-mechanical-301368492.html)). The Sterling Group's continued Texas presence has anchored numerous Texas plumbing add-ons.
- **Wrench Group plumbing add-ons.** Leonard Green & Partners-backed Wrench has acquired multiple plumbing operations across Atlanta, Dallas, Houston, Phoenix, and other major metros since the 2019 platform formation ([Leonard Green press release](https://leonardgreen.com/investcorp-announces-sale-of-the-wrench-group-to-leonard-green/)).
- **MEP-trade volume (since 2022).** Approximately **800 mechanical, electrical, plumbing companies** acquired by PE per [Wall Street Journal coverage cited by Contractor Magazine](https://www.contractormag.com/management/article/55277446/solid-business-sense-private-equity-and-the-mep-trades).

## Strategic vs. financial buyer spread

Public strategics and well-capitalized PE platforms can pay **1 to 2x EBITDA more** than a smaller financial sponsor for the same business because:

- **Synergies are real.** Vendor purchasing leverage (Watts, Rheem, A.O. Smith, Sloan, plumbing-supply distributor relationships), route consolidation, technician redeployment, and back-office consolidation produce 200 to 400 bps of margin uplift on integrated operations.
- **Cost of capital is lower.** Apollo-backed Apex underwrites at a lower discount rate than a smaller PE fund. The May 2026 Apollo / Apex announcement at a ~$10B EV underscores how meaningful that capital-cost advantage has become.
- **Integration risk is lower.** A platform that has integrated 60+ acquisitions in a year (Apex's 2025 pace) runs a tighter playbook than a first-time integrator.

For the full strategic-buyer breakdown, see our [plumbing strategic buyer landscape](/resources/plumbing-strategic-buyer-landscape). For the operational outreach list, see the [plumbing buyer list](/resources/plumbing-buyer-list).

## How buyers normalize EBITDA before applying the multiple

The multiple range is meaningless without a defensible EBITDA number. Buyers normalize on:

- **Owner compensation.** Adjusted to a market-rate GM or president salary.
- **Personal expenses.** Vehicle, insurance, travel, family payroll, and similar items added back when documented.
- **One-time items.** Software migration costs, fleet refurbishment cycles, ERP transitions - typically added back with documentation.
- **Pulled-forward project revenue.** Commercial operators with large milestone-driven revenue spikes get smoothed.
- **Working-capital adjustments.** Most institutional buyers deliver a working-capital peg at close.
- **Customer concentration.** Concentration above 15% may trigger EBITDA discounts or earnouts, especially for commercial / multifamily property-management customers.

For the broader normalization framework, see [plumbing business valuation guide](/resources/plumbing-business-valuation).

## How to use this page

- **Setting expectations.** Use the table at the top to anchor your expectation conversation with co-owners, family, or counsel.
- **Identifying value-creation moves.** A 12-month window before going to market is enough time to lift recurring-agreement attach rate, retire owner-as-only-RMP dependency, and migrate to ServiceTitan. Each is a 0.25 to 1.0x multiple step.
- **Pricing the deal.** When you receive a teaser-stage indication of interest from a strategic, compare it to the table here and to the [plumbing buyer list](/resources/plumbing-buyer-list) before signing exclusivity.

## The clean takeaway

- Plumbing multiples are bimodal. A service-led shop with recurring agreements and clean RMP transition can clear 7x+ EBITDA. A project-heavy, owner-dependent shop transacts at 3x SDE.
- **Strategic buyers pay 1 to 2x EBITDA more than financial sponsors** on equivalent assets. Run a competitive process that includes both.
- **Backlog quality is a separate valuation conversation** for commercial / mechanical-contractor sellers. Comfort Systems USA's data-center-driven backlog ($12.45B at +80.8% YoY) is the public-comp signal that the most aggressive demand right now is for project pipelines tied to AI / data-center construction.
- **The Roto-Rooter EBITDA margin (21.5%)** is the public-comp residential-service benchmark. Operators below 12% have margin runway buyers will underwrite.
- Use this page in tandem with [plumbing business valuation](/resources/plumbing-business-valuation), [how PE values plumbing contracts](/resources/how-pe-values-plumbing-contracts), and the [plumbing buyer list](/resources/plumbing-buyer-list) to triangulate your specific number.

## Primary sources

- [Regalis Capital - What Is My Plumbing Company Worth?](https://learn.regaliscapital.com/what-is-my-plumbing-company-worth/)
- [BizBuySell - Plumbing Valuation Benchmarks](https://www.bizbuysell.com/learning-center/valuation-benchmarks/plumbing/)
- [Chemed Q4 2025 Results (Roto-Rooter segment)](https://markets.ft.com/data/announce/detail?dockey=1330-9660266en-7H9K5BO0Q3KI0612LMPAR2E4TM)
- [Yahoo Finance - Roto-Rooter Urban Franchise Buyout](https://finance.yahoo.com/markets/stocks/articles/does-roto-rooter-urban-franchise-111358483.html)
- [Yahoo Finance - Comfort Systems USA Q1 2026 Backlog](https://finance.yahoo.com/markets/stocks/articles/comfort-systems-12-45b-backlog-143300429.html)
- [Apollo - Strategic Minority Investment in Apex](https://www.apollo.com/institutional/insights-news/pressreleases/2026/05/apex-service-partners-and-alpine-investors-announce-strategic-mi)
- [Reuters - Apex Service Partners $10B Apollo Valuation](https://www.reuters.com/legal/transactional/apex-service-partners-nears-minority-stake-sale-10-billion-valuation-source-says-2026-05-27/)
- [PR Newswire - Sterling Group / L&S Mechanical](https://www.prnewswire.com/news-releases/the-sterling-group-completes-the-acquisition-of-ls-mechanical-301368492.html)
- [Leonard Green - Wrench Group Acquisition](https://leonardgreen.com/investcorp-announces-sale-of-the-wrench-group-to-leonard-green/)
- [Contractor Magazine - PE and the MEP Trades](https://www.contractormag.com/management/article/55277446/solid-business-sense-private-equity-and-the-mep-trades)
- [GF Data via Forvis Mazars - Q2 2025 Middle-Market M&A Insights](https://www.forvismazars.us/forsights/2025/09/q2-2025-middle-market-m-a-insights-signs-of-potential-recovery)
- [BLS - Plumbers, Pipefitters, and Steamfitters Occupational Outlook](https://www.bls.gov/ooh/construction-and-extraction/plumbers-pipefitters-and-steamfitters.htm)