---
title: "Plumbing Buyer List 2026: PE Platforms, Strategics & Sponsors"
description: "The full 2026 plumbing acquirer list - Apex Service Partners, Wrench Group, Roto-Rooter, Sterling Group, plus PE-backed regional roll-ups and search funds. Deal-size targeting and sourcing channels."
slug: "plumbing-buyer-list"
canonical: "https://mainstreetwealth.ai/resources/plumbing-buyer-list"
collection: "resources"
collection_name: "M&A Resources & Insights"
author: "Sukhrobjon Ismoilov"
category: "market-trends"
date_published: "2026-06-08T14:58:06.938Z"
date_modified: "2026-06-08T14:58:07.108Z"
token_estimate: 3224
source: "https://mainstreetwealth.ai/resources/plumbing-buyer-list.md"
---

# Plumbing Buyer List 2026: PE Platforms, Strategics & Sponsors


> The full 2026 plumbing acquirer list - Apex Service Partners, Wrench Group, Roto-Rooter, Sterling Group, plus PE-backed regional roll-ups and search funds. Deal-size targeting and sourcing channels.

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

This is the working buyer list we maintain for sell-side plumbing engagements. It complements our [strategic buyer landscape](/resources/plumbing-strategic-buyer-landscape) breakdown - that page is the qualitative read; this one is the operating list. For the broader cluster, start with our [plumbing industry overview](https://mainstreetwealth.ai/industries/plumbing). For closed-deal patterns, see our [recent transactions](https://mainstreetwealth.ai/case-studies/).

> **Headline:** Approximately **800 mechanical, electrical, and plumbing companies** have been acquired by private equity since 2022 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). **Apex Service Partners alone closed roughly 60 add-ons in 2025** ([PitchBook via Alpine Investors](https://pitchbook.com/news/articles/alpine-targets-1b-fund-to-invest-in-its-own-businesses)).

The active plumbing acquirer universe in 2026 breaks into five buyer categories, each with different deal-size sweet spots, integration approaches, and typical deal mechanics.

## Category 1: National PE-backed multi-trade platforms

These are the dominant aggregators. They underwrite continuously and bid on nearly every quality plumbing target. Most operate a tri-trade or multi-trade model that bundles plumbing with HVAC and electrical.

| Platform | Sponsor | Deal-size sweet spot | Geographic focus |
|---|---|---|---|
| **Apex Service Partners** | Alpine Investors / Apollo (~$10B EV, May 2026) | $5M to $50M+ revenue | National, with current emphasis on Sun Belt and growth metros |
| **Wrench Group** | Leonard Green & Partners | $10M to $100M+ revenue | Atlanta, Dallas, Houston, Phoenix, expanding |
| **Sila Services** | Goldman Sachs | $5M to $30M revenue | Northeast, Mid-Atlantic, Midwest |
| **Authority Brands** | Apax Partners | Multi-brand franchise platform | National (includes One Hour Plumbing-equivalents) |
| **Hoffman Family of Companies** | Family-held / PE-equivalent | MEP roll-up | Mid-market |

Recent representative transactions:
- **May 2026:** Apollo announced a [strategic minority investment in Apex Service Partners at a ~$10B 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/).
- **2019:** Investcorp sold Wrench Group to [Leonard Green & Partners](https://leonardgreen.com/investcorp-announces-sale-of-the-wrench-group-to-leonard-green/).

For the qualitative read on each platform and how to position for them, see [Apex, Wrench, Roto-Rooter and the plumbing strategic buyer landscape](/resources/plumbing-strategic-buyer-landscape).

## Category 2: Public residential-service platforms

The publicly-traded benchmark for residential plumbing is **Chemed Corporation's Roto-Rooter segment**, which reported **$220.6M revenue and $47.5M Adjusted EBITDA in Q4 2025** ([Chemed Q4 2025 results](https://markets.ft.com/data/announce/detail?dockey=1330-9660266en-7H9K5BO0Q3KI0612LMPAR2E4TM)).

- **Roto-Rooter** has been actively buying back franchise territories. In March 2026, Roto-Rooter bought the **San Francisco and Fort Worth franchise territories for ~$20.6M** ([Yahoo Finance](https://finance.yahoo.com/markets/stocks/articles/does-roto-rooter-urban-franchise-111358483.html)). Note: in Q1 2026, Chemed announced **plans to divest Roto-Rooter** per [Investing.com coverage of Chemed's Q1 2026 presentation](https://www.investing.com/news/company-news/chemed-q1-2026-presentation-reveals-rotorooter-divestiture-plans-93CH-4636299).
 - **What this means for sellers:** Roto-Rooter as an acquirer is currently in transition. Until the divestiture is complete, Roto-Rooter remains an active acquirer of complementary residential plumbing operations and franchise territories.

## Category 3: Public commercial / mechanical contractor platforms

The publicly-traded benchmarks for commercial plumbing and mechanical contracting:

- **Comfort Systems USA (NYSE: FIX).** Backlog reached **$12.45 billion at Q1 2026, up 80.8% YoY** per [Yahoo Finance](https://finance.yahoo.com/markets/stocks/articles/comfort-systems-12-45b-backlog-143300429.html). The backlog is heavily weighted toward data-center construction, with **technology customers representing 45% of revenue mix** per [TIKR coverage](https://www.tikr.com/blog/comfort-systems-stock-beats-q4-estimates-by-39-is-the-1670-streets-target-too-low?). Comfort Systems is an active acquirer of regional mechanical contractors.
- **Limbach Holdings (NASDAQ: LMB).** A national MEP-services platform with [21 locations and 1,600+ experts](https://www.limbachinc.com/), focused on mission-critical buildings. Limbach's business mix has shifted toward maintenance / service and away from pure construction, which buyers value at a premium.

For sellers in **commercial plumbing or mechanical contracting**, Comfort Systems USA and Limbach Holdings represent the most aggressive public-platform comp.

## Category 4: PE-backed regional roll-ups

Below the national platforms, a deep set of PE-backed regional operators with state or multi-state mandates. They often outbid the national platforms on smaller transactions because integration cost is lower.

Representative platforms and recent activity:

- **The Sterling Group / L&S Mechanical.** 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)).
- **Green Heron Partners / Regency Plumbing.** Houston-based commercial plumbing platform ([PrivSource](https://www.privsource.com/acquisitions/private-equity-backed-acquisitions/plumbing)).
- **Texas-anchored PE-backed roll-ups.** [PrivSource currently tracks Texas as the most active state for plumbing acquisition mandates](https://www.privsource.com/acquisitions/plumbing/state/texas).
- **Multi-state Sun Belt operators with active tuck-in mandates** - Florida, Texas, Arizona, Nevada, North Carolina, Tennessee, Georgia.

For sellers in the **$1.5M to $5M EBITDA range**, regional roll-ups often produce the cleanest process: faster timelines, more flexibility on deal structure (rollover equity, earnouts, seller financing), and a single decision-maker rather than a committee.

## Category 5: Independent sponsors and search funds

For plumbing sellers in the **$300K to $2M EBITDA range**, independent sponsors and search funds are often the cleanest path.

The economics:
- Typically **2.9x to 5.0x SDE/EBITDA** depending on recurring-revenue mix ([Regalis Capital benchmark](https://learn.regaliscapital.com/what-is-my-plumbing-company-worth/))
- Faster process than a strategic auction (60 to 90 days from LOI to close)
- More flexibility on deal structure
- Operator-led: the buyer typically intends to be the next CEO

Active sourcing channels for independent sponsors:
- [SearchFunder](https://www.searchfunder.com/) (the largest searcher network)
- [Stanford GSB ETA database](https://www.gsb.stanford.edu/faculty-research/centers-initiatives/ces/research/search-funds/primer)
- [Harvard Business School Search Fund Resources](https://www.hbs.edu/entrepreneurship/Pages/etaresources.aspx)

## How buyers segment by deal size

| Seller EBITDA | Best-fit buyer categories |
|---|---|
| **$200K to $500K** | Search funds, regional consolidators |
| **$500K to $1.5M** | Search funds, independent sponsors, regional consolidators |
| **$1.5M to $5M** | All five categories competing - most active deal zone |
| **$5M to $15M** | Apex, Wrench, Sila, Sterling, Comfort Systems (commercial), Limbach (commercial) |
| **$15M+** | National PE platforms, public platforms, large strategic LBOs |

For the multiple ranges associated with each tier, see [plumbing EBITDA multiples by deal size](/resources/plumbing-ebitda-multiples). For why bigger deals price higher, see [how PE values plumbing contracts](/resources/how-pe-values-plumbing-contracts).

## Outreach mechanics

A specialized advisor running a sell-side process for a $1M+ EBITDA plumbing business will typically:

1. **Build a pre-qualified target list of 60 to 100 acquirers** drawn from the five categories above.
2. **Send anonymized teasers** under email cover. Plumbing buyers underwrite from inboxes, not from LinkedIn.
3. **Execute NDAs** with the 25 to 40 buyers who request more information.
4. **Distribute the CIM** to the NDA-signed list.
5. **Manage the bid waterfall** through indications of interest, management meetings, and final LOIs.

Buyer-list discipline is the operational difference between a 5.5x process and a 7.5x process. Owners who go directly to one or two strategics consistently leave **1.5 to 2.0x of EBITDA multiple** on the table.

## What to ask any buyer before engaging

- **Who is on the deal team?** A direct line to a VP or partner-level decision-maker is the cleanest signal of buyer seriousness.
- **What is your current platform integration approach?** Some platforms preserve brand and ops; others fully consolidate. The answer affects every employee in your business post-close.
- **What is your typical close timeline?** Anything beyond 120 days from LOI is a yellow flag.
- **What is your current pipeline?** A buyer with five LOIs out is bidding for capital allocation, not for your deal.
- **(For Texas sellers specifically)** Do you have an existing RMP designation in our state, or will you need our seller to remain RMP through transition? This avoids late-process surprises on license continuity.

## The clean takeaway

- The plumbing acquirer universe is deep but bifurcated: residential-service buyers (Apex, Wrench, Sila, Roto-Rooter) and commercial-mechanical contractor buyers (Comfort Systems USA, Limbach Holdings) are largely separate buyer pools.
- **Run the right process for your business.** A residential-service-led shop should not be marketed primarily to Comfort Systems; a commercial-mechanical contractor should not be marketed primarily to Apex.
- **A specialized broker pays for itself** by enforcing buyer-list discipline and matching seller profile to buyer mandate. See our [plumbing industry overview](https://mainstreetwealth.ai/industries/plumbing).

## Primary sources

- [Apollo - Strategic Minority Investment in Apex Service Partners](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/)
- [PitchBook - Alpine Targets $1B Fund (Apex add-on count)](https://pitchbook.com/news/articles/alpine-targets-1b-fund-to-invest-in-its-own-businesses)
- [Leonard Green - Wrench Group Acquisition](https://leonardgreen.com/investcorp-announces-sale-of-the-wrench-group-to-leonard-green/)
- [PR Newswire - Sterling Group / L&S Mechanical](https://www.prnewswire.com/news-releases/the-sterling-group-completes-the-acquisition-of-ls-mechanical-301368492.html)
- [PrivSource - Top PE-Backed Plumbing Acquirers](https://www.privsource.com/acquisitions/private-equity-backed-acquisitions/plumbing)
- [PrivSource - Recent Plumbing Acquisitions in Texas](https://www.privsource.com/acquisitions/plumbing/state/texas)
- [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)
- [Investing.com - Chemed Q1 2026 Roto-Rooter Divestiture Plans](https://www.investing.com/news/company-news/chemed-q1-2026-presentation-reveals-rotorooter-divestiture-plans-93CH-4636299)
- [Yahoo Finance - Comfort Systems USA Q1 2026 Backlog](https://finance.yahoo.com/markets/stocks/articles/comfort-systems-12-45b-backlog-143300429.html)
- [Limbach Holdings](https://www.limbachinc.com/)
- [Contractor Magazine - PE and the MEP Trades](https://www.contractormag.com/management/article/55277446/solid-business-sense-private-equity-and-the-mep-trades)
- [Regalis Capital - What Is My Plumbing Company Worth?](https://learn.regaliscapital.com/what-is-my-plumbing-company-worth/)