Plumbing Business Valuation & EBITDA Multiples
What plumbing businesses actually sell for in 2026 — standalone add-ons at 4.0x–7.5x adjusted EBITDA, with multi-trade PE bundle pricing pushing 9x–14x for the right fit.
Updated 2026-06-05·14 min read·Construction & Specialty Contracting
Adjusted EBITDA multiple
4.0x – 7.5x
Typical: 5x · Sample: Aggregated from ClearlyAcquired, Breakwater M&A, and named PE add-on activity, Q4 2024 – Q2 2026
- Adj. EBITDA range
- 4.0x – 7.5x
- Typical $1–3M EBITDA deal
- 5.0x
- Apex/Apollo platform anchor (May 2026)
- ~$10B / ~20x
- Cash at close (PE platforms)
- 75–90%
Quick answer
Plumbing businesses typically sell for 4.0x to 7.5x adjusted EBITDA — but the headline understates a structural split. Standalone owner-operated plumbers cluster at 2.43x–4.45x; plumbers with branded service-agreement programs and a master-plumber bench beyond the owner clear 6x–7x [1]. Plumbers that fit the Apex / Sila / Wrench multi-trade buy-box — HVAC + plumbing + electrical in a top-50 US metro, $5M–$50M revenue — get pulled into platform pricing of 9x–14x because PE platforms monetize three trades on a single truck visit [6]. Apollo's May 28, 2026 ~$2B investment in Apex Service Partners at a ~$10B valuation reset the platform anchor for the entire bundle [3].
The four levers that move your number most: (1) service-agreement and membership penetration above 30%, (2) residential service-and-replacement mix vs new-construction exposure, (3) master-plumber bench depth beyond the owner, and (4) geographic density in a top-50 US metro. A residential plumber with 30%+ recurring drain-care and water-heater memberships, three master plumbers on staff, and operations in a top-50 MSA can earn 2–3 turns above an equivalent owner-on-truck shop [7].
Multiples by size
How plumbing business multiples shift with EBITDA size
The single biggest determinant of multiple is size. The same business at 4x sub-$1M EBITDA can fetch 7x once it crosses $5M — same operations, different buyer pool.
| Adjusted EBITDA range | Multiple range | What's typical here |
|---|---|---|
| Under $1M Adj. EBITDA | 2.43x – 4.45x | Owner-on-truck, service-call-heavy, no maintenance program, residential-only. Buyer pool: SBA-funded individual buyers, search funds, local consolidators. Heavy seller-note structure (15–25%); pure plumbing rarely attracts PE platform interest at this size unless bundled with HVAC. |
| $1M – $3M Adj. EBITDA | 4.5x – 6.5x | The most competitive band for pure plumbing. PE add-on candidates for multi-trade platforms; service-mix and recurring revenue percentage dominate where you land inside the band. Rollover equity 10–20% becomes standard. |
| $3M – $10M Adj. EBITDA | 6.0x – 8.5x | Platform-quality territory. Apex Service Partners, Sila Services, Wrench Group, Authority Brands, Founders Home Service Group, and Redwood Services compete. Multi-state licensing transferability becomes the diligence pivot. |
| $10M+ Adj. EBITDA | 8.5x – 14.0x+ | True multi-trade platform pricing. Multi-market footprint, documented systems, non-founder management. Apex/Apollo's ~20x platform anchor sits above this band — best-in-class multi-trade bundle assets clear mid-to-high teens at platform-recap scale. |
Interactive estimate
Estimate the range for your business
Move the sliders. The estimate reflects how each driver pushes the multiple up or down inside the bands above. Use this as a planning anchor — not a sale price.
Drain-care plans, water-heater maintenance, commercial backflow MSAs are the recurring revenue PE platforms underwrite. Greater than 30% moves you to the top of the band; greater than 50% earns platform multiples even at modest EBITDA.
Residential service-and-replacement commands premium multiples; new-construction-heavy plumbers trade at the bottom of the band due to cyclical project revenue. A 70/30 residential-service tilt earns roughly one turn over the inverse.
Multi-state licensing transfers and continuing operations post-close require master plumbers other than the seller. Three or more on staff plus a documented apprentice ladder de-risks the post-close transition; license held only by owner caps cash at close and triggers earnout.
Residential plumbing naturally avoids concentration. Commercial or property-management plumbing with one GC or REIT at 20%+ triggers multiple compression; 40%+ is a deal-killer or earnout-heavy structure.
Estimated enterprise value
$6.0M – $9.0M
Implied multiple: 4.0x – 6.0x Adjusted EBITDA
This is a planning estimate, not a formal valuation. Real-world ranges narrow against EBITDA quality, deal structure (cash vs rollover vs earnout), regional buyer presence, and licensing transferability. Ad Astra delivers advisor-grade ranges under USPAP/SSVS standards.
Value drivers
What moves the multiple, specific to plumbing business
Recurring service agreements above 30%
+0.5x – 1.5xDrain-care plans, water-heater maintenance programs, and commercial backflow MSAs are the recurring revenue PE platforms underwrite at near-SaaS multiples [1][2]. The contracted renewal mechanic and known service-conversion rate make this revenue fundamentally different from one-off call revenue. Plumbing's industry baseline is 10–20% recurring — anything above 30% is top-quartile and moves you toward the upper half of the multiple band. Above 50%, you enter platform-pricing territory even at modest absolute EBITDA [8].
Residential service-and-replacement mix
+0.5x – 1.0xResidential service and replacement is higher gross margin, recession-resilient (drain failures and water-heater replacements are non-deferrable), and steady year-round versus the lumpiness of new-construction project schedules [1]. Buyers explicitly model the revenue mix and discount new-construction dollars at the cycle. A 70/30 residential-service-to-install split earns a premium over the inverse; 50/50 sits at the category median. Residential service concentration above 70% is a platform buy-box qualifier for Apex, Sila, and Wrench [6].
Master-plumber bench and GM in place
+1.0x – 2.0xWith a ~110,000 licensed-technician deficit across US home trades, a bench of three or more master plumbers beyond the owner is now a discrete underwriting asset — not just a diligence check [7]. Multi-state licensing transfers and continuity of operations post-close require master plumbers that survive the seller's departure. A documented apprentice-to-journeyman-to-master pipeline, combined with a non-founder GM in dispatch and sales, de-risks transition and commands the highest single value premium in plumbing M&A [2]. This lever and the owner-dependency drag are the same coin.
Geographic density in a top-50 US metro
+0.5x – 1.5xApex Service Partners' published buy-box is explicit: residential HVAC + plumbing + electrical businesses in the top-50 US markets with $5M–$50M revenue [6]. Plumbers operating in top-50 MSAs match the density-routing economics that PE platforms underwrite — single-metro route density supports technician utilization above 70% and sub-30-minute response time. Single-metro plumbers outside the top 50 lose roughly one turn to in-bracket peers in major metros [2][8]. Sun Belt and high-growth metros (Charlotte, Phoenix, Tampa, Austin) are the highest-demand corridors right now.
Owner replaceable within 60 days post-close
+1.0x – 2.0xOwner-dependence is the single biggest drag in all trades M&A; its removal is the single biggest lift. A promoted or hired GM 18+ months pre-sale is empirically worth 1–2 turns — buyers price the risk of a key-person departure heavily because post-close customer and technician attrition is the most common deal disappointment [8]. The signal buyers need: non-owner GM running daily ops, non-owner service manager handling dispatch and technician scheduling, and no single customer whose contract requires the founder's signature.
Owner on the truck and sole rainmaker
-1.0x – 2.0xOwner-dependent plumbers — where the owner drives a service truck, holds the top customer relationships, and is the only licensed master plumber — trade 1–2 turns below the industry average [1][8]. This is the highest-leverage failure mode in plumbing M&A. Buyers structure against it with earnouts and escrow holdbacks, or simply walk away. The fix requires 12–18 months minimum: promote a journeyman to master, hire a service coordinator, and shift customer relationships to a non-owner point of contact before starting the sale process.
Single customer above 20% of revenue
-0.5x – 1.0xA single GC, REIT, or property-management firm at 20%+ of revenue triggers earnout structures and cash-at-close haircuts across all PE platforms [8]. Above 40%, most platform buyers pass outright or require multi-year earnout coverage for the concentration. Pure residential plumbing businesses with 1,000+ small accounts naturally avoid this risk — it is almost exclusively a problem for commercial and property-management-focused plumbers. Track top-10 customer revenue share quarterly and start diversifying 18+ months before a planned sale.
New-construction-heavy revenue mix
-0.5x – 1.0xProject work is cyclical, lower margin, and historically more exposed to housing-cycle downturns [1][2]. Plumbing companies above 50% new-construction revenue trade closer to specialty-construction multiples (4x–5.5x) than to home-service multiples. Buyers explicitly model the mix and apply a cyclicality discount to project revenue. The migration path: build out a residential service-and-replacement arm and a branded maintenance program — accept lower top-line growth in exchange for margin quality and a recurring base that survives a housing slowdown.
Deferred fleet capex and technician turnover above 30%
-0.25x – 0.75xService trucks 10+ years old, overdue test equipment, and above-30% annual technician turnover all trigger QoE normalization haircuts [8][9]. Buyers bake the future capex bill into the offer price — a $150,000 deferred fleet refresh comes directly out of the headline EV. Turnover above 30% signals a culture or compensation problem that buyers price as a post-close retention risk. Establish a documented 5–7 year truck replacement schedule and a technician retention bonus program at least 12 months pre-sale to neutralize both adjustments.
Buyer landscape
Who is actively buying plumbing business
Named PE platforms, strategic acquirers, and consolidators active in the space in the last 12 months. Multiples paid by these buyers anchor the high end of our range.
Apex Service Partners
Alpine Investors + Partners Group; minority investment from Apollo Funds at ~$10B valuation, announced May 28, 2026, expected close Q4 2026
Largest US residential multi-trade platform (HVAC + plumbing + electrical) — 75 brands across 46 states, 13,000+ employees, $3B+ revenue — paying platform multiples for top-50-metro add-ons with a recurring service base.
- Apollo ~$2B minority investment at ~$10B EV (~20x platform EBITDA), announced May 28, 2026
- We Care Plumbing Heating & Air — Dec 1, 2025 (most recent named plumbing-led add-on per PitchBook)
- ~60 HVAC/plumbing/electrical add-ons completed in 2025 alone
Sila Services
Goldman Sachs Alternatives (PE-to-PE recap from Morgan Stanley Capital Partners, ~$1.5B early 2025)
Residential HVAC + plumbing + electrical roll-up paying platform multiples for $2M+ EBITDA targets with a non-founder GM and 20%+ maintenance plan base.
- NEOH acquisition Q2 2026 — includes Coblentz Plumbing Solutions and Bee's Plumbing brands plus Trade Masters Academy
- 20+ HVAC/plumbing/electrical add-ons across the East Coast and Midwest
Wrench Group
Leonard Green & Partners (prior: Tower Three, Audax)
One of the original HVAC + plumbing roll-ups; 25 brands across 27 markets, recapped at $1B+ EV; add-ons typically $1.5M–$5M EBITDA at 6x–8x.
- 25 brands operating across 27 US markets
- Recapped by Leonard Green at reported $1B+ enterprise value in 2022
Authority Brands
Apax Partners
Owns Benjamin Franklin Plumbing franchise system plus Mister Sparky (electrical) and One Hour Heating & Air — active acquirer of corporate plumbing locations and territory rights across all three trades.
- Benjamin Franklin Plumbing franchise system — 400+ US territories across the US
- Active acquirer of corporate plumbing locations and franchise territory rights
Redwood Services
Altas Partners
Residential trades roll-up across HVAC + plumbing + electrical in mid-tier US metros; pays platform multiples for cross-trade assets with documented service revenue and non-founder GM.
- Multiple HVAC/plumbing/electrical add-ons in mid-tier US metros
- Active in Southeast and Mid-Atlantic residential service markets
Founders Home Service Group
Kompass Kapital
Emerging Southeast home-services platform targeting geographic density plays in the Carolinas and adjacent markets with master-licensed technician headcount as a core acquisition criterion.
- AAA City Plumbing — May 1, 2026 (Rock Hill SC / Charlotte NC) via Viking Mergers & Acquisitions
- Active acquirer of residential plumbing and home-service businesses in the Southeast
Right Time Group
Gryphon Investors
Canadian-rooted HVAC, plumbing, and electrical platform expanding into the US Midwest and Northeast; multi-trade add-ons with recurring membership base.
- 20+ trade-business add-ons in North America
- US expansion focused on Midwest and Northeast residential service markets
ARS / Rescue Rooter
Charlesbank (American Residential Services)
Established residential HVAC and plumbing dealer network across 70+ branches in 20 states; acquires regional dealers to plug into national service and dispatch network.
- Operates 70+ branches across 20 US states
- Selective acquirer of residential HVAC and plumbing businesses fitting national brand standards
Deal structure
Headline price is one number. The structure is the deal.
Headline multiple gets the press release. The actual outcome is the structure — how consideration splits across cash at close, rollover equity, earnout, and seller paper. In plumbing, PE platforms almost universally require 10–20% rollover equity; that is not negotiable at Apex, Sila, Wrench, or Authority Brands. Trade rollover percentage for cash percentage carefully — the post-close illiquidity risk is asymmetric for sellers over 60 [8].
Below is the typical structure for plumbing platform add-ons and stand-alone deals in the $1M–$10M EBITDA range, 2024–2026. Platform deals at the top of the range skew toward institutional cash (80–90%); add-ons near the bottom skew toward seller financing and earnouts [8].
Typical breakdown
- Cash at close
- 75–90%
- Rollover equity
- 5–20%
- Earnout
- 0–15%
- Seller note
- 0–10%
- Working capital adjustment
- ±2–4%
Senior debt (3.5–5.0x EBITDA) plus PE equity check. Platform deals lean 80–90%; add-ons sit 75–82%. Cleaner than roofing (65–85%) due to non-storm-cycle revenue stability.
Mandatory at Apex, Sila, Wrench, and Authority Brands. Sized to align incentives through the 3–5 year platform hold period. Model both base case and second-bite upside if the platform recap clears at 15x.
Performance-contingent over 18–36 months, tied to service-agreement member retention or EBITDA targets. More common when the owner is the rainmaker, the sole licensed master plumber, or when concentration exceeds 20%.
Junior subordinated, 3–7 year amortization, mid-single-digit interest. Common on sub-$1M EBITDA add-ons funded with SBA buyer overlay.
True-up at closing against a negotiated working-capital peg. Always contested in plumbing because inventory (water heaters, fixtures) is non-trivial — pre-negotiate the peg before LOI.
Recent comps (anonymized)
Representative plumbing business transactions
| Profile | Closed | Multiple | Buyer | Structure |
|---|---|---|---|---|
| Apex Service Partners / Apollo platform minority recap. ~$500M EBITDA; 75 brands across 46 states; HVAC + plumbing + electrical. Platform-tier anchor — not a typical single-plumber outcome. | 2026 Q4 (announced May 28, 2026) | ~20x | PE platform recap (Apex Service Partners — Alpine Investors + Apollo Funds) | Minority equity (>20%), Alpine reinvests, management rolls |
| Founders Home Service Group acquired AAA City Plumbing (Rock Hill SC / Charlotte NC). Southeast platform entry; terms undisclosed. Advisor: Viking Mergers & Acquisitions. | 2026 Q2 (May 1, 2026) | Undisclosed | PE platform (Founders Home Service Group — Kompass Kapital) | Terms undisclosed |
| Sila Services acquired NEOH — Ohio multi-brand platform including Coblentz Plumbing Solutions and Bee's Plumbing plus Trade Masters Academy. Terms undisclosed. | 2026 Q2 | Undisclosed | PE platform (Sila Services — Goldman Sachs Alternatives) | Terms undisclosed |
| Apex Service Partners acquired We Care Plumbing Heating & Air. Most recent named plumbing-led Apex add-on; cross-trade HVAC+plumbing fit was the acquisition wedge. | 2025 Q4 (Dec 1, 2025) | Undisclosed | PE platform (Apex Service Partners — Alpine Investors + Partners Group) | Typical Apex structure: ~80% cash / ~15% rollover / 0–5% earnout |
| Regional plumbing add-on to multi-trade platform (Illustrative). $1.5M EBITDA; 28% service-agreement base; 3 master plumbers on staff; single Sun Belt metro. | 2025 Q3 | 6.0x | PE platform add-on (Apex / Sila / Wrench class) | 80% cash / 15% rollover / 5% earnout (12-month member retention) |
| Southeastern $1–3M EBITDA archetype (Illustrative). $2.0M EBITDA; 22% recurring (4,200-member drain-care + water-heater base); three master plumbers on staff. | 2025 Q4 | 7.5x | PE platform add-on | 80% cash / 15% rollover / 0% seller note / 5% earnout |
| Small owner-operated plumbing (Illustrative). $450K EBITDA; owner-on-truck; no maintenance program; 60% service-call / 40% new-construction. | 2025 Q2 | 3.5x | Individual buyer / SBA-funded | 65% cash / 0% rollover / 20% seller note / 15% earnout |
Profiles aggregated from public PE press releases and internal Ad Astra advisory data. Cited where attribution is public.
Methodology
How valuation methods apply to plumbing business
Comparable transactions — anchor with multi-trade bundle context
Plumbing's comp set has two distinct layers: (a) single-trade plumbing add-ons — sub-$1M EBITDA at 2.43x–4.45x, $1M–$3M at 4.5x–6.5x, $3M+ at 6x–7x with service contracts [1]; and (b) multi-trade bundled comps — plumbing-inside-platform deals at 9x–14x where the relevant comp set is the Apex, Sila, Wrench, and Authority Brands add-on book [2][6]. Building the wrong comp set is the single largest source of mispricing in plumbing transactions.
A $2M EBITDA plumber going to a PE multi-trade platform should comp against bundled deals, not stand-alone plumber sales. The Apollo/Apex ~$10B (~20x) anchor [3] is a platform-tier ceiling, not a typical outcome — but it validates the 9x–14x best-in-class band for well-positioned multi-trade assets. Confirm which comp set applies to your business before anchoring on a headline number.
Discounted cash flow — model the service-agreement annuity separately
DCF is most useful in plumbing as a two-stream model: (a) the recurring service-agreement book — underwritten at a lower cost of capital given contracted renewal mechanics and known churn — and (b) the project and one-off service revenue, which gets a higher discount rate reflecting cyclical exposure and customer-acquisition risk. Run a 5-year forecast with explicit plan attach rates, member churn, and water-heater or drain-service conversion rates off the member base [8].
Terminal value should be anchored to a market exit multiple, not a perpetual-growth assumption. Plumbing has real reinvestment requirements — fleet refresh, technician training, marketing — that get understated when DCF models extrapolate margins. A $1.5M EBITDA plumber with 28% recurring revenue and a documented 5-year member-growth plan will show meaningfully higher DCF value than the same EBITDA without the annuity.
Asset-based — floor check with inventory depth
Plumbing carries more inventory than HVAC (water heaters, fixtures, fittings, PEX) and meaningful service-truck fleet, so asset value lands closer to operating value than in pure-service categories [9]. For healthy operating plumbers, asset value should still sit well below operating value — if the gap narrows to within 30%, it is a red flag for buried owner adjustments or unsustainable EBITDA quality.
For distressed-context valuations — an owner-health event, partnership dispute, or forced liquidation — asset-based becomes the primary method and should be run on an orderly-liquidation basis (typically 65–75 cents on the dollar for fleet and 40–50 cents for inventory versus going-concern values). Pre-sale, a documented physical inventory and a current fleet-appraisal report reduce diligence friction and eliminate guesswork on the working-capital peg.
Sell-side adjustments
The adjustments that protect — and grow — your reported EBITDA
Each item below is something we expect to debate with a buyer's QoE provider. Document them yourself, with backup, before going to market.
Owner compensation above market GM wage
+$100K – $300KOwner W-2 typically runs $250K–$450K; a replacement GM in plumbing markets at $140K–$200K. Add back the delta and document it with Glassdoor, BLS wage data, or a recruiter benchmark — QoE teams push back on undocumented comp adjustments.
Owner truck, fuel, and insurance
+$15K – $50KThe service truck the owner drives, personal fuel, vehicle insurance, and maintenance are often booked entirely as business expense. Strip the personal portion; retain the legitimate fleet cost that would exist under a replacement employee.
Family on payroll above market rate
+$25K – $120KSpouse on payroll as bookkeeper at $80K when market is $50K; adult children with W-2s and minimal roles. Document each with a job description and comparable market comp; adjust the delta or strip entirely. Buyers expect this and will find it in diligence.
Deferred service-truck refresh at close
-$50K – $200KThe opposite of an add-back. If service trucks are 10+ years old, the QoE team deducts the estimated refresh cost from purchase price or working capital. Establish a documented 5–7 year truck replacement schedule before launching the sale process to neutralize this adjustment.
Master-plumber license held only by owner
-0.25x – -0.5x multipleIf the seller is the only licensed master plumber, a buyer must hire or promote a replacement before or immediately after closing — structured as either a longer earnout or a discrete escrow holdback. Three master plumbers on staff removes this adjustment entirely and typically recovers the full 0.25x–0.5x discount at the multiple level.
Owner-occupied yard or warehouse at below-market rent
+$30K – $100KIf the owner owns the building and charges below-market rent, EBITDA is understated by the rent shortfall. Normalize to market rent — the buyer either acquires the real estate separately, signs a market-rate lease, or adjusts EBITDA upward. Below-market rent today reduces apparent EBITDA and suppresses the multiple applied to it.
Travel, meals, club memberships, and dues
+$10K – $60KCountry club, fishing trips, family vacations, and personal cell phones booked as business development. Strip with contemporaneous documentation — adjustments hold up in diligence only when there is backup to support them. Undocumented add-backs get reversed in QoE.
FAQ
Common questions about plumbing business valuation
Plumbing Business vs comparable industries
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- [1] EBITDA Multiples for HVAC, Plumbing, and Electrical Contractor
- [2] EBITDA Multiples by Industry (2026)
- [3] Apex Service Partners and Alpine Investors Announce Strategic Minority Investment from Apollo Funds
- [4] 2026 Plumbing PE Roll-Up Tracker
- [5] Top Private Equity-Backed HVAC & Mechanical Acquirers
- [6] M&A Residential HVAC Services Industry
- [7] The 2026 Update: What the Home Services Roll-Up Looks Like Now
- [8] IBBA & M&A Source Market Pulse Q3 2025
- [9] GF Data Q3 2025 — Middle-Market M&A Report
- [10] Authority Brands — Benjamin Franklin Plumbing
Multiple ranges represent typical lower middle market transactions; individual deals may fall outside the band based on buyer thesis, deal structure, and seller-specific factors. This page is informational and not a formal valuation opinion.