How Illinois Plumbing Companies Sell
Owner playbook for Illinois plumbing companies: licenses, how buyers recast the books, and a confidential planning range. No upfront listing fee.
Confidential • No upfront fees • Illinois statewide
Buyers price an Illinois plumbing company on service-agreement and drain work that repeats — not on one hospital rough-in. The Illinois plumber license is personal. A buyer without a licensed plumber who can pull permits on day one cannot legally run the book, in the collar counties or in Chicago.
Recurring service is the company. The hospital rough-in is a job.
An Illinois plumbing company is a licensed person who can pull permits, a drain and water-heater book that calls back, and trucks that already know the subdivisions. It is not a single commercial rough-in that made last year look like a breakthrough.
Buyers sort membership and service-agreement revenue from bid construction. A three-truck Arlington Heights shop with a drain route and a thin water-heater book is a real Main Street file. A shop that only looks busy because the owner is the only licensed plumber on every permit is a job, not a company. The 3x–5x SDE planning range assumes the bays — and the license — stay full without that person.
This hub teaches the statewide plumbing file. City pages (Arlington Heights, Naperville, Chicago) add local clocks. The seller-intent page is sell my plumbing business. The math page is how to value a plumbing company.
Recast recurrence, then price the license gap
Start with the tax return. Add owner compensation. Remove new-construction spikes, warranty callbacks, and any unlicensed helper coded as a plumber. If the seller still holds the only Illinois plumber license that lets the company pull permits, subtract a market-rate plumber-in-charge before you apply a multiple.
In-house camera and jetting capability matters because it keeps drain revenue from being subbed out. Buyers will ask whether those tools are on the company’s books or on the seller’s personal truck. Commercial account tenure beats a year of bid-only work that will not transfer.
BizBuySell’s Q2 2026 2.7× all-industry cash-flow average is context. SBA 7(a) still funds many owner-operator plumbing deals when the license path is real. The statutory maximum is $5 million.
IDPH licenses the plumber. Chicago adds its own desk.
The Illinois Plumbing License Law (225 ILCS 320) is statewide. The Illinois Department of Public Health licenses plumbers, plumber apprentices, plumbing contractors, and irrigation contractors. IDPH states it licenses about 8,900 plumbers and 2,000 apprentice plumbers. A first-time plumber exam applicant must have worked as a licensed apprentice for a minimum of four years and complete the Department’s education requirements. The individual license is personal. It does not ride with the vans, the camera, or the goodwill line on a teaser.
IDPH also registers plumbing contractors — any licensed plumber or apprentice who performs work for another person — and requires minimum general liability, bodily injury, property damage, and workers’ compensation insurance. That contractor registration is a company-level item a buyer must re-paper. Section 5 of the Act requires the shop to display a plumber license on the wall and to put a plumbing license number on advertisements. A teaser that hides the number is not a compliance plan.
Chicago runs its own plumbing-license regime on top of the state law. IDPH even publishes a reciprocity application for City of Chicago licensees. Downstate and collar towns still expect an IDPH-licensed plumber on the truck. A buyer who can work Arlington Heights but cannot put a Chicago-licensed plumber on the payroll loses the city work that may have justified the multiple. Confirm the current IDPH and City of Chicago desks — this page is not a permit guide.
Cross-connection and backflow rules show up on commercial files. JULIE locate discipline is a liability question. Municipal business licenses and the published phone number transfer only if you paper them. None of this is “included in goodwill.”
- IDPH plumber credentials are personal under 225 ILCS 320. Exam applicants need at least four years as a licensed apprentice.
- Plumbing contractors must register with IDPH and carry the Department’s minimum insurance lines.
- Ads must carry a plumbing license number (225 ILCS 320/5). The wall must display a license.
- Chicago plumbing work is a separate license culture; IDPH publishes a Chicago reciprocity form.
- A buyer without a licensed plumber on day one cannot legally operate the book.
Another plumber, a trades platform, or an SBA first-timer
Another licensed plumber or a nearby HVAC shop buying a plumbing division is the common Illinois buyer. They understand permits. They discount a seller who is the only person the inspectors know.
A first-time buyer with a plumber license and an SBA lender is a real path when memberships and drain work exist. They are not a path when the license walks out and the construction spike was the year.
Platforms buy plumbing when service agreements, a licensed bench, and a dispatcher exist without the seller. They will not waive a missing plumber-in-charge. See how to sell a plumbing business for process.
The permit test on Monday after close
The deal dies when the seller is the only license, when 1099 helpers were doing plumber work, when the camera is personal property, or when commercial backflow work has no certified person staying. Workers-comp class codes that do not match the actual job mix are the next letter-of-intent killer.
Open permit history and failed inspections travel with the reputation even when they do not travel with the entity. Put the municipal list in the first packet. Buyers already compare collar-county files. A surprise Chicago job sitting in the sales mix is a diligence finding, not a bonus.
Ninety days that prove someone else can pull the permit
Name every IDPH or Chicago plumber license on the payroll and whether that person stays. Export memberships, drain recurrence, and service agreements versus bid spikes. List cameras, jets, and trucks that are company property versus riding on the seller’s personal title.
Pull three years of tax returns, matching P&Ls, and bank statements. Print contractor registration, insurance certificates, and a sample of ads that already show a plumbing license number — or admit they do not. Open permit history in the towns you actually work.
Then recast. If you are the only license, subtract a plumber-in-charge before you fall in love with 4x. See how to value a plumbing company and how to sell a plumbing business.
CBS-1 plus the plumber who can pull the first permit
File Form CBS-1 at least ten business days before a qualifying asset transfer. Chicago and Cook County add 45-day local bulk-sale notices when they apply. The plumber license replacement belongs on that calendar, not after funding.
Educational only. Confirm notices, allocation, and IDPH or Chicago filings with counsel. This hub is the teaching page. City combination pages add the local file.
A worked plumbing company recast — not a quote
This table is a planning illustration for an Illinois plumbing company. It is not a closed sale and not an appraisal of any shop.
SDE line items
- Reported net profit (tax return, not the marketing P&L)
- + Interest expense
- + Income taxes (not payroll, sales, or property tax)
- + Depreciation and amortization
- + Owner W-2, bonuses, and payroll taxes on the owner
- + Discretionary owner benefits that a buyer will not keep (auto, personal travel, family on payroll with no role)
- + Accepted one-time or non-recurring expenses
- − Market-rate replacement labor for owner work that will not transfer
- = Seller’s Discretionary Earnings (SDE)
| Net profit | $166,000 |
|---|---|
| Owner W-2 | $67,000 |
| Benefits | $19,000 |
| One-time | $14,000 |
| Personal | $4,000 |
| Replacement labor (subtract) | −$65,000 |
| Recast SDE | $205,000 |
| Planning EV at 4.00x | $820,000 |
What moves the multiple
- A staying licensed plumber who is not the seller
- Membership or service-agreement recurrence
- Camera and jetting capability that keeps drain work in-house
- Commercial account tenure versus bid-only new construction
- Clean permit and workers-comp history
Have these ready before anyone hears the name
- Who holds the IDPH or Chicago plumber license and whether they stay
- Service-agreement and water-heater-membership count versus bid work
- Municipal permit history and any open violation or failed inspection
- Fleet, camera, hydro-jet, and locate-equipment condition
- Commercial vs residential mix and backflow-certification coverage
- Workers-comp class codes versus actual job mix
Recast Seller’s Discretionary Earnings, then apply a planning multiple for plumbing companies. Replacement labor is subtracted. This is a planning tool, not an appraisal.
Before debt, working-capital peg, holdback, and tax. Educational only.
Enter your annual Seller's Discretionary Earnings (SDE) — your net profit plus owner's salary and any personal expenses run through the business — to estimate a range.
This is an estimate for planning purposes only. Actual value depends on lease terms, asset quality, customer concentration, and current market conditions. Request a professional valuation for a precise number.
How to prepare an Illinois plumbing company for sale
- Name who can pull a permit after you leave. List every IDPH or Chicago plumber license on the payroll and whether that person stays. The license does not ride with the assets.
- Split membership work from bid work. Export water-heater memberships, drain-cleaning recurrence, and service agreements versus new-construction spikes.
- Recast seller’s discretionary earnings. Add back owner pay. Remove warranty callbacks and unlicensed helper cost coded as a plumber. Subtract a plumber-in-charge if the seller is the only license that lets the company pull permits.
- Open cameras, jets, and the fleet. In-house camera and hydro-jet capability keeps drain work from walking out. Buyers will ask what is owned versus riding on the seller’s truck as personal property.
- Check backflow and JULIE discipline. Commercial files turn on cross-connection certification and locate practice. Those are liability questions, not van slogans.
- Calendar CBS-1 and municipal registrations. State bulk-sale notice is due at least ten business days before a qualifying asset transfer. Chicago plumbing work is a different license culture on top.
Plumbing Companies pages on this site
Plumbing Companies by Illinois market
Each city page is the plumbing company file for that place — local closing clocks and a unique recast illustration — not a copy of this hub.
What a researcher can open
- IDPH Plumbing — Plumber, apprentice, and plumbing-contractor registration.
- 225 ILCS 320 — Illinois Plumbing License Law.
- IDOR Form CBS-1 — State bulk-sale notice: at least ten business days.
Questions owners ask about plumbing companies in Illinois
No. IDPH plumber credentials are personal. The company needs a licensed plumber who can pull permits after close. Chicago adds its own license desk for city work.
Our planning range is 3x–5x adjusted SDE when service work and a staying licensed plumber exist. The BizBuySell all-industry 2.7× cash-flow average is not your quote.
Not as base earnings. Buyers isolate bid spikes and ask what drain, membership, and service work did in a normal year.
Often, when the buyer’s license path and the recast survive underwriting. The 7(a) maximum is $5 million.
Locate practice is a liability question. Buyers ask whether the shop’s commercial and underground work followed Illinois one-call discipline — not whether the van says it did.
Plan on 4–8 months when books, the lease, and licenses are ready. License transfers and landlord consent are what push files past that range.
Illinois Plumbing License Law is statewide: IDPH issues journeyman and plumber licenses, and the company needs a licensed plumber to pull permits. Chicago runs its own plumbing-license regime on top. The license is personal. It does not ride with the assets. A buyer without a licensed plumber on day one cannot legally operate the book.
Private equity, owner-operators, strategic acquirers. City pages on this site explain how that mix changes by county.
Illinois plumbing companies typically sell for 3x–5x SDE. Key value drivers are recurring service agreements, the size of the licensed plumber team, and the mix of commercial versus residential work.
Start 12–24 months before you plan to sell. Formalize any verbal service agreements into written contracts, ensure your financial records are clean and separated from personal expenses, and document your processes so the business can run without you.
Yes. Plumbing companies are SBA-eligible businesses, and most buyers use SBA 7(a) financing. This is good news for sellers because SBA loans reduce the cash a buyer needs upfront, expanding your buyer pool significantly.
Most Illinois plumbing company sales close within 4–8 months. Well-documented businesses with strong recurring revenue tend to attract multiple offers and close faster.
Yes. The business and real estate can be sold separately. Many sellers lease the property back to the new owner, which also creates a secondary income stream for you post-sale.
Talk through your Illinois plumbing company
Confidential consult. The 3x–5x SDE range on this page is planning math, not a promise. Success fee only if we take you to market and close.
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