# Buying a Window Cleaning Business

What window cleaning businesses trade for, why recurring commercial routes carry the value, and how labor, height, and insurance shape the deal.

Source: https://searchspheresource.com/guides/buying-a-window-cleaning-business

## Why Searchers Target Window Cleaning

Window cleaning is a low-barrier route business with a durable core. Storefront and commercial accounts billed on monthly retainers renew with low churn, often 2 to 5% a year for a good operator. A downtown block of storefronts is the densest possible route, many small jobs within walking distance. The field is deeply fragmented and a natural roll-up, so exits are visible. It is distinct from the janitorial trade: this is exterior, height-exposed work, from ground-level storefronts to water-fed-pole mid-rise and rope-access high-rise, and that skill and safety layer is what keeps casual competition out. The economics turn on how much of the book is recurring commercial route work versus one-off residential and project jobs.

## What Window Cleaning Businesses Trade For

Window cleaning trades inside the marketplace's cleaning and janitorial class, where sold-business quartiles ran 1.57x to 2.66x SDE from 2021 through 2025 with the median near 2.07x. The class names window cleaners among its specialized trades, so the figures are the publisher's own classification of this work and not a substitution of ours. A searcher buys at the SDE end, so anchor there; a book of diversified monthly commercial contracts earns the top of the range while a business leaning on a few accounts or on lumpy one-off work sits at the bottom. Where a specific business lands is mostly the recurring commercial share and the customer concentration the next sections cover.

## Recurring Routes Against One-Off Work

The core split is recurring commercial route work versus one-off jobs. Monthly storefront and commercial retainers are contractually recurring, low-churn, and route-dense, so they are the revenue a buyer pays a premium for; one-off residential cleans and one-time high-rise projects are real but lumpy and win-again each time. Concentration is the paired risk: a book leaning on one property manager or a single large building can lose a big share on one non-renewal, so a well-diversified route of many small accounts is worth more than the same revenue from a few. Read the split of recurring versus one-off, the route density, and the account concentration before crediting the trailing number.

## Labor, Height, and Insurance

Three things decide the real business. Labor is the biggest cost, commonly half to sixty percent of revenue, and turnover runs high, so crew retention and whether workers are W-2 rather than 1099 both matter. A seller using contractors for what are really employees is a misclassification liability a buyer inherits. Height is the distinct risk: mid-rise and high-rise work carries fall exposure, OSHA rules, and rope-access or lift requirements, so the safety record and training are diligence items a janitorial deal would not have. Insurance is the gate: general liability, workers' compensation, and commercial auto are required, and commercial accounts demand a certificate of insurance, so a poor safety record raises the premiums.

## What to Verify in Diligence

The record to assemble before the offer holds:

## Financeability Notes

Window cleaning finances under SBA 7(a), and lenders read recurring commercial contract revenue more favorably than one-off residential work. Expect underwriting to weigh customer concentration, the labor structure, and the safety record, since a misclassification exposure or a poor workers' compensation history is a liability a lender prices. Model debt service net of a market wage for a crew lead and a manager if the seller works routes, net of the fair labor cost if contractors are being reclassified to employees, and net of the equipment capex the work needs. The margin risk to underwrite is wage pressure against contracts that cannot be repriced quickly, so read the labor share and the contract terms, not just the trailing profit.

## What this guide verified

- The marketplace's cleaning and janitorial class, 797 businesses sold from 2021 through 2025, shows a $260,000 median sale price, $433,327 median revenue, and a 2.19x average earnings multiple; window cleaning sells inside this blend, so treat the figures as the class's, not the niche's. (Valuation multiples for a cleaning company (Peak Business Valuation): https://www.bizbuysell.com/learning-center/valuation-benchmarks/cleaning-janitorial/)
- Cleaning and janitorial valuations have risen, with the average earnings multiple growing from about 2.0 in 2021 to 2.3 in 2025 and the median sale price reaching roughly $325k, and well-diversified books command a premium over concentrated subcontractor operations. (Cleaning and janitorial valuation benchmarks (BizBuySell): https://www.bizbuysell.com/learning-center/valuation-benchmarks/cleaning-janitorial/)
- Wages alone run about 43 percent of receipts across commercial janitorial, the census class window cleaning sits inside, and that share excludes payroll taxes and benefits because the economic census does not collect them for service industries. Labor is the largest line in the business by a distance, so how a company classifies its cleaners decides how much of that line is genuinely fixed. (Census Economic Census, janitorial services (2022): https://www.census.gov/programs-surveys/economic-census.html)

## Terms of the trade

- **Glass cleaner VOC cap**: Glass cleaners face a federal VOC cap nationwide, and California sets a tighter limit. California caps the volatile organic compounds in a glass cleaner sold in the state at ten percent for an aerosol and three percent for everything else, so the solvent-heavy products a crew might reach for cannot lawfully be sold there at all. The limit binds the seller, so it reaches a cleaning business through its supplier and not through an inspector, which is why an operator can be out of step without ever meeting one. Ask what the crew actually buys, and ask hardest about restoration work on hard-water staining, because that is where somebody is most tempted to reach for chemistry the state has priced out.
- **Frequency mix**: How often each account repeats, which is what turns a job list into a route. A monthly commercial account and an annual residential one are not the same asset even at the same yearly revenue: the first fills a schedule and the second has to be re-sold every year. Frequency also decides how much a route can absorb before it needs another crew. Ask for revenue split by frequency band, and read a book that is mostly annual work as the sales job it is, not as the route it is being sold as.
- **Recurring commercial route**: Commercial accounts cleaned on a monthly retainer, not one-off residential jobs. Recurring commercial routes are low-churn, predictable, and densely stopped, which is why their share is the biggest single driver of the multiple. Ask for the retainer list with start dates and cancellation history, and check who signed each one. A route built on a property manager's relationship with the owner is worth less than one built on the buildings themselves, and only the second survives the sale.
- **Certificate of insurance (COI)**: Proof of the coverage a commercial client demands before it will hire a contractor at all. Most commercial accounts will not sign without one, so the coverage is both an operating cost and the gate to the better half of the revenue. Ask what limits the current clients require, because a single large account can set the bar for the whole company, and confirm what that coverage costs at your own claims history rather than the seller's. Being unable to produce one is being unable to bid.
- **Rope descent work**: High-rise cleaning done on suspended rope, which needs certified anchors and trained crews. It pays several times ground-level rates and fences out most competitors, which is why a book carrying it holds its price. It also carries the risk. Anchorages have to be certified, the workers have to be trained and the training documented, and one lapse ends the insurance that lets a crew onto the roof. Ask to see the anchor certifications and the training records before valuing that revenue at all.
- **Hazardous weather stop**: The federal rule that stops rope work in wind and deliberately names no number. The rope descent standard says no employee uses the system when hazardous weather such as storms or gusty or excessive wind is present, and it stops there: no miles per hour appears anywhere in it, and the call belongs to a qualified person. The number the trade repeats is not from that rule at all. Twenty-five miles per hour is a DESIGN figure in the consensus standard for stabilizing hardware on long descents, which is a specification for equipment and not a stop-work trigger. So the threshold this business actually runs on is whatever its own written plan says, which makes that document the thing to read. A company with no number of its own has left the decision to whoever is on the roof.
- **Business contract renewal**: The renewal rules that reach a commercial book, since consumer law does not. Every consumer cancellation statute here is limited to services bought for personal, family or household purposes, so a commercial route gets none of them. Two states reach business contracts instead and both make the renewal unenforceable if the seller stays quiet. New York requires written notice, served personally or by certified mail, at least fifteen and no more than thirty days before the customer's own cancellation deadline. Wisconsin requires a signed or initialed disclosure at signing, fifteen to sixty days of notice on a multi-year renewal, doubles the customer's damages, and voids any clause making the customer let the seller match a rival's offer.