Per-Pane, Per-Hour, or Flat Rate: How Window Cleaning Companies Actually Price the Job

How Do Window Cleaning Companies Actually Price a Job?

Window cleaning companies price jobs one of three ways: per pane or per window, by the hour, or as a flat rate for the whole visit set before anyone starts. None of the three is a scam on its own, but each puts the risk of a job running longer or harder than expected on a different party. Most professional residential companies, Glide included, quote flat rate, because a per-unit or per-hour number can't account for how differently two homes with the same window count can actually clean up.

The Three Pricing Models, Explained

1. 1

   Per-pane or per-window

   A set rate multiplied by the number of panes or windows on the house. National cost guides put a basic per-window rate around $4 to $8 (Angi, retrieved 2026-07-23), before factoring in stories, screens, or glass condition. It's an easy number to quote over the phone, but it treats every pane as identical work, which they aren't.

2. 2

   Per-hour (time and materials)

   The crew bills for however long the job takes at an hourly labor rate, sometimes with a materials or trip charge added. This shifts the risk to the homeowner: a harder job, old screens, heavy mineral buildup, awkward access, simply costs more, and there's no firm number until the crew is already on site and working.

3. 3

   Flat rate (project pricing)

   One number for the entire visit, agreed before the crew starts, based on an actual look at the specific house rather than a formula. It takes more work upfront to build the quote, but it fixes the price regardless of how the job actually goes once the crew is there.

Hybrid Pricing You'll Also Run Into

Few companies run a pure version of any single model. The most common real-world setup is a flat base price covering the core visit, exterior glass, frames, tracks, and sills, with interior glass, screens, and hard-water treatment priced as add-ons on top of that base. That's still flat-rate pricing underneath, not a fourth category, but it matters when comparing two quotes side by side: the all-in number from one company may already include what another treats as an extra line item. Reading the scope on both quotes before comparing totals avoids mistaking a narrower quote for a cheaper one.

Why a Per-Window Number Doesn't Scale Cleanly to a Whole House

A per-window rate looks simple until the windows themselves aren't uniform. A grid window with nine small panes behind one frame can get billed as nine units under a strict per-pane rule, inflating the total well past what the actual time on that window justifies. A single large picture window, by contrast, can take longer to do well than three small ones, for less money under the same per-unit math. Window count, stories, glass condition, and scope are the real inputs behind any quote, and a flat per-window rate only captures the first of those four cleanly.

The Trade-off With Per-Hour Billing

Per-hour pricing has the opposite problem: it's honest about variable difficulty, but it puts the homeowner on the hook for however long the job runs, with no ceiling agreed in advance. It also creates a conflict of interest worth naming plainly: a crew paid by the hour has no financial incentive to work efficiently, and one paid by the hour but managed loosely can take longer than the job requires. For residential work this is the least common of the three models for exactly that reason; it shows up more often on ambiguous or open-ended jobs where nobody can size the work in advance. A company that insists on hourly billing for a standard home should at minimum give a not-to-exceed estimate before starting, so an hourly job still has a known ceiling instead of an open-ended one.

What Flat-Rate Pricing Actually Looks Like

Angi puts the national average window cleaning cost at $221 per visit, with most homeowners paying $150 to $302 (Angi, retrieved 2026-07-23). On the ground, a flat-rate quote for a specific house is built from a real walk-around or a detailed photo intake, not a national average or a per-unit formula: window count, stories, glass condition, and what's included in the visit all get priced for that house before a number ever gets quoted. That's why our residential window cleaning visits and pricing guide describe a range tied to the actual house rather than a rate card, and why most one-time full interior and exterior cleans land in that $175 to $500 band once the specifics are in.

Which Method Should You Choose?

The method matters less than whether the company will commit to a number before work starts and explain how they got there. A per-window quote is fine for a simple, uniform home if the company accounts for grid windows and condition honestly. An hourly quote is fine with a firm not-to-exceed ceiling attached. A flat rate built from an actual look at your house removes the guesswork for both sides, which is why it's the standard most residential companies, Glide included, quote under. Whatever the method, ask for it in writing before the crew arrives, and get a quote based on your actual home instead of a category average.