How Much Does Window Cleaning Cost in Seattle? (2026 Guide)

Seattle window cleaning typically runs $180 to $450 for a single-family home in 2026. The spread reflects three things: number of panes, single vs both sides, and whether screens and tracks are included. Here's how to read a quote so you're comparing apples to apples.

Typical 2026 Seattle pricing

• Small home (under 15 windows), exterior only: $180-$240
• Mid-size home (15-25 windows), interior + exterior: $260-$380
• Larger home (25-40 windows) or two-story: $380-$550
• Add-on: screen cleaning — $3-$6 per screen
• Add-on: track and sill detailing — $4-$8 per window
• Add-on: hard-water stain removal — $50-$150 per affected area

Per-pane vs flat-rate quotes

Per-pane pricing ($5-$9 each) is honest for small jobs but adds up fast on large homes. Flat-rate quotes are easier to compare and usually cheaper for 20+ window homes. Either way, confirm whether 'pane' means each glass section or each window unit — the difference can double the bill.

Why pure-water cleaning matters in Seattle

Our tap water leaves visible mineral spots within hours of drying, especially on south-facing glass that warms quickly. Pure de-ionized water dries spot-free, which is why every reputable Seattle service uses it for exterior work. If a quote is unusually cheap, ask whether they use DI water or just soap and squeegee — the latter looks fine for a day, then ghosts.

Best time to schedule

April through June (post-pollen) and September through October (pre-storm) are the busiest windows. Book 2-3 weeks ahead during those months. Winter cleaning works fine with pure water and is often available next-week.