Class B Office Cleaning Prices in Seattle (2025)

Seattle Class B Still Carries the Country's Highest Metro Wage Floor

Class B office cleaning in Seattle prices at $0.15 to $0.27 per square foot per month. Washington's wage and benefit stack does not soften for older buildings, the same $22.35/hr BLS OEWS May 2025 metro median janitor wage, the same mandatory paid sick leave, and the same paid family and medical leave payroll contribution apply whether the tower is a downtown trophy asset or a 1980s Class B box in Belltown. The rate difference between Seattle's Class A and Class B bands comes almost entirely from reduced scope on the Class B side, not from any wage discount.

Downtown Seattle's Vacancy Crisis Hit Class B Hardest

CBRE's count put downtown Seattle CBD vacancy at a record 34.7% for the fourth quarter of 2025; Cushman & Wakefield's slightly different methodology landed closer to 35.6%. Class A vacancy specifically ran near 32.2% in early 2025. Class B has fared no better and arguably worse in relative terms, since Class B towers lack the trophy-tier amenities (on-site fitness centers, conference facilities, upgraded HVAC) that have kept a narrow slice of Seattle's best buildings at just 10.2% vacancy even as the broader downtown market struggled. A Class B owner in Belltown or Pioneer Square today is competing directly against Class A sublease space priced to move, a dynamic that has pushed Class B asking rents down and cleaning budgets with them.

Worked Bid: 45,000 Sq Ft Class B Building in Pioneer Square

A 45,000 sq ft Class B floor plate needs roughly 12.9 crew-hours nightly at ISSA's 3,500 sq ft/hr standard. At the metro OEWS median wage of $22.35/hr, raw nightly wage runs about $288. Layer on Washington's burden stack, statewide paid sick leave since 2018, the paid family and medical leave premium, state-fund workers' comp, and the total lands close to $31/hr fully loaded (a range of roughly $30.85 to $32.20 depending on how the employer splits the PFML premium), essentially the same figure a Class A building in the same city pays for labor. The entire pricing gap between this Class B account and a comparable Class A tower comes from the absence of day porter coverage and periodic floor care, which the Pioneer Square building's ownership has trimmed given the submarket's elevated vacancy.

Coverage Bands for Older Stock

• Nightly only, 5 nights/week: $0.11–$0.16/sq ft/month
• Nightly + day porter: $0.15–$0.20/sq ft/month
• Nightly + day porter + quarterly floor care: $0.18–$0.23/sq ft/month
• Full-service Class B, competing directly with Class A sublease space: $0.21–$0.29/sq ft/month

That last tier is unusual for a Class B building anywhere else in this guide, but Seattle's specific dynamic, Class B owners funding full-service scope specifically to compete against discounted Class A sublease space rather than against other Class B buildings, has pushed a handful of Belltown and South Lake Union Class B towers into pricing typically reserved for Class A.

What the Mid-Rate Buys

Pay $0.21/sq ft/month and here is what actually shows up each night: five-night service, restroom care, vacuumed common areas, trash pulled. Nothing about day porter coverage is baked into that figure; it gets quoted on top, and it is also the first thing Pioneer Square and Belltown owners strip out when they are renewing at a lower rate, with quarterly floor care the next item to go. Carpet extraction and exterior glass beyond ground floor remain separate project work in every tier, priced by square footage and access difficulty rather than folded into the monthly recurring rate.

Seattle's wet-weather season, roughly October through April, adds a real seasonal labor cost that a bid built off a dry-climate template will underprice: mat service frequency typically doubles, and lobby floor maintenance in older Class B buildings without updated entry vestibules needs closer attention to slip-hazard mitigation than the same building would require in July.

Compliance Notes

Washington's statewide paid sick leave law requires one hour of accrual per 40 hours worked regardless of building class, and the state's paid family and medical leave premium rate resets annually. The Seattle Secure Scheduling Ordinance remains scoped to large retail and food-service employers rather than janitorial contractors directly, but Class B landlords competing hard for tenants increasingly reference scheduling-fairness language in RFPs as a soft differentiator between bidding contractors, even without a legal mandate requiring it. Contractors setting up a Seattle Class B route should check the cleaning business license requirements page; for Washington sales tax treatment of janitorial services, see the WA sales tax guide.

Class B buildings here face the sharpest version of the local squeeze. Vacancy across the region reached 28.2 percent in CBRE's Q2 2026 Puget Sound figures, so commodity space is discounting hard, while the city's Minimum Wage Ordinance raised the floor to $21.30 per hour on January 1, 2026. Seattle also requires accrued paid sick and safe time under SMC 14.16. A Class B owner who cuts frequency to hold a budget is reducing service, not cost per hour, because the hourly base is fixed by ordinance.