Family-owned, Washington WMBE-certified, 50+ W-2 employees, no subcontractors. Run by Seattle natives who answer the phone, show up on time, and treat every property like it's their own.
"I started this company because cleaning isn't a transaction. It's a relationship. We learn your space, your schedule, your standards — and we earn the right to come back next week."
Guacolda founded Emerald City Cleaning in Seattle in 2005 with a simple bet: that hiring W-2 employees, training them properly, and showing up on time would beat any competitor's price-list. Twenty years later, the bet's paid off.
She still runs the business day-to-day. Every estimate, every escalation, every late-night question from a worker — they all reach her. The company is Washington WMBE certified (Women & Minority Business Enterprise) — a real credential, audited annually by the state, that opens us up to public-sector and tier-one corporate work other firms can't bid on.
The shortlist of things we won't compromise on. They've gotten us here, and they're how we'll keep going.
Every worker is on our payroll. Background-checked, drug-tested, uniformed, bonded, insured. We never subcontract — full stop.
Photo report after every visit. Site supervisors do random checks. If we say we did it, you can see we did it.
One named contact in our office. Two-hour response window during business hours. We answer the phone — that's the bar.
If we said Tuesday at 7 AM, we're there Tuesday at 6:55 AM. The fundamentals matter more than anything that comes after.
A company isn't built in a year. Here's the milestones along the way.
Guacolda Zinsmeyer starts the company in Seattle with a single residential cleaning crew.
Expand into commercial office cleaning. First multi-floor downtown contract signed.
Certified by the State of Washington as a Women & Minority Business Enterprise. Cert # M5F0024884.
Specialty crew launched for restaurant, brewery, and commercial kitchen deep cleans. TANCS® vapor system added.
Among the 1% of cleaning firms certified by ISSA for the Cleaning Industry Management Standard + LEED-EBOM.
Full fleet of HEPA vacuums and electrostatic disinfection sprayers deployed across all crews during the pandemic.
Dedicated post-construction crew launched for general contractors and developers. Scissor-lift certifications added.
50+ W-2 employees, 25M+ sq ft cleaned annually, BBB-accredited, IICRC industry certified, ARCSI Seal of Excellence.
Every certification on this page is current and verifiable. No expired logos.

Among the 1% of firms CIMS & Green Building Certified for LEED-EBOM.

Better Business Bureau accredited business since 2008.

State-certified Women & Minority Business Enterprise. Cert #M5F0024884.

All employees E-Verify screened and professionally background checked.

Default chemical line is EPA Safer Choice listed — eco-friendly, low-odor.
Every uniform you see on a job site is on our payroll. We hire properly, train internally, and pay above the local market — because the only way to deliver our standard at scale is to keep good people around for the long haul.
Free walkthrough, written proposal within one business day, no pressure to commit. We'll scope the work and put a number on it after we've seen your space.