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About Emerald City Cleaning · Family-Owned Since 2005

Twenty years of showing up for Seattle.

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.

Guacolda Zinsmeyer, Principal CEO, Emerald City Cleaning
Owner & Principal CEO

Meet Guacolda Zinsmeyer.

"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.

Guacolda Zinsmeyer
Principal CEO · Emerald Cleaning, LLC
WMBE Certified · WA M5F0024884
How We Operate

Four principles. Twenty years.

The shortlist of things we won't compromise on. They've gotten us here, and they're how we'll keep going.

01

W-2 Employees Only

Every worker is on our payroll. Background-checked, drug-tested, uniformed, bonded, insured. We never subcontract — full stop.

02

Document Everything

Photo report after every visit. Site supervisors do random checks. If we say we did it, you can see we did it.

03

Real Communication

One named contact in our office. Two-hour response window during business hours. We answer the phone — that's the bar.

04

Show Up On Time

If we said Tuesday at 7 AM, we're there Tuesday at 6:55 AM. The fundamentals matter more than anything that comes after.

Twenty Years

The long way to overnight success.

A company isn't built in a year. Here's the milestones along the way.

2005

Emerald City Cleaning founded

Guacolda Zinsmeyer starts the company in Seattle with a single residential cleaning crew.

2008

First commercial accounts

Expand into commercial office cleaning. First multi-floor downtown contract signed.

2012

WMBE certification

Certified by the State of Washington as a Women & Minority Business Enterprise. Cert # M5F0024884.

2015

Commercial kitchen vertical

Specialty crew launched for restaurant, brewery, and commercial kitchen deep cleans. TANCS® vapor system added.

2017

ISSA CIMS & Green Building Certified

Among the 1% of cleaning firms certified by ISSA for the Cleaning Industry Management Standard + LEED-EBOM.

2020

Electrostatic + HEPA fleet

Full fleet of HEPA vacuums and electrostatic disinfection sprayers deployed across all crews during the pandemic.

2023

Post-construction division

Dedicated post-construction crew launched for general contractors and developers. Scissor-lift certifications added.

2025

20 years & counting

50+ W-2 employees, 25M+ sq ft cleaned annually, BBB-accredited, IICRC industry certified, ARCSI Seal of Excellence.

Credentials & Certifications

The credentials behind the work.

Every certification on this page is current and verifiable. No expired logos.

ISSA CIMS

ISSA CIMS

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

BBB Accredited

BBB Accredited

Better Business Bureau accredited business since 2008.

WA WMBE

WA WMBE

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

E-Verify

E-Verify

All employees E-Verify screened and professionally background checked.

EPA Safer Choice

EPA Safer Choice

Default chemical line is EPA Safer Choice listed — eco-friendly, low-odor.

The Team

Fifty employees. Zero subcontractors.

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.

50+
W-2 Employees on the Payroll
0
Subcontractors. Ever.
25M+
Sq Ft Cleaned Annually
20+
Years in Seattle

Ready to talk?

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.