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About Emerald City Cleaning · Family-Owned · Serving Seattle Since 2003

Two decades of showing up for Seattle.

Family-owned, Washington WMBE-certified, 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's path into cleaning started in 2003, prepping brand-new custom homes for builder John Baccham across Bainbridge Island and Seattle — the detailed, white-glove work of getting a home spotless before its owners ever walked in. From there she built a trusted residential cleaning business, and in 2013 she founded Emerald City Cleaning to bring that same standard — W-2 employees, real training, showing up on time — to businesses and premier homes across the city. Twenty-plus years in, 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. Two decades.

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.

Two Decades

The long way to overnight success.

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

2003

Where it began

Guacolda starts out prepping brand-new custom homes for builder John Baccham across Bainbridge Island and Seattle — readying each home, spotless, before the owners walked in.

2003–13

A residential cleaning business

She builds a trusted residential cleaning firm across Seattle's neighborhoods, earning a reputation for showing up and doing it right.

2013

Emerald City Cleaning founded

Guacolda founds Emerald City Cleaning, bringing her standard to commercial and premier residential work — W-2 crews only, no subcontractors. The company earns Washington WMBE certification (Cert # M5F0024884).

2015

HCT Certified

Guacolda earns her House Cleaning Technician (HCT) certification — formal training in the standards behind a truly clean home.

2015–24

ARCSI & ISSA Residential Certified

Through this period, Emerald City Cleaning operates as a certified residential cleaning firm under ARCSI and ISSA.

2017

Commercial expansion

Launches post-construction cleaning for homes, hotels, and high-rises — with lift-certified crews for extreme high dusting — plus nightly commercial kitchen cleaning for tech companies and corporate campuses.

2020

Electrostatic disinfection

Electrostatic disinfection sprayers deployed across all crews during the pandemic.

2025

ISSA CIMS & Green Building Certified

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

Today

20+ years & counting

BBB-accredited, IICRC industry certified, ARCSI Seal of Excellence — and W-2 crews you can count on, the same trusted team every visit.

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.

WA WMBE

WA WMBE

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

EPA Safer Choice

EPA Safer Choice

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

The Team

W-2 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. Every employee passes an extensive background check; we service high-security facilities and our hiring bar reflects that.

100%
W-2 Employees on the Payroll
0
Subcontractors. Ever.
WMBE
Washington-Certified WBE
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.