Washington recognizes several credentials for cleaning and detailing work, and which one you need depends on what you're cleaning and who you work for

Washington State does not require a single universal "cleaning credential." Instead, the state recognizes different certifications based on the type of cleaning work you do. If you clean residential homes, you may not need any credential at all. If you work with hazardous chemicals, clean commercial buildings, or work for a government contractor, you'll likely need specific training or certification. The credential that counts depends on your employer's requirements, the chemicals you handle, and whether you work in a regulated industry.

The key distinction is between what Washington State legally requires and what individual employers require. State law does not mandate a cleaning license, but federal workplace safety rules (OSHA) and specific work environments (healthcare, schools, government buildings) do create credential requirements. Understanding this difference helps you know what you actually need versus what is optional.

Key Takeaways

  • Residential house cleaners in Washington typically do not need a state credential, though some employers may require their own training.
  • Cleaners who handle hazardous chemicals or work in healthcare, schools, or government buildings may need OSHA training or a specific safety certification.
  • Commercial cleaning companies often require employees to hold a Bloodborne Pathogens certification or OSHA 10-hour card, depending on the work environment.
  • If you work for a government contractor or federal project, you may need to meet prevailing wage requirements and hold specific safety credentials.
  • Washington's Department of Labor & Industries (L&I) oversees workplace safety rules but does not issue a general "cleaning license" for the state.

Residential cleaning does not require a state credential

If you clean homes for private clients, Washington State does not require you to hold any credential issued by the state. You can legally work as a residential house cleaner without a license, certification, or formal training. However, individual homeowners or cleaning companies that hire you may have their own requirements — some ask for background checks, proof of insurance, or completion of their internal training program.

Many residential cleaners choose to get certified through private organizations like the International Sanitary Supply Association (ISSA) or the Cleaning Industry Management Association (CIMA), but these are optional and not required by law. These certifications can help you stand out to clients and may lead to higher rates, but they are not credentials that Washington State recognizes or enforces. Starting a residential cleaning business requires a business license from your city or county and a tax ID, but not a cleaning-specific credential.

OSHA training and safety certifications for hazardous chemicals

If you clean with hazardous chemicals — including disinfectants, degreasers, or other industrial cleaners — you may need OSHA training depending on your workplace. OSHA (Occupational Safety and Health Administration) is a federal agency, and Washington State has its own OSHA program called Washington OSHA, which enforces the same rules. Your employer is required to provide you with training on how to handle, store, and dispose of chemicals safely, and how to read Safety Data Sheets (SDS).

This training is not a credential you carry from job to job — it is employer-provided instruction that must happen before you work with those chemicals. However, some employers require workers to hold an OSHA 10-hour card, which is a certificate showing you have completed 10 hours of general workplace safety training. This card is issued by OSHA-authorized trainers and is recognized across industries. It is not specific to cleaning but shows you understand basic safety rules. The card typically costs $50 to $150 and is valid for five years.

Bloodborne Pathogens certification for healthcare and biohazard cleaning

If you clean in hospitals, medical offices, schools, or anywhere that may have blood or bodily fluids, you will need Bloodborne Pathogens certification. This is a federal requirement under OSHA rules, not a Washington State credential, but Washington employers must follow it. The certification shows you know how to recognize, handle, and clean up biohazards safely.

You can get this certification through online courses, community colleges, or training providers — it typically takes a few hours and costs between $20 and $100. The certificate is valid for one to three years depending on the provider. Your employer may require you to renew it on a set schedule. This is one of the most commonly required credentials for commercial cleaning work in Washington, and many facilities will not hire you without it.

Prevailing wage requirements for government and contractor work

If you work for a contractor cleaning government buildings, schools, or public facilities in Washington, you may need to meet prevailing wage requirements. This is not a credential in the traditional sense, but it is a legal requirement that affects your pay and sometimes your training. Prevailing wage rules mean your employer must pay you a set hourly rate (which varies by county and job type) and may require you to join a union or complete apprenticeship training.

Washington's Department of Labor & Industries sets prevailing wage rates for public works projects. If you are hired for this type of work, your employer will tell you what rate applies and what training or union membership is required. You do not explore for prevailing wage status yourself — your employer handles the compliance. This typically applies to cleaning work on school renovations, government building maintenance, or other publicly funded projects.

Certifications from private organizations and trade groups

Several private organizations offer cleaning certifications that are recognized in the industry but not required by Washington State law. The ISSA Cleaning Industry Management Association offers the Certified Cleaning Technician (CCT) credential, which covers cleaning science, safety, and business practices. The Building Service Contractors Association (BSCA) also offers training and certification for commercial cleaners.

These credentials can improve your job prospects and earning potential, especially in commercial cleaning. They show clients and employers that you have formal training and understand industry standards. However, they are optional — Washington does not recognize them as required credentials, and you do not need them to work as a cleaner in the state. Many cleaners pursue these certifications after gaining experience to advance into supervisory or management roles.

What your employer may require beyond state credentials

Even if Washington State does not require a specific credential, your employer may have their own requirements. Many cleaning companies require new hires to pass a background check, drug test, or health screening. Some require completion of their own training program before you start work. Others may ask for proof of liability insurance if you work independently.

If you are hired by a cleaning company, ask during the interview what credentials or training they require. If you are starting your own cleaning business, check whether your clients (especially commercial or institutional clients) have credential requirements before you bid on the work. This will help you understand what you need to get before you start and may affect how you price your services.

Frequently Asked Questions

Do I need a license to start a cleaning business in Washington?

You do not need a cleaning license from Washington State. You will need a business license from your city or county, a tax ID number from the state, and liability insurance if you work with commercial clients. Some cities require a business license for home-based businesses, so check your local rules.

Is OSHA 10-hour certification required for all cleaners?

No. OSHA 10-hour certification is not required by law for cleaners in Washington. However, many employers require it, especially for commercial cleaning jobs. If your employer requires it, they may pay for the training or expect you to complete it on your own time.

What if I want to clean in schools or hospitals?

Schools and hospitals typically require Bloodborne Pathogens certification and may require OSHA training or an OSHA 10-hour card. Some also require background checks and may have their own internal training. Contact the facility's human resources or facilities department to ask what credentials they need before you explore.

Can I use certifications from other states in Washington?

Most cleaning certifications are portable because they are issued by national organizations, not state agencies. An OSHA 10-hour card, Bloodborne Pathogens certification, or ISSA credential earned in another state is recognized in Washington. However, check with your employer to confirm they accept out-of-state credentials.

Where do I get trained if my employer requires a credential?

Your employer should tell you where to get training and may cover the cost. If not, community colleges, online training providers, and organizations like ISSA offer courses. The Washington Department of Labor & Industries website lists approved OSHA trainers. For Bloodborne Pathogens training, search for "BLS provider" or "OSHA-authorized trainer" in your area.