Commercial mold is a business problem first
When mold turns up in a shop, office, restaurant or apartment building, three things happen at once. A space has to stay open or close. Someone has to find the moisture. Someone has to decide who pays. A residential mindset of scrub and hope does not scale to that.
This guide is for owners, managers and tenants of small commercial and multifamily properties in Bothell. It explains how to think about the job and what to ask a restoration company.
What commercial properties face
Larger affected areas
Commercial rooms are bigger, and the state guidance for professionals starts at about ten square feet.
Shared systems
HVAC, roofs, plumbing risers and ceilings are shared across spaces, so moisture and spores spread.
Business interruption
A closed room means lost revenue. Plan how to keep the rest of the space open safely.
Lease and liability questions
Landlords, tenants and insurers may each have a part. Read the lease.
Mold in a commercial space?
Call the 24/7 line. A person answers and helps you scope the first step.
Safety steps before the crew arrives
- Keep people out of the affected area and do not disturb visible growth.
- Turn off fans and HVAC that blow across the area, so spores do not spread.
- Stop any active water source and keep electrical equipment away from wet areas.
- Do not demolish walls or ceilings before the scope is written.
- Send health questions from staff or tenants to their own physicians.
A sequence for managers
Stop the water
No remediation works while moisture continues. Find and fix the source.
Document the conditions
Photograph the areas, record dates and note who reported it.
Notify the right parties
Landlord, tenant, insurer and property manager each need to know.
Define the scope in writing
Ask the contractor to show the affected area, the plan and the clearance step.
Contain and remove
The work area is sealed and filtered so the rest of the building stays clean.
Dry and verify
Moisture readings confirm the area is dry before rebuild.
Standards and licensing
The industry standard for mold remediation is the ANSI/IICRC S520. The Washington Department of Health says there are no specific certification requirements for mold or water damage restoration in Washington State, and advises hiring a contractor who is licensed, bonded and insured. The IICRC offers voluntary certification.
The state also requires construction contractors to register with the Department of Labor and Industries. Ask for the registration number and verify it. For commercial work, ask for proof of insurance as well.
Testing and clearance
Some commercial jobs include air or surface testing before and after remediation. Testing is a decision for the property owner, insurer or an independent consultant. The remediation crew should explain their own verification, such as moisture readings and a visual check.
Be wary of a company that both tests and remediates and has an incentive to find more work. A written scope and a third-party clearance, where your lease or insurer requires one, give you an independent check.
Insurance and leases
The Washington commissioner says many homeowner policies offer limited mold coverage, but only when the mold results from a covered loss. Commercial policies differ and can exclude mold entirely or cap it. Ask your commercial insurer and read the lease before work starts.
In multifamily buildings, ask who owns the wall, the pipe and the roof. The answer usually decides who pays. Document everything, and keep copies of every written notice.
Reducing risk in a commercial space
- Inspect roofs, flashing and rooftop units before the rainy season.
- Service HVAC condensate lines and drain pans.
- Set up a leak-reporting process for tenants and staff.
- Control humidity in storage rooms, kitchens and bathrooms.
- Check ceiling tiles for stains after storms.
- Keep a list of shutoff valve locations posted.
For water events, start with emergency water removal so mold does not get a head start.
Questions to ask a restoration company
- Will you provide a written scope that names each affected area?
- How will you contain the work area and protect occupied spaces?
- What equipment will you use for air filtration and drying?
- How will you verify that the area is dry and clean?
- Who disposes of the removed materials, and how?
- What does the schedule look like, and how will you keep the business open?
Keeping tenants and customers informed
People notice work signs, plastic barriers and equipment noise. A short written notice helps. Say what the work is, where it takes place, how long it should last and who to contact.
Do not speculate about health. If someone raises a health concern, direct them to their own physician. Keep the notice factual, and keep a copy for your records.
Records worth keeping
Keep photographs, dates, moisture readings, notices to tenants, invoices and correspondence with insurers in one place. If a dispute arises over cause or cost, a clear file helps every party. It also helps with the next incident.
For property managers
Water events that lead to mold start with emergency water removal, and the mold itself falls under mold remediation.
Commercial and multifamily calls come from Bothell, Lynnwood and Kirkland.
Common questions
The affected areas are larger, building systems are shared and business continuity matters. Containment, filtration and a written scope are more important.
The state health department says there are no specific certification requirements for mold or water damage restoration in Washington. Construction contractors still register with the Department of Labor and Industries.
That depends on the lease, the cause and the insurance involved. Report in writing and ask your insurer.
Yes, we dispatch across Bothell, including the Canyon Park area, and to Kenmore, Woodinville, Kirkland and Lynnwood.