Mold Testing in Bellevue, WA

Independent Mold Inspection & Testing in Bellevue

If you’re concerned about mold in a Bellevue home, condo, or commercial property, 5 Microns Inc. provides independent, lab-verified mold testing throughout the city.

We do not perform remediation.

You receive objective testing results without sales pressure.

We serve Bellevue neighborhoods including:

  • Downtown Bellevue
  • West Bellevue
  • Somerset
  • Newport Hills
  • Bridle Trails
  • Lakemont
  • Eastgate
  • Factoria
  • Clyde Hill
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Suzanne Smith
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Everything was smooth and without a hitch. The team was reliable and did wonderful work.
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Adele Brawn
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I'm pleased with the service I received. The process was carefully planned to go quickly and easily.
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Mia Ewing
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The young lady I spoke to on the phone was extremely kind and informative. Any question I had she could answer. She represents the company extremely well! We need more people like her.
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B Leif
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Very disappointed with how 5 micron left my walls and building agree inspection Usually a company would take carpet up in the corner of the room they did it right in the middle 47 cuts and slashes Gave them a chance to make repairs - they refused Be careful when using them and always have someone who knows what they are doing onsite Refused to fix any of it Costing me thousands- they said the building was going to be completely renovated - reason for sloppy job but I never told them that
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Cassie Krebs
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5 microns was so easy to work with. Absolutely loved Carole! She was so through and educating, a true pleasure to work. I was happy to give them a call and request her to come back for mold clearance.
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JB profile picture
JB
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Very straightforward, although does not always deliver their results on time even if paying the extra 25$
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margaret W
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Did an amazing job detecting our problem areas. Was very detailed, professional and was genuinely helpful. Highly recommend, came over next day.
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Art Jury
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On time smart great explanations. These folks know their stuff. Kind and don't make you feel stupid. General inspector and real estate agent very impressed as well. Can't go wrong with these guys. Bit expensive but you get what you pay for here.
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Samy Hampton
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⭐️⭐️⭐️⭐️⭐️ I had some concerns for mold in my office after gone through some water damage a year back, and I contacted 5 microns, and they came in the following day and ran all the necessary tests. A couple days later they emailed my results with the breakdown of everything I needed to know and how to take care of my concerns! Pascal was also very professional! Highly recommend!
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Aleesha Kaundal
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Pascal was very professional and attentive to our needs. He was also empathetic to our situation. He took quite a bit of time explaining things to us. The report is very detailed and professional too. Thanks 5 Microns

Why Mold Concerns Are Common in Bellevue

Located just east of Seattle, Bellevue shares the same prolonged wet season — but with additional factors unique to the Eastside.

Luxury & High-End Homes with Complex Rooflines

Large custom homes often have:

  • Multiple valleys
  • Skylights
  • Deck transitions
  • Hidden flashing failures

These details increase intrusion risk.

 High-Rise & Condo Moisture Issues

Downtown Bellevue towers frequently experience:

  • Window intrusion
  • Balcony drainage failures
  • HVAC condensation
  • Plumbing stack leaks

Air testing is especially important in shared-wall environments.

Crawlspace & Slab Moisture

Even newer Bellevue homes can experience:

  • Elevated crawlspace humidity
  • Inadequate vapor barriers
  • Poor exterior grading

Construction Moisture in New Builds

Fast-paced development sometimes results in framing exposed to rain before full dry-out.

What Bellevue Mold Testing Includes

We tailor the scope based on your concern (real estate, odor, visible staining, health symptoms, prior leak, etc.).

Visual Inspection

  • Identification of moisture patterns
  • Evaluation of previous water damage
  • Assessment of ventilation

 Moisture Diagnostics

  • Pin and non-invasive moisture readings
  • Targeted areas based on findings

 Air Sampling (Spore Trap)

  • Indoor samples compared to outdoor control
  • Species identification and spore counts
  • Helpful when mold is suspected but not visible

 Surface Sampling

  • Tape lift or swab sampling
  • Documentation for disputes or transactions

 Post-Remediation Clearance Testing *optional but recommended.

 

Verification that mold conditions have returned to normal.

Mold Testing for Bellevue Real Estate Transactions

Bellevue’s competitive housing market makes mold testing a critical risk-management step.

We frequently assist with:

  • Buyer inspection contingency
  • Pre-listing testing
  • Luxury property due diligence
  • Condo resale documentation
  • Investment property evaluation

Independent mold testing provides leverage and clarity before closing.

Landlord & Tenant Mold Testing in Bellevue

If there’s a moisture or mold complaint, documentation matters.

Our reports include:

  • Sampling methodology
  • Moisture readings
  • Lab results
  • Clear interpretation
  • Recommended next steps (without remediation sales bias)

Neutral, defensible documentation protects both property owners and occupants.

When Should You Schedule Mold Testing?

You may need testing if you notice:

  • Musty odors
  • Visible discoloration
  • Recent roof or plumbing leak
  • Chronic condensation on windows
  • Warped flooring or drywall bubbling
  • Health symptoms that improve outside the home

Why Choose 5 Microns Inc.

Unlike remediation-driven companies, we operate strictly as an independent environmental testing firm.

We provide:

  • Lab-backed mold analysis
  • Clear written reports
  • Conflict-free evaluations
  • Practical next-step guidance
  • Service throughout Bellevue and surrounding Eastside communities

Bellevue Neighborhoods We Serve

Downtown • West Bellevue • Medina • Clyde Hill • Somerset • Newport Hills • Lakemont • Eastgate • Factoria • Bridle Trails

FAQ – Bellevue Mold Testing

How much does mold testing cost in Bellevue?

Costs vary depending on size and sampling scope. We’ll recommend the most efficient approach for your situation.

Is mold common in Bellevue condos?

Yes. Window intrusion, condensation, and shared-wall moisture issues are common contributors.

Can you test for hidden mold?

Yes. Air sampling and moisture diagnostics help identify hidden conditions.

Do you perform remediation?

No. We provide independent testing only.

Schedule Mold Testing in Bellevue, WA

If you’re concerned about mold in your Bellevue property, schedule an independent inspection with 5 Microns Inc.

Serving Bellevue and surrounding Eastside communities

Licenses & Certifications