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Mold Testing in Shoreline, WA

Independent Mold Inspection & Testing in Shoreline

If you’re concerned about mold in a Shoreline home, condo, or rental property, 5 Microns Inc. provides independent, lab-verified mold testing throughout North King County.

We perform testing only — not remediation — ensuring objective findings without contractor-driven sales pressure.

We serve neighborhoods including:

Richmond Beach
Innis Arden
Echo Lake
North City
Meridian Park
Hillwood
Ridgecrest
Parkwood

      EXCELLENT  
   Based on 137 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Suzanne Smith 
 
 
 
 Trustindex verifies that the original source of the review is Google. Everything was smooth and without a hitch. The team was reliable and did wonderful work.
  
 
      Posted on Google  
   
   Adele Brawn 
 
 
 
 Trustindex verifies that the original source of the review is Google. I'm pleased with the service I received. The process was carefully planned to go quickly and easily.
  
 
      Posted on Google  
   
   Mia Ewing 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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.
  
 
      Posted on Google  
   
   B Leif 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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
  
 
      Posted on Google  
   
   Cassie Krebs 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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.
  
 
      Posted on Google  
   
   JB 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very straightforward, although does not always deliver their results on time even if paying the extra 25$
  
 
      Posted on Google  
   
   margaret W 
 
 
 
 Trustindex verifies that the original source of the review is Google. Did an amazing job detecting our problem areas.  Was very detailed,  professional  and was genuinely helpful. Highly recommend,  came over next day.
  
 
      Posted on Google  
   
   Art Jury 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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.
  
 
      Posted on Google  
   
   Samy Hampton 
 
 
 
 Trustindex verifies that the original source of the review is Google. ⭐️⭐️⭐️⭐️⭐️
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!
  
 
      Posted on Google  
   
   Aleesha Kaundal 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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

Shoreline Properties

Located just north of Seattle, Shoreline experiences extended seasonal rainfall and elevated humidity typical of the Puget Sound region.

Common contributing factors include:

Mid-Century Housing Stock

Many Shoreline homes were built between the 1950s and 1980s and may have:

Aging roofing systems
Limited attic ventilation
Outdated crawlspace designs
Historic plumbing leaks

Basement & Daylight Basement Moisture

Daylight basements are common in hillside areas. These can experience:

Foundation seepage
Poor drainage
Condensation buildup
Inadequate airflow

Crawlspace Humidity

Elevated crawlspace moisture is one of the most frequent mold contributors in North King County homes.

Remodeling & Construction Moisture

Shoreline has seen significant remodeling and infill development. Improper dry-out during construction can contribute to hidden mold conditions.

What Shoreline Mold Testing Includes

We tailor inspection scope depending on your concern — real estate transaction, musty odors, visible staining, tenant complaints, or post-remediation verification.

Visual Mold Inspection

Identification of moisture intrusion patterns
Review of visible staining
Evaluation of ventilation systems

Moisture Diagnostics

Pin and non-invasive moisture readings
Targeted diagnostics in high-risk areas

Air Sampling (Spore Trap Analysis)

Indoor samples compared to outdoor control
Identifies indoor amplification
Useful when mold is suspected but not visible

Surface Sampling

Tape lift or swab testing
Documentation for disputes or real estate transactions

Clearance Testing *optional

Post-remediation verification
Confirms indoor mold levels have normalized

All samples are analyzed by accredited environmental laboratories.

Mold Testing for Shoreline Real Estate Transactions

Mold concerns frequently arise during:

Buyer inspection contingency
Pre-listing preparation
Investment property acquisitions
Rental property purchases

Shoreline’s mix of mid-century homes and newer developments makes moisture history variable. Independent testing provides clarity before closing.

Landlord & Tenant Mold Testing in Shoreline

Neutral documentation is critical when mold disputes arise.

Our reports include:

Sampling methodology
Moisture readings
Laboratory analysis and interpretation
Practical next-step guidance

Because we do not perform remediation, our findings remain objective and conflict-free.

When Should You Schedule Mold Testing?

You may need mold testing if you notice:

Persistent musty odors
Visible discoloration
Recent plumbing or roof leaks
Basement dampness
Crawlspace humidity
Health symptoms that improve outside the property

Hidden mold can exist even without visible growth.

Why Choose 5 Microns Inc.

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

We provide:

Laboratory-backed mold analysis
Clear written reports
Objective, conflict-free evaluations
Practical recommendations
Service throughout Shoreline and North King County

Shoreline Areas We Serve

Richmond Beach • Innis Arden • Echo Lake • North City • Meridian Park • Hillwood • Ridgecrest • Parkwood

FAQ – Shoreline Mold Testing

How much does mold testing cost in Shoreline?

Cost depends on property size and sampling scope. We recommend the most efficient approach based on your concern.

Is mold common in Shoreline basements?

Yes. Basement seepage and crawlspace humidity are frequent contributors in North King County homes.

Can you test for hidden mold?

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

Do you perform remediation?

No. We provide independent mold testing only.

Schedule Mold Testing in Shoreline, WA

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

Serving Shoreline and surrounding North King County communities

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