Gold Seal Plumbing
Licensed Professional: Shawn Schiffelbein
At a Glance
About Gold Seal Plumbing
With a 4.8-star Google rating from 3553 reviews, Gold Seal Plumbing is among the top-rated radon professionals serving Spokane Valley, Washington. Holds NRPP Radon Measurement Professional certification. With over 3553 Google reviews, this is one of the most-reviewed radon professionals in Washington.
Credentials & Verification
NRPP Radon Measurement Professional License
Licensed for professional radon testing and measurement
Issuing Body
National Radon Proficiency Program (NRPP)
License Type
Professional License
Status
Current through August 2027Verified against NRPP, RADON_SITE public databases · Last checked April 2026 · Report incorrect information
Contact & Location
Phone
(509) 818-7786
dougs@goldsealplumbing.com
Website
www.goldsealplumbing.com
Location
5524 E Boone Ave, Spokane Valley, WA 99212, USA
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