Serving Oakland and Macomb Counties Office hours: Monday–Friday, 8:30 a.m.–4:30 p.m.

The short answer

Which Michigan credentials does Sandison list?

Mechanical License 7115733, Master Plumber 8112263, and Plumbing Contractor 800-3618. Sandison also lists NRPP radon mitigation certification and Noritz Platinum Dealer status.

What Sandison evaluates

Contact and service information

  • Office: (248) 453-1227
  • Emergency: (248) 467-1761
  • Oakland and Macomb Counties
  • Plumbing, HVAC, electrical, radon, and commercial

Michigan trade responsibility

License numbers are published so property owners can verify the responsible scope

Sandison records Michigan Mechanical License 7115733, Michigan Master Plumber 8112263, and Michigan Plumbing Contractor 800-3618. Mechanical licensing supports installation, alteration, servicing, and permit responsibility within the classifications held; plumbing credentials support licensed plumbing work and contractor responsibility. A license is not a promise that every requested task is within one permit or one person's scope, so Sandison identifies the trade, local authority, project boundaries, and inspections that apply to the actual work.

Specialty qualifications

NRPP certification and manufacturer relationships supplement—not replace—diagnosis

Sandison's recorded qualifications include NRPP-certified radon mitigation and Noritz Platinum Dealer status. NRPP is a professional radon credential; the website does not claim that Michigan generally enforces NRPP certification. Manufacturer familiarity can improve model-specific planning, maintenance, and service questions, but the installed condition, current documentation, measurements, local requirements, and applicable trade responsibility still control the recommendation. Customers can use the linked official directories to verify the relevant credential source.

Primary references

Verify the local and credential information.

Common questions

What property owners ask

Which Michigan credentials does Sandison list?

Mechanical License 7115733, Master Plumber 8112263, and Plumbing Contractor 800-3618. Sandison also lists NRPP radon mitigation certification and Noritz Platinum Dealer status.

How can I verify credentials for my project?

Use the linked Michigan LARA and NRPP resources, or ask the office for the credentials relevant to the proposed scope. Permit and inspection requirements depend on the project.

Evidence and review

Why this page can be trusted

Contact Sandison to confirm current service details, availability, and the requirements for your property.

Updated . Contact Sandison to confirm the scope and requirements for your property.

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A welcome from Sandison

Put $50 back in your pocket.

New residential customers can save $50 on a qualifying completed repair or installation.

Offer codeWELCOME50

Licensed multi-trade service · Office-confirmed scheduling

New residential customers only. One offer per household. Cannot be combined with another offer. Not valid for dispatch or diagnostic fees, maintenance plans, permits, or after-hours emergency service. Qualifying work and final eligibility are confirmed before service.