Licenses and Credentials | Sandison Home Services

The short answer

Start with the complete system and the evidence

Sandison is organized around clear information, licensed responsibility, evidence-led decisions, durable records, and direct access to the office or emergency line when the situation requires it.

What Sandison evaluates

A practical path from symptoms to the right scope

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

How does Sandison evaluate licenses and credentials?

Sandison starts with the symptoms, the property, the connected systems, and observable evidence before recommending repair, replacement, maintenance, or further testing.

Can I request service for licenses and credentials online?

Yes. Submit a non-emergency service request for review, or call the office during business hours. For an urgent active failure, call the emergency number directly.

Does Sandison serve both homes and commercial properties?

Yes. Sandison serves homeowners, property managers, businesses, and institutional facilities throughout Oakland and Macomb Counties.

Evidence and review

Why this page can be trusted

Published company and conversion record with verified business facts, decision boundaries, direct contact paths, and qualified review.

Author and qualified trade reviewer: James Sandison, B.S. Mechanical Engineering, Oakland University. Michigan Mechanical License 7115733 · Michigan Master Plumber 8112263 · Michigan Plumbing Contractor 800-3618. Last reviewed 2026-08-28.