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

The short answer

Start with the complete system and the evidence

Facility work has to account for uptime, occupants, access, documentation, connected equipment, and the cost of repeat failure. Sandison evaluates the system and explains priorities in operational terms.

What Sandison evaluates

A practical path from symptoms to the right scope

  • Commercial HVAC and rooftop equipment
  • Plumbing, drains, and backflow
  • Electrical diagnostics and equipment connections
  • Preventive maintenance and condition reporting

Facility-specific operating context

Real-Estate and Insurance Investigations require a service plan built around occupancy and consequences

Real-estate and insurance assignments require a defined question, site preservation, photographs, measurements, service and weather history, separation of cause from damage, stated limitations, responsible-party boundaries, and conclusions that do not exceed the available evidence. Sandison confirms the responsible contact, affected assets, operational impact, safe access, available shutdown, roof or security requirements, tenant or occupant communication, sanitation controls, and authorization boundary before work begins. The immediate objective may be stabilization; permanent repair, deferred risk, and capital work are documented as separate decisions.

Records that support operations

Commercial evidence should remain useful after the technician leaves

A complete record for real-estate and insurance investigations identifies asset or location, original complaint, observed condition, measurements or photographs, work performed, parts and settings where relevant, operating verification, open deficiencies, priority, and the party responsible for follow-up. Sandison can coordinate plumbing, HVAC, hydronic, electrical, drainage, water-heating, and diagnostic work while stating clearly when engineering, fire protection, refrigeration, restoration, public utilities, or another specialty is outside the approved scope.

Primary references

Verify the local and credential information.

Common questions

What property owners ask

How does Sandison evaluate real-estate and insurance investigations?

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 real-estate and insurance investigations 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

Owner-reviewed commercial capability record with industry-specific operating context, documentation requirements, and scope boundaries.

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.

Save$50on service
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.