A residential water loss has one decision-maker. A commercial loss has a manager, an owner, tenants, an adjuster, sometimes a lender, and a building that cannot simply close for a week. This is the sequence we run, and what you should expect from any contractor you call at 11 PM.
What is commercial water damage restoration?
It is the same physics as a house — stop the source, extract, dry to a documented standard, rebuild — executed under constraints a house does not have: occupied suites, shared mechanical systems, life-safety and fire-alarm interfaces, after-hours access rules, and a claim where business interruption may be worth more than the building damage.
Practically, it means larger equipment, containment that protects the parts of the building still operating, and a paper trail several parties can read.
Hour 0 to 1: stop and stabilise
- Isolate the source — riser, fixture, roof drain, sprinkler line, mechanical unit. Know where your shut-offs are before you need them.
- Kill power to affected areas where water is near panels, outlets or equipment.
- Stop the spread downward: water finds floor penetrations, elevator shafts and stairwells within minutes.
- Photograph the standing water before anyone starts pushing it around.
Hour 1 to 4: crews, access and containment
This is where commercial jobs are won or lost. A crew that arrives at midnight and waits ninety minutes for someone with a key has burned the most valuable hours of the response.
- Keys, fobs and codes — who holds them, and who can be woken up.
- Alarm and monitoring contacts — so a night entry does not become a police response.
- Loading dock, freight elevator and after-hours building rules — including any union or COI requirements.
- Power and water availability — drying equipment needs circuits, and lots of them.
- A named decision-maker reachable at 2 AM who can approve scope.
Then containment: seal the affected area, put it under negative pressure with HEPA filtration, protect corridors and shared routes, and keep unaffected suites open and clean.
Hour 4 to 12: extraction and the drying plan
- Truck-mounted or portable extraction sized to the volume, not a stack of shop vacs.
- Moisture mapping across the whole affected footprint, including the suites either side and the level below.
- An equipment map: air movers, dehumidifiers, air scrubbers, where each one sits and on which circuit.
- Category and class determination — clean supply water, grey, or contaminated — because it decides what can stay.
- Specialty decisions early: hardwood mat systems, desiccant dehumidification for large open volumes, contents pack-out where stock or records are at risk.
Hour 12 to 24: tenants, documentation and the claim
By the end of the first day you should be holding three things: a written scope, a daily monitoring log, and something you can forward to tenants without rewriting it.
Tenant notice
What happened, what areas are affected, what access changes today, and when the next update comes. Under-promise on dates.
Daily status
One short note per day with the readings trend and the next milestone. It stops the phone calls.
Claim file
Photos, moisture readings, drying logs, equipment list, scope of work and disposal records — assembled as one package.
Business interruption support
Dates, areas, square footage out of service and the restoration timeline, which is what the BI adjuster needs from you.
Tenants do not judge you on the flood. They judge you on whether you told them what was happening before they had to ask.
How do you manage after-hours access for crews?
Set it up before the loss. A short vendor agreement that names the after-hours contact, lists the access method, pre-approves emergency mitigation up to a dollar threshold, and holds current certificates of insurance on file. Every hour of negotiation at 2 AM is an hour of water moving through the building.
The mistakes that extend downtime
- Waiting for the adjuster before mitigation — policies generally expect loss mitigation, and the delay compounds.
- Drying without containment, so the clean half of the building gets humid and dusty.
- Skipping the category call and drying contaminated water in place.
- Splitting mitigation and reconstruction between two companies and re-discovering the scope at the handoff.
- No documentation of the pre-loss condition of finishes, which turns the rebuild scope into an argument.
What happens after dry
Reconstruction: drywall, ceiling grid and tile, flooring, millwork, paint, and mechanical or electrical repairs — phased so the building keeps operating, and where a space has to come back to a leasable shell, taken to a white box. Because the crew that dried it rebuilds it, nothing is rediscovered at the handoff. See commercial restoration for how we work with managers across Genesee County and Metro Detroit.
Frequently asked questions
How fast should a commercial restoration contractor respond?
On site within two to four hours for an active loss, with crews able to work overnight. Response time is the single biggest driver of total downtime.
Can you work overnight so we stay open?
Yes, and for occupied buildings it is usually the plan. Access, alarm and dock arrangements get settled on the first call so the crew is productive from the moment the building clears.
Who is responsible for notifying tenants?
The manager or owner, but the contractor should hand you the content: affected areas, access changes and the timeline, in a form you can forward.
What documentation does a commercial claim need?
Photo documentation, moisture readings and daily drying logs, an equipment list, a line-item scope, disposal records, and dates for every phase — plus square footage out of service for business interruption.
Should we set up a vendor agreement in advance?
Yes. Pre-agreed rates, response expectations, insurance certificates and a named after-hours contact remove the slowest part of an emergency.
Set up the access and vendor details now, so a 2 AM loss is a phone call, not a negotiation.