Sequencing Utility Shutoff Before Demolition

Why Utility Disconnection Sequencing Is Critical

Utilities are the first things that should come off a demolition project, but they're also the first things contractors get wrong. Work starts without confirming utilities are truly disconnected. Crews accidentally cut live electrical lines. Gas lines get breached. Water pipes get damaged, flooding the site.

These aren't minor incidents. Live electrical lines kill people. Gas breaches require emergency response and evacuations. Water damage spreads into adjacent properties. The cost isn't just the emergency response—it's project shutdown, police involvement, legal liability, and damaged reputation.

The utilities need to be disconnected in a specific order, and you need documentation proving they're disconnected before any structural demolition starts.

Understanding Your Utility Dependencies

Before you schedule utility contractors, identify every utility serving the building:

Electrical: Primary service from utility pole or underground feed, secondary services, backup generators, solar systems (increasingly common)

Natural Gas: Meter, service line, any gas appliances or systems

Water: Main service line, any fire suppression systems, rainwater systems

Sewer/Sanitary: Main connection, any on-site treatment or lift stations

Stormwater: Catch basins, drainage systems, any on-site detention

Telecommunications: Landline, internet, cable TV, antenna systems

District Systems: If in an urban area, district heating, cooling, or steam systems

Most projects have electrical, gas, water, and sewer. Some have more. You need to contact each utility company and schedule disconnection.

The Standard Utility Disconnection Sequence

The correct sequence ensures that you're not disconnecting something that another utility depends on:

Step 1: Notify All Utilities (1-2 weeks before demolition start)

Contact each utility company with the building address and request disconnection. Provide them with your project timeline. Most utilities need 1-2 weeks notice.

Step 2: Mark All Utilities (before any ground disturbance)

Contact "Call Before You Dig" (811 in the US) to have all underground utilities marked. This prevents accidental damage during site preparation.

Step 3: Electrical Disconnection (first)

Electrical is disconnected first because it powers some of the disconnection process itself (pumps, compressors, lighting).

Utility company cuts service at the meter or disconnect switch
Verify with a meter or testing equipment that service is truly off
Remove or cap any remaining exposed wiring
Do NOT proceed with demolition until electrical is confirmed dead

Step 4: Gas Disconnection (second)

Once electrical is off, gas is next:

Gas utility company closes the meter valve and disconnects the service line
Pressure-test the remaining gas line to verify it's inert
Cap the disconnected line
Confirm work with a utility representative

Step 5: Water and Sanitary Sewer (third)

Once electrical and gas are disconnected, you can address water and sewer:

Water utility closes the main valve and disconnects the service line
Sanitary sewer is either cut and capped or left for final removal during foundation work
Stormwater lines can be left open if they're sloped away from the building or redirected

Step 6: Telecommunications (fourth)

Landline, internet, and cable TV are typically low voltage and low hazard, but should still be formally disconnected:

Utility companies or service providers disconnect their lines
Any on-site telecommunications equipment is removed

Step 7: Confirm Complete Disconnection

Before work begins, you should have documentation from each utility confirming disconnection. Create a checklist:

Electrical service disconnected and meter removed—utility certification
Gas service disconnected and capped—utility certification
Water service disconnected and capped—utility certification
Sanitary sewer prepared—utility certification
Stormwater redirected or prepared—utility certification
All utilities marked and work locations confirmed—call-before-dig markings

Do not start demolition until every item is checked.

The Timing Problem: Getting Utilities and Demolition Coordinated

Utilities often disconnect at their convenience, not your project timeline. The electrical utility might schedule disconnection for a date three weeks out when you need it done in two weeks. The gas company wants to disconnect on a day when you're expecting to start demolition.

Mitigating Scheduling Conflicts

Contact utilities immediately—don't wait until you're ready to start demolition. Explain your timeline and ask for flexibility. Most utilities can accommodate earlier disconnections if you request them.

Schedule disconnections as follows:

Ideal: All disconnections complete 2-3 days before demolition starts, giving you time to verify and plan
Acceptable: All disconnections complete on the day before demolition starts, if you've confirmed timing
Never: Schedule disconnections for the same day demolition starts—guarantees miscommunication

If a utility can't meet your timeline, your project timeline changes. Build utility disconnection lead time into your schedule.

Coordinating With Contractors

If you're using specialized utility contractors (rather than the utilities themselves), you need to coordinate:

Utility contractors depend on utility company disconnections happening first
Utility contractors might need to cap or redirect lines before you demolish nearby
Some contractors cut lines; others just disconnect and leave capped connections

Be explicit about what each utility contractor is responsible for and what remains for your demolition crew. Ambiguity costs days of back-and-forth.

When Utilities Create Demolition Constraints

Sometimes disconnecting a utility requires demolition work first. Example: An electrical service comes through a basement wall that you want to remove. The utility company won't disconnect until you've exposed the line safely inside the building.

These dependencies need to be identified early. Your site pre-assessment should flag them. Then you plan: "Demolition crew removes interior basement wall on day X, utility company disconnects electrical on day X+1, main demolition begins day X+2."

The Cost of Utility Delays

A typical project delayed by utility disconnection problems:

Delay: Utilities can't disconnect for 5 days after your planned start (common)
Crew cost: 4 workers sitting idle = $640 per day
Equipment rental continuing: $400 per day
Five-day delay total: $5,200

That's not counting schedule impact, customer irritation, or opportunity cost of not starting the next project on time.

Documentation That Prevents Problems

Before any demolition work starts, you should have a utility disconnection file containing:

Certified disconnection notices from each utility
Site map showing utility locations and disconnection points
Call-before-dig markings confirmation
Contact information for each utility in case questions arise

This file stays on site. Reference it to confirm utilities are truly disconnected before your crew starts breaking concrete.

Building Utility Disconnection Into Your Planning

Successful contractors start their project planning by scheduling utility disconnections first, then building the demolition sequence around confirmed utility disconnection dates. Unsuccessful contractors try to disconnect utilities after the project starts, which always creates delays.

Your utility disconnection sequence isn't a prerequisite to planning—it's the first phase of your plan.

Eliminate utility delays and hazards. Join our waitlist to access planning tools that integrate utility disconnection sequencing into your complete demolition timeline.

Coordinating Utility Disconnections Before Demolition Starts