A commercial tenant improvement can look straightforward on paper.
Remove a few walls. Build new offices. Upgrade the lighting. Add outlets. Move equipment. Paint the space. Open the doors.
Then construction begins.
The electrical scope gets larger.
A panel doesn’t have enough capacity. Existing circuits don’t match the new layout. The tenant needs additional equipment. Fire alarm devices have to be relocated. Data cabling needs to be added. Lighting controls need to be coordinated. Something hidden above the ceiling doesn’t match the drawings.
Suddenly, the electrical portion of the project is affecting the schedule and budget.
This is why electrical planning deserves attention before a tenant improvement project gets underway—particularly in a growing market such as Bothell.
Bothell’s permitting framework specifically includes tenant improvements, commercial and multifamily projects, and remodels. The city also notes that development activity is expected to support additional commercial and residential growth. For general contractors, property owners and tenants, understanding the less obvious electrical costs can make the project considerably easier to manage.
What is a commercial tenant improvement?
A tenant improvement, often abbreviated as TI, is work performed to adapt an existing commercial space for a particular tenant.
The project could involve:
- Office renovations
- Restaurant build-outs
- Retail spaces
- Medical or healthcare offices
- Professional services
- Fitness facilities
- Hospitality spaces
- Industrial or flex spaces
- Technology-oriented workplaces
The electrical scope varies dramatically depending on the tenant.
A small office may require relatively simple modifications.
A restaurant, medical practice or specialized commercial operation may require substantial electrical work. That’s why using a generic electrical allowance at the beginning of a project can be risky.
The existing electrical capacity may not match the new tenant
This is one of the most important questions to answer early.
How much electrical capacity does the building have, and how much will the new tenant require?
A previous office tenant may have had relatively modest electrical demands.
A new tenant could require:
- Commercial kitchen equipment
- Refrigeration
- Specialized medical equipment
- Additional HVAC
- Manufacturing equipment
- High-density computer equipment
- EV chargers
- Larger lighting loads
- Additional mechanical systems
The existing panel may physically have available breaker spaces but still not have enough overall capacity. Those are not the same thing.
Understanding the difference early can prevent expensive redesign later.
Existing panels and distribution equipment
Commercial buildings often contain electrical equipment installed for the original building configuration.
During a tenant improvement, contractors may discover that the existing distribution system isn’t ideally suited to the new layout.
The solution could involve adding circuits, modifying distribution, upgrading a panel or making larger electrical improvements.
This is one reason an electrical contractor should review the existing infrastructure before the final construction plan is locked in. If a project requires a significant electrical upgrade, that work needs to be incorporated into the schedule, drawings and budget.
Lighting is more than replacing fixtures
Lighting is one of the most visible parts of a commercial remodel, but the electrical scope goes beyond selecting fixtures.
A modern lighting upgrade may involve:
- New LED fixtures
- New circuits
- Occupancy sensors
- Daylight controls
- Dimming
- Automated controls
- Emergency lighting
- Exit lighting
- Exterior lighting
- Signage
In an older commercial space, the existing wiring may not align with the new lighting design. A simple fixture replacement may therefore become a broader electrical retrofit.
Fire alarm changes
When walls move, rooms are added or ceilings are modified, fire alarm devices may also need to change.
Depending on the project, this could involve relocating or adding devices and coordinating electrical and life-safety work with the broader construction schedule.
This is particularly important for medical, commercial, retail and other occupied spaces where life-safety systems are integral to the building.
Fire alarm work shouldn’t be treated as an afterthought. It should be considered during the design stage.
Low-voltage systems
Today’s commercial tenant rarely needs only electrical power.
Businesses also depend on:
- Network cabling
- Structured cabling
- Security cameras
- Access control
- Communications systems
- Wireless infrastructure
- Technology equipment
The electrical contractor and low-voltage teams may need to coordinate pathways, locations, power requirements and equipment spaces.
A tenant may initially say, “We just need some outlets.”
By the time the technology requirements are finalized, the project may include dozens of network connections, cameras, access-control devices and specialized equipment. Planning these systems early helps avoid conflicts after walls and ceilings are closed.
Existing conditions behind the walls
This is one of the biggest sources of uncertainty in remodeling.
Existing drawings may be incomplete.
Previous tenants may have made modifications.
Electrical work may have been performed at different times.
A ceiling may conceal wiring that doesn’t appear on current plans.
A wall scheduled for demolition may contain electrical equipment that needs to be relocated.
These aren’t necessarily signs of poor construction.
They’re common challenges associated with modifying existing buildings. The more information the project team can obtain before construction begins, the easier it becomes to manage those conditions.
Code-related corrections
A tenant improvement can reveal conditions that require correction as part of the current project.
That could include outdated equipment, improper modifications, damaged components or other conditions that become relevant when the space is altered.
This is another reason property owners should avoid treating the electrical budget as simply “new outlets and lights.”
The project is modifying an existing electrical system.
The existing system therefore needs to be evaluated as part of the planning process. Bothell’s permit resources specifically address tenant improvements and provide access to commercial building documentation and existing plans where available.
The tenant’s future equipment
One of the easiest mistakes to make is designing only for what the tenant has today.
What happens two years from now?
A business may add equipment.
A restaurant may expand its kitchen.
An office may increase its employee count.
A property owner may want EV charging.
A medical practice may install specialized equipment.
A warehouse tenant may change operations.
Electrical design should consider reasonable future needs where practical.
That doesn’t mean overspending on capacity that will never be used. It means identifying likely future requirements before the walls are closed and construction is complete.
Working in an occupied Bothell building
Tenant improvements aren’t always performed in empty buildings.
Commercial properties can have neighboring tenants, shared corridors, common electrical rooms and occupied spaces.
That introduces additional considerations.
Electrical shutdowns may need to be scheduled.
Temporary power may be required.
Work may need to occur outside normal business hours.
Noise and access need to be coordinated.
A commercial electrical contractor working in an occupied building needs to think beyond the installation itself. The goal is to keep the project moving while minimizing disruption to other businesses.
Schedule impacts
Electrical work often interacts with nearly every other trade.
Walls can’t be closed until certain electrical work is complete.
Lighting installation depends on ceilings and finishes.
Equipment connections depend on mechanical installation.
Low-voltage systems depend on pathways and infrastructure.
Inspections affect sequencing.
If electrical planning starts too late, it can affect the entire project schedule.
This is particularly important in Bothell’s active commercial corridors, where tenant spaces may be part of larger developments or established commercial centers.
Canyon Park, for example, has long been an important employment and commercial area, with retail, office, flex and other business uses.
For a GC managing multiple trades, electrical coordination isn’t a minor detail. It is a project-management issue.
A better way to budget electrical work
Instead of asking:
“How much will the electrical work cost?”
A better question is:
“What electrical conditions could change the scope of this project?” Before finalizing the budget, evaluate:
1. Existing electrical capacity
Determine what service, panels and distribution equipment are currently available.
2. New electrical loads
Identify every major piece of equipment the tenant expects to install.
3. Lighting requirements
Determine fixture types, controls, emergency lighting and exterior requirements.
4. Technology infrastructure
Identify network, security, access control and other low-voltage needs.
5. Fire and life-safety requirements
Determine whether existing systems need modification.
6. Future expansion
Ask what the tenant may reasonably need in the next several years.
7. Existing conditions
Review drawings and inspect accessible electrical infrastructure before construction.
8. Shutdown requirements
Determine whether work will require interruptions to other tenants or building systems.
Why early electrical involvement can save money
It may seem counterintuitive to involve an electrical contractor early when the project hasn’t started.
But early involvement can identify problems while they’re still inexpensive to solve.
For example:
Changing an electrical layout during design is relatively easy.
Changing it after drywall is installed is not.
Identifying inadequate capacity during planning gives the team time to budget for an upgrade.
Discovering it after equipment arrives can delay the project.
Coordinating lighting controls before the ceiling is finished is easier than reopening finished spaces. The earlier the electrical scope is understood, the fewer surprises are likely to appear during construction.
What Bothell GCs and property owners should ask
Before selecting an electrical contractor for a tenant improvement, ask:
- Have you reviewed the existing electrical infrastructure?
- Have you identified likely capacity issues?
- Have you reviewed the tenant’s equipment requirements?
- Are lighting controls included?
- Are fire alarm modifications included?
- Are low-voltage requirements coordinated?
- Are shutdowns included in the schedule?
- Are potential code corrections identified?
- Are future electrical requirements being considered?
Who is coordinating electrical work with the other trades?
These questions can expose gaps before they become change orders.
The best TI electrical plan is the one that doesn’t surprise you
Commercial tenant improvements are inherently unpredictable because you’re modifying an existing building for a new purpose.
You can’t eliminate every unknown.
You can, however, reduce the number of surprises.
For Bothell general contractors, property owners and commercial tenants, that starts with treating electrical work as a core component of the project rather than a final construction task.
Whether the project involves a small office renovation, a retail build-out, a restaurant, a healthcare space, a new commercial tenant or a larger remodel, the electrical system needs to support the way the space will actually operate.
A qualified commercial electrical contractor can help evaluate existing conditions, plan new circuits and distribution, coordinate lighting and controls, address electrical upgrades, and integrate other electrical and low-voltage requirements into the overall project.The cheapest electrical plan isn’t necessarily the one with the lowest initial number. It’s the one that gives the project team a realistic understanding of the work before construction begins.