Do you bid design-build, or plan and spec?

Both. On plan and spec we bid the drawings as issued and price the alternates. On design-build we develop the electrical design with you, which usually costs less overall because the decisions that drive the price get made before the drawings are frozen.

Do you work for general contractors or directly for owners?

Both, and often for a tenant on a lease with the landlord's contractor on the other side of the wall. We are comfortable in coordination meetings and comfortable being the only contact an owner has.

Can you work nights and weekends so we stay open?

Yes, and for anything that drops power to a working building that is usually the right answer. We schedule shutdowns and changeovers outside your hours where the work allows, and tell you honestly when it does not.

Do you handle three-phase power and switchgear?

Yes — distribution panels, switchgear, transformers, three-phase feeders, and equipment hookups. We also do the load calculations and the utility coordination a larger service needs, including the one-line diagram for plan review.

Our new equipment needs more power than the building has. Now what?

That is a service upgrade, and it is worth starting early: the utility's timeline, not ours, is usually what sets the date. We run the load calculation, design the service, and handle PGE or Pacific Power and the plan reviewer so the equipment and the power arrive in the right order.

Who pulls the permits on a commercial job?

We do, for our scope, and we schedule the inspections. You get the closeout documentation — panel schedules, as-builts, and the inspection record — at the end, which is what the next tenant improvement will be built from.

The dark-clad frontage of a car showroom at street level, lit interior and timber-framed entry doors behind full-height glazing

4.9

40+

Commercial Electrical Services

Ground-up builds, tenant improvements, and service upgrades — on the schedule you were given.

(503) 908-1593

20+: Years in Business
100%: Licensed & Insured
2000+: Projects Completed

Showroom interior under linear ceiling lighting and a backlit display panel, cars on a polished concrete floor

The whole electrical scope

Multiphase Electric provides complete commercial electrical services, including new construction, tenant improvements, remodels, and electrical service upgrades.

We work directly with general contractors, property owners, developers, and project teams to provide accurate estimating, electrical planning, and coordinated installations from preconstruction through project completion.

Our commercial capabilities include power distribution, electrical services, lighting and lighting controls, EV charging, data and low-voltage systems, and other electrical infrastructure. We provide both design-build and plan-and-spec electrical contracting, with a focus on quality workmanship, clear communication, and keeping projects on schedule.

What we offer:

Clear planning from preconstruction to completion
Electrical systems built around your project needs
Coordinated installations that keep projects moving
Complete power, lighting, EV and low-voltage solutions
Quality workmanship with clear communication

Certifications & Licenses:

Electrical contractor

Certified trade ally

Certified installer

Contract scope

Every scope is permitted, inspected, and closed out with panel schedules and as-builts.

Commercial New Construction

Tenant Improvements

Commercial Service Upgrades

Design-Build Electrical

Plan & Spec Bidding

Panel & Switchgear Installation

Three-Phase Power Distribution

Equipment & Machine Hookups

Commercial Lighting & Controls

Data & Low Voltage Systems

Commercial EV Charging

Permit & Inspection Coordination

Why GCs return

One sub across the whole scope

Power, lighting and controls, data and low voltage, EV charging. One contract, one schedule, and nobody arguing about whose conduit that was supposed to be.
Your date is the date

A TI that misses its date is rent on a space nobody can open yet, and a rough-in that misses its date pushes every trade behind it. We bid a date we can hold, and then we hold it.
We work when you're closed

Shutdowns, changeovers, and anything that drops power get scheduled for nights or weekends where the work allows it, so the business does not lose a day to our crew.

Priced off the drawings, closed out on the date.

Drawings, walk-through, bid

We price from the plans and a site walk, and we flag what the drawings missed while it is still cheap — long lead gear, a service that won't carry the new load, a pathway that does not exist yet.
Coordination and rough-in

We sit in the coordination meetings, sequence around the other trades, and take our slot when it comes. Utility and plan review correspondence is ours to chase, not the GC's.
Trim, inspection, closeout

Devices, fixtures, gear, and controls get finished and commissioned, inspections are scheduled, and you get the closeout package — panel schedules, as-builts, and warranty — rather than a promise of one.

Trusted by Homeowners & Businesses

Max — see our reviews on Google Maps, opens in a new tab

I was referred to Multiphase Electric. We now use them from small changes, to our biggest projects. Clear communication, punctual, and guaranteed results. Highly recommend.
Michael McCord — see our reviews on Google Maps, opens in a new tab

Really happy with these guys. We did a complete rewiring of the whole house and New panel. Leti is awesome running the office. Very responsive. Vitaliy, John and all the other Electricians were fantastic. They are pros! Highly recommend this company.
Lashaunda Jackson-Gatson — see our reviews on Google Maps, opens in a new tab

I have been a customer of Multiphase since 2007, I wouldn't think to go anywhere else they go above and beyond and nothing but Quality work, you definitely can go to bed knowing you were in safe hands, Dave and the whole team has been better than Good to me

proudly serving the Portland metro

Multiphase Electric covers the whole metro — from Hillsboro and Newberg out to Corbett, and south through Oregon City to Molalla. Licensed in Oregon, with emergency service anywhere on this map.

Pick a city to see who covers it. Not on the list? Get in touch — we go further for panel and emergency work.

Map of the Portland metro with every town Multiphase Electric covers marked, from Hillsboro and Dundee west to Corbett east, and south through Oregon City to Molalla.

what GCs ask

What GCs, owners, and tenants raise during a bid. If yours isn't here, ask — we'd rather answer it than pad the number.

Do you bid design-build, or plan and spec?
Both. On plan and spec we bid the drawings as issued and price the alternates. On design-build we develop the electrical design with you, which usually costs less overall because the decisions that drive the price get made before the drawings are frozen.
Do you work for general contractors or directly for owners?
Both, and often for a tenant on a lease with the landlord's contractor on the other side of the wall. We are comfortable in coordination meetings and comfortable being the only contact an owner has.
Can you work nights and weekends so we stay open?
Yes, and for anything that drops power to a working building that is usually the right answer. We schedule shutdowns and changeovers outside your hours where the work allows, and tell you honestly when it does not.
Do you handle three-phase power and switchgear?
Yes — distribution panels, switchgear, transformers, three-phase feeders, and equipment hookups. We also do the load calculations and the utility coordination a larger service needs, including the one-line diagram for plan review.
Our new equipment needs more power than the building has. Now what?
That is a service upgrade, and it is worth starting early: the utility's timeline, not ours, is usually what sets the date. We run the load calculation, design the service, and handle PGE or Pacific Power and the plan reviewer so the equipment and the power arrive in the right order.
Who pulls the permits on a commercial job?
We do, for our scope, and we schedule the inspections. You get the closeout documentation — panel schedules, as-builts, and the inspection record — at the end, which is what the next tenant improvement will be built from.

Rest of the scope

All services

Finished kitchen in a new build — dome pendants over a navy island, under-cabinet lighting along the backsplash, and recessed cans in a coffered ceiling

Residential Electrical Services

New builds, remodels, and additions — temp power through final inspection.

Wall-mounted EV charger with its cable coiled on a timber-clad garage wall, a white electric SUV parked alongside

EV Charger Installation

Home and commercial charging, designed around your electrical service.

New meter base and service riser mounted on the stucco exterior of a green Portland house, with the mast run up to the roofline

Panel & Service Upgrades

Panel and service upgrades planned around the load you actually have.