New Construction Electricians in Naperville, IL — Residential & Commercial

When a build is on the schedule, the electrical work is one of the trades that quietly sets the pace. If rough-in slips, drywall slips. If trim-out gets sloppy, the final inspection bounces. Cob Services LLC has been wiring new construction across Naperville and the western suburbs for over ten years, working with homeowners building their forever home, custom builders putting up luxury homes east of Route 59, and general contractors handling commercial ground-ups and tenant build-outs across DuPage and Will County.

Every project is run personally by Alexandr Godonoaga, an Illinois-licensed residential and commercial electrician (License #26-00032356). He walks the site before quoting and stays the point of contact through final inspection. No subcontractor hand-off, no answering service in the middle.

Call (630) 427-5923 for a free estimate, or request service online.

Residential new construction electrical

We wire new homes from the ground up. That means coordinating with your builder during the framing stage, running the rough-in before insulation goes in, and coming back for trim-out once the walls are finished. The work has to be sequenced around the rest of the trades or the schedule unravels, so we keep the GC’s drywall date and inspection windows on our calendar from day one.

Custom home electrical wiring

Naperville’s custom home market is its own thing. The houses going up east of Route 59, around Clow Creek and Hobson West, around the Indian Prairie 204 boundary, are not the same job as a track home. The electrical loads are bigger, the lighting plans are denser, and the homeowner is usually involved in the walk-through deciding where outlets and switches actually need to be. We sit down with the builder and the homeowner during framing, mark the rough locations, and adjust as the plan changes. Common scope on a Naperville custom home: 200-amp service or larger, dedicated circuits for induction ranges and double ovens, EV charger rough-ins in the garage, smart home pre-wire for lighting controls and security, recessed lighting layouts in the kitchen and great room, and exterior receptacles for landscape lighting that the HOA usually wants underground.

Production and spec home wiring

For builders putting up production homes or spec homes on a tighter budget, the work is more about hitting the rough-in and trim windows on the day they’re scheduled. We pull permits with the City of Naperville, run the rough, schedule the rough inspection so it doesn’t hold up insulation, and come back for trim once the painters are done.

Rough-in and trim-out

Rough-in is everything that happens after framing and before drywall: pulling the home runs, setting boxes, drilling the studs and joists for cable, mounting the panel and running the service entrance to where ComEd will land it. Trim-out is the second pass: devices, fixtures, the panel directory, the GFCI and AFCI tests, the meter set coordination, and the final walk with the building inspector. Both phases get permitted and inspected separately, and we handle the paperwork on both ends.

Smart home pre-wire and EV charger rough-ins

The cheapest time to put structured cabling, security wiring, in-wall speaker runs, and 240-volt EV circuits into a house is during rough-in, before the drywall goes up. Adding any of it after the fact means cutting walls. We coordinate with low-voltage installers if the homeowner has a separate AV vendor, or we run the structured cable ourselves. For EV chargers, we usually rough in a 60-amp circuit to the garage so the homeowner can land a Level 2 charger on a 50-amp breaker without a future panel upgrade. More on the EV install side on our EV charger installation page.

Working with your home builder or general contractor

If you’re a GC running a single-family or small multifamily build, the part of the job we own is making your schedule work. We show up the day after framing is signed off, we run rough fast, we pass inspection on the first try, and we don’t leave you waiting on a meter set. We coordinate with ComEd on the service drop and we file the load calculation in the format the City of Naperville’s plan reviewer expects, so the permit doesn’t bounce back twice. If you’re a homeowner acting as your own GC, we can walk you through the inspection sequence and the order the trades have to land in.

Commercial new construction electrical

Commercial new construction is a different scope from a single-family build. The service is bigger, the panels are three-phase, the lighting is on controls, and the inspection process involves more sign-offs. We handle ground-up commercial across Naperville, Aurora, Lisle, Plainfield, Bolingbrook, and Downers Grove, and we work directly with the GC, the architect of record, and the building owner depending on how the contract is structured.

Ground-up commercial buildings

For a true ground-up — empty lot, foundation to certificate of occupancy — we run the full electrical scope. Service entrance and meter coordination with ComEd. Main switchgear, distribution panels, and sub-panels sized to the load schedule. Branch circuits for HVAC, kitchen equipment, refrigeration, and process equipment. Lighting and lighting controls. Emergency egress lighting and exit signs. Fire alarm raceway and rough conduit if a separate fire-alarm contractor is doing the head-end. We pull the electrical permit, file load calculations and panel schedules in the format the City of Naperville expects, and stay on through rough, trim, and final.

Tenant build-out and white-box build-out

Tenant build-out is the most common commercial new construction work in this area. A landlord delivers a white-box shell — four walls, a basic service, sometimes a stub of demising wall — and the tenant has to fit it out for their use. Restaurants, retail, medical and dental, professional offices, and small light-industrial all fall under this. The scope is everything from the panel inward: branch circuits for the tenant’s equipment, lighting design for the layout, dedicated circuits for POS systems and servers, data and structured cabling rough-in, sign circuits if the lease allows them, and any service upgrades the landlord requires when the tenant’s load exceeds the original allowance. (For renovations of an existing occupied space, see our remodeling and renovation electrician page — that’s where re-fits of previously-built-out spaces live.)

Restaurant, retail, and office new construction

Restaurants are the most demanding commercial new build we do. Hood circuits, walk-in cooler and freezer feeders, dishwasher, oven, fryer, the POS network, dedicated circuits for the espresso machine and the ice maker, code-required lighting in the prep areas, emergency lighting on the egress path, and the inspection coordination with the health department in addition to the city. Retail is more about lighting for merchandise display and dedicated circuits for the storefront. Office work is panel sizing for the open-plan workstations and the server room, plus the conference room AV.

Multifamily and apartment new construction

For new apartment buildings and condo projects, we wire unit-by-unit on a repeating layout, then handle the common-area work: hallway lighting on photocells and occupancy sensors, lobby and amenity space lighting, elevator equipment power, laundry and trash room circuits, and EV charging in resident parking where the building has to meet Illinois multifamily charging compliance.

Three-phase service, switchgear, and panel installation

Most commercial new builds in Naperville need three-phase service rather than the single-phase you’d see on a house. We handle the service entrance, the meter coordination with ComEd, and the install of three-phase main switchgear, distribution panels, sub-panels, transformers, and the branch panels that feed the actual loads. The panels get scheduled and load-calculated in the documents the city’s plan reviewer needs to approve before rough can start. (For the install scope outside of new construction — service upgrades and replacements on existing buildings — see our electrical panels page.)

Commercial lighting, controls, and emergency egress

Commercial lighting is rarely just fixtures any more. Most projects require occupancy sensors, daylight harvesting, dimming controls, and a controls panel that ties it all together to meet the energy code. Emergency egress lighting and illuminated exit signs have to be on a dedicated emergency circuit or on listed emergency drivers, and they have to be tested and documented. We coordinate the lighting design with the architect, install the controls system, commission it, and walk the inspector through it on final.

Naperville permits, inspections, and ComEd coordination

Every new construction project in Naperville requires an electrical permit pulled with the city before rough can start. The City of Naperville Transportation, Engineering and Development department reviews load calculations and panel schedules at plan review, and they inspect at rough and at final. We pull the permit, file the documents in the format the reviewer expects, schedule the inspections around the GC’s drywall and substantial completion dates, and meet the inspector on site for both visits. For service drops and meter sets, we coordinate the date directly with ComEd so the meter doesn’t get installed two weeks after the building is ready for it. For details on what permits a project needs, the city’s official permits and licenses page is a good reference: City of Naperville Permits & Licenses.

Why builders and homeowners pick Cob Services for new construction

Most of the new construction work we get is referral. A GC we passed inspection for last year calls us for the next four lots in the same subdivision. A homeowner who watched their custom build go in clean recommends us to their neighbor breaking ground. We don’t run a call center, we don’t pass projects off to a sub nobody hired, and the same electrician who walked your site at quote stage is the one running the inspection walk at the end.

You also get:

• An Illinois-licensed, bonded, insured electrical contractor (License #26-00032356)
• Direct contact with the owner from estimate through final, not an account manager
• Permits pulled with the City of Naperville and inspections passed on the first walk
• Load calculations and panel schedules filed in the format plan review expects
• Rough-in scheduled around your drywall date, not ours
• Trim-out coordinated with paint, flooring, and final cleaning
• ComEd service-drop and meter coordination handled directly

Service area for new construction electrical work

We handle new construction across Naperville and the western suburbs. Most of our recent work has been in Naperville, Lisle, Aurora, Plainfield, Bolingbrook, Downers Grove, Hinsdale, La Grange, and Burr Ridge. If you’re building in DuPage or Will County and you’re not sure if we cover it, call and ask.

Frequently asked questions

When should I bring an electrician into a new construction project?

For residential, the right time is during framing, before insulation. For commercial, even earlier — during plan and spec, so the load schedule and panel layout get reviewed before the drawings get stamped. Bringing the electrician in late almost always costs more than bringing them in early, because layout changes after rough-in are expensive.

Do you work directly with general contractors?

Yes. A meaningful share of our new construction work is as the electrical sub for residential and commercial GCs across DuPage and Will County. We send a single point of contact, we hit the schedule, and we don’t make the GC chase us for the rough inspection.

What’s the difference between rough-in and trim-out?

Rough-in is the wiring stage: home runs pulled, boxes set, panel mounted, service entrance roughed in. It happens after framing and before drywall. Trim-out is the finish stage: devices and fixtures installed, panel labeled, GFCI and AFCI tested, meter set, final inspection. They’re permitted and inspected separately, and there’s usually a few weeks of other trades’ work in between.

How much does it cost to wire a new home in Naperville?

Cost depends on square footage, the number of circuits, the panel size, and how much smart-home and EV pre-wire is in scope. A standard 2,500-square-foot single-family with a 200-amp panel runs differently from a 5,000-square-foot custom with a generator interlock and three EV circuits. We quote on the actual plan, not a per-square-foot estimate, because the plan is what determines the work.

Do you pull permits with the City of Naperville?

Yes, we pull every permit ourselves, file the load calculations and panel schedules at plan review, and meet the inspector at rough and at final. Permits are on us, not the homeowner or GC.

Can you handle commercial tenant build-outs?

Yes. Tenant build-outs are one of our regular commercial scopes — restaurants, retail, medical, dental, professional offices, light industrial. We handle the panel-inward work, coordinate with the landlord on any service upgrades the new load requires, and pass the city inspection so the tenant can open on schedule.

Do you do the smart home wiring or do I need a separate AV company?

Either works. We can run the structured cabling, in-wall speaker wire, and security rough-in ourselves, or we can coordinate with a separate AV integrator and just handle the line-voltage side. Either way, the cost-effective time to do it is at rough, before drywall.

Ready to talk about your build?

Call (630) 427-5923 or request a free estimate. For new construction projects, a site walk before quoting is usually the fastest path to a real number — we can usually get on site within a week.