If you’re a general contractor bidding a tenant improvement project, or a tenant trying to budget before signing a lease, the tenant buildout cost question comes up early, and a flat answer almost never holds up. Flavin Electric gets asked for a per-square-foot number constantly, and the honest answer is that it depends on more variables than square footage alone. This piece walks through what actually drives cost on a commercial tenant buildout in Chicago, where GCs and tenants most often get surprised, and how to get a number you can actually plan around.
None of this is meant to make the process sound more complicated than it needs to be. Once the real variables are on the table, a tenant buildout cost estimate is a straightforward thing to build. It just has to start from the actual space and scope, not a generic average.
Flavin Electric runs commercial tenant buildouts across Chicago, including work with general contractors like Courtland on the Brain Builders Academy project and Connor Construction on FIGS retail location, and holds a 5.0 rating across more than 323 Google reviews.
Why There’s No Flat Rate for a Tenant Buildout
Two suites the same size in the same building can have completely different electrical scopes depending on what’s going into them. A restaurant buildout with a full kitchen line draws very differently than a professional office suite, and a retail space with fitting rooms and point-of-sale stations needs different circuits than either one. Anyone who quotes a firm number without walking the space first is guessing.
That’s why an accurate estimate starts with an on-site assessment, not a formula. The assessment looks at the existing panel, the tenant’s actual equipment and layout plans, and anything specific to the building itself, then prices the real scope instead of an average.
This matters just as much for a GC pricing a bid as it does for a tenant reviewing a lease. A number pulled from a generic per-square-foot chart rarely survives contact with the actual space, and the gap between that estimate and the real cost usually shows up as a change order later in the project, when it’s far more expensive to absorb.
The Real Cost Drivers
Across most tenant buildouts in Chicago, the same variables move the number up or down:
- Square footage and the complexity of the electrical design
- Condition of the existing panel and whether an upgrade is needed
- Number and type of circuits required for the tenant’s equipment
- Lighting selections, fixture type, quantity, and controls
- Permit fees and inspection coordination, which vary by scope
- Specialty systems such as HVAC coordination, data wiring, emergency lighting, or EV charging
- Whether the building sits in a TIF district or carries landmark status, which can add review steps
Panel condition tends to be the single biggest swing factor. A panel that can’t support the tenant’s load needs an upgrade before anything else happens, and that cost is easy to miss if nobody checks it before the lease is signed.
How Permit Timing Affects Your Budget
Permit fees are one of the direct cost drivers above, but permit timing is a cost driver in its own right, even though it doesn’t show up as a line item. Chicago permits go through the Department of Buildings and require licensed electrician documentation, and larger commercial projects need a licensed Electrical Contractor of record. Inspection timing also varies by ward and inspector availability.
None of that shows up on an invoice, but it shows up in the schedule, and schedule slippage has real cost attached to it, whether that’s a delayed opening date, extended rent on an unoccupied space, or a GC’s crew sitting idle waiting on an inspection window. Building permit lead time into the budget from the start, rather than treating it as a rounding error, is one of the more consistent ways to avoid a buildout running over.
Projects inside a TIF district or a landmark building add another layer here. Those reviews can extend timelines beyond a standard commercial permit, which is part of why that status is worth confirming before a lease is finalized, not after.
Where Costs Sneak Up on GCs and Tenants
A few patterns show up again and again on tenant buildouts, and they’re the ones that turn a planned budget into an unplanned one:
- Not checking panel capacity before the lease is signed, so an upgrade becomes a surprise cost instead of a planned one
- Skipping a pre-lease electrical walkthrough, which a short site visit could have caught early
- Underestimating Chicago permit lead times, since city review adds schedule time that pushes cost with it
- Assuming the landlord’s contractor covers tenant-specific circuits, which leaves scope gaps that surface mid-project
- Not planning for future load growth, so a system sized exactly for today leaves no room once the business grows or adds equipment
Most of these come down to timing. A pre-lease electrical walkthrough, even a short one, catches panel and capacity issues before they turn into change orders after demolition has already started.
Ways to Keep Buildout Costs Down
A few practical choices, made early, consistently keep costs lower without cutting corners:
- Bundle permit pulls across multiple suites where possible, since grouping can reduce city fees and speed approvals
- Run conduit during rough-in for any space you plan to finish out later, since opening walls a second time costs more than doing it once
- Specify LED lighting from the start rather than swapping fixtures later because the original spec wasn’t energy-efficient
- Coordinate inspections across suites in batches to save time and fees
- Lock in scope before demolition starts, since change orders after walls come down are the most expensive kind
Getting an Accurate Number for Your Project
The only way to get a real number is a detailed quote from a commercial electrician who has actually walked the space and understands what the tenant’s business needs. Flavin Electric handles tenant buildouts across Chicago and holds a 5.0 rating across more than 323 Google reviews from commercial and residential clients.
A site visit typically covers the existing panel and service size, a walkthrough of the proposed layout, and a conversation about the tenant’s equipment and load needs. From there, the quote reflects what the space actually requires, not an average pulled from a chart. That’s the version of the number worth building a bid or a lease decision around.
If you’re bidding a project or budgeting before a lease, send us your plans for review or request a precon call, and you’ll get a scope-based estimate instead of a guess.
About Flavin Electric
Flavin Electric is a Chicago commercial electrical contractor founded in 2020 by Scott Flavin, who has been an electrician for 20 years. Flavin Electric is licensed and bonded, with a team of about 20 serving commercial and select residential clients across Chicago.
Ready to get an accurate number for your project?
Contact Flavin Electric at info@flavinelectric.com, or call (312) 815-2855.