How much does office space cost in Naperville per square foot?

Class A office space in Naperville typically rents for $20–$32 per square foot, depending on lease structure, build-out, and location along the I-88 / Route 59 corridor. McDowell Centre suites are quoted at $22.00 PSF MG.

What is the difference between MG (Modified Gross) and NNN leases?

Modified Gross (MG) bundles most operating expenses — utilities, taxes, building insurance, common-area maintenance — into the quoted rate. Triple Net (NNN) quotes a lower base rate but bills those operating expenses separately, so the all-in cost is usually similar or higher.

Do tenants pay for build-out in Naperville?

It depends on the landlord. Turn-key suites — like those at McDowell Centre — are delivered move-in ready with no upfront tenant build-out cost. Shell space typically requires the tenant to fund or amortize the build-out.

Guide · 2026

Naperville Office Space Cost Guide

Whether you're opening a private practice, relocating a small firm, or expanding into the western suburbs, here's what office space actually costs in Naperville, IL in 2026 — and what to look for beyond the headline rate.

Typical Naperville Rates

Naperville office rents vary by class, location, and lease structure. Here are typical 2026 ranges across the I-88 / Route 59 corridor:

Class	Typical Rate (PSF)	Lease Type
Class A	$24 – $32	MG or NNN
Class A (value-priced)	$20 – $24	MG
Class B	$16 – $22	MG or NNN
Shared / coworking	$400 – $1,200/mo flat	All-inclusive

McDowell Centre suites are quoted at $22.00 PSF MG — Class A finishes at a value-priced rate.

Modified Gross vs Triple Net

The headline number isn't the full picture. Two leases at "$22 PSF" can cost very different amounts depending on what's included.

Modified Gross (MG) — Base rate includes most operating expenses: real estate taxes, building insurance, common-area maintenance, sometimes utilities. Easier to budget.
Triple Net (NNN) — Lower base rate, but tenant pays taxes, insurance, and CAM separately. Add roughly $6–$10 PSF to compare to an MG quote.

Hidden Costs to Ask About

• Build-out — Is the suite turn-key, or do you need to fund construction?
• Utilities — Bundled in MG, billed separately in NNN, included in shared offices.
• Janitorial — Usually landlord-provided in multi-tenant Class A buildings.
• After-hours HVAC — Some buildings charge for HVAC outside business hours.
• Parking — Free at most suburban Naperville buildings (including McDowell Centre).
• Conference room access — Shared rooms can save you 100+ SF of dedicated space.

What a Real Lease Looks Like

For a 1,000 SF Class A suite in Naperville at $22 PSF MG, the math works out to roughly $1,830/month all-in — utilities, taxes, CAM, building insurance, conference room, and on-site parking included. The same suite at $18 NNN would land closer to $2,000–$2,200/month once operating expenses are added.

Cheaper Alternative: Shared Office Space

If you don't need a full suite, a private office in a shared office space is the lowest-overhead option in Naperville — flat monthly rate, all-inclusive, no build-out, no long-term commitment. Typical range is $400–$1,200/month for a private 150–350 SF office.

Currently at McDowell Centre

1,000 – 4,550 SF Class A suites at $22 PSF MG · Shared private offices from $400/mo · Turn-key build-outs · On-site parking · 1952 McDowell Rd, Naperville.

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