Regus 100 Illinois Street
Our riverside location in downtown St. Charles is the perfect spot to lay down roots for your business. The Plaza, a place which turns concentration into innovation, offers businesses of all sizes a colorful office space, packed with business grade technology, a sunny terrace, and room to grow. Conveniently located for airport connections, a stone's throw from the main street and walking distance from the beautiful Pottawatomie Park, The Plaza offers a range of productive and flexible working spaces, behind an Italian-style, waterfront exterior.
Private offices at 100 Illinois Street
Choose one of the private office options below and submit an inquiry — our team will get back to you with availability and exact pricing.
private office
1-person Internal Standard Individual
- Available now
1 people · 6–7 m² · floor 2. Indicative monthly pricing: $325/month (24+ month term), $521/month (12–24 month term).
private office
1-person Internal Suite - Large
- Available now
1 people · 6 m² · floor 2. Indicative monthly pricing: $325/month (24+ month term), $521/month (12–24 month term).
private office
2-person External Superior View Office
- Available from 1 Sept 2026
2 people · 9 m² · floor 2. Indicative monthly pricing: $650/month (24+ month term), $1,041/month (12–24 month term).
private office
2-person External Standard Office
- Available now
2 people · 10 m² · floor 2. Indicative monthly pricing: $650/month (24+ month term), $1,041/month (12–24 month term).
private office
2-person Internal Economy Office
- Available now
2 people · 8–9 m² · floor 2. Indicative monthly pricing: $650/month (24+ month term), $1,041/month (12–24 month term).
private office
2-person Internal Standard Office
- Available now
2 people · 8–10 m² · floor 2. Indicative monthly pricing: $650/month (24+ month term), $1,041/month (12–24 month term).
private office
2-person External Economy Office
- Available now
2 people · 8–10 m² · floor 2. Indicative monthly pricing: $650/month (24+ month term), $1,041/month (12–24 month term).
private office
2-person Internal Standard Team Room
- Available from 1 Sept 2026
2 people · 7–8 m² · floor 2. Indicative monthly pricing: $650/month (24+ month term), $1,041/month (12–24 month term).
private office
3-person External Economy Office
- Available from 1 Oct 2026
3 people · 11–12 m² · floor 2. Indicative monthly pricing: $975/month (24+ month term), $1,562/month (12–24 month term).
private office
3-person Internal Standard Office
- Available now
3 people · 12–14 m² · floor 2. Indicative monthly pricing: $975/month (24+ month term), $1,562/month (12–24 month term).
private office
3-person External Superior View Suite - Small
- Available from 1 Sept 2026
3 people · 11 m² · floor 2. Indicative monthly pricing: $975/month (24+ month term), $1,562/month (12–24 month term).
private office
3-person External Standard Team Room
- Available from 1 Jun 2031
3 people · 11 m² · floor 2. Indicative monthly pricing: $975/month (24+ month term), $1,562/month (12–24 month term).
private office
3-person Internal Standard Team Room
- Available from 1 Mar 2027
3 people · 11 m² · floor 2. Indicative monthly pricing: $975/month (24+ month term), $1,562/month (12–24 month term).
private office
3-person External Standard Office
- Available from 1 Mar 2027
3 people · 13 m² · floor 2. Indicative monthly pricing: $975/month (24+ month term), $1,562/month (12–24 month term).
private office
4-person Internal Standard Office
- Available now
4 people · 16–17 m² · floor 2. Indicative monthly pricing: $1,300/month (24+ month term), $2,083/month (12–24 month term).
Private office facilities
Great for work
- High-speed WiFi
- Fully furnished office
- Utilities included
Services & support
- On-site support and reception
Access & spaces
- 24/7 building access
- Meeting room access
Private Offices at 100 Illinois Street in St. Charles
Establish your business in a fully furnished private office in this prestigious riverside building in downtown St. Charles. Offices include high-speed WiFi, utilities, on-site support and reception, 24/7 building access and meeting room access. The Italian-style waterfront exterior overlooks the Fox River, with a sunny terrace and business lounge for your team. A downtown Main Street district address lends professional credibility near municipal services and dining.
Frequently asked questions
Private offices include high-speed WiFi, utilities, on-site support and reception, and meeting room access.
Yes, private office members have 24/7 building access.
Send an inquiry and the team will match a furnished office to your needs.
The building offers a sunny terrace overlooking the Fox River.
Yes, it sits in the downtown Main Street district near municipal services and dining.
What makes 100 Illinois Street special
Riverside building at 100 Illinois Street
Italian-style waterfront exterior overlooking the Fox River with a sunny terrace and business lounge.
Downtown St. Charles address
In the historic Main Street district near municipal services, dining and retail.
Green space nearby
Pottawatomie Park and the riverfront promenade are within walking distance.
How to get there?
Sitting at 100 Illinois Street in the historic Main Street district, the center overlooks the scenic Fox River and its riverfront promenade, with several parking areas within walking distance. Pottawatomie Park offers green space and recreation nearby, while the Arcada Theatre and St. Charles Public Library add cultural landmarks a short walk away. The downtown location keeps municipal services, dining and retail close at hand, all behind a distinctive Italian-style waterfront exterior.