Building Chicago's Interiors

Since 1977

Office

Construction & Renovation

Life Sciences

MedTech & Research

Amenities

Common Areas & Collaboration

Hospitality

Restaurant & Hotel

Built on Relationships.

Interior Alterations began in 1977 as just two carpenters with a firm belief that high-quality craftsmanship is only attainable if you have great client-contractor relationships. Over the years our clients and employees have grown, but our longevity is due to a steadfast adherence to integrity and open communication.


Learn More About IAI
50
Years and Counting
20M
Square Feet Constructed
Union
Affiliated
1000
Happy Clients

Our Expertise.

All Services
Project Management
Project Management
Budgeting | Feasibility | Execution
Amenities
Amenities
Common Areas | Meeting Rooms | Game Rooms
Life Sciences
Life Sciences
MedTech | Research | Biomanufacturing
Hospitality
Hospitality
Restaurant | Bar | Hotel
Restoration
Restoration
Fire | Flood | Insurance Claims
Medical
Medical
Physician Offices | Hospital | Urgent Care

Results You Can Count On.

Landmark & Historical Expertise

Decades of experience working within Chicago's most complex historical and landmark properties, navigating the nuances of preservation and adaptive reuse.

Longstanding Trade Relationships

Long-term partnerships with Chicago's best tradespeople — union-affiliated, trusted, and accountable — ensure quality and reliability on every project.

50 Years and Counting

Nearly five decades of proven results and over 20 million square feet constructed — a track record you can build on.

We're Ready When You Are!

Get In Touch
AON
United
Cushman & Wakefield
Salesforce
CBRE
Boeing
Tempus
Cboe
UL
Sterling Bay
CDW
JLL
Coinbase
American Heart Association
Verizon
Leo Burnett
Humana
BNP Paribas