Building History since 1909

Since its founding in 1909, I&L has provided quality construction services and has established a standard for performance with integrity that is the foundation of the company’s relationships with customers, architects and engineers, subcontractors and employees. A tradition of accomplishment and a spirit of commitment drive the firm’s operations into the future.

Over 100,000,000 Sq. Feet of Completed Construction Projects

First Retail Project Built in 1954

Project Experience

Select Experience

The projects shown are a select few showing Irwin & Leighton's depth of experience and knowledge within the Commercial Construction industry.

Project Experience
New Outpatient Facility, Capital Health System

New Outpatient Facility, Capital Health System

Healthcare & Senior Living, Medical Office Building, Select Experience

Tenant Fit-Out, Main Event Entertainment

Tenant Fit-Out, Main Event Entertainment

Retail/Hospitality, Select Experience

New Store, Target Corporation

New Store, Target Corporation

Retail/Hospitality, Select Experience

New Assisted Living Facility, The Francis E. Parker Memorial Home

New Assisted Living Facility, The Francis E. Parker Memorial Home

Healthcare & Senior Living, Select Experience, Senior Living

Meet Our Team

As an employee owned, privately held business, we hire the best, brightest and most talented individuals in the business. We pride ourselves on our corporate culture, passion for success and our drive to make every customer our next 50 year customer.

Bringing more value to your vision.
Bold thinking begins where conventional thinking ends.

Latest News

The latest news from Irwin & Leighton including industry trends, the best construction blogs and publications and updates on our latest project news.

Irwin & Leighton and our Community Action Committee is proud to support @Philabundance this year as part of our #GivingTuesday. Thank you to our team for supporting this initiative to help those in need in our community. #community #givingback #teamwork

The Irwin & Leighton Family wishes a healthy, happy and safe Thanksgiving to all of our friends, clients & partners. Happy Turkey Day!

The new cottages at @ActsRetirement Normandy Farms are looking fantastic! Ranging in sf from 1700sf to 2000sf they are spacious and light-filled. Residents picked finishes to make this space their own. #sunporches #100acreview #seniorlivingconstruction #independentliving

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Work With Us

As a leading builder, Irwin & Leighton partners with the top subcontractors who have a prime focus on safety and performance.