Welcome to KC Company, your Gaithersburg area Pella Windows and Doors provider

The year was 1931, James A. Cassidy began doing business as a manufacturer’s agent, with several lines of “hard materials” including brick, mortar, lime, etc. His son Alan joined the organization after completing his duty in World War II while also completing his education at Catholic University. Alan then became the company president in 1959 eventually becoming sole owner in 1962. Soon thereafter, Alan acquired the local distributorship for Pella® Windows and Doors.

Under Alan’s leadership, the company prospered and established Pella Windows and Doors’ status for first-in-class quality in the marketplace. The territory expanded to include the state of Maryland, Northern Virginia, Delaware and Washington, D.C.

Kevin Cassidy joined the family business in 1974, marking the third generation of the Cassidy family to work for K.C. Company. Kevin was promoted to the role of president in 1987 and took ownership in 1997. Fast-forward to 2006, Most recently, Kevin shifted his role to Chairman of the Board, while promoting Stan Stokes to the position of president of all KC Companies.

Since the start of the organization, K.C. Company’s commitment to Gaithersburg homeowner satisfaction is evident in the Pella Promise, which assures the best product for your Gaithersburg area home and budget.

When you think about it, our success for 85 years is centered on a simple principle – to provide outstanding value to homeowners in Delaware, Maryland, Northern Virginia, Washington D.C., and now Birmingham AL and Baton Rouge LA. Making our customers a priority in all we do has helped K.C. Company blossom into one of the largest independent and locally owned Pella Windows and Doors retailers in America and we’re proud to continue our focus of quality, value and service. Our unquestionable commitment to homeowner satisfaction in Gaithersburg or any of our other service areas is summed up perfectly in The Pella Promise:

 The best products for your Gaithersburg area home and budget

  • Wood, fiberglass or vinyl windows and doors in a wide selection of sizes, styles and prices
  • A complimentary, no-pressure, in-home consultation, measurement and quote
  • Energy-efficient products
No-mess, no-guess installation
  • The majority of projects can be done in a single day
  • We leave our work area clean
  • We haul away your old windows and doors and dispose of them in an eco-friendly, responsible manner
  • Our Lead Pella Expert InstallersSM are recertified annually
Pella Care Guarantee
  • We stand behind our windows and doors with some of the strongest warranties in the business
  • Your Gaithersburg Pella® service team is merely a phone call away 

We hope you will visit our Gaithersburg area showroom and discover why Pella Windows and Doors are viewed to be the best!

Schedule Now!