Cowls Building Supply is more than a typical lumber and hardware store; it is a unique lumber and building-materials business that blends the best of the last three centuries with the best of the new.

Family owned and operated since 1741-our history, veteran staff, and contributions to local arts and education set us apart from the competition. As a family owned building supply business, Cowls Building Supply is committed to public service and to making a contribution to the local and regional communities.

Cowls Building Supply has also committed itself to helping and being a part of our local community. We are proud supporters of our local Boy Scouts and Habitat for Humanity. We also, for the first time in 2013 supported the Jimmy Fund. Cowls supports our local businesses and the community that we live in.

Throughout its nine generations of family ownership, Cowls Building Supply has been unique among the lumber and building materials businesses in the Pioneer Valley and neighboring regions. Constantly evolving, it has grown from offering timber and hardware to providing a wide range of quality products and services to professional contractors, remodelers, and do-it-yourselfers.

It started in October, 1741, when Jonathan Cowls crossed the Connecticut River from Hatfield with his family. They were one of the first five families to settle land in what was then Hadley and is now North Amherst. Over the next 270+ years, the Cowls family purchased timberlands in approximately thirty other towns in Hampshire and Franklin counties, winning numerous awards along the way for sustainability and forest stewardship.

In 1980, Paul C. Jones, 8th Generation Cowls, opened Cowls Building Supply. The store quickly became a successful, full-line, full-service retailer of lumber, paint, hardware and building materials. More recently, the new Kitchen Design Center and Door and Window Showroom was added.

While the Cowls Sawmill closed in 2010, W. D. Cowls, Inc. Land Company has set new goals for sustainable forestry, land conservation, alternative energy, and environmentally-conscious development. Today, you can still find the 9th generation of Jonathan Cowls’ descendants, Evan Jones and Cinda Jones, at the forefront of that mission.


Clarissa Harwood, Paint Specialist:
Don Monroe, Paint Specialist:


Jacob Uzel:
Rick Gwosch:


Joe Black:



Bob Healey:
John Gummere:
Evan April:

From Our Clients

We just wanted to thank you for our new windows. Your design solution was just what we were looking for. The windows are beautiful and the crew that installed them were courteous, professional and did an excellent job.

Thom Levy

I just wanted to take a moment to thank you for your part in the sale/installation of our beloved Integrity replacement windows (and 8’ slider). As you know I myself was in the millwork business for 15 years so I may know a quality window when I see one and I certainly recognize professionals in the sales/installation process. Cowls low pressure, all in one price made the whole job easy for my family. There was surprisingly little disruption, the installation happened when and as you said it would, and the positive change to the comfort of the house is unbelievable.

Geoff Branch

We were fortunate to work with Phil Morin from Cowls during the summer of 2015 when we installed five new Integrity windows and a three panel sliding door. When we called Phil we had already discussed the scope of project with several contractors but it wasn’t until we met Phil that we felt 100% confident that he would be able to manage all the pieces and complete the job well. Phil took the time to recommend products and strategies that met our budget and aesthetic. He was also able and willing to trouble shoot when needed. The integrity windows are really beautiful, weather tight and easy to operate. We are grateful for the Cowl’s team and so glad we did the work!

Emily Howard

We had the need to replace an older bathroom window and I asked around at various hardware/lumber yards about the service they provided. Cowls was the only place I talked to that had complete service from start to finish. Other places would say “Oh yes we can put you in touch with someone who does this” but Cowls came and measured the window, had it custom made, arranged the installation and removed and dispensed with the old window. Very professional and very well done.

George Reynolds

Love the friendly knowledgeable staff, always a good experience.

Ryan Willey

A wonderful local company with superior service!

Stephanie Oates

When renovating our house last year, my wife and I ordered Mathews Brothers triple-pane windows, as well as a number of doors, through Cowls Building Supply. Ordering the doors was a snap; John at the front desk was very thorough to ensure that all dimensions, door knob positions and hinge colors were correct.

Scott and Mary Biddle

Staff is incredibly knowledgeable!! Friendly too!!!!

Brian McNamara

Excellent lumber, hardware and paint selection. Terrific sales support. A great place.

Tim Holcomb

A great company run by and with exceptional people.

Bill Conkey

Cowls is one of the friendliest, best stocked and knowledgeable lumber/ paint/tool stores I have ever had the pleasure to be in. The staff are the friendliest and most helpful people, who actually really care a lot about your project and how best to execute it. Keep doing what you’re doing . I would drive miles outta my way to give you my business.

Anonymous Google User

I just wanted to send a quick note thanking you and your team for the way they handled our issue with the prime select not holding paint. Joe Baillargeon was right on top of it with the vendor representative in less than 24 hours and we had new improved stock 24 hours after that.

It solidifies our decision to use Cowls as our sole source for lumber and building materials even when I know some products can be had elsewhere for less, I couldn’t imagine your competitors across town delivering this level of service.

Lou Hale & Jim West