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McCoy's Building Supply

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San Marcos, TX

Store Manager
Drew Van Winkle
Drew Van Winkle
Contact Us
Call: 512-396-1755
Fax: 512-396-1753
Email this Store
Store Hours
Mon7:00 AM - 7:00 PM
Tue7:00 AM - 7:00 PM
Wed7:00 AM - 7:00 PM
Thu7:00 AM - 7:00 PM
Fri7:00 AM - 7:00 PM
Sat7:00 AM - 5:00 PM
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Online Ordering

Place your order online for in-store pickup or delivery.

We Deliver

McCoy’s is proud to offer same or next day delivery.

Treated Lumber

When planning an outdoor project, it’s important to make sure the lumber you choose can withstand the elements.

That’s why your San Marcos McCoy’s carries YellaWood® pressure treated lumber treated with environmentally preferred Micronized Copper Azole (MCA) preservative. MCA protects the lumber from rot, fungal decay and termite attacks.


McCoy’s stocks doors in several common styles and standard sizes, allowing you to get in, get out and get building.

Doors special ordered through McCoy’s Millwork division are made to order which means we can personalize both interior and exterior doors to meet the needs of your project, whether it’s a single door or an entire house package.


We carry a variety of Atrium® aluminum and vinyl windows in stock to meet your building and re-modeling needs. We can also custom order windows to match the look and size of windows already in place. 

Looking for something more unique? Pella® windows are beautiful, energy-efficient windows which truly reflect the style of your home and are available through Special Order.


Searching for a certified STIHL® dealer? Your San Marcos McCoy’s Building Supply has STIHL weed eaters for sale along with chainsaws, leaf blowers and trimmers from this premier brand in both gas-powered and battery-powered styles. Our technicians can help with any repairs or replacement parts that you might need.

Farm & Ranch

McCoy’s is a one-stop shop for all your Farm and Ranch needs. Secure your pastures with Stay-Tuff® fencing and manage your cattle operation with Priefert® calf tables, gates and other livestock equipment. We even have feed and pet supplies!


Whether you are looking to repair your roof or replace it entirely, McCoy’s has the roofing supplies you need for the project including underlayment, nails, shingles, and much more.

Check out our Owens Corning TruDefinition Duration® Shingles for ultra-high performance dimensional laminate shingles featuring patented SureNail® technology. 

About McCoy’s Building Supply

Located just off of Interstate 35, McCoy’s Building Supply is proud to be a part of the San Marcos Community. The staff are dedicated to providing the best customer service for professional contractors, do-it-yourselfers and everyone else in between.

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