General Millwork Supply, Inc.

Quality Window and Door Supply
to Homeowners, Contractors, Architects and Designers
Throughout San Diego County Since 1991.

“A Commitment to Excellence Which is Second to None
Service & Quality Guaranteed!”
“Largest Showroom for Contractors, Builders, and Do-It-Yourselfers”

Window and Door Supplier to San Diego County Area Contractors, Architects and Homeowners: General Millwork Supply

  • A full scale window and door dealer located in San Marcos, CA
  • Over 50 years of experience in the building industry
  • Family owned and operated since 1991
  • Specializing in selling quality nationally known brand-name windows and doors at competitive prices.
  • One of the largest showrooms in San Diego County; Proudly displaying windows, doors, skylights, moldings and door hardware to match virtually any architectural style and budget plan.
  • We are supplier only, we do not provide the installation, but refer licensed contractors.
  • Offers many fine lines of quality wood, fiberglass, vinyl and aluminum windows, doors, entry doors, and skylights. Also supply interior doors, wardrobe doors, decorative mouldings and many other specially building products.

One-stop Shopping:

  • Windows, Doors and Skylights – Including replacement windows, French patio doors, front entry doors, sun tunnels and more
  • Hardware and Moldings – Including a broad range of moldings and door hardware to compliment your design
  • More Products – We offer more than you think… Faux beams, cabinet & bath hardware, fireplace mantles and more

We are committed to providing you with the excellent customer service and prices you can afford!
Selecting Windows, Doors, Skylights, Hardware, and Molding
There are so many manufacturers, styles, sizes and materials to choose from… It can all be very overwhelming. If you are looking to simplify your decision making process, Call us today or come into our showroom so we can assist you with your project.

Take a Tour Of Our Beautiful Showroom

Click this link to explore General Millwork Supply Inc.:


Our Projects

  • Windows
  • Windows
  • Doors
  • Doors

Our Brands


  • General Millwork is incredible.  Their service is professional and they take care of your needs every step of the way.  When you are replacing or remodeling windows and doors, it makes a big difference dealing with a professional rather than a home improvement chain store!

    Paul C.   March 2014
  • I agree with other reviews that have been stated; General Millwork is professional, contractor, accommodating & competitive.  As a licensed contractor, it means a lot when a vendor recognizes the importance of my time.  Thank you!  Look forward to doing business with you in the future.

    R.B. Imperial Beach   January 2015
  • I have been buying doors and windows from General Millwork for about 20 years.  They have a nice showroom you can bring customers into to show them different products.  Orders arrive on time and complete, plus they stand behind their products.  I recommend General Millwork Supply…

    Rob Witton   August 2014
  • I have been purchasing windows/doors from General Millwork for the past 8+ years.  They have always provided a professional service that has helped make my projects go smoothly.  The knowledge they have of their products is unmatched.  I have completed hundreds of construction projects utilizing windows/doors I have purchased from General Millwork and will continue to do so.

    E and G Builders   May 2014
  • We had a wonderful experience with General Millwork Supply where we purchased all our doors and windows for our large remodel.  They were professional, knowledgeable, helpful, friendly and worked seamlessly with our contractor.  We would recommend them in a heartbeat.  Our windows and doors are beautiful and are a dream to use.  Great Company and Service

    Debbie F.   July 2013.
  • All the Windows and Doors for our remodel were supplied by General Millwork Supply.  They were patient with our request, informative and VERY Friendly.  We would recommend them to anyone looking for windows and doors.

    Michelle B.    June 2013
  • I have had the pleasure of working with General Millwork Supply for the last 20 years.  They have provided me with countless window and door installations using the industries highest quality products.  General Millwork has a professional staff with knowledge of all the products they have to offer and provides great service. I look forward to working with them for many years to come!

    — Chris Corley – Corley’s Design & Build
  • Until we found you through your advertising, we had worked with a number of window & door suppliers and had very poor customer service.  Since we have met your company, we can now rely on first class customer service.  We will continue to use your company in the coming years. Thanks

    — Jason Brandt, CEO – JJ Remodeling & New Home Construction, Inc
  • Thanks so much for your follow-up on the doors and windows. Great to have someone as professional as you working with me. I don’t expect that I’ll need any more windows anytime soon, but I’ll be sure to recommend you and the joy at General Millwork. Thanks again.

    -Nicholas M. Gistaro D.M.D
  • I wanted to thank you for all your patience during our window order. I think it began in February 2009 and took the longest time to get the rightsize and type decided on. You have been most professional and courteous throughout the whole transaction.
    Thank you for answering all my questions, bearing with my confusion and constantly changing time frames. After this house is done, I wouldlike to send you some photos. I am sure you can say a lot about yourcustomers but hopefully you will just admire the windows and forgetabout saying too much about us…
    I would recommend you in a heartbeat to anyone looking for new or
    replacement windows.
    It was a pleasure to work with you. Once again, I appreciate your kindness, attention to details and patience.

    -Lori-anne Elinsky
  • A decade ago your company replaced our home’s window with vinyl
    CertainTeed windows. Over time, the glass in two of these became
    defective and in need of replacement. I therefore contacted your front office to initiate the process.
    The purpose of this letter is to let you know that in my view, the people that work for you are a “Top-Drawer” class act. Through the efforts of your staff, our difficult-to-find paperwork was located, the glass ordered, and an installing company recommended. All of the above was done in a timely, professional, and courteous manner. May your company thrive.

  • We just wanted to thank you for your excellent customer service. It was such a welcomed response when we had a problem with our Milgard windows, that you had Milgard send a technician out right away to replace the glass in the windows. This kind of service is hard to find these days; so thank you!

    -James & Sue