Our Mission

We are committed to providing the best value to our customers through competitive pricing, industry recognized products and most of all, outstanding service before, during and after the sale.

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About Us

Door Tech, Inc. (D.T.I) has been in business for eleven years. We have experience in the pre-hung door industry with extensive knowledge of residential and commercial doors, mill work, and hardware. We have an extensive client list project ranging from semi – custom tracts, custom homes and commercial jobs.

Our mission at D.T.I is a simple one to provide the best quality products and service possible, accurately, and on time, according to your schedule. We would like to think that there are no projects that we cannot handle, weather it is a simple remodel or a large custom home.

We want you to rely on our door, mill work and hardware experience and knowledge so that it’s one less thing that you will need to worry about on your construction projects. Feel assured if you use D.T.I you will receive the best, with no surprises.

Contact Info

506 Portal St.

Cotati, CA 94931

Office Phone


Fax: 707-664-8845

Showroom & Office Open

Monday - Friday

8 am - 4:30 pm

We offer a FREE,

No obligation, No pressure

Advice and Survey