San Francisco Bay Area General Contractor

San Francisco Bay Area General Contractor

G.T.I, Inc has been offering general contracting services to the San Francisco Bay Area and all surrounding counties since 1989. We are specialize in all kinds of Commercial and Residential Construction Work. You can view our full list of services under the Services Menu. With over 20 years experience, you are guaranteed to have peace of mind knowing Greentech Industry, Inc is handling your general contracting needs.

We are always looking to improve the knowledge base of our staff through regular product and installation training, so we can provide the maximum satisfaction to our customers.

Have you ever wanted to replace your old, unattractive, inefficient windows, but didn't know where to start? Congratulations! You have come to the right place.


GreenTech Industry. distributes and installs only the finest quality replacement windows and window treatments. Our experienced and dedicated windows and doors contractors deliver unsurpassed workmanship and timely installation – for both replacement and restoration projects.

We offer extremely fast delivery and expert installation. Our windows are custom made specifically for your home and standard colors can be installed within two weeks!

When it’s time to invest for the long term in your home, you need a consultant you can trust. That’s why at GreenTech Industry, we train our consultants to educate our customers in the products and services offered so that you, the customer, can make an educated decision when it comes to the care of your home.

We will reach this goal through maintaining our commitment to provide the highest quality products, installation and service to our customers.