Bay Area's #1 Window Dealer

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Martine K.

“ It's high quality work and these guys know what they're doing. They are tremendously experienced and everything was executed perfectly! 



Tish N.

I hope you are well and business thriving.

I think of you often and wanted to tell you again, almost three years later, how wonderful is our enclosed porch. We live on it and think we’d be miserable in this dark house without it. 

Ditto the sunroof at Piemonte. I’ve been nannying a little granddaughter there 40+ hours a week, and it remains delightful to use the big porch and have the furniture protected in lousy weather.  

Both projects were perfectly designed, engineered and constructed by perfectionists.  You brought my crazy dreams to life, for which 

We are SO grateful,


Craig S.

“ Their products and services are top in the industry - the best you can get. We had a great experience going to them and getting our [product] from them as opposed to 'big box stores.' Collier Warehouse goes above and beyond and it's a totally different experience than what is so common today.

They work efficiently and they are so courteous, [that it's] more pleasant to deal with them whenever possible. 

Ozge Gundogdu  

(Delta Accumulation)

Thank you very much again for your help with servicing our doors.

Both guys, Vicente and Gualberto were great to work with, they were very professional, kind and courteous. They explained the problem to us well, what they are going to do, what they did at the end and such. They had me test both doors to make sure we were satisfied. I wanted to share my feedback with you.

Our doors are functioning perfectly right now. We will be sure to save your contact information for future servicing needs.

Ken E.  

"Paul, just wanted to take a moment to thank you and the Collier team for the great work done in replacing the front window at our property on Kansas Street.   From the beginning with your great advice and counsel the experience has been exceptional.   The communication has been clear and the installation process was flawless.  Your installation team was efficient and showed great respect for the concerns of our tenant and myself.  When they left, it was hard to tell that they had even been there except for the new window which, by the way, have made a huge difference in the sound entering the property. 

Thank you."


Collier'S Promise

We promise to treat each and every project we handle with professionalism, and care. Taking the smallest details into account and completing the job with a high level of quality. We promise what we can delvier, and deliver what we promise.

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