Independently Rated Highest in Quality
F i f t h
Consecutive Year
Originally Earned:
October 2012
We declare that Alexander Company HAS QUALIFIED for and continues to meet the Ongoing Research and Rating Requirements for Diamond Certified® status.
Certificate #1919
(650) 525-4171
1322 Marsten Road
Burlingame, CA 94010
John (L) and Jeff Alexander are owners of Alexander Company.

Alexander Company installs replacement windows and doors for residential clients in San Mateo County and San Francisco. In addition to its professional installation capabilities, the family-owned and operated company maintains a large showroom in Burlingame that carries a wide variety of products, including vinyl, aluminum, wood and fiberglass windows made by leading manufacturers such as Simonton, Marvin, Anderson, and Milgard.

Owners John and Jeff Alexander are second-generation proprietors of Alexander Company—their father established the business in 1971 and taught them everything he knew about installation, sales and management before retiring two decades ago. “This company has a reputation for working with integrity and quality, and my brother and I work hard to uphold that,” says Jeff Alexander. “We stand behind our products on both the installation and sales sides, and we always keep up-to-date with industry standards and trends.”

Alexander Company’s partnerships with the window industry’s top manufacturers allow it to act as both the dealer and contractor on its clients’ projects, which ultimately saves time and money. “This is a one-stop shop—instead of purchasing windows and hiring a subcontractor to install them, our customers know they can trust us to handle everything ourselves,” says Mr. Alexander. “We take responsibility for every detail.” 

Company Philosophy

“We’ve learned to always put ourselves in our customers’ positions, so we do everything we can to ensure their satisfaction and make their experiences as positive as possible. Our number one goal is to utilize our window and door expertise to help our customers create their ideal homes.”

Serving San Mateo County and San Francisco

Windows & Doors
Design & Installation

Andersen
Andersen
Integrity
Integrity
Marvin
Marvin
Milgard
Milgard
Ply Gem
Ply Gem
Simonton
Simonton
Tru-Frame
Tru-Frame
Velux
Velux

Comparative Summary

Few window companies earn the prestigious Diamond Certified award, which means they’ve been independently rated Highest in Quality. Even fewer can also claim more than 40 years of industry experience, but that’s exactly the case for Alexander Company. According to co-owner Jeff Alexander, this longevity is important for providing customers with peace of mind and ensuring their...

Frequently Asked Questions

Q: How soon can you start my project, and how long will it take to complete?
A: "We typically start a project four weeks after the initial order. The duration of a job varies depending on size—we can finish most jobs in one or two days, but it could take up to a week if it’s a large project. "
Q: Do I need to get a permit or schedule an inspection for my window project?
A: "Permits are required in many cases, but we’ll take care of that whole process, from pulling the permits to ensuring everything is up to code. We can also coordinate with the city to schedule an inspection if necessary. "
Q: Will I need paint work done after my windows are installed?
A: "It depends on the nature of the installation. Most retrofit installations don’t require painting, but if they do, we can recommend some good companies. "

Map

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Industry Info

If you’re considering replacing your windows, consider the advantages of dual pane products.
The most substantial benefit of dual pane windows is their ability to provide superior insulation, which in turn increases energy efficiency throughout a home. The energy savings alone often make it a worthwhile investment to have your old, single...
Findings based on statistically reliable research from 175 surveys

Customer Satisfaction

Survey Question: On a scale of 1 to 10 how satisfied were you with the quality you received?
Chart.

Company Credentials

Workers Compensation
Liability Insurance
License Verification
Business Practices
Current Complaint File

Customer Loyalty

Survey Question: If you needed this product or service in the future, would you use this company again?
Chart.
99%
n = 175

Diamond Certified Qualification

Based on 175 customer surveys, we declare
Alexander Company
has passed all rating steps and has earned
The Diamond Certified Award
No. 1919
Continuously qualified since October 2012.
David Pak
Director of Ratings Research
American Ratings Corporation

Verbatim Survey Responses From Only Verified Customers

Anne N. Verified Customer Name
"The quality of work they do and the materials they use"
Research conducted by American Ratings Corporation. Ratings Methodology

Diamond Certified® Video Profile

Company Capabilities Table

Alexander Company
1322 Marsten Road
Burlingame, CA 94010
(650) 525-4171
DCID6503733900

Mon – Fri: 8am – 4pm
Sat: 10am – 4pm

Serving San Mateo County and San Francisco

John and Jeff Alexander, Owners
40
20
EPA Lead-Safe Certified
642553
Liability Insurance, Workers' Compensation
Electric & Gas Industries Association (EGIA)
1971
Windows & Doors, Design & Installation
Andersen, Integrity, Marvin, Milgard, Ply Gem, Simonton, Tru-Frame, Velux
1,200
Residential
San Mateo Windows

Photo & Video Gallery

Survey Responses For

Alexander Company

Alexander Company: Average 9.4 out of 10 based on 175 unique customer surveys of customer satisfaction.
Anne N. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I have recommended them many times. They are a very good company."

"The quality of work they do and the materials they use"

Ben A. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I have already recommended them to a fellow I play tennis with. They are cost effective, competitive, and they do a great job."

"The overall experience was good. They came and it was no nonsense. They had competitive pricing and the timing and the scheduling were good."

Benny T. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"Great company to use"

"Very upfront, and they do exactly what they are supposed to do."

Ed F. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are very thorough, they listen to what you have to say, they give you suggestions on things, and if there are any problems, they are great on follow up."

"They are very professional."

Elena C. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"Definitely use them."

"They are very easy to work with and I really enjoyed the quality."

Gene S. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I recommend them."

"I think they are good."

George F. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are very professional and Walter did not pressure me at all. He gave me the quote and said that was it. He was also very congenial."

"They were very professional and very patient. They answered all of my questions."

George M. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I would recommend them. They're really good."

"I just liked my whole experience from beginning to end."

Greg B. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"Jeff, the owner, is number one in this industry."

"I liked working with Jeff. He is creative, professional, and personable. He's the best."

Jerry T. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They did an excellent job."

"They are on time."

Jim B. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I think it is true when they say they go above and beyond. They completely refaced our stucco on the front of our house at no cost as he wanted to make it look seamless as opposed to patchy. It is great."

"I liked the people. They were very competent and friendly. They were thorough."

JoAnne F. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"The service was exceptional and the quality of work was exceptional."

"I would give them an '11'. I liked the staff they had. They were courteous, friendly, and very informative."

John R. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"Competent, knowledgeable, and willing to go the extra mile"

"They are competent and they do clean work."

Kathy K. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"Use them."

"They came on time. They finished the entire job faster than they had first thought. I was impressed with how hardworking and dedicated the crew was."

Kenneth L. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are fabulous and competent."

"They are wonderful and they execute well. They are an end-to-end solution provider and they are on time and on budget."

Lisa A. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They were very accommodating as I had some unique circumstances."

"They were thorough."

Lynn T. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"You are a fool if you don't hire them."

"The quality is there and they come in, they know what they are doing, they are quick, and they clean up after themselves. It is a beautiful product and they stand behind their product. If something goes wrong, they are there. I have recommended them and everyone who has hired them has been happy."

Nancy M. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"It is locally owned and you have access to them. It is not a franchise and I was happy with them."

"It is local."

Phil B. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They do really good work, they have good products, and their service is great. Their prices are fair and their service is timely."

"I can trust them to give me the best advice for what I need at the best price."

Michelle W. Verified Alexander Company Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"To use them, and I have recommended them to some people."

"The crew they sent were very efficient, got the job done, and they were good guys."