Cornerstone Granite
since 2009
Examples of works performed by Cornerstone Granite
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About Cornerstone Granite — Ranked №1 Countertop Fabricator and Installer in Westminster, CO
total score
Exact value: 79.098964 out of 100.
According to The First National Ranking of Stone Countertop Fabricators and Installers in the U.S.
Cornerstone Granite, founded in 2009, ranked number 1 in Westminster, CO in the U.S. company ranking by Countertops Contractors Ranking — the first national independent ranking of stone countertop manufacturers and installers.
We included Cornerstone Granite among the top U.S. contractors after a thorough, multi-level manual selection process, backed by extensive research into customer reviews, ratings, and service quality.
Cornerstone Granite: Total Score & Key Ratings
The Total Score of 79.1 out of 100 achieved by Cornerstone Granite in our ranking confirms its well-deserved position. This score is based on an analysis of customer reviews from the most popular review platforms in the U.S., as well as an evaluation of 10 key customer service parameters conducted through mystery shopper research. In calculating the Total Score, we relied on the Customer Feedback Score — Cornerstone Granite has a rating of 4.7 out of 5 — and our team’s Mystery Shopper Score, which stands at 4.52 out of 5.
You can read detailed information and evaluations from our independent research of Cornerstone Granite’s work in the Mystery Shopper Report section, covering each of the 10 research points, as well as in the FAQ section on this page. On this contractor’s page, you can also read customer reviews — but most importantly, you can use our platform to contact Cornerstone Granite directly: call them, send a message via Facebook Messenger, or submit a request to receive a free project estimate and a consultation with their specialists.
General information about Cornerstone Granite
Do you want your countertop to be durable and functional but decorate a room design at the same time? Surfaces from natural stone are an excellent solution. Such solutions are shock-resistant; they serve for dozens of years. Contact Cornerstone Granite - Stone Counter Fabrication and Installation to order premium-quality countertops from granite, marble, or quartz slabs. Employees take into account clients’ demands to embody any idea. Craftsmen fabricate furniture pieces using modern machinery to guarantee physical properties preservation. The quartz countertops cost includes transportation to sites and installation.
Disclaimer:
The materials on this page are the result of independent research by Countertops Contractors as part of The First National Ranking of Stone Countertop Fabricators and Installers in the U.S. The evaluations are based on our methodology and Mystery Shopper approach: we called companies, requested estimates for a standardized project, and recorded their responses. Terms and reactions varied; the conclusions reflect only our experience at the time of the review. The final scores are a professional opinion, not a statement of fact: we do not guarantee that your experience will be identical, nor are we responsible for any subsequent outcomes of your interactions with contractors.
When using our materials, especially unique mystery shopper evaluations and structured contractor data, please credit countertopscontractors.com. This helps develop the project, increase industry transparency, and maintain the independence of the research.
Customer Feedback Score
reviews: 63
YELP
reviews: 4
reviews: 18
CoCo
reviews: n/a
Mystery Shopper Report
Staff friendliness
Staff Expertise
Company Age
Own Office
Own Production
Veterans Discount
Production time
Deposit Level
Quote Time
Affordability
Company services
Kitchen
Bathroom
Outdoors
Commercial
Fireplaces
Sill rail
Additional benefits of Cornerstone Granite
Onsite services
Wheelchair accessible entrance
Wheelchair accessible parking lot
Service guarantee
Credit cards
Debit cards
Accepts Credit Cards
Open to All
Countertop Installation
Granite supplier
Cabinet store
Countertop store
Reviews about Cornerstone Granite
All (20)
Google (12)
Facebook (4)
Yelp (4)
Dan Maier
Date: 2024-03-06 06:29:09
I am a contractor and use Cornerstone for all my Stone needs ( kitchen, bath or custom work). I have used many stone companies but not one compares to them on the quality, accuracy, design or reliability to deliver an amazing product. The staff are amazing and always make sure they are delivering exactly what you are looking for. I will only use Cornerstone! Not to me mention they do Cabinets also...one stop shop!
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James Butler
Date: 2025-01-16 20:12:25
Cornerstone Granite is the absolute best. If you're looking for beautiful stone for any project in your house at a fair price, look no further. My wife and I had a small project, and Joselyn helped us out with finding a remnant we loved and getting it cut to our specific dimensions. Not being a contractor, I of course provided the incorrect dimensions, and the slab didn't fit. I reached out to Joselyn and she was able to help me get it re-cut the next day with no charge--talk about customer service! Not only that, while we waited to have the stone cut, the owner was kind enough to give a tour of the shop. Great people. Great products. Great prices. Can't recommend them enough!! Will definitely be back for our next project!
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Daniel Kuzbiel
Date: 2024-01-08 19:52:47
I recently had the pleasure of working with Cornerstone Granite for my kitchen renovation, and I couldn't be more satisfied with their service. Right from the start, their team demonstrated exceptional professionalism and punctuality, making the entire process smooth and stress-free. The technician who visited my home for the initial assessment was not only skilled but also incredibly insightful. He offered some fantastic suggestions that greatly enhanced the overall design and functionality of my kitchen. It's clear that they have a wealth of experience and a keen eye for detail. The installation team faced a challenging task due to the issues with my cabinets and the uneven walls. However, they handled it with remarkable expertise and precision. The countertop was installed flawlessly, and it has completely transformed the space. Their ability to overcome these obstacles without compromising on quality is truly commendable. I'm thoroughly impressed with Cornerstone Granite's commitment to excellence and customer satisfaction. Their dedication to their craft is evident in the beautiful countertop they installed in my kitchen. I highly recommend them to anyone looking for top-notch granite installation services. They truly deserve a 5-star rating!
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Juston Thornton
Date: 2024-01-07 01:39:38
This company did a great job installing my counters and farm house sink 6-7 years ago. Unfortunately I needed to replace a couple clips that hold the sink up. Corner stone was available early on a Saturday morning and had the clips in stock. Best part is they gave me the clips for free and it was real easy to fix my sink.
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Caleb Stoll
Date: 2024-05-08 14:20:24
Cornerstone Granite designed and installed the cabinets for my basement kitchen. The design was great and they had many suggestions. The install was extremely quick and there was a lot of attention to detail. Any concerns were immediately resolved. The owner is just a fabulous guy and I highly recommend Cornerstone Granite.
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andrew meng
Date: 2024-02-13 16:28:36
Possibly the worst business incident I’ve had in my 20 years doing renovations. They got the island measurements wrong twice. Asked for 12” overhang on 2 sides of island for seating. Had it drawn in the cabinet plan and they still got it wrong. The first time they had a 12” overhang on one side and none on the other. The second time they had 11” on one side and 14” on the other. My client was very upset. Then they sent me the bill and want me to pay extra for the island remake that still isn’t right and added extra square footage that doesn’t exist. Wow just wow. I used to know the original owner of this company as I’ve used them for over a decade and he was great. Always made sure things were done properly or fixed them if they weren’t. The new ownership doesn’t seem to understand business ethics. I can not recommend using Cornerstone.
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Staci Mastroni
Date: 2023-05-12 18:44:48
Had countertops installed. Looks amazing. Top notch installers, perfect measurements. Job done quickly. Couldn’t be more happy with the install. Also just purchased a custom marble top for an antique table.
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Ani Anderson
Date: 2024-09-09 21:09:48
Working with Cornerstone was enjoyable and seamless from start to finish. The were very receptive about working around my schedule. Communication was excellent and they were able to answer all my questions as the project went along. The installers were timely and efficient, and eerything was cleaned up befor they left. The rounded Island is more beautiful than I had imagined. Also, they were willing to come back and round some of the sharp corner when they were back up in my neighborhood. I would definitely recommend Cornerstone.
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Brian H
Date: 2024-08-28 14:09:16
Cornerstone Granite did a wonderful job with five bathroom vanity countertops. Joselyn Garcia, our sales rep, got us a great deal on several beautiful quartz slabs, and the installation team was on time and quick. I would recommend them for any small or very large projects. Thank you.
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Trent Cunningham
Date: 2024-02-24 00:07:52
Andre, Chuey and team at Cornerstone Granite did an amazing job with our kitchen, bar and entertaining area remodel in Cherry Hills Village. Their price was competitive, turnaround time was 1 week and all stone was a tight fit. Andre, the owner, stopped by our project to be sure we were happy with the quality and service. We highly recommend Cornerstone and will use them again!
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Renée X
Date: 2021-04-27 18:02:01
Exceeded expectations. Where to start? When we received a quote for over $8k to simply replace our existing granite counter with a larger standard piece, using our existing half wall and some table legs we were overwhelmed at the cost. We decided we could do it ourselves for much less. We were partially correct. As with any DIY remodel, the goal posts tend to change as the project progresses. We finally decided on a design and now it was time to find a granite installer. Man, picking out and buying granite/quartzite in Colorado is much like buying a house - once you find the one you like you had better be ready to buy! We traveled to many stone yards looking at gorgeous pieces. Finally settled on one we both liked (a feat all on its own) and picked 3 fabricators from the list of preferred installers. I will admit, Cornerstone was not the first to respond but there was something about their facebook page that felt comfortable. It was important for us to pick someone reputable but local. We wanted quality but not outrageously priced. Like many, they would not put us on the measuring schedule until we secured a downpayment. While hesitant, I went ahead and scheduled. After speaking with Perla on the phone and explaining our unique design, she decided to send Andre out. Andre spent 2.5 hours with us during that session; measuring and discussing our options for the extremely large overhang. Andre suggested a metal fabricator, designed the support, and helped us determine how we needed to install the cleats to support the metal sub frame. After Andre left, I knew I had made the right choice. When the sub-frame was ready, Andre dropped it off. Once we had that installed, a second measurement was completed. One week later - 5 guys, Andre included arrived with the countertop to install. They were polite, clean, took safety precautions and worked diligently until the countertop was installed. The whole process took about 2 hours, including the under-mount sink installation. Cornerstone Granite was professional, followed up with us, and one of the better prices we received. They provided a two hour window and called before arriving. We love our new island - can't wait to work with Cornerstone when we get ready to complete the rest of the kitchen. *Pay no attention to our unfinished floors and cabinet trim. We did our own cabinet install. :)
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Rex Halbeisen
Date: 2024-06-27 18:47:02
We shopped at every known counter top company we could find and Cornerstone came out on top for us. Andre and his team do excellent craftsmanship work, do what they say, say what they do. One of the best home improvement contracting experiences I have ever had. I wish all contractors delivered such a high quality experience. Price, performance, quality and value. I will buy from them again and recommend them to everyone.
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Mandy Merkwan Cox
Great experience! Hope to have the opportunity to use Cornerstone Granite again. Professional and timely. Nice product and installation.
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Emmy Robertson
Cornerstone Granite has exceeded my expectations. Amazing customer service!! Best way to describe my experience, I felt taken cared of. I definitely recommend The Cornerstone Granite, their professionalism is outstanding.
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Jessica Kafer Nichols
We needed a couple pieces of granite for our basement and Cornerstone did an amazing job! Excellent quality and looks amazing. 🤩
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Eric Rosen
Very happy with price, selection, sales process, template, fabrication, and installation. Employees were very helpful and courteous. Cornerstone had a very unique slab of natural Quartzite that I had not seen at 9 other granite stores Highly recommend!
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Ron D.
Date: 2024-04-18 02:43:11
In 2017, Cornerstone Granite provided me with kitchen cabinets and granite countertops for my kitchen and bathrooms. They did a wonderful job. I recently had them back for a small job. I'm happy to see they are still providing quality work with a focus on fair pricing and customer support. I will always recommend Cornerstone Granite whenever I get the chance to offer my opinion. Thank you.
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Marissa P.
Date: 2021-09-09 03:20:48
When we were looking for a fabricator to help with a renovation project, we got several quotes and Cornerstone was by far the most competitive (by a long shot, really). We knew our project could be challenging as we wanted something quite specific, but Cornerstone was confident they could make it work. We worked with Karina, who was extremely knowledgeable, kind, and quick to respond. When we had issues with a supplier trying to sell us a damaged piece, Karina was quick to answer questions and worked to find an alternative supplier that a) didn't significantly change our quoted price and b) had what we were looking for. While other companies took days to respond and schedule, Karina took just hours and got us on the books right away. At the end of the day, our project turned out exactly how we hoped! We're thrilled with the work and the experience with Cornerstone, and can't recommend them enough.
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Laura K.
Date: 2019-10-03 01:33:21
I have used Cornerstone for a few of our projects and have been very happy with their attention to detail, ability to communicate well throughout the process, and provide excellent service in a timely manner. They were able to fit us into their busy schedule and go above and beyond expectations. We will be using them many times in the future.
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Niles J.
Date: 2021-04-26 22:46:33
Welp... this company was a huge disappointment. This company had several sections of available granite and one section that was not available (already taken by someone). Spent my time picking out a piece from the available sections, and getting a quote for fabrication, sink, etc. They marked it and said they would set it aside for 5 days while I checked where I wanted the sink cutout, etc. Hah, called back after the weekend and they put me on hold and then said they'd call back (they didn't). After another two calls, I was told that one of their contractors had taken it. They then claimed that they just hadn't marked it as unavailable before I picked it out. Funny thing, they made a point of going out and taping my name on the slab when I picked it. They also told me that it happens all the time and was an ongoing problem. So I'm left to guess whether they are incompetent or unethical. Of course, they could be both. I know which I think...
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FAQ About Cornerstone Granite — Based on Independent Research
What materials can I order a countertop from Cornerstone Granite?
What types of spaces does Cornerstone Granite fabricate countertops for?
What shapes of kitchen countertops does Cornerstone Granite fabricate?
What countertop design styles does Cornerstone Granite most often implement in Westminster, CO?
What is the service area of Cornerstone Granite?
What types of clients does Cornerstone Granite work with?
Does Cornerstone Granite have its own countertop fabrication facility?
Does Cornerstone Granite offer any discounts on countertop fabrication in Westminster, CO?
What is the price category of Cornerstone Granite in Westminster, CO?
Can I get a free consultation and a free estimate for the fabrication and installation of a countertop from Cornerstone Granite?
What is the fabrication and installation timeline for a countertop at Cornerstone Granite?
How long does it take Cornerstone Granite to prepare a quote for countertop fabrication and installation?
Does Cornerstone Granite offer cutouts for sinks, cooktops, or other elements?
What guarantees does Cornerstone Granite provide for its work?
Please Note
The answers in this section were compiled by the Countertops Contractors Ranking team and are based on both publicly available information and data collected through our independent research on Cornerstone Granite. We strive to keep all information up to date, but some details may be inaccurate due to recent changes within the company or incomplete data in public sources. If you notice any inaccuracies in the company description, please contact us to request a correction. Our analysts will promptly review your submission and update the information on this page if necessary.
Contact Cornerstone Granite for a Free Estimate
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5440 Lincoln St, Denver, CO 80216