L J Stone Inc
since 2018
Examples of works performed by L J Stone Inc
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About L J Stone Inc — Ranked №5 Countertop Fabricator and Installer in Ontario, CA
total score
Exact value: 54.708444 out of 100.
According to The First National Ranking of Stone Countertop Fabricators and Installers in the U.S.
L J Stone Inc, founded in 2018, ranked number 5 in Ontario, CA in the U.S. company ranking by Countertops Contractors Ranking — the first national independent ranking of stone countertop manufacturers and installers.
We included L J Stone Inc 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.
L J Stone Inc: Total Score & Key Ratings
The Total Score of 54.71 out of 100 achieved by L J Stone Inc 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 — L J Stone Inc has a rating of 4.5 out of 5 — and our team’s Mystery Shopper Score, which stands at 2.59 out of 5.
You can read detailed information and evaluations from our independent research of L J Stone Inc’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 L J Stone Inc 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 L J Stone Inc
They provide repairs and renovations, as well as install marble and quartz worktops. This custom countertop firm has experts on staff who have been in the industry for over 24 years; they can create one-of-a-kind surfaces to meet your exact specifications. Once a customer is interested, the staff will do everything it takes to make them happy with their countertop installation service. With the help of the professionals, replacing the old countertops is a quick and easy task. It contributes to lowering the likelihood of the project running behind schedule as well.
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: 24
YELP
reviews: 18
reviews: 6
CoCo
reviews: n/a
Awards 2026
We are updating contractor information and plan to recalculate the 2026 results after November 6, 2026. Ranking positions and awards may change.
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 L J Stone Inc
Wheelchair accessible entrance
Wheelchair accessible parking lot
Wheelchair accessible
Accepts Credit Cards
Open to All
Stone supplier
Cabinet store
Countertop store
Building Supplies
Cabinetry
Kitchen & Bath
Reviews about L J Stone Inc
All (31)
Google (9)
Facebook (4)
Yelp (18)
Robin Adair
Date: 2019-10-10 20:20:00
The woman working at the front desk was rude and unfriendly. On top of that, she refused to have the order loaded on my truck with the excuse that her guys were at lunch. I observed at least 3 workers in the warehouse that could've loaded it in 5 minutes, but she refused to have them do so. Totally unprofessional! Because of her horrible behavior I wasted a chunk of my time and my job was delayed. I will never again use LJ Stone because of this person and my company does hundreds of thousands of dollars in bath and kitchen remodels a year. I will use one of the many other stores on 9th street and I advise you do so also.
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Gerardo Reyes
Date: 2024-07-13 00:33:11
How much a piece 2x9 carrara white quartz?
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YOUNG LEE
Date: 2020-06-17 03:26:57
Good sales person and good return policy.also good quality of stone too. Friendly...
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Fabian Canche
Date: 2016-09-14 21:10:40
This company is good and very helpful they are very organized and have a nice clean warehouse. 👍
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Ken Safari
Date: 2021-11-10 01:55:11
Been supporting these folks for many years! Great quality, Excellent selections in Quartz and Granite, with most aggressive pricing! The owner and his sales representatives are very helpful and knowledgeable!
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Richard Leonard
Date: 2021-06-12 06:23:26
it was overwhelming, too many options, all of it gorgeous!
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Aldo Rocha
Date: 2021-08-16 19:31:11
I’ve been shopping here for about 3 years now . Service is excellent. My sales person Garry is number one in my book. Product options are great and service is even better. I have been to many other cabinet vendors , and this place is my go to now .
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Nathan Loveridge
Date: 2022-07-19 17:24:49
I've been working with LJ Stone now for about 6 years and I enjoy shopping here. Gary is a pleasure to do business with. They have a very nice selection of stone and quartz. I have not had any problem with any of the materials that I have purchased from them. It is always a pleasure to do business with LJ Stone.
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Gary Liu
Date: 2016-10-10 16:27:45
Very helpful. they are very professional. have a very nice warehouse and showroom. over 100+ colors counter tops.and very good customer service.
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Ariana Lindsey
Great service and very well kept areas. They had a cool show room, and a good sized warehouse of counter tops.
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Cruz Castaneda
Me encantó cómo me atendió alma fue amable y cinpatica yo si recomendaría este lugar de granito
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Juan Fuentes
Quick service and great deals! They explained our options well and took their time with us. Would recommend to others.
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Cindy Salazar
Best customer service!! Thank you Alma and LJStone staff! Alot of options for our kitchen remodel. I highly recommend LJ Stone Inc.
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Cristalina A.
Date: 2024-09-26 19:50:54
I had a great experience at this store. My contractor recommended them & they were able to offer me an amazing deal on all my cabinets for kitchen, bath, flooring, baseboards & countertops. Yvonne was great to work with. She modeled out my kitchen, easy to make changes & she answered my questions quickly! I had a great experience. My home came out beautiful!
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Shmily Z.
Date: 2023-06-13 00:14:05
My new home was in move-in condition. However, I just needed it to be changed to the way I like. I contacted numerous companies and I finally spoke to Nancy at L J Stone. Every question was answered in a knowledgeable way and the job was quoted and the design completed in a skilled, respectful, and efficient way. I am already planning future projects with her.
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Qianlan G.
Date: 2023-06-05 19:07:41
Nice product, price well and good customer service. Gary went through step by step for our kitchen remodeling. He was prompt, clean, courteous, but mostly, professional. We highly recommend him!!!
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Cherie T.
Date: 2023-02-20 23:26:46
They have beautiful quartz and wonderful customer service. Liza is hands down the best and can help you find the perfect countertop for any decor. I highly recommend them.
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Samantha L.
Date: 2022-03-10 19:38:50
We came in to pick out our vinyl color and Liza assisted us. She was so friendly and didn't rush us at all. Choosing a floor color can be hard and I'm extremely indecisive. Highly recommend this place.
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Granite Planet Installers C.
Date: 2021-10-22 20:15:01
Good service and most of all quality counters. Real quartz that does not scratch unlike other places that sale the not so good quartz. Just finished our installation last night and i have to say that LJstone did not disapoint with final results that we got from our installation using their material white quaryz. Thanks Garry.
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B P.
Date: 2021-01-18 23:10:37
Great service! We purchased our vanity tops and kitchen counter tops. Alma and Gary were very professional, helpful and friendly. Made the process simple and easy. Thank you fir your help!
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Vernon S.
Date: 2021-01-16 18:43:40
I purchase a bathroom counter from this company. We had Alma and the team to help us and they were just wonderful. I would highly recommend this company.
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Jay G.
Date: 2021-01-14 22:14:37
Staff was extremely helpful and responsive and very professional. We are very pleased with the purchase of our countertops and sink!
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Ana S.
Date: 2020-12-17 21:19:17
Alma was very attentive and helpful. I had to come in with my kids and she was very patient. Have us a great price too. Will refer to family and friends.
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Taylor J.
Date: 2020-12-05 19:28:02
We had a fantastic experience here. The selection is beautiful and everyone in the office was very helpful and friendly. Peter helped us and made the experience super efficient and painless! Definitely recommend. Great prices as well.
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Patricia M.
Date: 2020-12-01 19:59:55
I really love the costumer service Yvonne , very helpful, love the store And the variety of stone selections
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Cookie H.
Date: 2017-06-07 00:34:24
I would like to Thank everyone who works at LJSI. You made choosing our kitchen granite a pleasant purchase. A very special Thank you to Carlos. We must have stopped by about 10 times before choosing our granite top. I know my Mother can be stubborn and indecisive, but I just have to say that our home kitchen is coming out beautifully. Carlos speaks fluent Spanish and is pleasant to talk too about all your kitchen concerns. Thank you for all your help!!!
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Sung W.
Date: 2020-12-18 19:03:57
We needed to remodel our master bathroom even if it was only 7 years old. The builder put in not that good ones so we wanted to get better quality cabinets and countertops. After shopping around we found this place in Upland. Although the name doesn't suggest they have cabinets. They do have good selection of cabinets and great selection of countertops( Corian, Marble, Granite, Quartz and more.) The prices are very good and affordable. Cece was the one whom helped us and she was very patient. After you order it takes about a week too hey the cabinets. The countertops they have plenty in stock. I do recommend this place of you looking to get any cabinets and countertops.
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Hervey V.
Date: 2022-10-08 22:09:21
Place looks sketchy, no customer service for walk in customer. Place only really deals with contractors
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Judy a.
Date: 2020-06-25 03:17:19
Came in here to get some granite and backsplash. I felt more like a cattle drive I felt it was so not personable. I left and went somewhere else. Prices are good customer service is OK at best
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Carlos B.
Date: 2021-02-23 03:51:24
Very disappointed. I bought cabinets, quartz countertop, and a farmhouse sink from LJ Stone. Total cost was approximately $8500. The farmhouse sink I was given came defective. As you can see in the pictures, the sink drain hole is uneven and does not allow the kitchen sink basket to sit properly. Since it does not sit properly there's a leak. I've had 3 different plumbers come out to try to stop the leak and no matter what they do (silicone, plumbers putty, etc.) it continues to leak and they all say the same thing, the sink is defective. I contacted Gary from LJ Stone and it seemed like he was going to help me out. He said he was going to contact the manufacturer to give me the information on the correct kitchen basket because he claimed that I probably had the wrong size (note, I had already tried 3 other kitchen baskets from Home Depot and they all sat uneven due to the uneven hole). I decided to give him a chance, who knows, maybe he had the correct kitchen basket for the sink. So far I've gone 2 weeks without any news, I call/text Gary and he claims they are getting back to him "today" (I wonder which today it is). For $8500 that I paid, they need to replace my sink! The company that installed the kitchen GTO Countertops has agreed to install the sink at no cost as long as LJ Stone replaces the sink. This is a very frustrating issue. Sucks to have a leak in your new kitchen when it's all supposed to be new! Do not go with LJ Stone! Horrible customer service.
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Dulia D.
Date: 2020-04-07 20:59:02
They are blocking or deleting this review... I wonder why!??? I have normally purchased material from here for my boss and normally Jennifer was the person that I would deal with since my boss was recommended to work with her. Unfortunately Jennifer doesn't work there anymore and it was always a great experience with her, she was such a nice girl and awesome to work with and she would go out of her way to call me for other materials that I was asking her for before I went to get them she would check for me and call me back all the time. This one last time I had to deal with Cici since Jennifer is t there anymore and it was the worst experience ever she was shorty with her answers she just had such a flat mood (if you know what I mean) she was just blah! After continually being a customer here now I am sure not to go back to this store. There are so many other stores on ninth street and I'm sure they would be happier to take my business. This so called CiCi or whatever her name it is just rude! Never coming here again. I spoke to my boss and told him Jennifer is no longer there. But thank fully my boss has her number and I'm sure wherever she goes we are sure to follow!
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FAQ About L J Stone Inc — Based on Independent Research
What materials can I order a countertop from L J Stone Inc?
What types of spaces does L J Stone Inc fabricate countertops for?
What shapes of kitchen countertops does L J Stone Inc fabricate?
What countertop design styles does L J Stone Inc most often implement in Ontario, CA?
What is the service area of L J Stone Inc?
What types of clients does L J Stone Inc work with?
Does L J Stone Inc have its own countertop fabrication facility?
Does L J Stone Inc offer any discounts on countertop fabrication in Ontario, CA?
What is the price category of L J Stone Inc in Ontario, CA?
Can I get a free consultation and a free estimate for the fabrication and installation of a countertop from L J Stone Inc?
What is the fabrication and installation timeline for a countertop at L J Stone Inc?
How long does it take L J Stone Inc to prepare a quote for countertop fabrication and installation?
Does L J Stone Inc offer cutouts for sinks, cooktops, or other elements?
What guarantees does L J Stone Inc 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 L J Stone Inc. 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.
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1075 W 9th St, Upland, CA 91786