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October 31, 2025: Application Deadline for CountertopsContractors.com National Ranking (2025-2026)

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Pomona, CA City Rating: We have identified this city as the primary city for this contractor.

J K STONE INC

since 1992

Examples of works performed by J K STONE INC

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About J K STONE INC — Ranked №1 Countertop Fabricator and Installer in Pomona, CA

70.87

total score

The main rating value calculated from more than 30 indicators.
Exact value: 70.866816 out of 100.

According to The First National Ranking of Stone Countertop Fabricators and Installers in the U.S.

J K STONE INC, founded in 1992, ranked number 1 in Pomona, CA in the U.S. company ranking by Countertops Contractors Ranking — the first national independent ranking of stone countertop manufacturers and installers.

We included J K 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.

J K STONE INC: Total Score & Key Ratings

The Total Score of 70.87 out of 100 achieved by J K 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 — J K STONE INC has a rating of 4.1 out of 5 — and our team’s Mystery Shopper Score, which stands at 4.03 out of 5.

You can read detailed information and evaluations from our independent research of J K 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 J K 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 J K STONE INC

They work with clients' tight schedules and strict budgets. Eco-friendly countertops and methods are parts of their commitment to the people and the environment. As general contractors, they have been praised for the adaptability to fulfill any countertop requirements. The countertop company has run the same family for four generations. So, they follow the traditional business principles like honesty, reliability, flexibility and fair pricing. The firm's staff has received extensive training and can reliably deliver the best countertop services in the Pomona area.

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.

More info

Mystery Shopper Report

4

The mystery shopper rating is calculated as a weighted average of the indicators, which you can find out about below. Exact value: 4.03044 out of 5.
criteria: 10

Staff friendliness

3

Good

Staff Expertise

4

Very Good

Company Age

5

Legacy

Own Office

5

Has Office

Own Production

5

Has Prod

Veterans Discount

1

None

Production time

5

Very Fast

Deposit Level

3

Standard

Quote Time

2.5

Average

Affordability

4.5

Low

Company services

Kitchen

service-kitchen To order

Bathroom

service-bathroom To order

Outdoors

service-outdoors To order

Commercial

service-commercial To order

Fireplaces

service-fireplaces To order

Sill rail

service-sill_rail To order

Additional benefits of J K STONE INC

Wheelchair accessible entrance

Wheelchair accessible parking lot

Granite supplier

Bathroom remodeler

Cabinet store

Kitchen remodeler

Reviews about J K STONE INC

All (8)

Google (8)

Source: icon-google Google
avatar

Yannie Yeung

Date: 2023-06-15 16:07:59

Yup. JerK Stone Inc indeed. Very rude! I went there to shop for counter top for my own house. I walked around the shop admiring the beauty of the Marble I saw. This middle aged woman yelled at us impatiently, "Hey! What do you want?" We explained that we are just checking the Marble out then she gave us a really mean look. I guess she thinks we are not potential customers that's why. We got out immediately after the unpleasant interaction. But the clearance section outside drew my attention. I went to section to check it out . Wow! and that woman just sent a guy over and closed the gate of the clearance section off us. I mean really? What's wrong with her!

Source: icon-google Google
avatar

Tim Lawler

Date: 2021-11-30 04:07:07

We decided to use JK stone because we had seen a couple of jobs they had completed a couple of years ago. What a mistake! The installers left the seams so badly aligned that when we slid a penny across the counter, it literally bounced of the countertop when it hit it. They left without even cleaning the granite. We finally got the installers back out to look at the job, 3 weeks later, they were only able to clean and polish the granite. Which did nothing for the problems with the seams. When we spoke to Jenny, the owner, she couldn't be bothered to see what her installers did. Instead she tried to buy me off for $100 on a $5,000 job. Unfortunately, she had to have the money in advance to schedule the work and secure the granite. I am disappointed that they feel they don't need to do quality work, just cash the check. I would tell people to use anyone else

Source: icon-google Google
avatar

di wilds

Date: 2023-03-21 05:56:58

Had a simple pantry installed for extra storage. Great work and the quotes were much more reasonable than other competitors. This is our 2nd time w JK stone as we did our kitchen 4 yrs ago. Reliable company and workers. Thank u for your help.

Source: icon-google Google
avatar

Roy Cardenas

Date: 2022-08-05 02:34:04

Wonderful, wonderful, wonderful... Would highly recommend JK Stone! Jenny and John are easy to work with.

Source: icon-google Google
avatar

Myra Ramirez

Date: 2017-03-30 14:39:59

Juan was great worker !! the owner Jenny gave too many Quotes. I was not happy :( . make sure you get in writing first ,sink cut out /cook top cut out. other quotes give fabrication sink cut included in their quotes she did it separate.

Source: icon-google Google
avatar

Jessica Sandoval

Date: 2020-08-28 18:53:25

Excellent work .. they were great help ..

Source: icon-google Google
avatar

Lucia Pedregon

Date: 2019-07-29 17:07:49

Good work, just a lot of mistakes made during the billing. For example forgetting to add features on the bill and then telling me later that it was going to be more because they for got to add the glass door or asking if I wanted a feature at the last minute and telling me it would be more. Nice workers just there were a lot of mistakes on the bill, I paid more than the original invoice.

Source: icon-google Google
avatar

Johnny Ambrocio

Date: 2016-07-03 20:24:13

I have no comments the job is just good

FAQ About J K STONE INC — Based on Independent Research

What materials can I order a countertop from J K STONE INC?

What types of spaces does J K STONE INC fabricate countertops for?

What shapes of kitchen countertops does J K STONE INC fabricate?

What countertop design styles does J K STONE INC most often implement in Pomona, CA?

What is the service area of J K STONE INC?

What types of clients does J K STONE INC work with?

Does J K STONE INC have its own countertop fabrication facility?

Does J K STONE INC offer any discounts on countertop fabrication in Pomona, CA?

What is the price category of J K STONE INC in Pomona, CA?

Can I get a free consultation and a free estimate for the fabrication and installation of a countertop from J K STONE INC?

What is the fabrication and installation timeline for a countertop at J K STONE INC?

How long does it take J K STONE INC to prepare a quote for countertop fabrication and installation?

Does J K STONE INC offer cutouts for sinks, cooktops, or other elements?

What guarantees does J K 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 J K 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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