Ontario Building Materials is very knowledgeable and helpful and has all the hardscape you need to make a beautiful landscape. Teresa was particularly a valuable resource and helped us find an skilled contractor we used. She also worked with us on pricing in our large format pavers for our pool deck. We're fortunate to have found this gem! read more

Ontario Building Materials, Inc - Belgard Dimensions 12 x 24 Rio - Building Supplies Near Me - Ontario, California

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Worst costumer service I've ever experienced. Grumpy old man yelled at me for parking incorrectly. If he would of gone about in a well mannered way they wouldn't have lost my business. read more

I went to OBM to pick up Flagstone today. Went into the yard picked out the stone . Go to the office and tell the guy what I Want. He tells me to go out and wait by the flag stone. 20 minutes later in 105° I decided to leave when nobody showed up. The guy was a complete jerk. Looks like I'll stay with Southeast construction in Chino, where Bud and Eileen know what Customer service is! read more

Great folks and prices. Excellent experience!!! I purchased several yards of decorative rock. They were experts, kind, and responsive to a person. I will shop here again. read more

After getting several estimates on rocks over the phone OBM was the only place that really took their time to answer all of my questions and have products in stock ready to be delivered and not having to wait for weeks due to the insanely high demand due to the drought. Also, they had the best prices and are open 7 days a week to come in and look at exactly what you want. Very nice rocks, while the ones I chose do come from Arizona I will have to wait two weeks for direct delivery, but the price was about half as elsewhere and the rocks much nicer! Service in store was also fantastic, I felt very well taken care of and am glad I came here! read more

OBM was recommended to us for good quality ground cover rocks for our xeriscaping project in the front of our house. We had looked at other suppliers for the Palm Springs Gold type of rock in the 3/4" size, including Wolfenbargers in Chino and Thompsons in Fontana. OBM appeared to have the correct color and size that we needed. Upon placing about $2.2K worth of orders for the rock, the owner's sister that is in the office told us "In the Palm Springs Gold 3/4", you may notice some sand....don't be concerned, just use a water hose and spray it through when the rock is installed, no big deal." Well, their product is NOT ALL 3/4", as we have discovered, it is probably 20% pea gravel and sand, WHICH CANNOT BE WASHED DOWN WITH WATER. The approx 1600 sq ft @ 2 in in depth of this rock has settled, and I have to now add more of the same rock. I have to screen the rock before putting it in place, and I have taken photos to show the amount of sand and pea gravel that is in this product. I do not know about their other products, but this product is not the quality that they say, considering about 20% is NOT 3/4" rock, but sand and pea gravel. SUGGESTION TO DAVID - SCREEN YOUR PALM SPRINGS GOLD 3/4" SO YOU ARE HONEST ABOUT WHAT YOU ARE SELLING. I have been asked by many neighbors how I liked the rock we have put in, and I had to let them know I would NOT recommend this product. read more

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The owners were very helpful. Very accommodating even though i only came and purchase a couple of rocks for a fountain build.

This was my first experience purchasing a large quantity of landscaping rock. The customer service is excellent, the prices are the lowest that I was able to find, and their delivery us on point with communication and arrival times. This is my new local building material store, thanks for the great service! read more

My husband and I are grateful to have found this place. We have a home remodeling project that includes a paver patio and planter walls. Theresa was extremely helpful and knowledgeable, and not at all pushy. She took the time to walk us through various materials, patterns - all with meticulous detail and description. I thought for certain the prices were going to be high because you usually pay a premium for great service. I was surprised to find out the prices were competitive and reasonable, especially when I compared them to the stone yards in North Hollywood. I highly recommend for anyone looking for friendly expertise and competitive prices. read more

I cannot explain how nice it was talking to people who knew what they were talking about for once. My wife and i have spent the last couple of weeks looking for flagstone we to a xouple other building supply places and they were pretty expensive so we kept looking. I called Ontario Building Meterial and i talked to David- super nice guy! He tells me he has some flagstone on clearence for $225.00 a ton! This is cheap im on my way! We bought 4 tons and they delivered it to my house. I could not have asked for a more perfect buying experience. This family owned business knows how to do business. Super friendly and a pleasure to do business with thank you Ontario building materials. read more

David and Teresa are not only the nicest sales people I have dealt with but so helpful and knowledgeable with materials. They were so patient with my indecisiveness and going back and forth on material and color. Not to mention the prices were less than I anticipated! After ordering over 800 square feet of pavers- materials were delivered within 2 days!!!! They also had recommended a landscaper to do my hardscape. BEST recommendation ever. Not only were his costs very reasonable he actually showed up on schedule and remained on schedule thru the end! I cannot recommend them enough-do yourself a favor and make this your place for outdoor building materials!!!! read more

Great place! Old school customer service, family owned and operated. They bent over backwards getting samples and were super helpful with questions I had with my project. Prices were equivalent to the cheapest I found after going to several places. Will absolutely be back!! read more

My friend got there at 2:54pm and Dave said 'he was closed, so he wouldn't be able to help'. They close at 3:00pm... There should be a sign if you have a cut off time. Also, he was able to help the two other customers except my friend... weird I thought you were closed? Unprofessional service! read more

Great material place. I recommend it to Masonry contactors. There price in stone, gravel, and boulders are the best price around the inland empire read more

Excellent service and Materials at Ontario Building Materials from Teresa and David. Family owned Business!

Horrible customer customer. The receptionist was so rude I can't review the company, because the receptionist is as far as I got. Literally the rudest and most self centered person I've ever spoken with in my 57 years of life. Not to mention there limited stock on hand and they do absolutely nothing to honor our brave soldiers or military,veteran s. Any business that doesn't do jack shit for the veterans or service man in this country does not deserve my business nor the sacrifice I made providing serving y country read more

Been getting my landscaping materials from lowes and homedepot. I've been making a big mistake. So glad I decided to change it up and try a new spot. Came to O.B.M to look for rock and I found exactly what I was looking for. Way better selections here. Good prices, super friendly and extremely helpful. read more

Excellent prices. We found exactly what we were looking for. The employees were friendly and welcoming. We have already recommended this place to our neighbors after they asked where we bought our pavers from. read more

I love that this is a family owned business! We ordered/ had delivered salt and pepper rocks. It was a fair price and was able to be delivered within a week! read more

We recently purchased and installed pavers for a backyard patio. OBM's prices were the best we found. They're customer service was excellent: they answered all our questions and offered many useful tips. They referred us to installers - P&P Hardscapes - who did a tremendous job. The pavers look great! Five stars for everyone! read more

This place is on the ball! They pay attention and handle all correspondence efficiently. Thanks for your help!

I called for just some information today and the gentleman on the phone was extremely helpful! After calling several other business and getting absolutely NO help, I called OBM with my questions and they talked with me for several minutes going over options for what I needed and telling me just who to contact. THANK YOU SO MUCH! I've been looking for a solution for almost a week now. I'll certainly be a customer in the future! read more

WOW! This place is a hidden gem. Visit and you won't be disappointed. Samples of stock are plentiful and prices are great. As this is a family run business, David,Juan,and sister all are extremely knowledgeable, helpful, friendly, patient,and go the extra mile to make sure you are satisfied without ANY high pressure sales. To sum it up, the service is unbelievably great and quite refreshing compared to what was experienced with other suppliers we visited. Thank you OBM,and you have won our business from here on out! read more

Incredible service! Teresa and David we're great. She responded quickly to my quote request and we we're very pleased with the prices. The delivery arrived on time. Everything went perfectly. We are happy customers! read more

We found this gem of a supplier and couldn't be happier. Teresa and David are so easy to work with and are willing to take the time to walk you through the process of correct materials and the continual buyer's indecisions. I highly recommend this company and the even recommended the installer "Pablo" who's team did a fantastic install read more

Excellent customer service (David is great)!!! Great prices and friendly to that inexperienced DIY-person!

I was doing a lot of research and pricing for a specific product from similar businesses in the IE. Thankfully my search took me to OBM! Their price on the item I was researching was much better than the other companies I contacted. Even more impressive is the quality of their customer service. David is so genuinely friendly and helpful. Overall, they offer a great selection and exceptional customer service. I intend to use them from now on! read more

Fast, friendly service. Great prices, very generous scoops, and they're open on Sunday's. I am a returning customer and have never been disappointed. read more