I'm a small contractor who's uses Westend as a primary source for FRP supplies. These guys are…read moreawesome! They work hard to develop great relationships and do good business. Honestly I'm impressed by there professionalism for such a small shop ! Bottom line, good people!

Maybe i'm old school, or they get huge orders on a regular basis, but we went in on a Thursday and…read moreplaced a $2711 stone order, they said it would be ready to pick up on friday. Called friday, "is our rock ready?" and they said "we don't know anything about your order. the guy that took it isn't in today". Called Monday. "we don't know anything. that guy isn't in it'll be here tomorrow" Call Tuesday "it's in" only to find that it was the wrong order. By this time i have zero faith in their system and i've got a contractor waiting for this stone, i was forced to drive to Fontana to the manufacturer yard taking time out of my day, thank god i have a truck. They mean well, but i feel like it's just another desert company barely doing enough to get by. Or maybe they have people doing $10,000 orders multiple times a day and my order is nothing.

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

Ontario Building Materials is very knowledgeable and helpful and has all the hardscape you need to…read moremake 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!

Great place! First time there and Penelope went above and beyond to get me what I needed, I would…read moregive 6 stars if I could!

They were helpful. When they didn't have the part I needed, they helped me find another place that…read moredid. It was quick and friendly. As someone who doesn't know what I'm doing, I also appreciated the patience and the guidance. Shout out to the woman who helped me, I think her name was Maya.

Wholesale & Retail to suit your needs. Contractors,…read moreLandscapers, and Designers need to have this IE supplier on their radar! Fountains galore and displayed beautifully! Many yard decor pieces as well as landscaping rocks & stones to build your perfect outdoor spaces.

Repeat customers of Thompson's. The workers there are…read morealways ready to assist, answer questions, give quotes and offer alternatives. We've had the deliver service and they are punctual and careful with drop off. We have pitched a fountain, pavers and tile form the location and will likely be back

Great place to find items that aren't carried at HD or Lowe's. I needed a bracket to hold a water…read moreheater expansion tank, and HD carries them online, but you have to buy 15 (!) of them to get one, making them useless for obtaining one. I called PWO, thinking there's no way they'll have this item, and what do you know? They not only had it in stock for a good price (not as low as online shops, but decent) but they even had two different sizes of this bracket that can hold the larger or smaller expansion tanks. When you enter through the front door, you have to turn left down a hallway and open a door to get to the sales area. There's a counter in the back of the warehouse where they will help you right away. Staff is very friendly and helpful. The only reason I gave the four stars instead of five is the price wasn't what I would consider a "wholesale outlet" price, but it was still reasonable, considering you get the item right away and don't have to order it online from somewhere back east and wait for it to be shipped. Note that for some reason the Google map shown above here on Yelp is incorrect. The address is correct (on Monroe Ct) but it shows the location being off Hellman Ave, near the Rancho DMV office. It's nowhere near there, it's actually located just off Haven Ave and the next street south of Arrow Rte. I'm glad I looked up the map directly on Google before driving there! I highly recommend them for all your plumbing needs, since they seem to carry everything. Unfortunately, they aren't open at all on Sunday or late on Saturday, they close at 1PM. Make sure you pick up what you need during the week to get your job done on the weekend!

Looking for special plumbing fitting at the place was no different than going to Lowes and Homedepo…read more. Save you time and effort.

Five Stars does not even do this business justice. We have been doing business with this company…read morefor years. Adriana goes above and beyond to ensure we are always taken care of. As well as making sure our team and our customers are knowledgeable about products. She makes every process as smooth as possible. Insuring we don't waste our time in the process of ordering and picking up. The genuine energy (no pun intended) never changes. When walking in you are instantly greeted in a kind, respectable manner. You can't help but feel like you're in the right place. Besides it helps when the place is being run by two of the sweetest people. Genuine materials has some of the best quality we have worked with. In our ten years of purchasing, manufacturing and installing we have yet to experience any complications. Lastly, I want to give a shout out to the warehouse guys that go above and beyond as well. If something doesn't fit, they'll break pieces to fit, in your Honda fit. That's just the type of service that that you pay top dollar for. Everyone is treated with the upmost respect and care. Kitchen, Bathroom, Outdoor bar, you name it. Genuine has not only quality but a service that you genuinely cant put a price to. ~JMJ Remodeling Experts

I'm having my kitchen renovated after over 20 years. I chose a quartz countertop based on a small…read moresample square. When it came in, it was not what I expected. My contractor called and Genuinely Materials allowed me to come in and see their full slabs. Jenny was at the front desk and was very kind and extremely helpful! Thank you, Jenny, for direct me to the perfect quartz countertop!

Everyone in the office and warehouse are so professional friendly and informative. I am a regular…read morecustomer but always treated with respect and like family!

Your prices are ridiculous they charge me $760 for three pieces of 1"1/4 white oak 12" wide, 9,10…read moreft long I will contact the California consumer service to see if they charge me right

What can I say about Resource Building Materials located in Chino Hills! I fell in love with a…read morephoto on the internet of a stone fireplace. I had no name or anything to help me find where I can locate the stone. Somehow I managed to locate the distributor of the stone who connected me with Dave Cruz with Resource Building Materials. Dave was exceptional in helping me with the transaction. He went above and beyond to make sure I got exactly the stone I was looking for. His warm personality on the telephone made everything so easy. Being the girl that I am I know nothing about construction and Dave answered many of my questions. DAVE CRUZ! YOU ARE THE MAN! Never hesitate when thinking about the best stones along with the best service!!!! Thank you again Dave Cruz for everything!!!!!!!! I will always be utilizing you guys for future remodels in our home

10+ Years of Loyalty Dismissed Over Poor Customer Service and Lack of Integrity…read more I've been a consistent customer of Resource Building Materials for over 10 years, frequently purchasing materials for both residential and commercial projects. Unfortunately, my most recent experience was deeply disappointing and has made me reconsider ever doing business with them again. On June 4, 2025, I purchased epoxy/resin products totaling $1,821.00 for a paver protection project at my home. These products turned out to be incorrect for the job, a mistake made by the contractor I hired. Wanting to resolve the issue properly, I attempted to return the unused and sealed materials on July 1, 2025--only 27 days after purchase, well within a commonly accepted 30-day return window. I spoke with Alexis, and later her manager Diego, who both demonstrated a stunning lack of professionalism. Initially, I was told flat-out that no refunds are allowed, which was surprising considering my long-standing relationship with the company. I calmly asked them to review the disclosures printed on the bottom of the receipt, which clearly state that returns are subject to a 25% restocking fee--not a total denial of return. Once I presented the facts, they pivoted and claimed the return was being denied because the purchase was made "over 30 days ago"--again, not true. I challenged them using the original purchase date and receipt, proving that only 27 days had passed. At that point, their excuse changed again: Diego questioned how they could know if the product hadn't been left outside in the sun. I found this completely unacceptable and insulting. For the record, the product has been sitting untouched in my garage, easily visible, stacked in sealed 5-gallon aluminum buckets. I immediately recognized them as unused materials and attempted to return them before any legitimate window would expire. This felt like an intentional effort to avoid issuing a refund or store credit--completely dismissing my long history of business with them. Rather than owning up to a poorly handled situation, they chose to pass blame, make false assumptions, and contradict their own return policy. There was no accountability, no willingness to resolve the issue fairly, and no appreciation for a customer who's spent tens of thousands of dollars over the years. And for the record, I do not like to leave bad reviews whatsoever. In fact, you can check my Yelp account--I don't leave bad reviews at all. It takes a lot to push me to this point, and for me to take the time to write this, you have to piss me off at least 10 times more than normal. That's how bad it was dealing with Diego and Alexis at Resource Building Materials. To say I'm disappointed is an understatement. This is not how you treat a loyal client. If this is the new standard of customer service at Resource Building Materials, I can no longer recommend them--and will be taking my business elsewhere moving forward.

Store Manager, Jonathan, is the best!! He bends over backwards to make the client happy…read more Maintains great communication and has wonderful follow up. He really cares about providing outstanding customer service. Thank you Jonathan

Contractors' Warehouse has many home construction products available. I came for bathroom lights,…read moremirrors, and towel racks. They have diverse options that are nicely labeled on the display and inventory section. The prices for some items are better than Home Depot. However, prices for cabinets and counter tops are more competitive elsewhere. Most stores nowadays only carry modern options, and here they carry the not-as-trending models too. Brand wise, other stores carry more options. For example, I didn't see Pfister or Kohler facets. Although the aisles are nicely labeled, it was hard finding my way around to the sections I needed without asking. Even then, not all employees knew exactly which section had the items and would give a range instead. I recommend monitoring cashier behavior. My cashier gave the impression of lacking respect for customers. She kept talking about food and lunch orders with the coworkers, looking at her nails, ignoring me as I waited at check out. It was not until I asked a third time if I could check out that I was acknowledged. Additionally, I was the only customer at checkout... I hope to see the checkout experienced improved for the future.