Enjoyed a wonderful new Horchata Frappuccino and a slice of Strawberry Matcha Loaf. The drive thru barista/server was friendly and efficient. Overall great flavor of the food and drink and 10/10 service! read more

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This is probably one of the friendliest Starbucks we've been to. Everyone was so nice and welcoming. From the person who took our order to the one handing us our drinks, everyone just seemed genuinely happy. We've had good service at lots of Starbucks, but the positive energy here really stood out. read more

Happy Friday! My Barista is better than yours She always prepares my 6:00am Americano the best. read more

Starbucks - Coffee & Tea Near Me - Diamond Bar, California

This is probably the best Starbucks I've ever been to. I've been to them in several states and internationally. I go frequently to this one. They're very quick on the drink preparation and always polite and friendly. read more

This is such a convenient location with a nice drive thru behind the building. I ordered a black iced tea minus water and ice, so I can enjoy the tea's flavor without diluting the cup. The staff are total trained to be courteous and cordial at the store, which is so important in this World. read more

Aww they charged money now just to get ice water cuz my kid was thirsty after summer school in the heat, how times have changed, they haggling $ just for ice water, awesome job :) read more

5/5 Perfect Spot Warm hospitality beats everything else Visited on a Saturday around 2 PM and was greeted by the sweetest Filipino cashier whose name I, unfortunately, forgot--but their kindness left a lasting impression. We ordered a black coffee with hazelnut and tried the new summer berry refresher. While the drinks themselves were just average in taste, the real standout was the service. The cashier's friendliness felt genuine, not forced, and created a naturally welcoming vibe that made the whole experience feel special. It's places like this that remind you--it's not always about the product, but the people behind the counter that keep you coming back. read more

Starbucks - Coffee & Tea Near Me - Diamond Bar, California

This location consistently puts in my order wrong. It's like they only hear the last words you say. If I ask for an iced chai drink they make it hot one, a mango strawberry energy they make a strawberry açaí. Everything they make still tastes ok, but it's not ever what I ordered and they never verify my order before putting it in. If I weren't working in the area right now with limited options I would never go to this location again. Friendly people but wrong order 5/5 times coming. read more

Quick and easy coffee fix. Be warn , long lines but it moves. This locate is LOUD. And this is the only Starbucks that does have any availability for consumers to charge our phones. This location doesn't want anyone to linger, just get your coffee and leave. read more

Very pleasant and helpful staff. There was confusion about our drink order because we ordered something custom, and the young lady behind the counter was so pleasant and fixed the situation immediately. The young man that took our order was also very friendly and helpful. We had a really good experience at this Starbucks overall. Really good customer service and the drinks were very good. read more

My pumpkin cream chai is literally milk. I love paying $7 for my drink to be made incorrectly. read more

Starbucks - Coffee & Tea Near Me - Diamond Bar, California

Very clean and well organized location. Service was very good and employees are very friendly and efficient. My dragon fruit refresher was perfect Ann's my butter croissant was very tasty and fresh This was a positive visit and experience read more

Starbucks - Coffee & Tea Near Me - Diamond Bar, California

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So excited they have sugar free caramel again! My drink is usually good from this location.

Love coming to this Starbucks! The employees are so lovely & they know my order my heart (lol)!!!

Went to the drive thru and ordered a Caramel Ribbon Crunch Frappe and when I drove up to the window the barista seems to be confused about the order and put the wrong label on the drink and laughed about it. Overall vibe was okay. read more

I loved Adilene! She was such a sweet and kind soul and helped me figure out what I wanted to order! She really made my day after my visit here. It's baristas like her that give Starbucks such a good rep. read more

I usually enjoy my visits to this Starbucks location, but unfortunately, today's experience was disappointing. I ordered two green tea lattes, but when I got home, I discovered they forgot to add milk--essentially leaving me with green tea and no "latte." This may seem like a small oversight, but it completely changed the drink's taste and quality. I expect better attention to detail, especially from a brand like Starbucks. I hope the team can double-check orders in the future to avoid situations like this. A latte without milk isn't really a latte! read more

I had an odd experience here. Basically, I ordered, confirmed my order on the screen, pulled up to the window and my drink was missing cold foam. I said "oh that one is supposed to have cold foam." The barista named Leah said "well I have to charge you for it." I said "um okay...but didn't I already pay for it?" Because it showed on the screen already. She said "no you didn't...I deleted it." I asked why she deleted it since I had confirmed my order, her response was "well more than one person was taking your order so there was a miscommunication and I deleted it." The customer service was definitely lacking...she was not apologetic and almost made it seem like I had made a mistake when ordering. You would think there would be an apology but instead she was just rude about it. read more

Yelp says they close at 9. Came here at 8:36 and the door is locked. So is Yelp to blame or the workers who want to lock the door earlier? Hmmmmm read more

The worst service at this location and this is not just one experience. First time we ordered online and went to pick up and they locked the front door saying they had an issue with plumbing. Couldn't make our drinks. Second bad experience, I stopped in doors locked, no signage on drive thru, door, window or anything but we can see people inside but straight up ignoring. Like at least put a sign up and not ignore everyone at the door of pulling up to drive thru. It's tacky and poorly run. read more

This Starbucks is located in the Diamond Hills Plaza Shopping Center with the main entrance at Sugarpine Pl off of Diamond Bar Blvd. The shopping center is lower than the main road so not all of the stores are visible from the street. They have a drive thru lane, but I normally opt for parking my car and getting my food and drink inside. The staff are usually efficient, friendly, and will welcome you when you enter. It's really convenient to order ahead on their mobile app. More often than not, my order is ready when I get there. My normal order is their bacon, sausage & egg wrap and a Caffé Americano. The quality is on par for any Starbucks that I've visited. read more

Starbucks - Bacon, sausage & egg wrap, grande Caffé Americano - Coffee & Tea Near Me - Diamond Bar, California

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Drink quality sucks, orders the frozen energy drink and they originally handed my the wrong drink, they took it back and looks like they added some the syrup n blended, but very shitty. There is no slush to the drink just blended ice and fully liquid and it's all foam 1/4 top cup Horrible product service, read more

Starbucks - Coffee & Tea Near Me - Diamond Bar, California

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1st thing 1st, we're regular customers, so we know and are familiar with the taste of the drinks we order. At first, we thought they just forgot something or didn't put sugar, so we went back for them to fix it. But when we tasted it again, it was still the same. We usually order caramel frappe, and this was the worst Starbucks caramel frappe we've ever had. It tasted flat and tasteless. no sweetness at all! You could only taste the cream and ice, that's it. But again, we know exactly what it should taste like. SMH. read more

Been here twice already and satisfied with my experiences! I have only ordered via mobile app and the drinks come out QUICK. The app is accurate--within 4-7 minutes! Today I ordered a Venti Strawberry Acai Refresher with light ice and it was DELICIOUS. I am currently obsessed with their refreshers. Only -1 star because the previous time I ordered I wanted soy milk in my latte, but this store was out so I had to sub oat milk instead. They were still out of soy milk when I wanted to order an iced latte today but that's okay--I ordered this delicious refresher instead! I am an iced vanilla soy latte fanatic so that made me a little bummed, but the drink with oat milk was still OK. I have yet to order in person or through their drive through. But I am satisfied with the mobile experience! Thank you staff for what you do!! I plan to keep coming back and ordering via the mobile app again and again when I'm in the area (: read more

Starbucks - Venti Strawberry Acai Refresher with light ice - DELICIOUS! - Coffee & Tea Near Me - Diamond Bar, California

Awful I would give this zero stars if I could . They denied the free Super Bowl drink even though it literally said it on my app. Why have promotions since they don't even honor it . Avoid avoid avoid . Poor service . Awful location to read more

This is a good Starbucks location. They make good drinks and are consistent. I've definitely been to Starbucks locations where I cannot say the same. Mostly they have really good customer service, although I've been sassed a few times for asking for cinnamon at the pick up bar, post-order. A little rude considering I just paid $6 for a drink! Overall this is a great location you can count on to make your drink right. read more

7/15/25 Tues approx 1240pm. Fat girl with glasses-very rude . I brought my own Cup 12oz medium size. I asked to Fill Cup full - black coffee. Was charged for a Medium Size Coffee , but only received a Small (1/2 cup) of coffee. - i was too busy to go back to get it corrected & complain about the Lack of Customer Svce - the Worst !!! Absolutely NO CLASS . read more

I've visited this Starbucks location twice at nights - well three if you count the time I arrived minutes til closing and thinking the closed the following hour instead. On my first visit, I ordered an iced hazelnut soy latte, one of my go-tos when I'm not sure what to order. Of all the Starbucks locations that I've tried, I have to admit that they made it best here. There were about 10 other drinks to make, and all the baristas were efficient in making it. On my second visit, I attempted to order the same drink but was unfortunately not able to since their espresso machine wasn't working. Thankfully, the barista suggested that I try it with cold brew instead of espresso. Although it didn't taste the same, it was a worthwhile substitute and visit. On both visits, the staff are friendly, and I would definitely return if I were nearby shopping at H Mart, grabbing dinner in the plaza, or running local errands. read more

I ordered coffee latte at 5:09PM. But wait about 15 minutes. This is my first time coming to this store. The person behind me got their order within 5 minutes. It seems slower service than other stores when ordering coffee latte. read more

The team here provides THE best customer service! I was in the backseat with my son and the barista made the effort to acknowledge him and was SO SWEET!!! This location is always clean and on point! Thank you Starbucks Diamond Bar for always making our day! read more

Just wanted to say this has been one of the best Starbucks I've visited, and trust me I've been to many! Theodore helped me and he was super nice, helpful especially since I asked for a new drink. People like Theodore gives corporate companies like Starbucks feel like a local coffee shop! read more

The Starbucks is outstanding. It's in the middle of a high school suburb area near a busy freeway today. I wanna give a shout out to Melanie. Britney and Henry who showed up because nobody else did and they had a line of 50 people and they kept the store open working their little behind off. Besides the delicious coffee and food they serve. I really wanna give an outstanding shout out to these young people, they are the best. read more

Fast service and they made everything correctly! Perfect coffee and iced latter. Nice area.

This location ALWAYS gets the order right! We ask for 7 scoops of matcha and extra strawberries in our açaí drink and it's never wrong. Most other locations never could do it right.. which I don't get why. Love this location! So friendly and staff are great! Order is always correct! read more

Starbucks - Matcha green tea with 7 scoops and extra strawberries açaí- always does a great job! - Coffee & Tea Near Me - Diamond Bar, California

As you enter drive thru to order, bright cheerful voice greet you and take your order. It was a cloudy & gloomy day ( Sat. Aug 21 3:00pm... ish ) but her Bight friendly voice made it better. Great asset to business:) Don't know her name but was Super Friendly. Make the day gloomy day Brighter read more

Starbucks - Super friendly !!! - Coffee & Tea Near Me - Diamond Bar, California

Best on today's service it is good and fast at the longest drive thru length that I've ever seen. Drive and service very fast without wait. Five star for my Venti Ice Quad Shot Latte. read more

Starbucks - Recommended today for this store! - Coffee & Tea Near Me - Diamond Bar, California

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Staffs are nice but the customers that visit here are messy. Sometimes the bathroom hasn't been clean in days. The same mess is still there. read more

I've going to this location almost every for the past 10 years due to it's location. Man, the service quality and employees attitudes is getting worse each year. Today, Horrible attitude today! read more

As a non-binary person who travels for work, I like to stop at Starbucks to use the restroom because they tend to have gender neutral bathrooms. I always feel safer using a bathroom at a Starbucks. This Starbucks will definitely be on my favorites for a next time passing by. As I entered, I was greeted by the person at bar and someone in the lobby. Good vibes. Thanks ya'll! read more

I won't get into details, but I'll avoid this specific location due to the employee CHARISE. Horrible attitude... hopefully, management provides more training in customer service. Life's short...and no one needs her attitude before they've had their first sip of coffee. read more