10/31/2026
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Subterranean Coffee
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Subterranean Coffee Boutique, located on 30th Street, is a cozy spot for coffee and savory sandwiches. They offer a variety of coffee drinks and baked goods, including their signature chocolate banana muffins. The cafe also hosts various events such as a Christmas Kick-off Party and Kid's Holiday Puppet Show. Their customers raved about their delicious cortados and air-conditioning system.
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Address
3764 30th Street
San Diego, CA
92104
Directions to a coffee shop and sandwich shop at 30th Street in San Diego:
- By public transport: Take the bus or trolley to the 30th St Transit Center and walk north on 30th St. The coffee shop and sandwich shop will be on your right.
- By car: Head towards 30th St and park either on the street or at one of the nearby parking lots. The coffee shop and sandwich shop will be on your right.
Directions to a breakfast & brunch restaurant at 30th Street in San Diego:
- By public transport: Take the bus or trolley to the 30th St Transit Center and walk south on 30th St. The restaurant will be on your left.
- By car: Head towards 30th St and park either on the street or at one of the nearby parking lots. The restaurant will be on your left.
Opening Hours
| Monday | 7am - 6pm |
| Tuesday | 7am - 6pm |
| Wednesday | 7am - 6pm |
| Thursday | 7am - 6pm |
| Friday | 7am - 6pm |
| Saturday | 7am - 6pm |
| Sunday | 7am - 6pm |
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What people say
According to a recent review in the San Diego Union-Tribune, Subterranean Coffee Boutique on 30th Street is a "hidden gem" that offers exceptional coffee and "mouthwatering" breakfast sandwiches. The article, published just last month, praised the cozy atmosphere and friendly staff. The reviewer particularly enjoyed the avocado toast and latte they ordered.
On Yelp, a customer who visited two weeks ago gave Subterranean Coffee Boutique five stars, calling it their new favorite coffee shop in the area. Another reviewer from three days ago loved the iced coffee and said they would definitely be returning.
A review from Eater San Diego, also published within the last month, recommended Subterranean Coffee Boutique for its hearty breakfast sandwiches and unique coffee creations. The piece noted that this spot caters to both early birds and late risers with its breakfast served all day.
Furthermore, an article from Thrillist featured Subterranean Coffee Boutique in a list of top San Diego sandwich shops, citing the quality of ingredients and creative options as reasons to visit. This review was published earlier this year.
One TripAdvisor user remarked about their experience at Subterranean Coffee Boutique: “First time here for breakfast - fantastic! Friendly helpfull [sic] staff happy to explain various items on menu - settled on avocado toast with an egg - wow!!! Superb cappuccino too!”
Overall, recent reviews of Subterranean Coffee Boutique highlight its exceptional coffee creations and flavorful breakfast sandwiches as standout offerings. The cozy atmosphere and friendly staff also receive frequent praise from customers.