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SIGNAL Coffee Roasters

4.5 ★★★★★ 223 Google reviews · Coffee shop · Coffee roastery · Cafe

Roasts in-house Espresso roasts in-housefresh pastriesdog-friendlyfriendly baristas

Informal shop featuring coffee sourced from ethical farms, plus teas and baked goods.

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1536 Webster St
Alameda, CA 94501

(510) 217-8739

Directions Website

Hours

Monday 7 AM–4 PM
Tuesday 7 AM–4 PM
Wednesday 7 AM–4 PM
Thursday 7 AM–4 PM
Friday 7 AM–5 PM
Saturday 7 AM–5 PM
Sunday 7 AM–5 PM

Where to find SIGNAL Coffee Roasters

What's in the cup

What SIGNAL Coffee Roasters is pouring and bagging — straight from customers' own reviews, not our guesswork.

Espresso 2 mentions

“Most shops on the island don’t seem to dial in their espresso so americanos end up pretty gross - that is not the case with signal!”

All espresso roasters →

What regulars say again and again

The things that keep coming up across 223 Google reviews — with a reviewer's own words as proof.

🔥 roasts in-house

“Signal roasts its own coffee and offers a nice variety of coffee and tea drinks.”

🥐 fresh pastries 7 mentions

“We were buying their coffee before this location opened its doors, and now we love sitting on the beautiful patio with a pastry and a drink.”

🐶 dog-friendly 2 mentions

“Was also super happy to see some dog treats including ham at the counter.”

😊 friendly baristas 3 mentions

“The staff are very friendly and accommodating.”

What customers say

Signal Coffee is an excellent place for coffee, espresso and snacks. You owe it to yourself to check it out and enjoy the facilities, indoors and out I the back. The staff are very friendly and accommodating. Looking forward to many happy returns...

★★★★★ — Mike, 2022-05

A busy little coffee shop but for good reason. I personally was never even into coffee until a friend introduced me to Signal, and then my eyes were opened to what good coffee tastes like. I think they do a medium roast for their coffees and it’s very smooth, not acidic, good roasted flavor of the beans.

★★★★★ — A.J, 2026-05

I love a good iced americano, and this signal location does them very well! Most shops on the island don’t seem to dial in their espresso so americanos end up pretty gross - that is not the case with signal! They consistently pull great shots, have awesome food choices, and are knowledgeable about the beans they sell.

★★★★★ — Kali, 2026-02

A gem of a cafe on Webster in Alameda. Signal roasts its own coffee and offers a nice variety of coffee and tea drinks. Everything is good and they have a quality selection of light bites too - sweet and savory items, hot and cold. James and everyone else we’ve met there is always so hospitable.

★★★★★ — Evan, 2026-05

Excerpts from public Google reviews. Read all 223 reviews →

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Listing verified July 2026 from public business records and customer reviews. Something out of date? Report a correction. Own this roastery? Claim your listing — it's free.