Artisan Breads & Sourdough
Hand-shaped sourdough, baguettes, and country loaves baked fresh daily — the foundation of the bakery since 1923.
Santa Rosa, CA · Est. 1923
Old-World Baking Since 1923
A century-old Sonoma County bakery crafting artisan sourdough, French pastry, and cafe fare.
- Serving since 1923
- 4.4★ from 969 reviews
- Family-run Sonoma County bakery since 1923
On the menu
What we bake
Pastry & Viennoiserie
Croissants, morning pastries, and French patisserie made from scratch each morning.
Cafe Breakfast & Lunch
A sit-down cafe menu of breakfast plates, sandwiches, salads, and WOLF coffee.
Custom Cakes
Wedding and special-occasion cakes designed and decorated to order.
Catering & Private Events
Full-service catering and private-event dining for gatherings across Sonoma County.
Our story
About Costeaux French Bakery
Costeaux French Bakery has been part of Sonoma County life since 1923, growing from a small Healdsburg bakery into a beloved institution known for hand-crafted sourdough, French breads, and pastry. Today the Seppi family carries that century-old tradition forward across the flagship Healdsburg bakery and cafe and a Santa Rosa location.
Beyond the bread case, Costeaux is a full cafe serving breakfast and lunch, a pastry and cake kitchen for weddings and celebrations, and a catering team for private events — all built on the same old-world craft the bakery was founded on.
- Family-run Sonoma County bakery since 1923
- Award-winning sourdough and French pastry
- Cafe, catering, and special-occasion cakes
- 103+ Years in business
- 4.4★ 969 reviews
- 5 Services offered
- $$ Fairly priced
A closer look
Inside Costeaux French Bakery
