We first covered Brentwood’s long-planned Costco back when construction was still underway. The wait ended on March 7, 2025, when the massive warehouse officially opened at 5151 Heidorn Ranch Road. On opening day, crowds lined up early, traffic slowed around Lone Tree Way, and Contra Costa County got one of the largest Costco locations in California.
Early Reviews From Shoppers
Months later, the store is holding a 4.6 Google rating with over 300 reviews. Locals praise the clean layout, wide aisles, and plenty of parking. A Reddit thread called the opening “Happy New Costco Day,” with shoppers posting about exclusive launch items that sold out within 20 minutes. On Yelp, visitors highlight lower-than-expected traffic and parking congestion compared to fears before the opening. The gas station has also drawn attention for shorter lines and lower fuel prices than nearby options.
What It Means for Brentwood
This store has become a regional draw, with shoppers from Antioch, Oakley, and beyond choosing Brentwood over longer trips to Concord or Livermore. For the city, it marks a shift from years of anticipation to reality — Costco is here, and it’s busy. Community concerns over traffic remain, but early impressions suggest the impact has been less chaotic than expected. With its location near Highway 4 and the planned eBART station, the Brentwood Costco is already reshaping local shopping patterns.