Costco
2400 Monument Blvd
Concord, CA 94520 925-566-4003
Concord, CA 94520 925-566-4003
Ratings
Consumer Ratings for Costco — 1 Ratings
Percent of customers who rated service "superior" for:
Doing service properly on first try
Promptness
Letting you know cost early
Neatness of work
Pleasantness
Advice on service options and costs
Overall quality
Prices
Consumer Comments for Costco
Dec 27, 2025