Are you planning to build a new bathroom or remodel your existing one? Knowing the average cost can help you budget and make informed decisions. The average cost to build a bathroom can vary depending on several factors. These factors include the size of the bathroom, the materials used, and the labor expenses. On average, the cost to build a bathroom can range from $5,000 to $30,000. Larger bathrooms or high-end materials can increase the cost significantly. It’s essential to plan your budget accordingly and consider hiring professionals for the construction or renovation project.