What is average overhead and profit for a general contractor?

Average overhead for a general contractor typically ranges from 10% to 20% of project costs, covering expenses like office rent, utilities, and administrative salaries. Profit margins generally fall between 5% and 15%, depending on the project's complexity and market conditions. Together, these figures can lead to a combined overhead and profit margin of around 15% to 35% on total project costs. However, these percentages can vary based on the specific contractor and the region in which they operate.