The cost of hiring a roofer can vary depending on a number of factors. Here are some of the most important factors that can impact the cost of hiring a roofer:

1. Roof size: The size of the roof is one of the most important factors that can impact the cost of hiring a roofer. The larger the roof, the more material and labor will be required to complete the job, which can increase the cost.

2. Roof pitch: The pitch, or slope, of the roof can also impact the cost of hiring a roofer. A steeply sloped roof can be more difficult and dangerous to work on, which can increase the labor costs.

3. Roof material: The type of material used for the roof can also impact the cost of hiring a roofer. Some materials, such as metal or tile, can be more expensive than others, such as asphalt shingles. Additionally, some materials may require more labor to install, which can also impact the cost.

4. Roofing company: The roofing company you choose can also impact the cost of hiring a roofer. Some companies may charge more for their services due to their reputation, experience, or other factors.

5. Labor costs: Labor costs are another important factor that can impact the cost of hiring a roofer. The cost of labor can vary depending on the experience and skill level of the workers, as well as the location of the job.