Estimates for home repairs can greatly vary due to several factors. Firstly, the level of expertise and experience of different contractors can influence the cost. Secondly, the materials used can also differ in price, with some contractors using higher quality, and therefore more expensive, materials. Thirdly, the complexity and scale of the project will play a big role in the final estimate. Lastly, some contractors may include additional services in their estimate, which others do not.