Value Engineering on House

I am looking to hire a freelancer to assist me with a value engineering project on a house. The main goal of the project is to reduce costs associated with the building. The scope of the project is the whole building, not just one floor or room. In order to do so, the freelancer will need to provide me with material lists to understand what kind of materials are involved and how much it will cost. It is vital that this information is accurate, as it is crucial for making decisions about what changes should be made to the house. Ultimately, the value engineering project should make the house more budget-friendly while still maintaining its overall quality and safety.