With a design project! In our Company, a design project is a document that is an integral part of the Contract.
You need to start with the project, because only on the basis of a properly executed design project, you can calculate an accurate estimate for the work, the cost of all materials, and calculate the timing of the repair itself.
For example, we have a ready-made estimate sent to the Customer and if something is not suitable for the cost, we coordinate it and find a more optimal option without compromising quality.
Also, a design project in our Company is also a document according to which the Customer accepts the finished work from the Company, that is, the repair itself. Well, the design project itself is implemented exclusively according to your wishes and requirements.