Yes, in most cases. While great instructions are the surest way to a great product, we do our best to provide an estimate with the information we have available. Our project managers are trained in scoping and planning projects, and a good Konsus project manager has done tens, and perhaps hundreds of projects, so we will help you figuring out the details.
If further details come to light later in the process that affects the amount of work either way, we adjust the quoted number of hours in collaboration with our customers. This is most common in complex projects with little initial planning, and our customers understand of this dynamic.