If this list of people was satisfied with someone’s services, then they will probably advise you and a good option for you. Second — evaluate the work that needs to be done in advance. Call up to three or four companies that are engaged in such work.
Invite the company’s specialists to leave for your place or agree on a meeting in the office (any other place), to which the contractor will take his preliminary calculations (project estimates), a table of the deadlines.
