From the early stages of design through to the construction stage of a project, the role of a landscape architect involves careful and thorough planning. First they consult with the client, be they local councils, company managers or residents, to understand their needs clearly. They then study the proposed building site, checking for soil type, land stability, prevailing winds, existing buildings and other considerations that are factored into their design. Plans and designs are drawn using computer packages or sketched, using drafting tools. After construction costs are calculated, contractors or construction teams are selected. Once construction gets underway, landscape architects guide the process and provide periodical progress reports to their clients.