Phase I The designer interviews the client to establish the goals to be achieved, the time frame and the desired budget within which the project is expected to be achieved. The designer attempts to determine the particular taste preference of the client and to translate this into styles, colors and finishes to be selected or suggested. An estimate of the required design time and/or budget price is roughly estimated for the project. A formal proposal is prepared and a retainer of 30% to 50% of the total design fees is invoiced with the proposal. Design concepts are studied, proposed to the client, and may then be prepared into one set of drawings, scale floor plans, elevations of particular window treatments or custom furnishings suggested, color charts, surface treatment schemes, lighting diagrams, schedules, etc. which are formally presented in Phase II. One alternative to presented concept plans or designs is usually provided, if necessary (further alternatives are billed as extras).