Regarding interior design fees, many people think that it should be cheaper to directly find a renovation master. However, the fee for finding another interior designer is often overlooked. If the master cannot work well together with the interior designer appointed by client, it will lead to a greater chance of delay in the renovation project. It is therefore recommended to find some one-stop companies for design & decoration. A full set of design drawings usually includes 3D renderings, floor plans, ceiling drawings, electrical drawings and construction drawings of the whole house. Interior design fees are usually charged as a percentage of the project cost.