Free three-dimensional home architect software allows users to make digital models and renderings of residential structures through the use of special tools to define the spaces, place walls and doorways and modify the appearance of components. Each version of free software contains different features and hardware requirements, with some options limiting use without purchasing the full version.
Three-dimensional home architecture software utilizes a special graphical engine to render images and shapes to resemble the appearance of a real life model. Though every program has its own unique user interface and structure, most offer a basic set of tools for creating a new project with a custom size, which represents the actual land on which the home is to exist, and options for constructing the home using common components and design options. This may include defining the floor plan of the home, such as designating rooms as bedrooms and bathrooms or dictating the home's outward physical appearance.
In addition to a selection of common architectural presets, such as standard window sizes and roof designs, many programs also offer free drawing tools that allow users to create unique home options. The ability of these tools to transform user input into actual components of the design depends on the rendering power of the software and any licensing restrictions on the free version. Most programs also allow the user to save or export the image to view at a later date.