A house plan is a set of construction or working drawings (sometimes called blueprints) that define all the construction specifications of a residential house such as the dimensions, materials, layouts, installation methods and techniques.

Drawing set

The principal information provided in a set of blueprint drawings is as follows:

Lines and symbols

House plans use the following lines and symbols to convey the relationship between objects:

Spaces and rooms

House plans generally include the following features, depending on the size and type of house:

Open floor plan

An open floor plan is one which values wide, unenclosed spaces. They are made possible by curtain wall technology, engineered lumber and truss systems, and thoughtful structural design which allow for larger clear-spans than formerly possible in residential construction. An open floor plan limits or excludes walls separating the main living areas of the house (living room, dining room, kitchen) to allow for easier entertaining and interaction between family members.