The invention pertains to a method for producing parts for a local structure at a construction site (3) using a building information model, the building information model being stored on a central computing unit (25) and providing data about the construction site (3) and/or a building (30) to be constructed at the construction site (3), the method comprising determining dimensions of parts needed for the construction of the local structure; and producing the needed parts according to the determined dimensions, characterized in that determining the dimensions comprises a measuring operation performed by a user (4), wherein the user is guided through the measuring operation by a portable computing device (45) using data provided by the building information model; the dimensions are provided to a work shop (5) which is situated at the construction site (3); and the needed parts are produced at the work shop (5) according to the provided dimensions.