# Building from Footprint

![](https://3405893330-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9gBkJelXEQ5LsYEl7%2Fuploads%2Fgit-blob-86ee8a92fe57547be1babca5b83b91a6d5acddb1%2FBuilding_from_Footprint.png?alt=media)

![](https://3405893330-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9gBkJelXEQ5LsYEl7%2Fuploads%2Fgit-blob-a141bfe27eedf4f3e997169aa0b5cf2afc13d67f%2FBuilding_from_Footprint.png?alt=media) - [\[source code\]](https://github.com/ladybug-tools/dragonfly-grasshopper/blob/master/dragonfly_grasshopper/src/DF%20Building%20from%20Footprint.py)

Create Dragonfly Buildings from footprint geometry (horizontal Rhino surfaces).

### Inputs

* **footprint\_geo \[Required]**

A list of horizontal Rhino surfaces or closed planar curves to be converted into Buildings.

* **floor\_to\_floor \[Required]**

A list of float values with a length equal to the number of stories in each Building. Each value in the list represents the floor\_to\_floor height of the Story starting from the first floor and then moving to the top floor.

* **perim\_offset**

An optional positive number that will be used to offset the perimeter of the footprint to create core/perimeter Rooms. If this value is None or 0, no offset will occur and each floor plate will be represented with a single Room2D.

* **name**

Text to set the base name for the Building, which will also be incorporated into unique Building identifier. This will be combined with the index of each input \_footprint\_geo to yield a unique name for each output Building. If the name is not provided, a random one will be assigned.

* **program**

Text for the program of the Buildings (to be looked up in the ProgramType library) such as that output from the "HB List Programs" component. This can also be a custom ProgramType object. If no program is input here, the Buildings will have a generic office program.

* **constr\_set**

Text for the construction set of the Buildings, which is used to assign all default energy constructions needed to create an energy model. Text should refer to a ConstructionSet within the library such as that output from the "HB List Construction Sets" component. This can also be a custom ConstructionSet object. If nothing is input here, the Buildings will have a generic construction set that is not sensitive to the Buildings's climate or building energy code.

* **conditioned**

Boolean to note whether the Buildings have heating and cooling systems.

* **run \[Required]**

Set to True to run the component and create Dragonfly Buildings.

### Outputs

* **report**

Reports, errors, warnings, etc.

* **buildings**

Dragonfly buildings.