> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/dragonfly-primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ladybug.tools/dragonfly-primer/components/0_create/building_from_solid.md).

# Building from Solid

![](/files/-MihrbdAO-7lnGBdIlGk)

![](/files/-Ma9gM0suyLSqV1qx53E) - [\[source code\]](https://github.com/ladybug-tools/dragonfly-grasshopper/blob/master/dragonfly_grasshopper/src//DF%20Building%20from%20Solid.py)

Create Dragonfly Buildings from solid geometry (closed Rhino polysurfaces).

## Inputs

* **bldg\_geo \[Required]**

  A list of closed Rhino polysurfaces to be converted into Buildings. 
* **floor\_to\_floor \[Required]**

  An array of floor-to-floor height instructions that describe how a building mass should be divided into floors. The array should run from bottom floor to top floor. Each item in the array can be either a single number for the floor-to-floor height or a text string that codes for how many floors of each height should be generated.  For example, inputting "2\@4" will make two floors with a height of 4 units. Simply inputting "@3" will make all floors at 3 units.  Putting in sequential arrays of these text strings will divide up floors accordingly.  For example, the list \["1\@5", "2\@4", "@3"]  will make a ground floor of 5 units, two floors above that at 4 units and all remaining floors at 3 units. 
* **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 \_bldg\_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.