# How to place building for them to spawn

**URL:** <https://discourse.cataclysmdda.org/t/how-to-place-building-for-them-to-spawn/10540>\
**Category:** The Lab\
**Created:** [September 17, 2015, 12:15pm UTC](https://discourse.cataclysmdda.org/t/how-to-place-building-for-them-to-spawn/10540 "2015-09-17T12:15:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Noctifer](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.cataclysmdda.org/noctifer/32/458_2.png) [@Noctifer](https://discourse.cataclysmdda.org/u/Noctifer)\
**Post date:** [September 17, 2015, 12:15pm UTC](https://discourse.cataclysmdda.org/t/how-to-place-building-for-them-to-spawn/10540/1 "2015-09-17T12:15:30Z")

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I just made a building using the Balding editor (great tool by the way,easy to use!) to make a building but I have no idea how to incorporated so it will actually spawn. What files do I have to edit for it to spawn? I want to incorporate this into my mod and only have the mapgen json.

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**Author:** ![vache](https://avatars.discourse-cdn.com/v4/letter/v/ea666f/32.png) [@vache](https://discourse.cataclysmdda.org/u/vache)\
**Post date:** [September 17, 2015, 2:07pm UTC](https://discourse.cataclysmdda.org/t/how-to-place-building-for-them-to-spawn/10540/2 "2015-09-17T14:07:08Z")

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If it is a completely new building, you have to make a new overmap\_terrain object. Check out overmap\_terrain.json for details, then make the om\_terrain field in your mapgen file match that overmap\_terrain id, then if you want it to spawn like a shop, there’s a regional settings json that needs to be updated.