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Transforming Los Santos

Custom maps in FiveM are primarily handled via .ymap files (Placement data). Whether you are adding a new police station interior or placing decorative trees at Legion Square, these files must be “streamed” from the server to the client using a proper resource structure.
Reading TimeDifficultyLast Updated
5 minutesBeginnerJanuary 2026

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1. Creating the Map Resource

You should never place raw .ymap files in your resources root. They must be contained within a dedicated resource folder:
  1. Create a folder named my_custom_maps.
  2. Inside, create a subfolder named stream.
  3. Create a file named fxmanifest.lua in the my_custom_maps root.

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2. The Configuration

Your fxmanifest.lua tells the server that this folder contains map data: 
fx_version 'cerulean'
game 'gta5'

this_is_a_map 'yes'
Place your .ymap files directly into the stream/ folder. You can add as many files as you like to a single resource to keep your server.cfg organized.

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Last Updated: January 2026 | FiveM: Terrain modified.