How to Install Interior Mods in GTA 5 - Custom Buildings Guide 2026

Interior Mods for GTA 5 — Custom Buildings & MLO Guide 2026

Interior mods (MLOs — Map Location Objects) add fully explorable building interiors to GTA 5. From luxury penthouses to underground bunkers, these mods expand the game world with detailed indoor environments.

Installation for Single Player

1. Download the MLO interior mod package
2. Open OpenIV and enable Edit Mode
3. Navigate to mods/update/x64/dlcpacks/
4. Create a new folder for the MLO (e.g., myinterior)
5. Place the dlc.rpf from the mod into this folder
6. Add the DLC entry to dlclist.xml: <Item>dlcpacks:/myinterior/</Item>
7. Update gameconfig.xml if you have many MLOs installed
8. Launch the game and visit the location

Installation for FiveM

1. Download the FiveM-compatible MLO resource
2. Place the resource folder in your server's resources directory
3. Add ensure resource_name to your server.cfg
4. Restart the server to load the new interior
5. The MLO will automatically replace the default interior at its coordinates

Popular MLO Interiors

• Luxury Penthouse — fully furnished Eclipse Towers apartment with views
• Underground Bunker — military-style operations base
• Custom Police Station — detailed MRPD with cells, offices, locker rooms
• Restaurant Interior — Italian restaurant with kitchen and dining areas
• Hospital — Pillbox Hill Medical Center with ER, wards, and morgue

Troubleshooting

• Interior not loading: check dlclist.xml entry and ensure path is correct
• Floating objects: MLO coordinates mismatch — verify the mod matches your game version
• Collision issues: missing .ybn collision files — ensure all files from the package are installed
• Performance drop: high-poly interiors may reduce FPS — use LOD versions if available