How to Install Interior Mods in GTA 5 - Custom Buildings Guide 2025

How to Install Interior Mods in GTA 5

Interior mods add explorable building interiors to GTA 5. This guide covers installation of MLO (Map Location Object) interiors and simple unlocked interiors.

Types of Interior Mods

1. Unlocked Interiors

Enable existing but locked interiors in the game

2. MLO Interiors

Completely new custom-built interiors

3. Interior Overhauls

Replace existing interiors with new designs

Requirements

• OpenIV
• Script Hook V (for some)
• Codewalker (for advanced editing)

Installing Unlocked Interiors

1. Download Open All Interiors or similar mod
2. Install Script Hook V
3. Copy .asi file to GTA 5 root
4. All interiors now accessible

Installing MLO Interiors

Method 1: dlcpacks Installation

1. Download MLO interior mod
2. Open OpenIV
3. Navigate to mods/update/x64/dlcpacks/
4. Create new folder (e.g., mlo_hospital)
5. Copy dlc.rpf inside
6. Add entry to dlclist.xml

Method 2: stream Folder

1. Some MLOs use stream folder
2. Copy contents to mods/update/x64/dlcpacks/yourfolder/dlc.rpf/x64/levels/gta5/_citye/
3. Or follow mod-specific instructions

dlclist.xml Entry

Add before closing tag:

<Item>dlcpacks:/mlo_hospital/</Item>

Entering Custom Interiors

• Some have visible doors - just walk in
• Others need teleport via trainer
• Check mod page for coordinates

Popular MLO Interiors

• Hospital interiors
• Police station interiors
• Custom houses/mansions
• Club interiors
• Office buildings
• Prison interiors

Troubleshooting

Interior not appearing:

• Check dlclist.xml entry
• Verify file paths
• Check for loading errors in console

Falling through floor:

• Collision files missing
• Re-download mod

Game crash near interior:

• Corrupted files
• Incompatible with other mods

Conclusion

Interior mods add exploration depth to GTA 5. Start with simple unlocked interiors before trying complex MLOs!