This is the Split Sides West interior by GTA5 Interiors. Other creators also publish maps for this location, so use the credited project rather than mixing instructions from similarly named releases.
GTA5 Interiors’ original release
Install the FiveM resource
The creator’s FiveM instructions name the folder gta5interiors_splitsides. Place the supplied resource in your server’s resources directory and add start gta5interiors_splitsides to server.cfg. The dlcpacks and dlclist.xml instructions on the same page belong to single-player; do not substitute them for the server setup.
Verify the fixes on your map stack
The release history lists roof and building collision fixes, plus earlier crash, disappearing-character and frame-rate fixes. These are author changelog statements, not a guarantee for every server. Test the roof, walls and second floor, approach from both directions, and reconnect with another player. Compare with other maps at the same location disabled to isolate conflicts.
Source checked on 10 September 2026; the listed release is 1.4. No current-game-build or performance certification is claimed.