[MOD] LockNot. Keep your old buildings in Modern Times.
by DarthPresidente, Tinkerer

What it can do:
. Change the year a modern time building becomes available
. Keep old buildings available after the Modern Times building becomes available.
Old buildings are accessed by holding down the SHIFT button while clicking on the category in the build menu.
. Impose a retrofit cost in the form of a blueprint on the old buildings. This does not affect buildings already built.
. Impose an additional cost on older buildings

All of the above can be easily altered by editing the mod's config section.
The default config does not change the start year for buildings,
allows all the old buildings, imposes a retrofit and build cost of about 25% of the building's original cost.

To Use: Place the file LockNot.lua in your Tropico 4\Game folder. You may need to create the "Game" folder.

Relevant information from your game's log files stored in:
"%appdata%\Tropico 4\logs"

Files:
. Mod File: LockNot.zip: https://tropicomodding.org/download/file.php?id=372
. Alternative file: LockNot-NoAddedCost.zip:
config section changed so there are no retrofit or added cost to old buildings.