A governor in your colony guarantees that all the daily administrative tasks are done properly and lowers the level of corruption in your colony.
The Governor's Residence costs as much as the Palace and does not require Bureaucracy nor Governor - you can build it on a normal building ground (with a red flag on it) in your colonies - but it does require Expansion as it is needed to be built in your colonies in order to control corruption.
The Governor's Residence can also be upgraded to a Palace if you ever want to move your capital. However, if you change your capital by converting a Governor's Residence to a Palace, the Palace in your original Capital will be completely destroyed and you will then have to build and expand a Governor's Residence as a replacement for the Palace to remove the corruption that will be there.
You cannot shorten the build time of the Governor's Residence.
Research and Reduction Building bonuses are shown in the following charts by mousing-over over the research abbreviations (P – G – SL – MR) in the chart.
You can mouse-over the letters in the "Minimum " column to see how many Warehouses are needed for that level.
You can also mouse-over the numbers in the "Build " column to get the longer version of what the numbers/Letters represent.
These reductions are separate and in addition to the researches, for up to an additional 50% reduction. providing a minimum of 64% reduction in resources.
An Architect's Office reduces requirements by 1% for every level built. (up to 50%)
A Carpenter reduces requirements by 1% for every level built. (up to 50%)
A Firework Test Area reduces requirements by 1% for every level built. (up to 50%)
An Optician reduces requirements by 1% for every level built. (up to 50%)
A Wine Press reduces requirements by 1% for every level built. (up to 50%)
These increases are separate and in addition to the production buildings, for 7 day increments, making the maximum possible increase in production 172%.