If some info is missing for the individual building articles you can update them using the info found at these forum posts:
- http://forum.sphinxjoy.com/viewtopic.php?f=4&t=518#p647
- http://forum.sphinxjoy.com/viewtopic.php?f=8&t=809#p1616
Please be careful when using infos from these links as the corresponding first posts are over 1 and 1/2 years old and might be outdated due to updates in that entire time.
Maximum level of each building(at planet):
Metal Mine Lv.34
Crystal Mine Lv.34
Gas Plant Lv.34
Solar Plant Lv.35
Fusion Reactor Lv.21
Metal Storage Lv.17
Crystal Storage Lv.17
Gas Tanks Lv.17
Underground Bunker Lv.15
Research Lab Lv.23
Robotics Factory Lv.23
Shipyard Lv.23
Nanite Factory Lv.3
Radar Station Lv.20
Alliance Depot Lv.4
The above list is from 28th May, 2014 and might not be accurate anymore either.
Maximum level of each building(at satellite ):
Satellite Lv.15
Quartz Rutilated Refinery Lv.25
Space Jumpgate Lv.10
The above list is from 15th November, 2014