Continue to push for sub-metering if you can - it really shouldn't be hard for your building owner or facilities manager to implement.
And on your own account, if you've got access to the main junction box, you should be able to install a clip-on electricity monitor and remote meter. In the Efergy example shown below, the three clips go one on each phase. That's a domestic model, but there are commercial versions too. The thing is, the clips have to go around the live cable - they won't work if they're clipped around a cable carrying more than one wires. If you've got access to such cables, then you don't need to cut them - the clips just open and clip around the insulation, and don't damage the cable in any way.
There are monitors in development that will go around cables carrying live & neutral, or 3-phase & neutral, using a dense cluster of tiny magnets radially arranged. But the last I checked, they weren't on the market yet.
That takes care of the electricity. I think monitoring heat / cooling will be harder: there are noninvasive ways to measure temperature and flow, but I haven't yet seen them integrated into a heat meter.