For electric you can take any address and call BGE and ask for the average usage over the past year.

For the water you can go to the city's website and look up the cost of water for a Home. It will show the most recent costs.

If it's an apartment building that uses a third party to bill the residents, you will have to just ask people who have lived in the building.

All this obviously depends on whoever lives there of course.

Editing due to autocorrect error in spelling of BGE.