The best approach to getting this information is to contact the previous building owner to see if they have the data on file or are willing to write the utility to inquire if it is available to them.
If your organization has recently purchased a building, you can only access data from usage that occurred since you assumed ownership of the utility account. Utilities and third party utility data services will not provide historical energy usage data to the current account holder for privacy reasons.
Your best option is to contact the previous account holder, who may be on the facilities team of the previous building owner. They will need to contact the utility directly to request the site data. Third party utility data services like UtilityAPI are not able to request historical data on your behalf.