Feel free to contact us if you have questions on specific height figures or rankings published by us.
To speak to us personally, please call: +1-312-451-7577
Monday - Friday 10am to 6pm
If you would like to submit updates to already listed buildings or buildings
which are missing, please send an email to us including
- your contact details
- figures confirming your updates
- attachments such as PDF files
Please also provide a phone number in case our staff might want to call you back.