After More than a decade in the making, as well as over budget by up to €350 million ($480.8 million) now in present times already too small—these are the problems the European Central Bank is facing now with its brand new skyscraper.

After More than a decade in the making, as well as over budget by up to €350 million ($480.8 million) now in present times already too small—these are the problems the European Central Bank is facing now with its brand new skyscraper. The Eurobank is prepping itself to take over supervision for all euro-zone banks in November next year.

Around the same time, its new 185-meter tall (607 feet) headquarters is slated to be finished. It will be financed by upward of €1.15 billion of public money, this is up from an earlier estimate of €850 million thanks to rising construction costs and other challenges the ECB acknowledged in 2012. But all that time and money won’t change that fact that the new building will only have enough room for the classic monetary policy folks.

The 1,000 new banking regulators and support staff the ECB plans to hire to support its new mission as top bank cop will have to look elsewhere for a place to work. For the ECB the mix-up is simple to explain. “In the planning phases of the new headquarters, which started in 2001, we couldn’t have predicted that the ECB would have to build a major institution with 1,000 new workers from scratch and fulfill this new function as banking supervisor,” a spokeswoman for the ECB told The Wall Street Journal. She added that over the long term there is potential to build additional work space on the grounds where the new skyscraper is being built, but that there are no current plans to do that at this time.