The city determines a ground lease for 75 years (as it was in the 19th century), or 50 years (the system as it is now) or eternally (as of 2016). Upon land (re)development, the city sets an annual ground lease (set for given timeframe), or determines a lump-sum payment-at-once (as is the discounted sum of annual ground lease over the given timeframe, with a possible discount). After those 75 or 50 years, the city sets a new ground lease according to the then-applicable ground lease system rules. In doing so, it is able to capture the increase in land value and use it to further public investments that benefit residents.