The latest version of the LEED template for this credit (v5.0) has a change regarding how the compliance is demonstrated when the projects are outside U.S. Now we have to demonstrate compliance via a local equivalent to the U.S. codes. Regarding the 100-year flood requirement, when we tick the requirement we have to demonstrate compliance using an "equivalent local regulatory agency" or a "professional hydrologist". However, once this requirement only applies to previously undeveloped land I don't know how we can demonstrate compliance if our site is previously developed. In these cases it should be enough that the site is previously developed, don't you agree?