KS SB124

Prohibits cities from annexing any tract of land under 20 acres without written consent of the owner, expanding current protections that only cover unplatted agricultural tracts of 21 acres or more

Bars cities from using narrow corridor annexations to access noncontiguous land, removing previous language that allowed such corridors if they had "tangible value and purpose"

Excludes federal, state, and other governmental agency land (except city-owned land) from being considered contiguous to city boundaries for annexation purposes

Expands legal challenges to explicitly include annexations of prohibited narrow corridors, allowing affected landowners and nearby cities (within ½ mile) to file suit within 30 days of annexation ordinance publication

Amends K.S.A. 12-520 and 12-538, taking effect upon publication in the statute book