Bangkok's draft city plan (4th revision) is open for a 90-day public comment period and is expected to take effect in 2027. The east-side flood way area drops from about 90,000 rai to about 30,000 rai, and the west-side green-stripe zone (about 40,000 rai) is removed. The new flood-water plan classifies areas as flood-prone every 10, 25 or 100 years and lists 126 canal-improvement and 121 water-retention sites. If you own or rent land or a shop in Bangkok, especially in Bang Kapi, Ram Khamhaeng, Saphan Mai, eastern Bangkok, Lat Phrao, Bueng Thong Lang, Min Buri or Ramkhamhaeng, check the zoning map and file any objection within the 90-day window. Zoning changes affect what you can build and your flood exposure.