The Sims 2: FreeTime/cheats

(The Sims 2: FreeTime expansion pack is required for these cheats)

Neighborhood Cheats
This allows you to alter the neighborhood terrain by raising or lowering it. To use this cheat, be in the neighborhood view, then enter the cheat "modifyNeighborhoodTerrain on" (without the quotation marks), and click over the area you would like to change. To select a larger area, click and drag the cursor to highlight the desired area. Press [ or ] to raise or lower the terrain by one click and press \ to level the terrain. When you're finished, type “modifyNeighborhoodTerrain off” in the cheat box (again, without the quotations).
 * modifyNeighborhoodTerrain [on/off]
 * changeLotZoning [residential | community | secrethobbylot] This changes the zoning type of the lot. Before rezoning a lot using this cheat, make sure there are no Sims currently living in the lot. To use this cheat, enter the lot that you would like to rezone, and then enter the cheat, choosing one of these zoning options. Note that although the cheat to change lot zoning into secret hobby lot exists, you must do the proper way to turn it. Otherwise, it won't work or corrupt the game. The method to make a Secret Hobby Lot is discussed here.