The main cities are the following: Keelauchani, Oriyur.
About gas stations, 1 possibilities exist (like "Hindustan Petroleum").
For hospitals you have 3 places with "Pandukudi Hospital", "St.Joesph's Hospital", "Thiruvegampet Government Hospital" for example.
Are you looking for an apartment for sale/rent? Or interested by a house? You can check that on MagicBricks.