There are a different khmer house styles as following below:
The Rong or Kantaing House (ផ្ទះរោង ឬ ផ្ទះកន្តាំង) The Rong or Kantaing House is scattered all over Cambodia, especially the area along the Mekong River banks where most Chinese settlers were established. ‘Kantaing’ is a Chinese term means ‘Guangdong’, a province of China. Khmer people used to call Chinese from Guangdong as ‘Chen Kantaing’, ‘Chen’ means Chinese. So this house style was brought to Cambodia by Chinese from Guangdong and made some changes to adapt the condition of local climate. Specifically, instead of building a house directly on the ground, they raised the house on with the stills support it. The Kantaing House having a reverse V-shaped roof, a simple long hall with two gables (ho chieng), but without extended awning. Depend on the status of the owners, the Kantaing House has two, three, or four columns along its long axis. The Kantaing House of the wealthier may have more columns.
The Peth House (ផ្ទះប៉ិត) The word ‘peth’ is from the Khmer word ‘banhchheth’ which means ‘oblique’ and refers to the hipped roof. The Peth House is the most popular style choosen by Khmer people since 1950s. The Peth House is identified by the form of the roof which has no gable (ho chieng). It’s built without crossbeams supporting the roof. All the beams (ធ្នឹម) are supported by the main column of the house. Typically, the Peth House has higher walls compare to other style, the ventilation is from the upper part of the walls around the house.
The Khmer House (ផ្ទះខ្មែរ) The Khmer House was reserved for the high ranking officers, the wealthy, or for the monks in the Buddhist monasteries.The Khmer House is characterized by its special roof structure which has two levels and completely separated from each other. The lower level has four slopes similar to the Peth House. The upper level is the reverse V-shaped of Kantaing House with two slopes and two gables on both ends. Through the two gables, the Khmer House having very good ventilation.
The Rong Dol House (ផ្ទះរោងដោល) The Rong Dol House has an extended awning, hob, at the front of the house, leaving the upper part of the roof plain save for a small gable which enough giving the house good ventilation. At the back of the house usually has a vacant allowing for extensions. The front hob of the Rong Dol House protects the entrance to the house from rain and provides a shed for the front veranda which is used as living room. In the ancient time, at night all family members gather together at this front hob of the house for discussing and chatting. On the full moon day, they can sit there to see the moon. The elderly in the house telling folk tales to children.
The Rong Doeung House (ផ្ទះរោងឌឿង) The Rong Doeung House is similar to Rong Dol House. But the Rong Dol House has only one awning serving as the main facade, the Rong Doeung House has two awnings, one at the front and another at the back. It has two gables to provide good ventilation too. One disadvantage of the Rong Doeung House is the possibility of extension is not allowed.