According to a government policy to solve living instability and improve low-income earners’ quality of life, the National Housing Authority has been entrusted to construct houses under the project, “Aur-arthorn Project”. More than 400 Aur-arthorn projects have been carried out throughout the country, 29 of which are located in Samut Prakarn. This number is considered the most of all throughout the country. Most of these houses in Samut Prakarn were semi-prefabricated. As a result, it is interesting to study the feasibility of this construction system and the residents’ attitudes. The research studied the semi-prefabricated housing construction with load bearing wall in the Aur-arthorn Project, the inhabitants in terms of physical, social, economic aspects and problems arising from dwelling in such houses. The research was conducted by interviewing those involved in the construction and asking 335 subjects living in 1,845 houses to fill out questionnaires. It was found that this kind of semi-prefabricated housing could be used for a 5-storied house with a fixed design. The time frame for construction was short. It was important to strictly control every step of the construction to ensure quality. The design of the house affected the design of the parts of the house. Each part had to fit perfectly with another part and be waterproof. The weight and size of each part influenced the transportation. After assembling the parts, concrete was poured in the space between the parts to make the surface smooth. This kind of construction shortened the construction period, reduced the waste of construction materials, reduced the pollution at the construction site and required a smaller number of workers than other kinds of construction. However, a lot of seams where two parts meet were seen, damage occurred during transportation and the workers’ wages were high. After being in these houses for 2–3 years, most residents were satisfied with their houses, the house structure, public assistance, public utilities and title to housing. They were also confident that they could live there for a long time but they had to pay more for their house and were further in debt because of other facilities. They had good relationships with their neighbors but they thought the selling price per functional area and the project management was not proper. Most were not sure whether this kind of house was strong because they knew very little about this kind of construction and they preferred the traditional kind of construction. Most knew that their houses were built in this way when they came to the construction site. This indicated that they paid good attention to their houses. The problems were that water could leak and there were cracks. Doors and windows were adjusted without fitting insect screens and iron screens. Moreover, floors and walls were not covered with tiles after the residents had moved in. To deal with leaks and cracks, waterproof material should be used to fill up the space where prefabricated parts were joined. A construction control should follow the specified standards and alternatives such as insect screens, iron screens and tiles should be provided. Also, the prices should be set for any additions. A further study should be conducted after the residents have been living there for 5 years and other types of construction as alternatives for other projects should be assessed.
