A construction permit for a detached house is issued when the project meets the fundamental requirements concerning planning, safety, and legal documentation. First, the construction must comply with the approved land-use purpose and planning. The project must ensure structural safety, safety for neighboring structures, and compliance with regulations on environmental protection, fire prevention and fighting, and relevant technical infrastructure requirements. Detached houses must also maintain safe distances from sensitive structures such as flammable or hazardous facilities, cultural heritage sites, and important works related to national defense and security. The construction design must be prepared in accordance with legal regulations, and the application dossier must be complete as instructed by the competent authority.

For houses located in urban areas, in addition to the general conditions, the construction must conform to the detailed planning or, where no detailed planning exists, to the applicable urban planning and architectural management regulations. For rural areas, construction must comply with the detailed planning of rural residential points.