According to the experience of the architects, houses built in the rainy season will have better construction quality. Structurally, the concrete pouring in the rainy season will have less thermal expansion, causing cracking and easier to see leaks and easier to treat. The rainy season also has the disadvantage that the cost of construction is higher because of the danger, and construction time will be longer because of rain, work is interrupted.

Often basic drawings of grounds and perspectives will take from 5 to 7 working days. The architect or the design unit discusses with the host on this issue. After adjusting many times to get the desired design, the design unit will follow the drawings to draw up a drawing permit application form. Wait until the construction permit, will draw technical details, electricity and structure layout. The completion time will take about 1-3 months, depending on the complexity of the work and the change of the home owner.

Unless the homeowner prepares the full documentation, the current law is as follows:

From the date of receiving the complete and valid dossiers, the competent agencies shall have to examine the dossiers for licensing within the following time limit:

a / For cases of granting of construction permits, including temporary construction permits, adjusted construction permits and relocation permits, the work duration is 20 working days; 15 working days for individual dwelling houses in urban centers; 10 days for rural dwelling houses, from the date of receipt of complete and valid dossiers.

b) For cases of re-granting or extension of construction permits: Within 10 working days.

In case of maturity specified at Points a and b of this Clause but need to be further considered, the construction permit-granting agencies must notify in writing the reasons thereof to the investors and concurrently report them to the competent courts. the direct management shall consider and direct the implementation, but must not exceed 10 working days as from the expiration date specified at Points a and b of this Clause.