Housing construction locks are sub-projects or phases of a housing construction project that are closed before the entire project is completed. They can be used to divide the project into smaller, achievable steps and to ensure that the project progresses and is on schedule. Housing construction locks can also help to determine the progress and quality of the project and to identify problems or bottlenecks that need to be resolved before the project can be completed.

For example, a housing construction lock could be the completion of the construction of the foundation, or the finishing of the exterior wall of a building. At the end of each housing construction lock, an evaluation is carried out to determine whether the housing construction lock has been completed according to the planned specifications and whether the project is on schedule to be completed on time. If that is not the case, adjustments can be made to the project plan to ensure that the project remains on schedule and is completed on time.