Constructability (or buildability) is a project management technique to review construction processes from start to finish during pre-construction phase. It is to identify obstacles before a project is actually built to reduce or prevent errors, delays, and cost overruns.
The most effective constructability reviews are completed by going through the construction process step by step. As you conceptually walk through the construction process you will inevitably discover details or written information that are either incorrect or missing from the documents. When these problems are noticed, you add them to the review comments. This is a basic and simple methodology, but it is also very time consuming. It is recommended that constructability reviews be performed in five common phases: 1) Structural, 2) Building Envelope, 3) Interior Architectural, 4) MEP and 5) Site work.