- Now a day , In the process of estimating cost of construction industry in Thailand will be the duty of the contractor.
- Most of estimators always consider only direct cost. (Estimate in to detail very carefully) but roughly estimate in indirect cost.(with out any standard , Depended on experience of estimator)
- In the construction phase. There are always contingency between actual cost and estimate cost. But never record or analysis source of those contingency.
- Therefore, the volatility of construction costs, it happens frequently. Never been fixed or improve accuracy.
- This contingency make cost management difficult than it should be.