The most important consideration when making a detailed estimate is:

The correct answer is option 2.

Factors to be considered During Preparation of Detailed Estimate:

1.) The nature of work:

• If nature of work is large then transportation charges, availability of material and labour should be kept mind.
• If nature of work is small then use of local materials and labour available should be done.

2.) Quantity and availability of material:

•  If quantity of material required is in large amount then concept of bulk purchasing in whole sale should be used, while deciding rates of items.

3.) Transportation of materials:

• If material required for project is not available locally the transportation charges should be added to each item while preparing detailed estimate.

4.) Location of site:

• If site is in the remote area or away from city then transportation charge should be included while costing.
• If site is not approachable then cutting of jungles construction of pilot roads, arrangement of electricity, transfer of machinery etc. requires large cost.

5.) Local labour charges:

• For preparing detailed estimate, local labour charges should be known to estimator.
• These charges should be revised from time to time.