Basic Cost Estimating Steps using the NCE

1. Identify the Construction Task to be estimated.
2. Identify the materials to be used in completing the construction task.
3. Calculate the amount of work to be completed for the task, measured by the units for the task (eg. Framing is measured in square feet).
4. Find the task in the NCE. Use the search function, if possible.
5. Estimate the total cost to complete the task based on the figures for material and labor for the task.

Estimating Example Using the NCE

A residential project needs a complete framing estimate. It is a two story residence with a concrete slab foundation. The takeoff shows that the first floor dimensions are 35’ x 41’, and the second floor dimensions are 32’ x 38’. Standard materials will be used, so it is appropriate to use the Carpentry Rule of Thumb section of the Residential division of the NCE (2018).

Step 01: Identify the Construction Task to be estimated

• Framing of two stories with a concrete slab foundation.
• Standard specifications for stud, joist, and rafter spacing (16” on center), riser count, backing, blocking and bracing.

Step 02: Identify the materials to be used in completing the construction task

• Framing Lumber: Conventional
• Subfloor: 5/8" OSB
• Rough Stairway: 15 Risers
• Rafters, Braces, Collar Beams, Ridge Boards: 2” x 8”
• Roof Sheathing: 7/16” OSB

Step 03: Calculate the amount of work to be completed for the task, measured by the units for the task

• Framing is measured in SF.
• The SF for each floor must be calculated to measure the total amount of work to be done.
  • First Floor = 35’ x 41’ = 1,435 SF
  • Second Floor = 32’ x 38’ = 1,216 SF

Step 04: Find the task in the NCE

Keyword Search: Framing

From 2018 NCE, p 33:

Step 05: Estimate the total cost to complete the task based on the figures for material and labor for the task