Indirect Costs, Contingencies, and Profit - Examples & Applications

Indirect Costs and Profit Applications

Examples of calculating project overhead from a schedule and determining the final bid price.

Example 1: Calculating General Conditions from a Schedule

Moving away from flat percentages for hard-dollar bids.

For a highly accurate bid, an estimator must use the preliminary project schedule to calculate time-based General Conditions (Project Overhead).

A commercial building project is scheduled to last exactly

8 \text{ months}

Supervision: One full-time Project Manager at a burdened salary of $\$ 12,000/\text $, and one Site Superintendent at$ $9,000/\text$.
Facilities: The site office trailer rental (including utilities and internet) is $\$ 1,500/\text$.
Equipment: A tower crane is needed on-site for only $4 \text{ months}$ at a rental cost of $\$ 8,000/\text$.
Fixed Fees: The municipal building permit is a one-time fixed fee costing $\$ 15,000$.

Calculate the total detailed Project Overhead (General Conditions) cost.

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Example 2: The Final Bid Price Calculation

Applying markups sequentially to reach the final bid amount.

A general contractor calculates the following raw direct costs for a small commercial building project: Materials (

\

500,000

), Labor (

$300,000

), and Equipment (

$100,000$).

The contractor's standard markup policies apply

10\%

for Project Overhead,

5\%

for General (Home Office) Overhead. Following a risk review, they add a

5\%

Contingency for unforeseen site conditions based on the combined direct and overhead costs. Finally, the contractor desires an

8\%

Profit margin on the entire estimated cost.

Determine the final bid price to submit to the owner.

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Example 3: Margin vs. Markup Calculation

Understanding the mathematical difference between desired profit margin and profit markup multiplier.

A contractor calculates the total estimated cost (Direct + Indirect + Contingency) of a project to be

\

800,000

. The company's business plan requires a guaranteed

15%$ Profit Margin on the final contract price to meet its financial goals.

Calculate the required final bid price to achieve a

15\%

margin, and determine the equivalent Markup percentage applied to the cost.

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Key Takeaways

Calculating General Conditions (Project Overhead) accurately requires aligning site support costs with the expected project schedule duration, rather than applying a flat percentage to direct costs.
Markups must be applied sequentially; profit is typically a margin on the total estimated cost, which includes the contingency amount.
Estimators must clearly distinguish between Margin (percentage of revenue) and Markup (percentage of cost). A desired margin of $X\%$ always requires a markup greater than $X\%$ .