Fidrel

Terms

Construction cost estimate vs budget: four terms that get mixed up

Owners and project managers use estimate, baseline and budget as if they were one number. They are not. An estimate is a projection, a baseline is the version someone approved as the starting point, and the budget is the authorized amount you then track, with approved changes added on top. This page defines each term and shows where it sits in Fidrel, so the number in the cost report has a clear source.

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The Fidrel budget on a laptop, tablet and phone, with original and current budget by line item

How the terms get confused

Three documents all called the budget

The cost consultant’s estimate, the contractor’s price and the owner’s spreadsheet each carry a total, and each gets called the budget in a meeting. When a variance is reported, nobody agrees which number it is measured against.

A budget that quietly absorbs every change

When change orders are folded straight into one budget figure, the original amount disappears. The owner can see where the project stands but not how far it has moved from what was approved.

A forecast mistaken for the budget

An updated view of the final cost is useful, but it is an opinion about the future. If it replaces the approved amount, nothing remains to measure the overrun against.

Four terms and what each one is for

An estimate is a projection of what the work will cost at one point in the design, and a project usually has several. The baseline is the single estimate the owner approves as the starting point, which is why Fidrel locks it. The budget is the baseline carried into cost control: the original budget stays fixed, and the current budget is the original plus approved changes. A forecast is an assessment of the cost at completion; in Fidrel it is either a forecast estimate or the estimate at completion that cost tracking shows beside the current budget.

Cost estimation
A locked baseline estimate with current budget, committed, invoiced, estimate at completion and variance, and original budget columns

A small example with round numbers

Say the approved baseline estimate totals 10,000,000 dollars. That is the original budget, and it does not change. Two approved change orders add 150,000 dollars, so the current budget is 10,150,000. Invoices and commitments are measured against the current budget, while the original figure still answers the question of how far the project has moved from what was approved. These numbers are only an illustration of the arithmetic.

A draft baseline estimate with a note that it is not the approved project budget, and buttons to submit for review and approve as baseline estimate

How the four terms play out in Fidrel

  1. Step 1

    Build the estimate

    An estimate is built in groups and line items with quantity and unit price or a fixed amount, and it can be a baseline, alternate, working or forecast estimate. It is a draft: nothing is tracked against it, and the screen says it is not the approved project budget.

  2. Step 2

    Approve one as the baseline

    Submit the estimate for review and approve it as the baseline estimate. It is locked, it becomes the original budget, and every priced line item becomes a budget item. There is one approved baseline estimate at a time.

  3. Step 3

    Add approved changes on top

    Approved change orders, revisions and other budget changes are totaled separately and added to the original to give the current budget. A change order linked to a budget item stays an expected change until an administrator approves it.

  4. Step 4

    Compare the forecast with the current budget

    Cost tracking shows committed and invoiced amounts against each line item, with the estimate at completion and the variance. A revision can later replace the baseline, and you choose whether approved changes stay on top of it or are folded in.

Contingency and revisions

Contingency is part of the budget. In Project finances, a contingency amount can be assigned, released and consumed, and consuming it moves budget to the receiving item without increasing the project total. When the design changes enough to need a new estimate, you create a revision of the baseline, and the history shows who approved it, when, and the budget before and after.

What this does not decide for you

Fidrel does not tell you how much contingency or reserve to hold, or when to release it. Fidrel does not grade an estimate by accuracy; the phases of a project are names you choose. A forecast estimate cannot be approved as the budget, and only one baseline estimate is approved at a time.

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An estimate is a projection of cost; a project can have several. The budget is the amount authorized for the project. In Fidrel the budget starts as the one estimate approved as the baseline, then changes only through approved changes.