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July 24, 2018

5 Project Estimation Techniques and Project Estimate Template

What is Project Estimation?

Estimating is a vital part of the project planning phase and involves estimating the project costs, resources or duration. Estimating a project can be a challenging task no matter what the size or budget of the project is. The more complex and larger the size and budget of the project, the more difficult it gets to appropriately estimate the project. Faulty or incorrect estimates will result in delayed deadlines and breaking budgets – two key symptoms of project failure.


Project Estimation Template, Project Estimation Techniques, Project Estimate Template
Project Estimate Template

What are project estimation 4 main stages?

  1. Initiation:
    At this stage Analogous estimating technique is used. The estimates here are very high level and are mostly based on similar projects that have been done in the past in the organisation.
  2. Planning:
    During this phase, analogous or parametric estimating techniques are used.
  3. Final project plan:
    At this stage, team members are involved and information gathered from them are used in the estimation
  4. Weekly status:
    Rolling estimates are used every week until the completion of the project.

Why do you Estimate?

Estimating for a project is important in order to get a fair idea about the size /cost/ timelines for planning purposes. Estimation of cost, resources and time will help to understand when a project will get delivered and how much we will need to spend until completion. Estimates help to set expectations. It helps to show a client what’s going to be done. 

Who will do it, at what rate, what currency and how much tax and how many hours or days will be required. Estimation can serve as a valuable input to make a significant decision. It also helps in coordination. When several teams are involved and there is dependency of deliverables on a task that needs to be completed by one team, having near accurate estimates will help. 

For example: A system is being built and has involvement of team A and Team B. If a feature to be built by team A has been estimated to take 10 days to be completed before Team B can build the next feature, Team B can accordingly plan to work on some other deliverable while it is waiting for Team A to build the dependent feature.

Project Estimation Techniques

There are numerous estimation methods, but below are a few main ones that are commonly used for project estimation 

Analogous estimation: 

This is a comparative estimation method, where in the data from similar projects is taken into consideration while estimating for the current project. It is necessary to make sure that these referenced projects have been successful.

Expert judgement: 

This is probably the most common way people get an estimate. People with hand-on experience and understanding of the project requirements can help in getting fair estimates on the project.

Top down: 

This is another tried and tested method of project estimation. However, it lacks detailed analysis which can help assess the project’s success ability.

Bottom up: 

In this method, each task is estimated individually and then the estimates are rolled up to give higher level numbers. This method is more accurate than the top down method.

Parametric model estimation: 

This method auto calculates estimates using detailed data from previous activities. Though this is a quick method to get estimates, the data for these calculations needs to be robust.

Project Estimation Template

The project estimation template is used to estimate the cost, resource and time requirements to get a rough idea of what the project will cost and how much time and number of resources that will be required for its completion. It includes the following fields

Project Name: Name of the project being estimated

Project Manager: Person managing the project

Project Id: Unique identifier of the project

Project Sponsor: Person funding the project

Start Date: Expected start date of the project

End Date: Expected end date of the project

Project phase / Deliverables: This column lists down the project deliverables and the phases  that are to be estimated

Estimated hours: This column estimates the hours required to complete each task thereby helping to measure the total time required to complete the project 

Resources required: This field estimates the number of the resources required for completion of each deliverable/task

Cost: This column estimates the cost for every task/deliverable thereby helping gauge the total amount the project will cost until completion 

Remarks: Additional comments can be noted in this column.

To conclude, project estimation is essential as it helps in getting a fair idea of the cost, resources and time required to complete a project. 

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