How to Do Software Project Estimation: A Complete Guide

  • Saurabh Sharma
  • Jan 11, 2023
  • 7 Min Read
How to Do Software Project Estimation

Article posted by

Saurabh Sharma

VP of Engineering

VP of Engineering at Closeloop, a seasoned technology guru and a rational individual, who we call the captain of the Closeloop team. He writes about technology, software tools, trends, and everything in between. He is brilliant at the coding game and a go-to person for software strategy and development. He is proactive, analytical, and responsible. Besides accomplishing his duties, you can find him conversing with people, sharing ideas, and solving puzzles.

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Looking to estimate the cost and time needed to complete your next software project? You're in the right place. In this guide, we'll discuss everything from the basics of software project estimation to more complex methods like agile estimation.

We'll also cover tips and tricks for making the process as smooth and accurate as possible. So whether you're just starting as a software development agency or want to build something for your business, read on for a comprehensive guide to software project estimation.

Gathering the Right Information for Right Software Project Estimation

The first step in any estimation is getting the correct information. With the correct data, you can hope to do an accurate estimation. This means gathering data from all relevant sources and ensuring you have a complete view of the project.

This can be difficult, as different people with different levels of knowledge can manage different parts of a project. As the estimator, it is your job to collect accurate information in the most desirable quantity and to put together a comprehensive plan that accounts for every detail.

Understand Project Complexity and Dependencies

To estimate a project accurately, you must understand all the moving parts. What features does the project need? What development work needs to be done? What are the potential roadblocks?

You also need to take into account any dependencies the project may have. For example, if you're building a website, you'll need to factor in the time it takes to design and develop the templates. If you're developing a mobile app, you'll need to consider the time needed for user experience design and testing.

Also Read: SaaS vs Custom Software Solution - Which One Fits Right for Your Business?

Break Down the Project Into Estimable Tasks

"How do you eat an elephant? One bite at a time!"

You may have heard the above saying a couple of times. Well, it more or less summarizes what software project estimates are all about. You can't estimate the entire project at once—you need to break it down into manageable tasks.

Rather, we must put it this way- "Never estimate an entire project all at once".

To do this, you'll need to understand the project requirements well. What features? What goals? Once you know what needs to be done, you can estimate individual tasks.

This is where your team's expertise will come in handy. Ask them how long they think specific tasks will take, and then use that information to come up with an estimate. Be realistic and use your best judgment when assigning timeframes.

No one is perfect, and estimations will constantly change as new information becomes available. But by breaking down the project into smaller tasks, you'll get a better idea of how much work is involved and can plan accordingly.

Calculating Effort, Duration, and Cost

Now that you know what inputs and factors are at play, it's time to learn how to calculate effort, duration, and cost. You may need to calculate one or all three of these parameters depending on the context.

The effort is typically calculated using resources such as person hours or machine capacity. You'll need to know how many resources you need and how long based on the task size and complexity. This will help you identify the total effort hours required for a project.

Duration is the length of time for a task or project execution. To determine this number, use algorithms like PERT or Critical Path Analysis (CPA) that consider various dependencies between activities and tasks to estimate the total duration of a project.

Finally, cost estimates come after calculating effort and duration. This involves setting a rate per unit of resource used, factoring in overhead costs such as taxes and facility costs, and multiplying these numbers to estimate the total cost.

Fully Accounting for Risk

While the process of risk management itself isn't necessarily a new concept, integrating it into your project estimation can have a massive impact on the long-term success of your software development project.

When looking at risk-related items in your software project, consider how these may affect the effort and cost of the project. How can we reduce the project's risks? What tasks will be impacted by the presence of risk? Can we proactively plan for unexpected issues?

You can use modern-day tools and techniques to map and manage risk in software development projects. When building out your estimates, it's essential to consider these risks so you can plan for them and ultimately prevent issues from arising that could negatively impact your bottom line.

Key Metrics for Tracking and Evaluation

The next step in the software project estimation process is establishing key metrics for tracking and evaluation. This involves setting goals, objectives, and targets that will provide feedback on the progress and success of your software project.

Tracking metrics provide measurable outcomes that you can use to assess your project's performance and determine if the project is on track or deviating from initial estimates. Key metrics may include costs, scope, timeline, efficiency, impact on customer satisfaction, etc.

Best Practices While Estimating

Accurate estimation allows for the proper allocation of resources and the setting of achievable goals. Inaccurate estimation can lead to cost overruns and schedule delays. The following practices can help improve the accuracy and reliability of software project estimates:

  1. Define the project scope and requirements
  2. The first step in estimating a software development project is to define the project scope and requirements. This includes understanding the business goals of the project and the features and functionality that need to be implemented. With a clear understanding of the project requirements, estimating the effort required to complete the project accurately is easier.

  3. Use a requirements-based estimation approach
  4. A requirements-based estimation approach is often the most accurate way to estimate software development projects. This approach involves breaking down the project requirements into specific tasks and estimating the effort required to complete each task.

  5. Use historical data to estimate project effort
  6. If you have historical data from past software development projects, you can use this data to help estimate the effort required for future projects. This data can include the number of hours required to complete specific tasks, the average number of defects found in the testing phase, and the average time it takes to deploy a new release.

  7. Estimate the effort required for each phase of the project
  8. It is helpful to break down the estimated effort required for a software development project into specific phases, such as requirements gathering, design, development, software testing, and deployment. This allows you to estimate the overall effort required for the project more accurately.

  9. Use a risk-based estimation approach
  10. A risk-based estimation approach considers the potential risks and uncertainties that could impact the project. This includes factors such as the project's complexity, the availability of resources, and the potential for unexpected problems.

  11. Estimate the effort required for each task
  12. When estimating the effort required for a software development project, it is helpful to break down the tasks into small, manageable chunks. This makes estimating the effort required for each task and tracking the project's progress easier.

  13. Use a team-based estimation approach
  14. A team-based estimation approach involves getting input from all development team members. This allows team members to share their knowledge and expertise, resulting in a more accurate estimate.

  15. Use a tool to help estimate project effort
  16. Several software tools can help you estimate the effort required for a software development project. These tools allow you to enter the project requirements and generate an estimate for the effort required to complete the project.

What If Your Software Project Estimates Are Over Budgeted?

If your software project estimates are over budget, there are a few things you can do:

  • Renegotiate your contract with your client/stakeholders
  • Find cheaper development resources
  • Cut features from your project

Even better would be to get in touch with an expert. You can find one easily by getting in touch with custom software development services.

Request a Project Estimate from a Software Development Agency

Without accurate estimation, it can be difficult to determine whether a project is feasible and how much it will cost. Are you struggling to estimate the time and resources necessary to complete your software project? Do you need help prioritizing your project tasks?

Experienced custom software development services can help you assess the time and resources necessary to complete your project, identify and prioritize project tasks, and help you stay on track and budget.

Also Read: How to Hire Web Development Agency - Step-by-Step Guide

An experienced team understands that every project is unique. They can provide a detailed estimate for your entire project or help you prioritize and estimate specific tasks. And in case you have already completed the initial development cycle, you can use their expertise to track your project's progress and adjust your budget and timeline as necessary.

Final Words

So, there you have it. A complete guide to software project estimation. This guide won't be perfect for every project; it should give you a good starting point. We hope you will use the information to estimate the time and resources required to complete a project.

And if you still need help, hiring an expert is a wise choice. Contact reputable custom software development services if you have questions or need help with your project.

Also Read: How to Calculate Website Redesigning Cost

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