10 reasons for cost overruns in construction projects

Rohit Gupta | November 24, 2022

The effects of cost overruns in construction projects can be devastating. Construction is a very capital intensive industry, which means overruns on even a single project can jeopardize payroll and equipment rentals elsewhere.

The effects of cost overruns in construction projects can be devastating. Construction is a very capital intensive industry, which means overruns on even a single project can jeopardize payroll and equipment rentals elsewhere.

In this post, we’ll look at the reasons for cost overruns in construction projects to help you better avoid them.


An estimator’s job is among the most important in construction. By accurately projecting costs for materials, labor, and equipment, they can help companies price jobs to ensure profitability. When estimates are inaccurate, however, project financials can go off the rails very quickly.

In fact, according to a survey, roughly 30% of construction companies experience regular overruns as a result of profits being less than what they expected based on the estimate. Additionally, 25% of respondents reported that just two or three inaccurate estimates could put them out of business.

You can avoid this by making better use of construction management software. Procore, for example, has an entire suite of financial tools that will help you ensure accuracy in project costing and bid management.

In addition to making better use of technology, watch out for these common estimating mistakes:

  • Failing to fully understand the project’s scope
  • Not taking risks into account
  • Making uneducated predictions
  • Sending estimates out before properly reviewing them
  • Neglecting to read subcontractor estimates thoroughly
  • Being overly optimistic about currency exchange rates (when applicable)


Cost overruns in construction projects are also often the result of poor designs and questionable planning. These mistakes can necessitate last-minute modifications, which can hold your project up substantially, costing thousands of dollars.

Again, a very easy way to avoid this sort of hassle is to use technology more effectively. Building information modeling programs can pinpoint potential problems long before workers begin construction.

It’s also much easier to change digital designs than to have physical sketches redrawn. In the latter scenario, you’d additionally need to distribute those changes efficiently to avoid workers relying on outdated information.


Not every cost is easy to predict, especially when you’re dealing with human beings.

Labor, in particular, can be hard to price thanks to inefficiencies such as time theft, which can be a lot more subtle and hard to detect than many construction companies think. Check out this article for some tips on accurately calculating labor costs with these hidden expenses in mind.

Other hidden costs some companies often fail to account for include permits, spontaneous changes, and unexpected increases in costs between the estimating and procurement stages. This is where having an experienced construction financial team really comes in handy.


Change orders are a common occurrence in construction yet they still catch some companies by surprise. This can lead to cost overruns in construction projects when inadequate resources (including time) have been allocated to compensate for adjustments.

Matters are only made worse when a construction company isn’t using adequate software that can disseminate change orders to the appropriate parties soon enough.

In such a scenario, even a small change order can have ripple effects that throw the entire project’s financials out of balance.

Good project planning techniques and programs include the capacity to simulate various types of scope changes during the preconstruction phase. This proactive approach can help companies avoid the effects of cost overruns on construction projects.


Construction resource management is among the most important aspects of any project. Done effectively, it can ensure resources are available when needed and help with forecasting as well as tracking.

Without good construction resource management, you’ll find workers are either chronically over or under-utilized and kept waiting around for resources that aren’t where they should be.

Platforms like Bettamint can help you avoid this by tracking resource utilization, dependencies, and much more.


Not having the right workers in place can manifest itself in a few different ways.

For one, it can mean having the wrong workers around, which might lead to inefficiencies on the job site and inferior work, which can lead to cost overruns.

Construction companies also increasingly find themselves impacted by labor shortages that have made workers in particular trades difficult (and therefore costly) to find.

Check out Bettamint for some tips on leveraging data to reduce the impact construction workforce gaps at your company.


The world changes at a breathtaking pace. As one of the biggest and most integral industries on earth, construction faces many of these changes head-on. The companies that thrive are those which promptly adapt to these changes.

COVID-19 is a classic example of a time when being nimble offered substantial benefits for construction companies around the world. Less-flexible companies found themselves struggling to navigate the new world of material shortages and social distancing guidelines.

The increased reliance on remote workforce management technology also negatively impacted companies that have been slow to adopt digital technology into their workflow.

Digitization, in particular, tends to be a common roadblock among older construction companies. As we discussed in this article, it’s one of a few areas in which analysts have been calling for serious change. Prompt digitization could save the industry billions of dollars every single year, including thanks to reduced cost overruns on construction projects.


Ineffective management on the job site can make inefficiencies like time theft even worse. Workers in the front office and physical laborers don’t always see eye-to-eye on things, which is why companies need good job site management to bridge the gap and keep everyone happy.

Beyond managing interpersonal conflicts, job site management needs to have a keen understanding of the project’s scope and what it will take to deliver on-time. Management should be able to make quick decisions using the correct tools and up-to-date information.


Construction projects have numerous moving parts. If those parts aren’t synchronized, cost overruns are very likely. Your company will lack a single source of truth, which is one of the pitfalls of ineffective remote manpower staffing and management.

Workers should have the skills and tools to facilitate proper communication between various stakeholders. This will ensure your project stays on track and on-budget.


Last on our list of reasons for cost overruns on construction projects, we have administrative errors. These can include things like:

  • Miscommunication concerning accounting
  • Poor document management
  • Inappropriate micromanagement (instead of allowing professionals to make decisions based on their expertise)

Administrative errors can be greatly reduced by establishing a data-driven culture rather than one that relies on guesswork.

The effects of cost overruns in construction projects can be devastating. We hope this article has given you some valuable insights into avoiding these pitfalls.