Don’t Underestimate the Construction Estimator: Key Responsibilities

By

Kristen Frisa

, Bianca Holtier Coury

, and Kacie Goff

Reviewed by 

Nicholas Dunbar

and Zoe Mullan

Last Updated Jul 23, 2026

By

Kristen Frisa

, Bianca Holtier Coury

, and Kacie Goff

Reviewed By

Nicholas Dunbar

and Zoe Mullan

In construction, the estimator's role is fundamental to project success. These professionals have a broad knowledge of building materials and understand what different projects require. They also stay current with building methodologies, and track fluctuations in market prices and relevant regulatory standards, including CIS compliance.

Estimators control the preconstruction process, establishing the financial baseline before starting on site. Without them, construction firms would be hard-pressed to turn a profit or win new business.

This article explores what a construction estimator does and the many challenges they face.

What a Construction Estimator Does

To win work, contractors have to submit tenders. That requires them to walk a fine line between how much a project will cost and how much they will spend. Clients don't want to spend more money than is necessary, so a lower tender can attract them. That said, if the contractor underestimates the project's costs, it shrinks the company's profit margin.

In other words, construction firms want their tenders to be as accurate as possible to help them win business and turn a good profit on that project. To build in that level of accuracy, they turn to a construction estimator.

It's a fairly common misconception that a construction estimator is primarily a number-cruncher. While that's certainly part of their role, these individuals play a significant part in a firm's business development. Without them, firms wouldn't be able to create accurate, competitive tenders. Without being competitive, they would struggle to win business. And without accuracy, they could overpromise and underdeliver, tarnishing the company's reputation – and hurting their ability to land future projects.

Because estimating is this person's main focus area, they pull together a range of skills and assets that help drive precise tendering, including:

• Knowledge about direct costs, like materials
• Insight into indirect costs, like overheads
• Relationships with suppliers and subcontractors, connecting them to more accurate pricing
• The ability to analyse drawings and specs
• Contingency planning

Anyone curious about how to become a construction estimator needs capabilities in a range of areas, from cost analysis to relationship building.

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Types of Estimators

Some estimators take on any project their firm wants to tender on. The company they work for largely determines what they estimate. A construction estimator working for a main contractor, for example, will have a much wider range of trade packages to price than an estimator working for a subcontractor who only pours concrete.

In large construction firms, employers often narrow an estimator's focus to a specific speciality. For instance, a firm may employ a dedicated mechanical estimator, electrical estimator, plumbing estimator and structural estimator.

In rarer cases, a client might hire an estimator (or a main contractor for their estimating services) before a project gets underway. In this instance, the client uses the construction estimator to get a feel for the project’s feasibility. The cost plan information they receive also gives them a baseline to compare tenders against.

A Day in the Life of a Construction Estimator

The daily activities of an estimator vary depending on the projects they're currently involved in and the status of those projects. Estimating concentrates on the front end of a project, the preconstruction phase. Even so, the work required in this role doesn't necessarily stop once work starts on site.

To provide a clearer idea of what a construction estimator may do on any given workday, it's helpful to look at project phases.

Pre-Tender

Before a tender ever hits an estimator's desk, they have plenty of work to do. They might scour the web, looking at tender portals and tracking indices. This keeps a finger on the pulse of material pricing and how it's likely to move. Anyone interested in learning how to become a construction estimator would benefit from understanding how to monitor material costs in this way.

But an estimator's pre-tender work isn't soley about data tracking. They often also engage with subcontractors to keep those relationships warm, so it's easy to get information quickly when they need it.

Ultimately, the construction estimator has continual work to do so they're poised to cost a project accurately when the need arises.

During the Tendering Process

Once a contractor gets invited to tender a project, the workload for a construction estimator grows. They spend time reviewing the drawings and specifications in detail, and they often visit the site, too. Their goal is to gather all the details they need to estimate the costs of the project as accurately as possible.

They then return to their desk to create the estimate, which often means breaking down the scope of work by each trade and investigating the granular details to get as much clarity as possible into potential expenses.

The construction estimator also creates the material takeoff, which quantifies the materials required for the project. Combining the takeoff with their own pricing knowledge enables them to estimate the overall cost of the project.

However, not every cost of a construction project is tangible. Estimators need to consider the following, too:

• Insurance
• Performance bonds
• Planning permissions and building control fees
• The cost of temporary offices on the site
• Equipment depreciation, maintenance, insurance, etc.
• Software used on the project

On top of that, estimators need to protect their company's profit margins by accounting for the wide range of costs that come with running a construction firm. The profit the company makes needs to cover not just employee wages and salaries, but also benefits like insurance, holiday pay and pension contributions. It also needs to keep the lights on at the office and cover the cost of leasing that office.

Clearly, estimators have a great deal to take into consideration when pricing a project.

As the deadline for the tender approaches, the intensity can tick up even further. It's not uncommon for estimators to receive a call at the eleventh hour giving them the final details they need from subcontractors to incorporate into the tender before handing it to the client.

Post-Tender

When the estimator submits a tender, their role shifts depending on whether their firm wins the project. Either way, they continue to do work that delivers significant commercial value.

If the firm doesn't win the tender, the company often holds a post-tender debrief to evaluate why it wasn't chosen for the project – and how it can refine its tendering strategy to improve its likelihood of winning future business.

If the firm does win the tender, the estimator hands the project over to other stakeholders who will manage it on site. They may still stay involved, however: if the client submits a major variation, for example, the estimator may return to plan for that adjustment, helping the firm determine how much to charge for the work.

The Challenges of Estimating

While construction estimating can be a fulfilling career path, it's not without its difficulties. These include:

• Timing

  Estimators must coordinate with the wider preconstruction team to ensure the project programme aligns with strict budget constraints. Companies often have little time between receiving an invitation to tender and the submission deadline, so estimators have to be ready to act quickly – and to sacrifice as little accuracy as possible in doing so.

• Difficulty Getting Information

  In many cases, a construction estimator has to rely on someone else to get the information they need. For example, they may have to wait to hear back on a request for information (RFI) from a subcontractor about current labour rates and availability.

• The Balancing Act

  Overestimating a project's costs could mean losing a tender because the client chooses a more affordable option, while underestimating eats into the company's profit margin. Estimators therefore have to walk a fine line, making precision a key asset in their work.

• Blended Skills Requirement

  Estimators need to be strong at maths and analytics, but they also need to be able to maintain relationships with internal collaborators and external subcontractors who provide pricing information. Communication skills are often overlooked, yet they make up some of a great estimator's strongest attributes. Estimators also need a level of accounting expertise paired with a solid grasp of the construction process.

• Pressures of the Job

  Many construction estimators feel responsible for their company's success. To a large extent, their company's ability to win new work hinges on their ability to do their job well, and if their estimate ends up being too low, they often feel responsible for cost overruns.

Career Outlook for Construction Estimators

The work required to fulfil an estimator's responsibilities is extensive, but a competitive construction estimator salary can compensate for a good deal of that responsibility. As a result, many people interested in construction, accounting or simply a stable career path wonder how to become a construction estimator.

Successful estimators combine an analytical mind comfortable with numbers with a genuine interest in the construction industry. They should enjoy running calculations as much as they enjoy walking the site.

For a better feel for this role, aspiring estimators can turn to one of the leading professional organisations, such as the Royal Institution of Chartered Surveyors (RICS), whose qualifications are aimed primarily at quantity surveyors but offer relevant training for estimators too. These certifications can also help estimators bolster their knowledge base and analytical expertise, providing further insight into the role.

Shadowing an estimator for a day is another worthwhile step for anyone exploring how to become a construction estimator. Getting familiar with their responsibilities gives newcomers a much better feel for the job – and all the work required to earn a construction estimator salary. This can easily surpass £60,000 at a senior level.

Individuals looking to combine their strengths in finance and construction often find construction estimating very rewarding. This role allows them to be involved in the front end of projects, helping companies win work and, in doing so, driving the firm's success.

What's more, estimators have opportunities to expand their career path. A good estimator could build the skills needed to thrive in senior commercial or project leadership roles.

How Technology Is Changing Estimating

Not so very long ago, paper was the be-all and end-all of construction estimating, with estimators spending their days poring over rolls of drawings.

Today, though, a construction estimator needs to be tech-savvy. Using tools ranging from material pricing databases to cloud-based spreadsheets that allow for collaboration delivers a number of benefits. Digital estimating processes give more people visibility into the process earlier on, allowing for more opportunities for cross-checks. At the same time, connecting estimating to other technology – like BIM models – builds even more accuracy, while technology more broadly helps expedite processes, helping estimators meet tender deadlines.

As technology evolves, some parts of a construction estimator's job will get easier. Even so, accurate estimating still relies on the individual's contributions. From relationships with subcontractors to experience overcoming obstacles in past projects, an experienced construction estimator brings a great deal to the table to help their company succeed.

Written by

Kristen Frisa

Contributing Writer | Procore

126 articles

Kristen Frisa is a contributing writer for Procore. She also contributes to a variety of industry publications as a freelance writer focused on finance and construction technology. Kristen holds a Bachelor of Arts in Philosophy and History from Western University, with a post-graduate certificate in journalism from Sheridan College. She lives in Ontario, Canada.

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Bianca Holtier Coury

Education Audience Marketing | Autodesk

20 articles

Bianca Holtier Coury spent 15+ years in various roles managing construction projects, such as Preconstruction Team Lead, Purchasing Agent, and Project Manager. She has a wealth of experience in all project phases, including managing project schedules and budgets, bid management, and coordinating vendors and subcontractors. Bianca is an Associate Member of AIA and a LEED Green Associate. She currently serves as Director of Partnerships for the Construction Progress Coalition. Bianca holds a BA in Urban Design and Architecture Studies from NYU. She lives in Cleveland, OH.

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Kacie Goff

Contributing Writer | Procore Technologies

97 articles

Kacie Goff is a construction writer who grew up in a construction family — her dad owned a concrete company. Over the last decade, she’s blended that experience with her writing expertise to create content for the Construction Progress Coalition, Newsweek, CNET, and others. She founded and runs her own agency, Jot Content, from her home in Ventura, California.

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Reviewed by

Nicholas Dunbar

Content Manager | Procore

74 articles

Nick Dunbar oversees the creation and management of UK and Ireland educational content at Procore. Previously, he worked as a sustainability writer at the Building Research Establishment and served as a sustainability consultant within the built environment sector. Nick holds degrees in industrial sustainability and environmental sciences and lives in Camden, London.

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Zoe Mullan

27 articles

Zoe Mullan is an experienced content writer and editor with a background in marketing and communications in the e-learning sector. Zoe holds an MA in English Literature and History from the University of Glasgow and a PGDip in Journalism from the University of Strathclyde and lives in Northern Ireland.

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