Construction material takeoff is a core component of every detailed cost estimating software. Depending on the size and scope of the project, quantity takeoffs can vary from straightforward to complex. In addition, the quantity takeoff also varies depending on the needs of the individual. For instance, the specifics of a quantity takeoff for a general contractor would vary from that procured by an architect.

Despite their far-reaching use in the modern construction business, the process of developing quantity takeoffs can seem unclear to many. In this comprehensive guide, we’ll take a closer look at what quantity takeoff is, what elements constitute a quantity takeoff, what function it provides, and how to prepare an accurate and realistic quantity takeoff.

Through this discussion, the significance of a quantity takeoff for any construction project will become evident. If you’re looking to learn more about quantity takeoffs and how to develop one, keep reading for more information about this essential element of commercial estimating services.

What is a Quantity Takeoff?

There are many different names for construction quantity takeoffs in the industry. The good news is that when someone in the business mentions a construction takeoff, a quantity takeoff, a material takeoff (MTO), or just takeoff, it means the same thing. The different terms can be a source of confusion for many people outside the industry, so it’s best to get clarity about the concept before we jump into the process.

In simple terms, a material takeoff is designed to provide information about two aspects of construction.

• First, the MTO outlines the quantity of materialsthat will be required to execute any construction project. A comprehensive list of materials is drawn up, and their quantities are determined through manual processes or advanced software.
• Second, the MTO includes the cost of materialsthat will be used in the project. These detailed cost estimates make up a major chunk of the total costs associated with the project, and thus accuracy can make or break the project. The organization will use these costs to adjust for potential fluctuations that can affect project feasibility.

What to Include in a Quantity Takeoff?

While the idea behind a quantity takeoff is quite simple, the process itself is quite complex. Of course, the complexity of the project varies depending on the scope of the project but is also determined by how the material takeoff is prepared.

There are several methods to prepare a quantity takeoff (some more efficient than others), and we’ll discuss them in detail ahead. First, it’s necessary to understand what to include in a takeoff. As discussed earlier, a quantity takeoff has two broad components: the material quantities and the prices of those materials. Let’s take a closer look at these categories to understand what goes into each in more detail.

1. MATERIAL QUANTITIES

The first part of a construction quantity takeoff is determining exactly what materials will be used in the project. The list of materials needed can be very short or very long, depending on the scale of the project. For instance, a lumber takeoff services for a supplier will likely include fewer items compared to a residential construction project estimate for a general contractor.

The materials needed will be determined using the project plans, architectural drawings, or construction blueprints. The estimator will work closely with the architect or project engineer to determine the specific requirements and then compile a list of needed materials. Subcontractors developing their own material takeoff may include reference notes to determine material needs.

Once the estimator has determined what materials are going to be used, it’s time to work out how much quantity of each material will be required. There are generally four ways to determine the required quantity of each component. Here’s a breakdown of each:

• Simple count.For prefabricated items such as doors, windows, lighting fixtures, or hinges, the estimator will generally do a quick count of the required items. The description should include specific details like the make and model number to ensure the right items are ordered.
• Some items are measured using length. This includes materials like structural steel piping, lumber, ducting, or molding. Each material will include specific dimensions to meet construction design needs. Additionally, the takeoff may also include details about the weight to account for shipping charges.
• In cases where the material is a liquid, the volume is used to quantify the amount. For instance, when working with asphalt or concrete, volume plays a major role in determining costs.
• For components such as tiling, roofing, and flooring, the area of the material required is taken into consideration. Usually, the area is specified in square feet.

Apart from these considerations, it is also important to take into account the weight of the material. In most cases, the weight directly affects shipping and transportation costs and can greatly affect the profitability of large commercial projects that require significant quantities.

The second aspect to keep in mind when specifying quantities is the product description. Often, engineers and architects have specific materials in mind, and they should be adequately described in the takeoff to prevent placing incorrect orders.

2. MATERIAL COSTS

The second component of a quantity takeoff is the breakdown of costs. This process can be quite time-consuming because users must accurately determine the prices for each material required. These costs are then added together to find the total cost of the project.

Developing an accurate cost estimate requires critical thinking skills, good judgment, and knowledge of industry trends that can affect future prices of materials. Most cost estimates include some markup to ensure there is a cushion in case prices fluctuate upwards. Material prices can go up considerably in the time that the bid is submitted and the time that the materials are actually ordered for the project.

For smaller projects, subcontractors that are familiar with the process might find it easy to develop quick and accurate estimates. However, for large commercial projects that have several moving parts, it becomes more difficult. Contractors or project managers may also have to account for location-specific prices. As such, most construction firms opt for commercial project estimation services. This reduces the time and effort needed to determine project costs and increases the reliability of estimates too.

How are Material Takeoffs Prepared?

Given how critical a quantity takeoff is to the overall success of a construction project, it’s important to determine the required quantities and cost estimates accurately. A quantity takeoff can be prepared manually or using cost estimation software that uses digital blueprints to determine accurate prices.

Manual takeoffs take substantial time and are highly dependent on personal judgment. Consequently, they are highly prone to errors. In fact, professional studies show that when using traditional techniques of estimation, the final cost of the project can be 80% lower or higher than the original estimate.

Clearly, this high degree of inaccuracy is unacceptable when working with narrow margins. In such circumstances, it is highly likely that material overruns and overheads will cut into profitability and can even affect your bottom line negatively.

Using integrative digital takeoff software for creating material takeoffs is the clear winner. In the competitive business landscape, technology is essential to give construction a much-needed edge over competitors.

Location-specific cost estimates and accurate quantity takeoffs are possible with cutting-edge software that lowers the margin of error. The best part? Construction companies no longer have to retain a team of experienced construction estimate specialists on payroll—they can simply outsource the takeoff to commercial estimating services that save time, energy, and money.

About the Author

Isabelle is a construction design expert with several years of experience in the construction industry. She has a civil engineering degree and has worked on numerous residential and commercial projects in the United States.

Currently, she works as a consultant at the leading commercial estimation service provider, Remote Estimation. The professional cost estimation firm uses the latest integrative estimation software to offer realistic cost estimates and accurate construction material takeoffs to a wide variety of clients, including general contractors, project owners, architects, suppliers, engineers, and other construction clients in over 20 states. Interested readers can contact the firm online.