Accurate construction takeoffs allow contractors to produce precise, competitive bids and set their projects up for success from the outset. However, the process is time-consuming, prone to mistakes and requires specialized training. The good news is that a professional construction takeoff estimating service can streamline this measurement-intensive task, making it faster and more accurate.
In a nutshell, a construction takeoff is the process of measuring the scope of work via contract drawings, reading plans and specifications, and accurately counting the number and type of materials required to build a structure. The process takes place either manually or using a takeoff software solution. In the manual process, estimators review scope via blueprints and corresponding text and then measure each work item using a scale ruler or other sizing tool. The takeoff measurements are then recorded on a spreadsheet or better yet, an estimating software solution.
Depending on their area of expertise, contractors can use different methodologies when performing a takeoff. For example, a roofing contractor will require different measurements from a concrete contractor. However, the basic concepts are the same across all types of takeoffs. In addition to the scope of work measured, contractors also consider factors like material costs when completing a takeoff.
The process of creating a comprehensive list of materials and their respective cost is the foundation of any detailed estimate. For this reason, a detailed takeoff is one of the most important steps in the overall estimation process. Without a thorough, detailed takeoff, it is nearly impossible to provide an accurate estimate of the cost of a project.
To perform a detailed takeoff, estimators must break down the design shown on the drawings and described in the specification into predefined activities or work items that correspond to the operations they will perform to complete the work of the project. In doing so, they identify the specific materials, equipment and labor that will be required to meet the design criteria.
At larger construction firms, this may be done by an entire team of estimators specializing in various types of projects, such as architectural and structural engineering drawings, plumbing and site water reticulation and drainage drawings, electrical and HVAC drawings. Having a dedicated team of professionals performing these tasks ensures that the estimate is accurate and can be completed in a timely manner.
Once the takeoff is complete, estimators can calculate a material list that includes raw materials as well as manufactured fixtures. Then, they can apply their trade market values to determine the cost of the materials. Finally, they can factor in their time and equipment costs to determine an estimate of the total cost for the project.
The final step in the takeoff process is preparing the estimate, which typically involves adding in additional costs that will be incurred as part of the project, such as travel costs and applying a waste factor. The result is a detailed report that allows contractors to place more accurate bids and initiate projects sooner, sidestepping delays due to material shortages or other costly oversights.