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May 10, 2025

BOQ vs BOM Difference

BOQ vs BOM Difference a interesting topic to discuss. Within project management and within construction types of work, two terms are often encountered. These terms are BOQ (Bill Of Quantities) and BOM (Bill Of Material). Both of them are important, but each serve a unique need. While, many comparisons are made, these two also differ in their areas of uses. In this post, we will share BOQ vs BOM: Key Differences and Importance for Construction and Manufacturing. We will also highlight their significance. Lastly, we will find how they are used in many case scenarios.

What is BOQ (Bill of Quantities)?

A BOQ refers to a list or a document that specifies the work needed to fulfill the requirements of a project as well as the materials needed. . It is an essential part of construction projects. It “works” as a measurement list in which the quantity of each item is already worked out. This document assists in making estimation easier with regard to the total amount of the project alongside others in the competition.

What is a BOM ( bill of materials)?

A BOM or bill of materials is a comprehensive list of parts, components, materials, and quantities needed to manufacture or assemble a product. BOMs find use outside engineering and manufacturing, such as in electronics. It serves as a basic instructional outline, directing the collection of materials and components to avoid errors.

Difference between BOQ & BOM

Let’s see the difference between BOQ and BOM below:

Purposes:

  • BOQ (Bill of Quantities): The purpose of BOQ ( Bill of Quantities) is to quantify the amount of work and identify the types of work. This is basically used for construction industry like construction of building, road bridges etc. BOQ can identify the cost of project and time.
  • BOM (Bill of Materials): The purpose of BOM (Bill of Materials) is to identify the necessary products and materials and collect it to complete a specific project. This is bacillary used for In production, BOM are using.

Types of Work or materials

  • BOQ is basically applicable for construction work like cement, brick, paint etc. This only concentrate on quantify the materials.
  • A BOM applies to production or mechanical work, listing all individual components of a product such as screws, nuts, bolts, and other parts.

Area of Use

  • BOQ is mainly used for construction project like house, bridge, road etc construction.
  • BOM is used for manufacturing industry such as manufacturing, electronics and vehicles productions etc.

Description & Details

  • BOQ typically includes quantity of works, measurements, quantity, types of product and detail types of work.
  • BOM generally includes name of products, code, amount, size and others technological details.

Creation Process

  • To create BOQ, must requires design of project and plan. It completely depends on types of work and quantities.
  • To create BOM, product design and technological specification required.

Importance of BOQ and BOM

Importance of BOQ

BOQ is an important element of construction industry, because it ensures that the every part of the project is finished as per requirements. It helps to plan construction cost and  provide guideline of timely supply of required materials. BOQ works as a guideline of contractor and coordinate between teams.

Importance of BOM

BOM is very important for manufacturing industry. This ensures the quantity of materials and its quality. It facilitate the production process, because it gives a clear list of all parts of a machine for its production and helping manufacturers determine the ordering and availability of materials.

Example: Use of BOQ and BOM in Construction Projects

Lets say you are building a house. In this case, you will create BOQ, which will show all required amount of cement, sand, brick, rebar etc. This will help you to make budget and plan to finish the project.

On the other hand, if you want to manufacture an automobile, BOM is required. Because, here you have to list every single part of the machine and supply it on time for smooth production.

BOQ-Specific Software

BOM-Specific Software

Final Words

Construction professionals use BOQ to determine work quantities, while manufacturers use BOM to list required parts. Both serve different purposes with fundamental differences: BOQ for construction, BOM for manufacturing products. Depending on the type of your project or product, you can choose the right document between the two. Since, both documents are essential for accurate, efficient project management, project managers must ensure their correct use.For any kid of support, please comment at comment section of this blog CE Tutorial. Also we provide quantity takeoff service. If you need this support, please contact us via contact us page.

Author: Akidul Islam, Construction Manager, 10 years of experience

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