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How to Do Bill of Quantities

how to do bill of quantities

A bill of quantities (BoQ or BoQ for short) is a detailed and itemised pricing document that identifies all labour, materials and parts needed to complete the project. It’s prepared by a cost consultant or quantity surveyor and is issued to tenderers so they can price the project.

It is a critical document that must be developed to a standard methodology and recognized by everyone involved in the construction project. This ensures that the construction price is accurate and fair and that there are no misunderstandings or ambiguities in the documentation.

Taking Off

Whether you’re doing the bill of quantities yourself or using a service, quantity takeoff is an important part of the construction process. It helps you prepare a detailed estimate and bid for projects.

It also ensures that you have the right materials for your project. A good material quantity takeoff can save you time and money on the job and help you avoid costly mistakes.

A takeoff is a crucial part of the estimating process and should be done by everyone involved with the front end of a construction project. This includes contractors, subcontractors, and others who may be estimating the work.

Traditional takeoffs are often performed manually by estimators using paper blueprints, scale rulers, or a calculator. They require a lot of skill and can be time-consuming.

The newest way to do quantity takeoffs is through estimation software that utilizes artificial intelligence and machine learning to make them more accurate and reliable. This type of software can scan 2D blueprints and import them into the system, where it then takes over all the complicated calculation functions.

These digital quantity takeoffs are very popular for large-scale projects because they are highly accurate and can be completed very quickly. They still require data to be entered by a human, but they can be much faster and more accurate than a manual method. They also provide better pricing information than a human can because they can access cost libraries that have been uploaded by the contractor or project manager.

Item Numbers

Item numbers are an essential part of the bill of quantities process. They help you identify all of the items needed for a project and their prices. They can also help you compare several quotes and determine which one is the best choice for you.

Stock item numbers have seven digits that identify the item and a one-digit kind code designation. They are usually assigned to a particular material within our Material System, but can also be used as an international item number.

When doing a bill of quantities, make sure to create the item numbers carefully. You need to design a format that works for your inventory reporting needs and sorting requirements.

The best way to do this is to create an item structure in Inventory Control that contains all of the formats you want to use. This will ensure that you can enter all of the appropriate item numbers into your system.

You can also create an item structure that uses a particular pattern to help you sort your items. This will help you save time on the creation of your bill of quantities and ensure that you can find items quickly in your reports and lists.

When doing a bill of quantities, it’s important to keep in mind that you should not use characters that might be confusing to people or software. For example, you should not use commas or symbols that look like dates in your item numbers.


When it comes to doing bill of quantities, materials are one of the most important components. This is because they can determine a project’s cost, the time it takes to complete, and the quality of its results.

There are many different types of materials. These include natural elements, such as rocks and plants, and nonliving things, such as metals and precious gems.

Material selection is the process of choosing which material to use for a particular purpose. This can help to ensure that the final product is safe, functional, and efficient.

It’s also important to understand the properties of a material, such as how it lets electricity or heat pass through it. Depending on these properties, materials can be soft, hard, flexible (bendable), rigid, transparent, opaque, and rough or smooth.

Materials come in all shapes and sizes, and can be used for a variety of purposes. Some are sustainable, while others can’t be re-used.

A material can also be broken down into sub-assemblies. For example, a cake might have two sub-assemblies: the layers and the filling.

The bill of materials is a critical component of any construction project, and it’s important to make sure that you have all the necessary inventory on hand. If you have an organized material requirements plan, a robust inventory software solution and accurate quantities, you can ensure that you never run out of components.

Units of Measurement

Units of measurement are important in describing how long, wide, tall or heavy something is. They help convey the value of a physical quantity and are standardised for different systems.

Length is a physical quantity that can be measured in various units such as millimeter (mm), centimeter (cm) and inch (in). It also includes distance, height, thickness, and depth.

The metric units of measurement are kilograms (kg) and grams (g). The imperial units of measurement are pounds (lb) and tons (t). Weight is a measure of mass and can be expressed in gram (g), milligram (mg), or kilogram (kg).

It’s essential to know which unit of measurement you are using when creating a bill of quantities. This is especially true if you are writing for international content.

When you are creating a bill of quantities, you should use standard units of measurement that support readability and accuracy. They also make it easy for users to understand and compare your content with others.

You can also use a non-breaking space between the unit and the quantity to separate them. This helps users distinguish one from the other and prevents them from reflowing to the next line.

The international system of units is a convenient and commonly used set of standardized units that are based on natural units. This system is mainly used in science, but can also be found in engineering.

Item Rates

When doing bill of quantities, it is important to understand item rates. They are costs per unit of materials, labor or equipment, and they help you to determine if your bid is competitive and to calculate the price for your project.

Item rates are calculated based on the total cost of materials, labor or equipment and a percentage of the overhead and profit that is associated with the work. This percentage can vary from project to project, but is typically between 2.5 and 25 percent.

A bill of quantities (BoQ) is a standard document used in tendering process in construction projects. It is prepared by a quantity surveyor using construction drawings. It includes detailed specifications of each part of the work and is able to accurately record the quantity required to complete the project as outlined in the drawings.

The document is commonly used on larger projects where several contractors or subcontractors will be involved in the construction. It is also helpful in determining the scope of the project and its feasibility.

Item fill rate is a measurement of how well you are managing your inventory. If your item fill rate is too low, it can indicate that you are not properly warehousing goods and that you are likely to have back orders or stockouts. This can have a negative impact on your customer service levels and sales.


Taxes are levied by governments to fund public works, services, and infrastructure, as well as redistribute wealth. They can be direct or indirect.

Indirect taxes include sales taxes, value-added taxes, excise taxes, and tariffs. They are added to a transaction as a percentage of the value of goods or services, or in money or its labor equivalent.

Many governments use different kinds of taxes and vary them. They also use tax rates to distribute the burden of taxation among individuals or classes of the population involved in taxable activities, or to increase or decrease economic welfare.

Some taxes are used to change consumption patterns in a specific area (social engineering). These include high excise taxes on alcohol or tobacco, which may be combined with hypothecation if the proceeds are then used to pay for treatments of alcohol or tobacco addictions or for other healthcare costs.

Another type of tax is the Pigovian tax, which targets undesirable production or excess demand of certain public goods. These can include climate change, polluting fuels, water or air pollution, goods that incur public healthcare costs, and goods which cause societal harm.

When calculating the amount of tax owed, economists must account for how quantities will vary with prices, known as the elasticity of supply and demand. These factors determine whether the tax will be absorbed by the seller or the buyer, and how much of the tax will be paid by both parties.