Building Quantity Surveyor: Do I Need To Hire One for My Building Project?

In the world of construction, quantity surveyors are responsible for ensuring that construction projects are completed on time, within budget, and to the required level of quality. They use a variety of methods, including aerial mapping and measuring tools, to determine the size, shape, and location of objects in a construction project. Quantity surveyors also keep track of changes in project conditions and make necessary adjustments to project plans as needed.

What Does a Quantity Surveyor do?

A building quantity surveyor is a building-construction professional with in-depth knowledge of construction costs and contracts. Also known as a cost estimator, the QS’s role is to produce overall cost estimates for construction projects, but their services extend much further than that and can be tailored to the requirements of a particular job. A quantity surveyor will develop an initial expense projection by making use of the design sketches.

Is it Worth Using a Quantity Surveyor on a Self Build or Extension?

Building projects often run counter to expectations and can happen overnight when cost management consultants are excluded. An informed cost estimator supplies an estimate that helps reduce costs from the earliest stage, getting you the best prices and quality of materials and trades available to complete the project within your preferred budget. They keep track of the budget during the build, maintaining real-time cost data for the client.

What Does a Quantity Surveyor Need to Make an Accurate Estimate?

Establishing a clear understanding of your requirements from the outset will subsequently raise your architect’s confidence in the accuracy of an estimate. Providing all required materials, including Building Regulations, as they relate to the architecture job will guarantee that an accurate estimate of the cost of the plan is finalized and approved.

What Does a Quantity Surveyor do if I Haven’t Decided on Some Elements of my Build Yet?

In this instance, a surveyor will use a Provisional Sum to allow for a provisional cost to be still allocated within the budget. The budget may be defined or undefined.

A specific example would be a kitchen or a restroom. An undefined example would be where an item has not yet been designed, such as work required under the existing structure of a structure (e.g. dumping), where the ground conditions cannot be determined until the structure of the dirt is pulverized and the dirt is introduced.

Should I Use a Quantity Surveyor for a Renovation Project?

Renovation projects can be planned and just as pricey and costly as new buildings and construction, particularly if the scope of the undertaking is quite broad. But deciding whether to hire a pro for a renovation undertaking will largely depend upon the dimensions of the work and the finances involved.

Generally speaking, the more invasive and extensive the remodelling, particularly including structural modifications, the greater the likelihood of discovering issues that lead to higher costs and longer delivery times. Involvement of particular specialist quantity surveyors can be highly advantageous when planning renovations in a listed building or property located within a conservation area since such locations place restrictions on the kinds of materials that can be used. The approved alternatives may be more expensive than other options and would have a considerable effect on your budget if they were initially priced incorrectly.


There are many factors to consider when deciding if you need a quantity surveyor for your building project. By weighing the pros and cons, you can make a more informed decision about whether or not this professional is right for you. If you decide that a quantity surveyor is right for your project, be sure to research and interview several candidates to find the right one for your needs.