About Us

Thomas Callum Associates are a team of highly skilled Quantity Surveyors, Estimators and Construction Consultants.

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Employer's Agent

The term 'Employer's Agent' is used to describe an agent acting on behalf of the client as the contract administrator for a specific form of contract known as design and build (See Contract Administrator details).  

Quantity Surveying

We can assist you with Quantity Surveying.

Contract Administration

In the construction industry, the Contract Administrator is the individual responsible for administering the construction contract. The purpose of employing a construction professional, is to give the employer the benefit of that professional's skill and experience.

Take Off & Builders Bill of Quantities

A bill of quantities (sometimes referred to as BoQ) is a document prepared by a Quantity Surveyor and provides measured quantities of each item detailed in the drawings and specifications.


Prepare documentation to enable detailed enquiries to be received from your supply chain. Equally we can offer a number of preferred suppliers in a number of areas.


Our estimating service is user friendly and versatile. Our professional quotes can help you become more competitive, enabling you to win more work.

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