This blog provides a brief introduction to some of the key decision makers and influencers in the construction team. Looking at what challenges are of importance to them. Providing guidance on what drives product specification, by looking at how each individual specifier is influenced by key factors such as value, design quality, sustainability.

Further information on each of the construction decision makers can be found in our Construction Persona series.

The Construction Client

In construction the end customer, or Client, will have varying levels of influence on product selection. Clients with large property portfolios will often indicate preferred products. Large property portfolio Client’s wish to ensure that the products selected will project the right image for their company and meet their safety and performance standards, which may be higher than National Standards. They may insist on Prescriptive Specifications for products which might impact upon the operating costs of their buildings.


  • Health and safety
  • Build quality
  • Sustainability
  • Operational efficiencies
  • Health and Wellbeing

>>>Find out more. Get Understanding the Construction Client now>>>

The Architect

The Architect develops the buildings’ design, taking the Client’s brief and combining it with the advice of the Specialist Consultants. This is then developed to meet the requirements of the Building Regulations and increasingly sustainability.

Architects have significant involvement in product selection. Provide tools, such as pre-written specification documents, to make it easy for the Architect to specify your product.

The Architect has the potential to act as the node between the Client, Main Contractor, Specialist Contractor and many others to ensure the right products are selected and installed correctly. The introduction of BIM is further encouraging this culture.


  • Safeguarding design
  • Sustainability
  • Building regulations and legislation
  • Client management

>>>Find out more. Get Understanding the Architect now>>>

The Interior Designer

The interior designer will provide advice and create designs for the layout and configuration of the internal space of a building or structure. They will often take responsibility for first fix installation such as kitchens, bathrooms and surfaces. Interior designers make interior spaces functional, safe, and beautiful by determining space requirements and selecting decorative items, such as colours, lighting, and materials.

They work closely with architects, structural engineers, mechanical engineers, and builders to determine how interior spaces will function, look, and be furnished.


  • Building productivity
  • Spatial design
  • Interior performance and occupier experience
  • WELL Building Standard or BREEAM

>>>Find out more. Get Understanding the Interior Designer now>>>

The Quantity Surveyor

The QS could work for either the client or the contractor, in an office or on site. They are involved in a project from the start, preparing estimates and costs of the work. The Quantity Surveyor can be found in many different roles on the construction project: representing the Client, acting as Project Manager, writing specifications, giving advice on sustainability. Occasionally the QS makes product recommendations but more often he/she is overseeing choices to ensure the Client gets value.


  • Quantity / stock monitoring
  • On site efficiencies
  • Product availability
  • Client management

>>>Find out more. Get Understanding the Quantity Surveyor now>>>

The Mechanical & Electrical Engineer

M&E Engineers are problem solvers. The role of the M&E Engineer is to design, install and maintain the services in new or existing buildings. There is a growing emphasis on sustainability and M&E or Building Services Engineers are at the cutting-edge of designing, developing and managing new technologies that help to reduce the carbon emissions of a building.

Engineers often prefer to work with performance specifications, generally feeling that they can specify the key criteria they require while giving the sub-contractor the flexibility. But they will use a brand or nominated specification if they consider it justified. Very often they have to sign-off the sub-contractor’s installation, carrying the responsibility for any failure, so they are vigilant about product selections.


  • Verification of product performance
  • Correct installation and use
  • Futureproof designs
  • Sustainability
  • Health & Wellbeing

The Main Contractor

The Contractor oversees and manages the construction of the building for the Client, following the Architect and Engineers’ designs. The work is delivered under a contractual agreement. The Main Contractor will select Sub-contractors based on their capability, availability and price.

If a project is Design & Build or PF2, the Contractor will be directing the Engineer and Architect’s product selection. They will have in-house decision makers interpreting the Client’s needs and briefing the specifiers.

They need to know that building work will not be delayed by lack of product availability and that product cost remains within the estimate, so they can remain profitable.


  • Achieving project schedules
  • Meeting client needs
  • Remaining profitable

>>>Find out more. Get Understanding the Main Contractor now>>>

The Specialist Sub-Contractor

Sub-Contractors can be anything from an individual self-employed person e.g. a plumber carrying out work for a building Contractor – to a large national organisation. There are three main types of Sub-Contractor:

  • Domestic Sub-Contractor: A Sub-Contractor selected and appointed by the Main Contractor.
  • Nominated Sub-Contractor: A Sub-Contractor selected by the Client to carry out an element of the works.
  • Named Sub-Contractor: A Sub-Contractor for a particular package selected from a list of acceptable Sub-Contractors provided by the Client.

The majority of specialist firms now post better margins than Main Contractors, underlining how much strength specialist businesses have today. One potential game-changer is the fact that Clients are increasingly engaging directly with tier two suppliers, bypassing tier one Contractors altogether.


  • Contract terms / penalties
  • Procurement / Supply chain
  • Main Contractor relationship / Client relationship

>>>Find out more. Get Understanding the Specialist Sub-Contractor now>>>



It is important for the Specification Salesperson to build relationships with as many key players in the Decision Making Unit, getting to know the inter-relations on each project.  The Architect and Engineer are no longer the primary influencers. The Main Contractor, Specialist Contractor, Interior Designer, M&E Engineer and Quantity Surveyor can all influence product selection. And then of course there is the Client, for whom the building is being constructed. For marketing creating construction personas helps understand the motivation behind buyer decisions, giving an understanding of the challenges and goals faced by the decision maker. Providing valuable insight into why construction professionals are specifying your product, or why they are choosing your competitor. Taking time to understand each customer type is also a great way to inform your communications strategy.

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