Decision making units in the construction industry
[edit] Introduction
A decision-making unit (DMU) is a team of people within an organisation who play a role in the business-purchase decision-making process for products and services. It is sometimes referred to as the ‘buying centre’ of an organisation.
The term decision-making unit originates in B2B marketing but has now spread into consumer and service applications. .
Typically, a decision-making unit may comprise:
- Specifiers – usually define the sort of product that is required, possibly using broad-brush-stroke outlines.
- Influencers – usually have a persuasive role in the decision-making process. They can set preconditions which may be as a result of their knowledge and experience. They may be consultants employed by the organisation to help the decision-making process. Informal influencers can include acquaintances, friends and family members.
- Buyers – responsible for purchasing, sourcing and negotiating with suppliers.
- Gatekeepers – usually search for information, determine what type of information will be delivered to certain players and pass it on to decision makers further up the line. Can strongly influence the decision-making process.
- Deciders – e.g senior managers who have the final say, make the final deal, ultimately responsible for choosing the supplier or the decision, placing the order having reviewed information passed on from those further down the line.
- Users – these can be both employees and customers. Because they use the goods and services, their feedback can exert influence on the specification of future products.
Not all of the above roles will be involved in some decisions and it is also possible that one person may perform more than one role. Decision-making powers may not be evenly spread throughout the DMU: some may have more authority than others
[edit] The construction DMU
The typical DMU in the construction sector is more complex than those in B2B markets. This is usually because the team responsible for designing, selecting, buying and installing products is usually specially compiled for a single project.
The key players in a construction-sector DMU may include:
- Client: A construction client (e.g property developer) may have some or total influence on product selection due to various factors e.g prestige or existing supply arrangements.
- Architect: Usually initiates the specification process. Combines various factors such as the needs of the client, building performance criteria, regulations, risks, operational needs, sustainability and so on.
- Engineer: Often provides information on new technology and designs and specifies specialist products such as steel and concrete, types of bolt, rebar and so on.
- Quantity surveyor: May make product recommendations and can be found at different roles in the construction process e.g client representation, project manager, contractor, specification writing, etc. May also oversee value for the client.
- Main contractor: In traditional forms of contract, the main contractor typically has limited influence on product selection. However, in design and build and other forms, the contractor may influence or direct the architect’s and engineer’s product selection. The contractor may have their own complete DMU with members who perform the decision-making-unit roles listed above
- Specialist supplier: May advise the architect and client on design and may make the final decision on product selection for a performance specification
- Facilities manager: The facilities manager’s experience plays an important role in product selection in relation to maintenance and operation and lifetime operating costs.
- Other: Other contributors may include stakeholders and third parties.
[edit] Related articles on Designing Buildings
- Benchmarking.
- Best value.
- Budget.
- Decision maker.
- Delegated authority.
- Integrated project team.
- Investment decision maker for building design and construction
- Leverage.
- Market value.
- Overcoming difficulties in value management.
- Public procurement.
- Senior responsible owner.
- Specification.
- Stakeholders.
- Value added.
- Value engineering.
- Value management.
Featured articles and news
Building Safety recap January, 2026
What we missed at the end of last year, and at the start of this...
National Apprenticeship Week 2026, 9-15 Feb
Shining a light on the positive impacts for businesses, their apprentices and the wider economy alike.
Applications and benefits of acoustic flooring
From commercial to retail.
From solid to sprung and ribbed to raised.
Strengthening industry collaboration in Hong Kong
Hong Kong Institute of Construction and The Chartered Institute of Building sign Memorandum of Understanding.
A detailed description fron the experts at Cornish Lime.
IHBC planning for growth with corporate plan development
Grow with the Institute by volunteering and CP25 consultation.
Connecting ambition and action for designers and specifiers.
Electrical skills gap deepens as apprenticeship starts fall despite surging demand says ECA.
Built environment bodies deepen joint action on EDI
B.E.Inclusive initiative agree next phase of joint equity, diversity and inclusion (EDI) action plan.
Recognising culture as key to sustainable economic growth
Creative UK Provocation paper: Culture as Growth Infrastructure.
Futurebuild and UK Construction Week London Unite
Creating the UK’s Built Environment Super Event and over 25 other key partnerships.
Welsh and Scottish 2026 elections
Manifestos for the built environment for upcoming same May day elections.
Advancing BIM education with a competency framework
“We don’t need people who can just draw in 3D. We need people who can think in data.”
Guidance notes to prepare for April ERA changes
From the Electrical Contractors' Association Employee Relations team.
Significant changes to be seen from the new ERA in 2026 and 2027, starting on 6 April 2026.
First aid in the modern workplace with St John Ambulance.
Solar panels, pitched roofs and risk of fire spread
60% increase in solar panel fires prompts tests and installation warnings.
Modernising heat networks with Heat interface unit
Why HIUs hold the key to efficiency upgrades.

























