Requirements Specification
A requirements specification is a document that describes the client's requirements and expectations for a project. It forms the basis for subsequent proposal generation by potential contractors and ensures that all stakeholders have a common understanding of the project.
What is a Requirements Specification?
A requirements specification is a document that describes the client’s requirements and expectations for a project. It forms the basis for subsequent proposal generation by potential contractors and ensures that all stakeholders have a common understanding of the project.
The requirements specification is particularly common in mechanical and plant engineering, software development, and construction, where it is also referred to as a bill of quantities (BoQ).
Who Creates the Requirements Specification?
Typically, a requirements specification is created by the client, as they best understand their goals, requirements, and framework conditions. In some cases, it is developed in collaboration with the contractor. This can lead to a technically superior solution but also carries the risk that the service provided later may not fully meet the original requirements.
When is a Requirements Specification Created?
The requirements specification is developed in an early phase of project planning – during requirements definition. In addition to the client, stakeholders, specialized departments, and the project management team are often involved in its creation.
A good requirements specification follows the SMART principle:
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- Time-bound
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- Specific
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- Measurable
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- Achievable
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- Relevant
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- Time-bound
Typical Content of a Requirements Specification
A structured requirements specification includes, among other things:
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- Project Description: Definition of the product, system, or project
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- Requirements: Functional & non-functional requirements (e.g., features, standards)
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- Framework Conditions: Legal, technical, and organizational specifications
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- Contractual Aspects: Partial services, warranty, risks
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- Contractor Prerequisites: Certifications, experience
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- Project Management Guidelines: Documentation, controlling, milestones
Where is a Requirements Specification Used?
Requirements specifications are common in many industries, including:
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- Software Development
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- Product Management
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- Construction and Real Estate Projects
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- System and Plant Engineering
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- Technical Services
How Do I Write a Requirements Specification?
Creating a requirements specification requires a systematic and methodical approach. It serves not only as a project document but also as a basis for communication and a contractual document. Advantages:
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- Quality Assurance: Clear requirements minimize errors
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- Communication: Basis for future contracts
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- Transparency: All stakeholders work towards a common goal
Although its creation is often complex, the investment pays off in the long run through structured implementation and minimized friction.
Requirements Specification Template
You can find a template for creating a requirements specification here: pmToolfinder. The platform offers practical templates and assistance for selecting and implementing suitable project management tools.