Ben SnapeA design responsibility matrix records who is responsible for each design element or deliverable on an architecture or construction project. It helps the architect, engineers, consultants and contractor see where their work starts, where it ends and where coordination is needed.
For example, the team might record who produces the structural drawings, who provides the architectural information they depend on and who reviews the coordinated package. Agree the scope with the people doing the work, then review it when appointments, project stages or deliverables change.
A RACI matrix answers a related question: who does the task, who is accountable, and who must be consulted or informed? The RACI example below is a way to record project roles. It does not replace a detailed allocation of design deliverables or the scope agreed in project appointments.
Once the team has agreed those responsibilities, PlanMan’s features can help you keep the related project tasks and records together.
Key components of a responsibility matrix
A responsibility matrix is made of:
Tasks or deliverables – specific activities, phases, or outputs of the project (e.g., schematic design, construction drawings, permitting, site supervision).
Roles & stakeholders – individuals, teams, or entities involved, such as project architect, structural engineer, client, interior designer, or any other co-consultant.
Responsibility Levels – typically defined using RACI or similar frameworks:
- Responsible (R): the person or team executing or completing the task.
- Accountable (A): the person ultimately called to answer for the task’s completion and quality (usually one person per task).
- Consulted (C): individuals or groups whose input or expertise is necessary.
- Informed (I): those who need to be updated on progress or decisions but are not directly involved.
Below is a simplified example of a RACI responsibility matrix for a typical architectural project:
| Task/Phase | Project Architect | Project Manager | Structural Engineer | Client | Contractor |
| Conceptual Design | R | A | C | C | I |
| Schematic Design | R | A | C | C | I |
| Design Development | R | A | R | C | C |
| Construction Drawings | R | A | R | I | C |
| Permitting | C | R | C | I | I |
| Construction Administration | C | R | C | I | R |
| Site Inspections | R | A | C | I | R |
| Project Closeout | C | R | I | A | R |
Benefits of using responsibility matrices in architecture firms
A responsibility matrix clearly defines who is responsible for each task, which reduces confusion and overlap. Someone is accountable for each deliverable, and that makes communication clearer – you always know who needs to be consulted or informed.
Responsibility matrices minimize disputes by setting expectations upfront.
In terms of project management, a responsibility matrix helps track progress and ensures all tasks are covered across project phases.
How to create a responsibility matrix
Identify tasks: break down the project into phases or deliverables (e.g., site analysis, design phases, construction oversight).
List stakeholders: include all relevant parties (internal team members, consultants, clients, contractors). Define when and how clients are involved (e.g., approvals, reviews).
Assign roles: use RACI or a custom framework to assign responsibilities for each task. Interdisciplinary coordination matters in architecture, so clarify responsibilities among architects, engineers, landscape designers, and other consultants. Specify contractor duties during construction and closeout.
Review and share: validate the matrix with the team and distribute it to all stakeholders.
Update as needed: revise the matrix if project scope, team, or tasks change.
Keep in mind:
- The matrix should be tailored to the project’s size, complexity, and team structure. Smaller projects may need simpler matrices, while large projects (e.g., commercial or institutional) require detailed ones.
- Regular updates are crucial as roles may shift during the project lifecycle.
- Agree the allocation with your co-consultants and check it against the scope recorded in each project appointment.
Top responsibility matrix frameworks in architecture
Architects often use several other frameworks similar to RACI (Responsible, Accountable, Consulted, Informed) to define roles and responsibilities in a responsibility matrix for architecture firms or other project-based environments.
These frameworks provide alternative ways to clarify tasks, improve collaboration, and accountability.
Below are the key frameworks similar to RACI, along with their structure and use cases – you might pick one that makes more sense for your practice.
RASCI
This is an extension of RACI with an additional role.
The roles are: responsible (R), accountable (A), supportive (S) – provides assistance or resources to the responsible party, consulted (C), informed (I)
The RASCI matrix is useful in architecture projects with complex teams (e.g., large commercial projects) where support roles, such as junior architects or external consultants, need to be explicitly defined.
RACI-VS
This matrix adds two extra roles to RACI: verifier (V) to review or validate the work, and sign-off (S) to approve the final deliverable.
RACI-VS is Ideal for architecture firms working on projects requiring strict quality control or regulatory compliance (e.g., permitting or BREEAM certification), where verification and approvals are critical.
RACIO
This framework adds an “Omitted” role to RACI to explicitly exclude certain stakeholders.
RACIO is helpful in large architecture projects with many stakeholders (e.g., mixed-use developments) to avoid confusion by clearly stating who is not involved in specific tasks.
DACI
DACI focuses on decision-making rather than task execution and is often used in collaborative environments. Driver (D): is the one who leads the task or decision process (similar to Responsible).
DACI is suited for architecture firms during phases requiring critical decisions, such as client approvals for design concepts or material selections.
ARCI
A reordered version of RACI, sometimes used interchangeably. A stands for “Accountable”.
ARCI is used in firms that prefer to emphasize accountability first, often in smaller projects where hierarchy is clear.
RAPID
This is a more detailed framework developed by Bain & Company, focusing on decision-making and execution.
The roles are:
- Recommend (R) – proposes a course of action;
- Agree (A) – must agree to the recommendation before proceeding;
- Perform (P) – executes the decision or task;
- Input (I) – provides data or expertise;
- Decide (D) – makes the final decision.
RAPID is best for complex, high-stakes architectural projects (e.g., infrastructure or institutional projects) where decisions involve multiple stakeholders, such as government agencies or funding bodies.
LRC
LRC is a simpler responsibility matrix focusing on leadership and contribution.
The roles are: leader (L) – owns and drives the task; responsible (R) – executes the task, and contributor (C), which supports or provides input.
LRC is useful for smaller architecture firms or projects with fewer stakeholders, where a simpler matrix is enough.
MOCHA
MOCHA is a responsibility matrix that emphasizes clarity in collaborative environments, and it’s often used in creative industries.
The roles are:
- Manager (M) – assigns tasks and ensures completion.
- Owner (O) – accountable for the task’s success.
- Contributor (C) – provides input or support.
- Helper (H) – assists with specific tasks.
- Approver (A) – signs off on deliverables.
MOCHA fits architecture firms working on creative or iterative projects (e.g., boutique or experimental designs) where collaboration and approvals are key.
Choosing the right responsibility framework for your architecture firm
While deciding on the responsibility matrix to be used in your project management, pay attention to the following:
Project size and complexity
Use RACI or LRC for small residential projects; RAPID or RASCI for large commercial or public projects.
Team structure
MOCHA or DACI works well for creative or collaborative teams; RACI-VS works well for projects with strict compliance needs.
Stakeholder Involvement
RACIO or RAPID for projects with many external stakeholders (e.g., clients, regulators).
Decision vs. task focus
DACI or RAPID for decision-heavy phases (e.g., client approvals); RACI or RASCI for task execution.
Many firms adapt these frameworks to their needs, combining elements (e.g., adding a “Support” role to RACI-VS).
Create the matrix in a spreadsheet such as Excel or Google Sheets, then keep the agreed file with the project documents in PlanMan.
PlanMan is an online project management solution designed specifically for architects, town planners, and technical consultancies.
Keep your responsibility matrix with the project documents in PlanMan. Assign tasks to the relevant team members and use the project records to follow up on progress.
Keep the agreed responsibilities alongside project tasks, documents and communications. Use those records to check progress and raise questions when an allocation is unclear.
Choose the detail of the matrix to suit the project and the people who need to use it.
Keep design authoring, BIM coordination and contractual appointments in the appropriate tools and processes. PlanMan holds the related practice records; it does not replace those specialist workflows.