IDPX · Professional practicePublished

Interior Design Professional

The Interior Design Professional Exam assesses professional practice: business and project management, contracts, codes and regulatory coordination, ethics and professional responsibility.

Content areas and weightings below follow our own curriculum structure. Refer to the current CIDQ blueprint on cidq.org for the official content areas and weightings before you sit the examination.

  • Published lessons across every blueprint content area
  • Practice questions with explanations and references
  • Included in membership at no extra cost

Interior Prep Studio is an independent study provider. It is not affiliated with, endorsed by, or licensed by CIDQ. Content areas and weightings are published by CIDQ and may be revised; always confirm the current blueprint before you sit the examination.

90 published lessons7 modules across 6 content areas.
9 full-length timed exams900 practice questions and 1035 timed-exam questions — 1935 study questions in total.
Study Readiness by content areaStudy Readiness by content area, updated as you practise.

How published lessons map to the blueprint.

Each content area below shows its blueprint weighting alongside the lessons that are published and available to study today. Lessons still in draft or under subject-matter review are not listed.

Feasibility Studies

17%

14 published lessons

  • Translate client goals into feasibility criteria
  • Establish the reliability of existing information
  • Separate zoning, occupancy, and building-code questions
  • Recognize life-safety implications in an existing building
  • Bring energy and operating requirements into feasibility
  • Test area requirements against the measurement basis
  • Plan due diligence and specialist investigations
  • Distinguish funding availability from a project budget
  • Map stakeholders and decision rights
  • Use participatory research without confusing preferences with evidence
  • Define the project team before assigning tasks
  • Coordinate an owner-appointed consultant
  • Match staffing and review capacity to project risk
  • Write a defensible feasibility recommendation

Scheduling and Budgeting

17%

14 published lessons

  • Build a dependency-based project schedule
  • Find the critical path rather than the longest single task
  • Understand float and the limits of schedule flexibility
  • Work backward from delivery and installation
  • Make approval calendars visible
  • Plan occupied renovations and shutdowns
  • Calculate staffing effort without confusing it with duration
  • Choose an estimating method suited to the information
  • Separate hard costs, soft costs, and owner costs
  • Distinguish allowances from contingencies
  • Read commitments, forecasts, and cash flow
  • Account for market changes and quotation conditions
  • Use value engineering without stripping required performance
  • Reconcile changes across budget and schedule

Contracts, Procurement, and Permitting

28%

22 published lessons

  • Distinguish qualifications requests from proposals
  • Write a proposal that can become a clear agreement
  • Control scope, exclusions, and additional services
  • Read fee structures and reimbursable expenses
  • Recognize contract terms that require clarification or review
  • Separate authority to recommend from authority to commit
  • Understand insurance, bonds, and risk without treating them as substitutes
  • Compare project-delivery relationships
  • Prepare a coordinated bid package
  • Manage bidder questions and addenda consistently
  • Evaluate bids for scope as well as price
  • Evaluate alternates and reconcile bid allowances
  • Distinguish selection, award, and permission to proceed
  • Define furniture procurement roles
  • Check purchase orders against acknowledgments
  • Coordinate delivery, storage, and damage reporting
  • Review vendor performance and warranty conditions
  • Manage design, budget, and owner approvals separately
  • Identify the permit authority and submission responsibilities
  • Respond to permit comments with a traceable record
  • Control permit revisions during construction
  • Protect integrity in procurement and project commitments

Construction Process

21%

15 published lessons

  • Establish the construction-administration workflow
  • Write correspondence and meeting records that distinguish decisions
  • Use requests for information to resolve defined uncertainties
  • Schedule and route submittals before they become emergencies
  • Review shop drawings within the assigned scope
  • Read product data for the actual proposed configuration
  • Use samples, cutting approvals, and strike-offs
  • Set useful mockup acceptance criteria
  • Evaluate substitutions across performance, cost, and time
  • Prepare and evaluate a change proposal
  • Distinguish agreed changes from directives
  • Carry authorized changes into current construction information
  • Evaluate delay recovery without inventing entitlement
  • Manage unforeseen conditions without rushing to a conclusion
  • Resolve disagreements through the agreed process

Site Observation and Close-Out

17%

14 published lessons

  • Plan site observations around consequential work
  • Respond to site safety concerns within your role
  • Write objective field reports
  • Manage nonconforming work and verify correction
  • Coordinate inspections, tests, and hold points
  • Review payment applications using a consistent basis
  • Verify stored-material eligibility before including it in payment
  • Coordinate furniture receiving and installation close to completion
  • Distinguish substantial completion from final completion
  • Build and close a useful punch list
  • Separate permission to occupy from contractual completion
  • Coordinate commissioning and user training
  • Assemble records, manuals, and warranty information
  • Use post-occupancy evaluation to test outcomes

Course orientation and preparation

—%

11 published lessons

  • Your IDPX project-delivery map
  • Health, safety, and welfare in professional decisions
  • Read the question through authority, timing, and evidence
  • Read documents without inventing a universal hierarchy
  • Practice the question interface before timing yourself
  • Use diagnostics and readiness without mistaking them for a pass prediction
  • Build a sustainable study rhythm
  • Trace one decision through the whole project
  • Use full-length practice as evidence, not a prediction
  • Repair errors with a targeted review plan
  • Prepare for the appointment and keep the course in perspective

Weightings shown are the content-area weightings published in the current CIDQ blueprint for this examination. All study content is written in-house and is released only after the owner records a content confirmation. Anything not yet confirmed stays unpublished.

Study Readiness is an internal study-planning metric calculated from your activity and practice accuracy on this platform. It is not a CIDQ score, not a validated pass probability, and not a prediction of your exam result.

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