What is an interior designer license, and how do you get one?
Most states do not license interior designers. A small number regulate the profession, usually through a title act that restricts who may call themselves a registered or certified interior designer rather than restricting the work itself, and a very small number have practice acts that limit certain commercial work to registered designers. The national credential is NCIDQ certification from the Council for Interior Design Qualification, requiring accredited education, documented work experience and a three-part examination. Interior designers earn a $67,190 median.
- Complete an interior design degree, ideally CIDA-accredited.
- Document supervised work experience against NCIDQ's requirements.
- Pass the three NCIDQ examination sections.
- Register with your state if it operates a title or practice act.
- Maintain certification with continuing education.
How to get an interior designer certification
- 1
Complete an interior design degree
A programme accredited by the Council for Interior Design Accreditation is the smoothest route, because it reduces the experience hours NCIDQ requires. Other degrees can qualify but lengthen the path materially.
- 2
Document supervised work experience
Work under a senior or certified designer and record your experience against NCIDQ's categories, verified by your supervisor. This is the requirement that usually determines your timeline, not the examinations.
- 3
Pass the three NCIDQ sections
Sit Fundamentals, Professional Practice and the Practicum, which tests applied problem solving on building systems, life safety, egress, accessibility and construction documents. Sections are scored pass/fail in NCIDQ's testing windows.
- 4
Register with your state if it regulates
In the handful of jurisdictions with a title or practice act, apply to the board — usually on the basis of NCIDQ certification. In the rest of the country there is no registration to obtain, and certification is the credential clients rely on.
- 5
Maintain certification and specialise
Complete the continuing education NCIDQ requires, and consider LEED, WELL or healthcare design accreditation. Remember throughout that structural, egress and building-systems work must be sealed by a licensed architect or engineer regardless of your credentials.
Interior Designer certification requirements
Because the profession is unregulated in most states, the requirements come from NCIDQ rather than from a licensing board. To be credentialed you generally need:
Education
An interior design degree, with programmes accredited by the Council for Interior Design Accreditation carrying the most weight toward NCIDQ eligibility. Education and experience combinations are set by NCIDQ.
Documented experience
Supervised interior design work experience, verified by a supervisor, in the categories NCIDQ specifies. The required hours vary with your education level.
NCIDQ examination
Three sections covering fundamentals, professional practice and practicum, testing building systems, codes, life safety, contract documents and project delivery.
State registration where applicable
In the jurisdictions that regulate, registration with the state board on the basis of NCIDQ certification plus any state-specific requirement. Elsewhere no registration exists to obtain.
How much an interior designer certification costs
Costs are modest outside the degree itself. The lines to budget for:
The degree dominates the cost. NCIDQ publishes its section fees directly, and state registration fees apply only in the few regulating jurisdictions. Employers in commercial practice often fund examination fees because NCIDQ certification is a client requirement.
The interior designer certification exam
The NCIDQ examination has three sections. Fundamentals covers design theory, human factors, materials and finishes and is open to candidates earlier in their careers. Professional Practice covers project coordination, contract administration, codes and standards. The Practicum is applied: case-based problems on building systems, life safety, egress, accessibility and construction documentation, and it is the section that most distinguishes a certified interior designer from a decorator. Sections are scored pass/fail against a scaled standard and taken in NCIDQ's testing windows. There is no state examination for interior design in most of the country because there is no state credential to examine for.
How long it takes to get licensed
Six to eight years from starting the degree, with the documented experience requirement rather than the examinations setting the pace.
Interior Designer certification types: the full ladder
Progression here is by certification and, in a few places, registration, rather than by a licence ladder.
Design assistant
Supports project work under a senior designer while accumulating the experience NCIDQ requires.
Interior designer (uncertified)
Practises freely in most states, since the work is unregulated, but cannot use a protected designation where a title act applies.
NCIDQ certified interior designer
The national credential, evidencing accredited education, documented experience and success in the three-part examination.
Registered / certified interior designer (state)
The state designation in jurisdictions with a title act, generally granted on the basis of NCIDQ certification.
Practice-act registration
In the few jurisdictions with a practice act, the registration required before submitting certain commercial construction documents.
Specialist accreditations
LEED, WELL and healthcare design credentials that signal expertise in sustainability, wellness or clinical environments.
Architect collaboration
Not a credential but a legal reality: structural, egress and building-systems work must be sealed by a licensed architect or engineer.
Interior decorator vs Certified interior designer: interior designer certification
Interior Designer certification reciprocity between states
There is little to reciprocate, because most states do not regulate interior design at all. NCIDQ certification is national and travels without any transfer process, which is what makes designers mobile. Where a state operates a title or practice act, registration is state-specific and must be obtained from that board, usually on the basis of NCIDQ certification plus a fee. The constraint that applies everywhere is unchanged by any credential: work affecting structure, egress or building systems requires an architect or engineer's seal, so multi-state commercial practice is usually structured around that rather than around interior design registration.
Interior Designersalary & job outlook
Interior designers earn a median of about $67,190 per year ($32.31/hour), with commercial and healthcare practice and NCIDQ-certified designers earning above residential work. Employment is projected to grow 3.2%, with roughly 7,800 openings a year. See the full interior designer salary guide for pay by state, city and experience level.
Interior Designer certification requirements by state
The relevant question by state is whether any regulation exists at all, and if so whether it is a title act or a practice act.
Where no authority is named, that state does not regulate interior design and NCIDQ certification is a voluntary professional credential. Where a board is named, check whether the statute is a title act — restricting use of a designation — or a practice act restricting certain work. Regardless of state rules, work affecting structure, egress or building systems requires an architect or engineer's seal.
Browse all state guides
Interior Designer certification FAQs
Council for Interior Design Qualification (NCIDQ) · Council for Interior Design Accreditation (CIDA) · U.S. Bureau of Labor Statistics, OEWS May 2025 (27-1025) · BLS Occupational Outlook Handbook (Interior Designers). Requirements and fees are set per state and change, confirm with your state board before applying.
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