What does an interior architect actually do?
An interior architect plans, structures and transforms interior spaces from concept to construction site. The work covers space planning, technical drawings, material selection, coordination with contractors and compliance with building constraints. It is technical and structural work, not styling.
The daily reality mixes creativity and rigour. You measure existing spaces, produce dimensioned plans, model layouts in 3D, and translate a client’s needs into a buildable project. A kitchen that flows, a shop that guides customers, an office that reduces noise : each answer is technical before it is beautiful.
Where a decorator stops at surfaces and objects, an interior architect moves walls, redraws circulation and manages the interior renovation from first sketch to final invoice. That distinction matters legally and commercially in Belgium.
Typical deliverables include a needs brief, dimensioned plans, a 3D visual, a materials schedule and a coordination plan for tradespeople. On residential projects, the client hires you to avoid costly mistakes ; on professional spaces, to optimise every square metre.
Interior architect versus decorator : the distinction that matters
An interior architect handles structure, layout and technical execution, while a decorator focuses on finishes, furniture and ambiance. The two skills overlap in architecture et décoration projects, but only structured design training gives you the technical command to reshape interior spaces safely and legally.
Clients often confuse the two, then discover the gap when a load-bearing wall enters the conversation. An interior architect reads the building, checks what can be removed, obtains the necessary permits and coordinates the trades who execute the work. That is the concrete value they pay for.
In practice, many professionals offer both interior decoration and full space planning. The strongest careers are built on mastering the architectural core first, then layering the aesthetic design skills on top. A solid portfolio shows both sides working together.
What training is required to become an interior architect in Belgium?
Becoming an interior architect in Belgium requires a recognised higher-education programme in interior design or interior architecture, typically a bachelor-level course lasting several years. The curriculum must cover technical drawing, 3D modelling, materials science and project management, not only aesthetics, to prepare graduates for real studio work.
Talent alone rarely opens doors. Belgian and international clients expect a diploma, a methodology and a portfolio. A serious design education combines studio practice, software mastery and real project simulation so you graduate ready to work, not just to sketch.
The core skills a programme should build
A credible curriculum develops four pillars : space planning and technical drawing, 3D visualisation, knowledge of materials and construction, and client-facing project management. These skills separate a hobbyist from a hireable professional.
Software fluency is non-negotiable. AutoCAD, SketchUp and rendering tools are the working language of the studio. A programme that sidelines them leaves graduates unprepared for day one in a professional practice.
Training at CAD in Brussels
CAD, the College of Art and Design in Brussels, runs a professional interior design and interior architecture programme aimed at students and career changers. The teaching connects design methodology to industry practice through studio projects that mirror real residential and commercial briefs.
Beyond interior architecture, CAD offers related tracks in design, art direction, digital design, motion design and 3D design. That range lets you build specialist interior expertise while keeping adjacent career paths open.
Explore our Interior Design Programme
How much does it cost to hire an interior architect in Belgium?
In Belgium, an interior architect charges using one of three billing models : an hourly rate for short consultations, a fixed project fee for a defined scope, or a percentage of the total works budget for full renovations. VAT applies on top of all figures. The right model depends on project complexity and the level of site supervision required.
Three billing models coexist. A percentage of works suits full interior renovation projects where the architect’s involvement spans months. A hourly rate fits a focused design consultation or a single technical review. A fixed fee gives clients budget certainty on a clearly scoped deliverable such as one room.
The fee level depends on project complexity, surface area and whether execution follow-up is included. A layout study for a single apartment costs significantly less than a turnkey transformation with contractor coordination across multiple trades. Always confirm in writing what the quote covers.
| Billing model | Indicative range (excl. VAT) | Best suited for |
|---|---|---|
| Hourly rate | 60 to 120 euros / hour | Advice, short consultation |
| Fixed project fee | 500 to 5,000 euros and above | Defined single-space projects |
| Percentage of works | 8 to 15 percent | Full renovations with site follow-up |
These ranges are indicative and vary by region, experience and project scope. An interior architect with a strong reputation and a specialist portfolio commands fees at the upper end of each bracket.
What salary can an interior architect expect?
Salary in interior architecture varies significantly with employment status, specialisation and experience. Salaried designers in an agency earn a stable monthly income ; independent professionals set their own rates and can earn more per project, but carry client acquisition, invoicing and professional liability themselves.
Employment status shapes the financial reality from day one. An agency position provides a structured salary, access to established projects and a fast track to portfolio depth. Going independent means higher potential income per project, but also unpaid prospecting time and business administration.
Specialisation is the clearest lever for higher earnings over time. Professionals who develop expertise in commercial fit-outs, sustainable renovation or high-end residential work can justify premium fees. Mastery of advanced 3D visualisation also opens a parallel revenue stream : many architects sell renders and virtual walkthroughs as standalone services.
The usual path is to start salaried, build a client book over two to four years, then transition to independent practice from a position of strength rather than necessity.
What qualifications and portfolio open the profession?
The strongest entry profile combines a recognised diploma in interior design with a portfolio demonstrating real project work : dimensioned plans, 3D renders, before-and-after transformations and a written note explaining how each design constraint was resolved. Employers and clients judge both the diploma and the evidence of applied thinking.
Your diploma gets you the interview ; your portfolio wins the job. Include plans, 3D renders, before-and-after transformations and a short note on how you solved each constraint. Showing a problem and its resolution is more persuasive than a gallery of finished images.
Soft skills carry equal weight in practice. Clients hire designers who listen accurately, respect budgets and communicate clearly when a constraint forces a trade-off. A designer who explains options calmly retains clients through the inevitable friction of a construction site, which is where long-term reputation is built.
Career pathways after an interior design education
An interior design education leads to roles in design studios, architecture firms, retail and hospitality fit-out companies, or independent practice. Graduates with cross-disciplinary skills also move into 3D visualisation, set design, product design and art direction, extending their market beyond interior work alone.
Many graduates start salaried to build experience and contacts, then move to independent practice once they hold an established client base. Others specialise early : commercial hospitality interiors, healthcare environments and retail fit-outs each require distinct technical knowledge and offer distinct fee structures.
Cross-disciplinary training accelerates both paths. A designer fluent in digital presentation and motion tools pitches projects more persuasively, wins clients who compare multiple studios, and can diversify income through visualisation services between larger commissions.
Why choose CAD to train as an interior architect?
CAD is an international College of Art and Design based in Brussels, offering professional programmes in interior architecture and design. Its curriculum is structured around studio practice, real project briefs and direct feedback from practitioners, preparing graduates with a working portfolio and a transferable method, not only academic knowledge.
The Brussels location is a practical advantage. Students train in one of Europe’s most active design markets, with direct access to suppliers, studios and professional networks. Studio visits, guest critiques and live briefs turn classroom work into professional contacts before graduation.
The programmes are built on a project-based model : real briefs, real deadlines, real critical feedback. Graduates leave with a portfolio that demonstrates applied thinking across residential and commercial contexts, and a professional network built during the programme. For a career in architecture et décoration, that grounding shortens the gap between diploma and first paid project.
Frequently asked questions
What is the role of an interior architect?
An interior architect designs and reorganises interior spaces from concept to construction, handling space planning, technical drawings, material selection and coordination with contractors. The work is technical and structural, going well beyond decoration to make spaces both functional and aesthetically coherent.
What studies or training are required to become an interior architect?
You need a recognised higher-education programme in interior design or interior architecture, typically a bachelor-level course lasting several years. A structured programme such as the one at CAD in Brussels covers technical drawing, 3D modelling, materials and project management alongside design practice.
What is the average cost of hiring an interior architect?
In Belgium, fees vary by billing model : an hourly rate for short consultations, a fixed project fee for a defined scope, or a percentage of the works budget for full renovations. VAT applies on top. Always confirm in writing what the quote includes, particularly whether site supervision is covered.
What is the typical salary for an interior architect?
Salary varies with employment status and specialisation. Salaried designers in an agency earn a stable monthly income that grows with experience. Independent professionals set their own rates and can earn more per project, but carry client acquisition and business administration costs.
What qualifications should an interior designer have?
An interior designer should hold a recognised diploma in interior design, command professional software such as AutoCAD and SketchUp, and present a portfolio of real projects. Employers value demonstrated design skills, technical drawing ability and the capacity to manage a project from brief to delivery.
Key takeaways and next step
Three points to retain. First, an interior architect works on structure and layout, not only decoration : that technical scope defines the profession and its legal standing in Belgium. Second, entering the field requires a recognised design education and a portfolio of applied project work. Third, income grows with specialisation and reputation, whether salaried or independent.
If you want to turn a genuine interest in interior spaces into a profession with real earning potential, training is the concrete first step. Discover CAD’s interior architecture programme in Brussels and start building the skills, portfolio and network the market expects.