Interior Design Competitions in May 2026: Staircases, Train Cabins, and the Room as Architecture
Interior design at uni.xyz means interior architecture. This section is not about cushions, colour palettes, or finish schedules. It is the editorial home for briefs that treat the room as the smallest unit of architectural thought, where material, detail, light, and circulation at body scale carry the full argument. The lineage runs from Adolf Loos's Raumplan through every joint and hinge in Carlo Scarpa's Castelvecchio, to Lina Bo Bardi's SESC Pompéia, John Pawson's monastic minimalism, and Studio KO's material storytelling. If you are looking for a spatial design brief where a single 1:20 section can carry an entire idea, this is the section that takes that question seriously in May 2026.
What this section covers, and what it does not
- Covers: room-scale design, interior architecture, staircases, joinery, lighting, material palettes, luxury mobile interiors (trains, ships, aircraft), hospitality interior architecture, residential interiors at body scale, micro-architecture, renovation and fit-out briefs.
- Does not cover: whole-building commercial typologies (see retail and commercial architecture), whole-building offices (see workspace and office design), whole-building residential typologies (see residential and housing innovations), or product and industrial design at object scale (see product and industrial design).
Interior design competitions currently live in May 2026
- Ascend — Designing a staircase for a client · organized by UNI · submission closes August 1, 2026 · prize pool USD 7,000 · entry fee USD 50
- On Rail — Challenge to design luxury tourism on rails · organized by UNI · submission closes July 1, 2026 · prize pool USD 7,000 · entry fee USD 50
Interior design is interior architecture: reclaiming the discipline
The word "interior design" has been softened by three decades of lifestyle publishing into a synonym for styling. That is not what this section is about. When Adolf Loos argued in the early twentieth century that the interior volume precedes the plan, he was making the opposite claim: the room is not the residue of the building's perimeter but the thing the building is built around. Every serious interior architect since Loos has taken the same position. The room, not the facade, is where architecture is actually tested.
An interior architect thinks about how a hand touches a door handle, how light falls on a travertine floor at four in the afternoon, how a 45-degree joint in a walnut stair reads from two metres away and from twenty centimetres away. A decorator thinks about what colour the cushions should be. These are both useful disciplines. They are not the same discipline, and UNI runs competitions for the first one.
The Raumplan and its legacy: why Loos still matters
Loos's founding argument
Adolf Loos's Raumplan was the theoretical position that rooms in a house should vary in height, proportion, and spatial volume according to their programme, and that the plan of the building should emerge from those spatial decisions rather than constrain them. The Villa Müller (Prague, 1930), the Villa Moller (Vienna, 1928), and the earlier American Bar on Kärntner Strasse (Vienna, 1908) are the three canonical demonstrations of the idea. The American Bar is the purest case: eighteen square metres of onyx, mahogany, leather, and mirror that feel larger than many ballrooms because Loos designed the interior volume first and the exterior shell second.
Raumplan versus Plan Libre
Loos's Raumplan and Le Corbusier's plan libre are the two opposing positions that still structure interior design thinking nearly a hundred years later. The plan libre treats interior partitions as free-floating elements within a uniform structural grid; the Raumplan treats every room as a distinct spatial event. Most contemporary interior architecture competitions are Raumplan competitions, even when the authors do not know the term. If the brief asks you to think about a room as a volume with its own light, proportion, and atmospheric argument, you are operating inside Loos's tradition.
Josef Hoffmann and the total interior
At almost exactly the same time as Loos's American Bar, Josef Hoffmann and the Wiener Werkstätte were completing the Palais Stoclet (Brussels, 1911), the most ambitious total-interior project of the early modern period. Every handle, light fixture, wall panel, and piece of cutlery at the Palais Stoclet was designed by the Werkstätte. The total interior as architectural argument is a second, parallel lineage to the Raumplan, and it informs every contemporary brief that asks you to design the full material world of a room rather than just its geometry.
The canonical lineage of interior architecture every entrant should know
Eileen Gray, E-1027 and the unified practice
Eileen Gray's E-1027 (Roquebrune-Cap-Martin, 1929) is the first fully modernist house designed as a unified exercise in architecture, interior, and furniture by a single author. Her Room for a Man, exhibited at the 1923 Salon des Artistes Décorateurs in Paris, had already established her as the first interior architect to treat the room as an integrated spatial and material object. Tempe à Pailla (Menton, 1934) deepened the argument. Gray's work is the origin point for contemporary interior architecture as a discipline that refuses to separate the building from what happens inside it.
Carlo Scarpa: every joint is an argument
Carlo Scarpa is the canonical reference for interior architecture as a discipline of detail. The Castelvecchio Museum in Verona (1964), the Olivetti Showroom on Piazza San Marco in Venice (1958), the Brion Cemetery in San Vito d'Altivole (1978), and the Palazzo Abatellis renovation in Palermo (1954) together constitute the most rigorous demonstration in twentieth-century architecture of what it means to design the interior as a set of material propositions. Every threshold, every water channel, every bronze hinge at Brion is an argument about how metal meets stone, how old meets new, how the body meets the building. If you are entering an interior design competition and you do not know Scarpa's work in detail, you are not yet ready to compete.
Lina Bo Bardi: interior as social practice
Lina Bo Bardi's SESC Pompéia (São Paulo, 1977-86) is the most important interior architecture project of the second half of the twentieth century, and arguably the only one that treats the interior as a social and political instrument at the scale of a city block. The rough concrete, the timber walkways, the swimming pool with water that mirrors the sky, the deliberately unfinished surfaces: Bo Bardi refused the polish of bourgeois interior design and used interior architecture as a tool for reclaiming public life. Her MASP interiors (1968) and the Casa de Vidro (São Paulo, 1951) complete a body of work that should be read by every entrant who thinks interior architecture is decorative.
Luis Barragán: colour and light as interior architecture
Luis Barragán's Casa Barragán (Mexico City, 1948) and Cuadra San Cristóbal (1968) prove that colour and natural light can do the work that material and joint do in Scarpa's projects. Barragán used pink, ochre, and magenta not as decoration but as structural elements in the interior argument. His 1980 Pritzker acceptance speech remains one of the clearest statements of interior architecture as a spiritual discipline.
John Pawson: minimalism as interior philosophy
John Pawson's Calvin Klein flagship on Madison Avenue (New York, 1995) and the Novy Dvur Cistercian Monastery (Czech Republic, 2004) are the two poles of minimalist interior architecture as a coherent position. Pawson's book Minimum (1996) is the clearest theoretical statement of interior design as a discipline of subtraction. Reductive interior architecture is not austerity, it is editorial courage applied to material choice.
Contemporary interior architects worth referencing
- Kazuyo Sejima and SANAA — the continuous interior-exterior field and the near-absence of boundary conditions.
- Axel Vervoordt — wabi-sabi, aged materials, and time as an interior architecture medium. See Wabi Inspirations (2010).
- Studio KO (Karl Fournier and Olivier Marty) — the Yves Saint Laurent Museum in Marrakech (2017) as a reference for interior architecture as material storytelling.
- Vincent Van Duysen — Belgian restraint and tactile monochrome.
- Joseph Dirand — classical French proportion filtered through contemporary minimalism.
- India Mahdavi — colour as spatial punctuation, the direct contemporary inheritor of the Barragán position.
The staircase: the smallest unit of interior architecture
If you wanted to test whether a practice understands interior architecture, you would ask them to design a staircase. The staircase is where the body meets the building with zero margin for error. Every canonical interior architect has built one as their defining gesture. Loos's Kärntner Bar stair at the American Bar manages to feel monumental inside a space the size of a small corridor. Scarpa's Olivetti Showroom stair in Venice is a concrete cantilever so quiet you can miss it until you realise every step is a separate design decision. Tadao Ando's Koshino House stair (Ashiya, 1984) turns circulation into a ritual walk through light. OMA's Prada Epicenter stair in New York (2001) turns the shop itself into a performance space anchored on the stair. Zaha Hadid's Hoenheim-Nord tram station (Strasbourg, 2001) uses the moving body as the primary spatial instrument.
UNI's live brief: Ascend
Ascend is uni.xyz's current staircase design brief in this section. The prompt is simple and specific: design a staircase for a client. The prize pool is USD 7,000 with an entry fee of USD 50. Registration closes in late July and submissions are due 1 August 2026. Results are announced 2 September 2026, with a public voting window running through late August. Ascend is a deliberate test of whether contemporary interior designers can still design a stair the way Loos, Scarpa, and Ando designed theirs: as a single architectural gesture that carries the room's entire spatial argument.
Luxury mobile interiors: the forgotten discipline
Outside fixed architecture there is a parallel interior design tradition that most architecture schools ignore entirely: the luxury mobile interior. Train carriages, ocean liners, and passenger aircraft have been the proving ground for interior architecture since the late nineteenth century, and the rigour required to design a room that also has to move at 200 kilometres an hour is higher than the rigour required to design most buildings.
- The Orient Express (1883 onward) commissioned marquetry, glass, and upholstery from the best decorative artists of the Belle Époque. The original Lalique panels in the CIWL carriages are interior architecture at its most complete.
- Pullman carriages in North America defined the nineteenth-century luxury train interior as an architecture of joinery, compressed proportion, and daylight filtered through velvet.
- The RMS Queen Mary (Clydebank, 1936) was the most ambitious floating interior of the twentieth century: fifty-six different hardwoods, Art Deco murals commissioned from major British artists, and a public room that anticipates late-modernist lobby design.
- Raymond Loewy's Concorde cabin (1969) demonstrated that interior design at Mach 2 is still interior design. Every seat section, light, and surface was designed at 1:1 before a single prototype flew.
- The Japanese Shinkansen Gran Class cabin is the contemporary standard for how dense material choice and body-scale circulation work together in a moving interior.
- Norman Foster's Mercury high-speed train concept and the TGV Première carriages extend the lineage into the twenty-first century.
UNI's live brief: On Rail
On Rail is uni.xyz's current luxury train interior brief in this section. The prompt is to design the interior of a luxury rail tourism experience where the carriage itself is the destination. The brief treats the train as a piece of interior architecture that has to do everything a fixed hotel room does, inside a moving volume measured in single-digit square metres, across a journey measured in days. On Rail is the direct descendant of the Orient Express tradition and asks the entrant to prove that the Belle Époque standard still applies when the budget and weight constraints are contemporary.
Scale framework: where interior design lives on uni.xyz
- Object scale — a single product, piece of furniture, or lighting fixture. Handled in product and industrial design, not here.
- Room scale — interior architecture. Plans at 1:50, sections at 1:20, details at 1:5. This is where typology-interior-design lives.
- Building scale — whole-building residential, commercial, cultural, or institutional briefs. Handled in the appropriate building-scale typology sections.
- Urban scale — public space and urban design. Handled in public space and urban design.
If your project does not fit neatly into one of these scales, it is probably trying to do too much. The discipline of interior architecture begins with accepting that the room is a sufficient unit of ambition.
Core evaluation criteria for interior design competition entries
1. Material specificity
Every surface in an interior architecture entry must be named, sourced, and justified. Not "stone". Not even "travertine". Roman travertine from the Bagni di Tivoli quarries, vein-cut, honed finish. Jurors evaluating interior design competitions read material specifications the way a literary editor reads footnotes. Vagueness signals that you have not done the work.
2. Light modelling
Natural and artificial light should be treated with equal rigour. Your drawings should show where the sun enters the room at three specific times of day, where artificial light sources sit, what colour temperature they produce, and how shadows fall on the materials you have specified. A single lighting section showing the room at 10 a.m., 3 p.m., and 9 p.m. is often the most persuasive single drawing in the entire submission.
3. Circulation at body scale
How does a user move through the room? Where do they pause? Where do they look? Interior architecture is a discipline that takes the human body as its unit of measurement, not the 50-metre grid or the 6-metre structural bay. Draw the circulation as a sequence of body positions, not as a set of arrows.
4. Detail drawings
The 1:5 or 1:2 detail is the drawing where interior architecture is either proved or exposed. Junctions, joints, hinges, handles, edges, and material transitions are where jurors learn whether you can actually build the room you have drawn. Submit at least three detail drawings that could be handed to a joiner tomorrow morning.
5. Human factors
Ergonomics, touch, acoustic character, thermal comfort, air quality. These are not afterthoughts for an interior architecture jury; they are the basic qualifications for entry. Explain how the room will feel in winter at 8 p.m. and in summer at 2 p.m. Acknowledge the acoustic absorption coefficient of the surfaces you have specified.
6. The single-drawing test
If you had to reduce your entire entry to a single drawing, which drawing would you keep? Every serious interior architecture project has one drawing that carries the argument, usually a long section cut through the most spatially active part of the room. Identify that drawing early and make sure it is the strongest thing on your board.
How to draw for an interior design competition
Required deliverables at minimum
- Plan at 1:50 — showing the complete room or rooms with furniture, fittings, lighting positions, and material boundaries.
- Section at 1:20 — at least one long section and one cross section showing ceiling geometry, wall treatments, floor transitions, and any level changes.
- Detail at 1:5 (or 1:2) — three or more junctions, joints, or details that prove the buildability of the scheme.
- Material palette board — swatches or photographs of every named material with sources, finishes, and dimensions.
- Two atmospheric renders — one at daytime, one at night, both calibrated to show light mood rather than raw geometry.
- One hand sketch showing the body at scale, because a hand sketch is still the fastest way to prove you have thought about how a person inhabits the space.
- A short written description (300-500 words) naming your references, your material argument, and the single drawing that carries the idea.
How to prepare an interior design competition entry in four weeks
- Week 1 — concept and precedent research. Visit the site or build the digital model of the brief. Pull three canonical precedents from the Loos-Scarpa-Pawson lineage and identify what each one would teach you about this brief. Write a one-page manifesto for your scheme.
- Week 2 — spatial development. Build the plan and the long section. Test three variations of the key spatial move. Throw away two. Commit to the third.
- Week 3 — material palette and details. Choose every material. Draw every junction at 1:5. Render one atmospheric test image to calibrate the light.
- Week 4 — package the submission. Layout the boards, finish the renders, write the description, proofread twice, submit six hours before the deadline and never six minutes.
Canonical interior design and interior architecture awards to know
- Restaurant & Bar Design Awards (United Kingdom, established 2009).
- Frame Awards (Amsterdam, by Frame magazine).
- SBID International Design Awards (Society of British and International Interior Design).
- Andrew Martin Interior Designer of the Year.
- ELLE Decoration Design Awards.
- Dezeen Awards, interiors category.
- AIA Institute Honor Awards for Interior Architecture (United States).
- RIBA Regional Awards, interior category.
- World Interior News Awards.
Knowing these programmes is useful context, but most of them reward completed built work by practising studios. Competition-based briefs like Ascend and On Rail on uni.xyz sit earlier in the pipeline: they reward the idea and the drawing before the budget exists to build it.
Frequently asked questions about interior design competitions
What is the difference between interior design and interior architecture?
Interior architecture is a spatial, structural, and material discipline that treats the room as the smallest unit of architectural thought. Interior decoration is a surface discipline that treats the room as a canvas for styling, finishes, and furnishings. Both are legitimate; they require different skills and reward different drawings. UNI's Typology: Interior Design section runs briefs for interior architecture, not decoration. If your entry is primarily about furniture selection and colour schemes, you are in the wrong section.
Are interior design competitions worth entering as an architect?
Yes. Some of the most important architects in history, including Loos, Scarpa, and Bo Bardi, treated interior architecture as the central problem of the discipline rather than a consolation prize. Entering an interior design brief forces you to work at a scale (1:50, 1:20, 1:5) that building-scale architects often lose the habit of. It is one of the fastest ways to sharpen your detail drawing and your material specification skills.
Do I need an interior designer's licence to enter?
No. uni.xyz competitions are open to architects, interior designers, architecture and interior design students, furniture designers, and anyone working at spatial scale. Licensure is not a requirement for entry. What juries care about is the quality of the drawings, the rigour of the material argument, and the clarity of the single strongest idea.
What deliverables do interior design competitions typically require?
A plan at 1:50, a section at 1:20, at least one detail at 1:5, a material palette board, two atmospheric renders, one hand sketch, and a short written description of 300-500 words. Exact requirements vary by brief. Always read the specific submission requirements before starting the final layout.
How do I render an interior convincingly for a competition jury?
Render the light, not the geometry. A good interior render shows how a specific material reads under a specific light condition at a specific time of day. Generic daylight renders with muted grey walls read as placeholder. Pick the hour of the day when the room you are designing is most alive, and render that exact moment. A single atmospheric render at the right hour beats four generic renders every time.
Can students enter interior design competitions on uni.xyz?
Yes, and they should. Interior design briefs are among the best entry points to competition culture for architecture and interior design students because the scope is constrained, the deliverables are manageable inside a semester, and the judging criteria reward craft over masterplanning ambition. Many established interior architects, including several in the canonical lineage above, won their first recognition from student interior briefs.
What is a staircase design competition and why does UNI run one?
A staircase design competition asks you to design a single vertical circulation element as if it were the entire architectural argument. It is a test of whether you can design interior architecture at body scale, which is the scale at which every great interior architect from Loos to OMA has ultimately been measured. UNI runs Ascend because the staircase is the cleanest possible test of whether an entrant understands interior architecture as a discipline rather than as styling.
Is luxury train interior design a recognised discipline?
Yes, and it is older than most architectural disciplines still practised today. The CIWL Orient Express carriages of the late nineteenth century, the Pullman era in North America, the Queen Mary in the 1930s, and Raymond Loewy's Concorde cabin are all first-order examples of interior architecture applied to moving structures. Contemporary luxury rail tourism has revived the tradition, and UNI's On Rail brief is the current entry point for architects and interior designers who want to work in that lineage.
How do juries evaluate material choices in interiors?
Juries look for three things. First, specificity: named, sourced, dimensioned materials rather than generic descriptors. Second, coherence: do the materials talk to each other as a palette or are they random selections? Third, buildability: does the detail drawing prove that the material can be joined to its neighbours without a magical joint? Entries that fail on any of these three read as unfinished regardless of how strong the concept is.
How do I reference the Carlo Scarpa lineage in my entry without copying it?
Extend the argument, do not copy the vocabulary. Scarpa's contribution was not the specific hinge he designed at Brion but the discipline of treating every material transition as a design decision. A contemporary entry that thinks every joint with the rigour Scarpa brought to his joints is referencing the lineage correctly. An entry that copies Scarpa's signature bronze details and 45-degree joints is just pastiche. Reference the thinking, not the forms.
Recommended further reading
- Adolf Loos, Ornament and Crime (1908) and the writings collected in Spoken Into the Void. The theoretical foundations of modern interior architecture.
- Carlo Scarpa's project monographs — especially the Brion Cemetery and Castelvecchio catalogues. The single most valuable visual reference for interior detail at body scale.
- Lina Bo Bardi, Stones Against Diamonds and the SESC Pompéia monograph.
- John Pawson, Minimum (1996). The cleanest theoretical statement of interior architecture as a discipline of subtraction.
- Axel Vervoordt, Wabi Inspirations (2010). Time and material as an interior architecture medium.
- Penny Sparke, The Modern Interior (2008). The single best history of interior design as a modern discipline.
- Mark Wigley, White Walls, Designer Dresses (1995). On the modernist interior as a fashion discipline.
- Beatriz Colomina's writing on domestic interiority, especially her essays on Loos and on Eileen Gray.
- Joseph Rykwert on interior thresholds, particularly The Idea of a Town and his essays on the door and the window as architectural objects.
Explore related sections on uni.xyz
Typology: Interior Design is updated editorially as new room-scale briefs come online. This page reflects the state of the interior architecture briefs as of May 2026. If you are an interior architect or an architect who still believes the room is the most serious unit of the discipline, this is the section that takes the argument seriously.
