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Simpson Studio Architects

Based in London, Simpson Studio Architects crafts expressive interior spaces through custom joinery, bold material juxtapositions, and inventive spatial insertions like concealed passages and textured mini-pavilions. The portfolio offers a strong reference when resolving heavy stone kitchen islands with contrasting cabinetry or designing bespoke, scale-clad play pods for domestic and educational settings.

Interior view by Simpson Studio Architects showing built-in olive green bookshelves concealing a doorway with a red door leaf opening into a powder room.

Brook Green Cottage.

Interior Design & Cabinet Making

A residential interior precedent featuring custom olive green built-in shelving that conceals a secret doorway leading to a dramatic red powder room.

What we like about this project
The bookshelf frame integrates a vertically-paneled red door that swings open to reveal a hidden powder room.

Materials

  • wood
  • paint
  • brass
  • ceramic
  • glass

Visual identifiers

  • built-in-bookshelves
  • secret-door
  • olive-green-joinery
  • red-powder-room

Style tags

  • eclectic
  • custom-joinery
  • residential
  • bold

Visual tags

  • hidden-door
  • custom-joinery
  • bold-color
  • residential-interior
  • threshold
Geometry
A wall of custom built-in shelving in olive green frames a concealed doorway, revealing a compact red-walled powder room beyond.
Spatial scale
Domestic room scale, intimate passage connecting spaces.
Lighting
Warm interior illumination highlighting the joinery and creating a focal point on the sink and mirror within the powder room.
Atmosphere
Playful, dramatic, and tactile through contrasting color palettes and concealed thresholds.
Environmental context
Interior residential setting with adjacent doorway and wooden flooring.
Spatial experience
The composition creates a threshold moment where a functional bookshelf acts as a secret passage, shifting from muted green joinery to a vibrant red interior.
Composition rhythm
Vertical bookshelf bays juxtaposed against the swing of the paneled secret door.
Style reading
Contemporary eclectic residential interior
Program
Residential powder room entry / hallway joinery
Perspective
Interior Spatial
Discipline
interior
Materials
wood, paint, brass, ceramic, glass
Visual identifiers
built-in-bookshelves, secret-door, olive-green-joinery, red-powder-room
Style tags
eclectic, custom-joinery, residential, bold
Visual tags
hidden-door, custom-joinery, bold-color, residential-interior, threshold
Geometry
A wall of custom built-in shelving in olive green frames a concealed doorway, revealing a compact red-walled powder room beyond.
Spatial scale
Domestic room scale, intimate passage connecting spaces.
Lighting
Warm interior illumination highlighting the joinery and creating a focal point on the sink and mirror within the powder room.
Atmosphere
Playful, dramatic, and tactile through contrasting color palettes and concealed thresholds.
Environmental context
Interior residential setting with adjacent doorway and wooden flooring.
Spatial experience
The composition creates a threshold moment where a functional bookshelf acts as a secret passage, shifting from muted green joinery to a vibrant red interior.
Composition rhythm
Vertical bookshelf bays juxtaposed against the swing of the paneled secret door.
Style reading
Contemporary eclectic residential interior
Program
Residential powder room entry / hallway joinery
Perspective
Interior Spatial
Discipline
interior

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  • © 2026 HappyCluster

Directories

  • Firms
  • Patterns

AI Native Apps

  • AI Mode Search
  • SoftMarket
  • 2nd Brain

About HappyCluster

  • About
  • How it works
  • Contact

Connect

  • Waitlist
  • X
  • GitHub

Legal

  • Privacy
  • Terms

HappyCluster

© 2026

Interior view by Simpson Studio Architects showing built-in olive green bookshelves concealing a doorway with a red door leaf opening into a powder room.

Brook Green Cottage.

Interior Design & Cabinet Making

A residential interior precedent featuring custom olive green built-in shelving that conceals a secret doorway leading to a dramatic red powder room.

What we like about this project
The bookshelf frame integrates a vertically-paneled red door that swings open to reveal a hidden powder room.

Materials

  • wood
  • paint
  • brass
  • ceramic
  • glass

Visual identifiers

  • built-in-bookshelves
  • secret-door
  • olive-green-joinery
  • red-powder-room

Style tags

  • eclectic
  • custom-joinery
  • residential
  • bold

Visual tags

  • hidden-door
  • custom-joinery
  • bold-color
  • residential-interior
  • threshold
Geometry
A wall of custom built-in shelving in olive green frames a concealed doorway, revealing a compact red-walled powder room beyond.
Spatial scale
Domestic room scale, intimate passage connecting spaces.
Lighting
Warm interior illumination highlighting the joinery and creating a focal point on the sink and mirror within the powder room.
Atmosphere
Playful, dramatic, and tactile through contrasting color palettes and concealed thresholds.
Environmental context
Interior residential setting with adjacent doorway and wooden flooring.
Spatial experience
The composition creates a threshold moment where a functional bookshelf acts as a secret passage, shifting from muted green joinery to a vibrant red interior.
Composition rhythm
Vertical bookshelf bays juxtaposed against the swing of the paneled secret door.
Style reading
Contemporary eclectic residential interior
Program
Residential powder room entry / hallway joinery
Perspective
Interior Spatial
Discipline
interior
Materials
wood, paint, brass, ceramic, glass
Visual identifiers
built-in-bookshelves, secret-door, olive-green-joinery, red-powder-room
Style tags
eclectic, custom-joinery, residential, bold
Visual tags
hidden-door, custom-joinery, bold-color, residential-interior, threshold
Geometry
A wall of custom built-in shelving in olive green frames a concealed doorway, revealing a compact red-walled powder room beyond.
Spatial scale
Domestic room scale, intimate passage connecting spaces.
Lighting
Warm interior illumination highlighting the joinery and creating a focal point on the sink and mirror within the powder room.
Atmosphere
Playful, dramatic, and tactile through contrasting color palettes and concealed thresholds.
Environmental context
Interior residential setting with adjacent doorway and wooden flooring.
Spatial experience
The composition creates a threshold moment where a functional bookshelf acts as a secret passage, shifting from muted green joinery to a vibrant red interior.
Composition rhythm
Vertical bookshelf bays juxtaposed against the swing of the paneled secret door.
Style reading
Contemporary eclectic residential interior
Program
Residential powder room entry / hallway joinery
Perspective
Interior Spatial
Discipline
interior

Related in this portfolio