Interior Architectural Design Resources

Interior & Architectural Design – Online Reference Resources

Planning a renovation or building project? This curated collection maps free, high-quality online resources to essential interior design topics: room dimensions, clearances, kitchen planning, bathroom layouts, exteriors, and building services. The focus is on European and metric standards, with a dedicated section for German resources.


Layout Rules & Dimensions

Reference Books (Industry Standards)

  • Neufert – Bauentwurfslehre / Architects’ Data – The definitive German reference for architectural planning. Contains comprehensive metric data on room sizes, clearances, and human dimensions. Based on DIN standards. 44th German edition (2024) available.
  • Metric Handbook (Pamela Buxton)PDF | UK equivalent to Neufert. Covers all building types with metric planning data.

Online Resources (European/Metric)

German Building Regulations

  • Wohnflächenverordnung (WoFlV) – German living space calculation standard. Key rules: rooms under 1m height = 0%, 1–2m = 50%, balconies = 25–50%.
  • DIN 277 – Alternative calculation method counting all areas at 100%.
  • Landesbauordnungen – State building codes define minimum room sizes (varies by Bundesland).

Online Resources (German)

Quick Reference: Room Sizes (Metric)

Room Type Small Medium Large
Living Room 20–25 m² 30–40 m² 40+ m²
Master Bedroom 12–14 m² 15–18 m² 20+ m²
Children’s Room 10–12 m² 15–18 m² 20+ m²
Kitchen 8–10 m² 12–15 m² 18+ m²
Dining Room 12–15 m² 20–25 m² 30+ m²
Entrance/Hall 5–6 m² 8–10 m² 12+ m²

Clearance Guides

Resources

Quick Reference: Clearances (Metric)

Location Ideal Minimum
Walkways between furniture 90 cm 75 cm
Passageways (room to room) 120 cm 90 cm
Coffee table to sofa 45 cm 40 cm
Behind dining chairs 90 cm 70 cm
Around bed (each side) 90 cm 60 cm
Kitchen work aisle (1 cook) 105 cm 90 cm
Kitchen work aisle (2 cooks) 120 cm 105 cm
In front of wardrobe 90 cm 75 cm
Radiator to furniture 10 cm

Sun Path & Climate (Exteriors)

Wind & Ventilation

Exterior Design & Elevations

Bedrooms

Beds, Furniture & Layout

Circulation & Clearances

Toilets / Bathrooms

Components & Layout

Accessibility

Services & Ventilation

Quick Reference: Bathroom Clearances (Metric)

Element Minimum Recommended
Shower cubicle 80×80 cm 90×90 cm
Toilet (center to wall) 38 cm 45 cm
Toilet (front clearance) 55 cm 75 cm
Basin clearance (front) 55 cm 70 cm
Bath (standard UK/EU) 170×70 cm 180×80 cm

Kitchens

The Kitchen Work Triangle

The work triangle connects the three main work areas: sink, refrigerator, and stove/hob.

Work Triangle Rules

Rule Measurement
Each triangle side 120–270 cm
Total of all sides 400–800 cm
Max obstacle intrusion 30 cm
No major traffic through triangle

Landing Areas (Counter Space Near Appliances)

Appliance One Side Other Side
Sink 60 cm 45 cm
Refrigerator 40 cm (handle side)
Stove/Hob 40 cm 30 cm

Cabinet Modules & Storage

Quick Reference: Cabinet Dimensions (European Standard)

Cabinet Type Height Depth Width Range
Base (without worktop) 72 cm 60 cm 30–120 cm
Base (with worktop) 85–92 cm 60 cm 30–120 cm
Wall 30–100 cm 30–37 cm 30–90 cm
Tall/Pantry 200–220 cm 60 cm 45–80 cm
Worktop to wall cabinet 50–60 cm

Lighting & Electrical


Living Spaces & Study

Furniture & Circulation

Visual Design


Interior Design Principles


Services (Electrical, Plumbing, HVAC)


Planning & Zoning


Planning Checklists

Project Management Resources

Renovation Planning Phases

  1. Pre-Planning (6–12 months before)

  2. Define objectives and must-haves

  3. Research local zoning and permits
  4. Set preliminary budget

  5. Design Phase

  6. Create detailed plans

  7. Finalize material selections
  8. Get contractor quotes

  9. Execution

  10. Manage timeline and milestones

  11. Track budget and change orders
  12. Quality checkpoints

  13. Completion

  14. Final inspections
  15. Punch list items
  16. Documentation