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wohnrechner.online – Living space calculator

You can call up the service from the property via the action bar.

1. Create rooms

  • Click on “Create new room”.
  • Select the appropriate category for the room you want to create:
    • Living space (e.g. living room, bedroom)
    • Subareas (e.g. balcony – 25 %, unheated conservatory – 50 %)
    • Usable space (e.g. cellar, garage, attic)
  • Name the room precisely, e.g. “Living room ground floor” (can also be changed later).

2. Capture basic shape & dimensions

  • Click on “Open” for the room.
  • Select the basic shape (rectangle, trapezoid, triangle, etc.).
  • Check the displayed dimension instructions (What dimensions are required?).
  • Enter the measured values exactly in the input fields.

Special feature sloping roofs:

  • <1 m height → 0 % living space
  • 1-2 m height → 50 % living space
  • 2 m height → 100 % living space

3. Record room parts & deductions

  • For L-shaped or complex rooms → create an additional room section.
  • Enter non-chargeable areas (e.g. chimney shafts, supports) as deductions.

4. Organize rooms

  • After creating all rooms → General overview.
  • Rename and sort rooms (adjust order).

5. Specify author data & recipient

  • Enter the creator (private person/company, optionally with logo upload).
  • Optional: Specific recipient data (e.g. specifically for the bank, buyer, financier).

6. Enter property data

  • Address of the property, property type (condominium, house), apartment number, location.
  • Optional: Upload a photo of the property.

7. Further information

  • Purpose of the calculation.
  • Measuring instrument (e.g. laser measuring device) or source (e.g. as-built floor plans).
  • Optional: Enter the old living space (to calculate the difference).

8. Summary & audit

  • Open a preview of the calculation.
  • Check that all rooms, dimensions, categories and deductions are correct.
  • Carry out a plausibility check.

9. Finalization & Export

  • Conclude the summary.
  • Export calculation as PDF and save.
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