WoFlV basement and ancillary rooms

Brief definition

Basement and ancillary rooms under WoFlV are treated differently when determining usable and living area — depending on usability, height, and residential purpose.

Typical cases

• Fully usable basement dwellings vs. pure utility cellars
• Utility and plant rooms
• Deductions below minimum height or for certain uses

AIGO relevance

Floor plans provide room geometry. AIGO captures areas deterministically; WoFlV rule application uses a documented geometry basis and professional sign-off.