Brief definition
- DIN 277 governs areas of buildings (gross/net floor areas, usable areas by use type).
- DIN 276 structures costs into cost groups for fees and cost planning.
Both standards are used in parallel in early design — they answer different questions.
Practice for planners and estimators
| Question | Standard |
|---|---|
| What is the building area? | DIN 277 |
| Which cost group does a component belong to? | DIN 276 |
| WoFlV living / usable area? | WoFlV (supplementary) |
AIGO relevance
AIGO delivers verifiable geometry from drawings and structures exports for DIN 276-oriented BoQ workflows and WoFlV-relevant metrics. DIN 277-compliant area classification remains under your professional sign-off — with an auditable numeric basis from AIGO.