Two sources, two figures
The map's footprint and BBR's built-up area give two different figures for the same house. Both can be right.
3 chapters · 3 questions
Same house, two registers
Why they differ
GeoDanmark draws the building along the roof edge as seen from the air, so the roof overhang is included. BBR's built-up area is the house's footprint on the plot. The difference is 33.59 m²: the footprint is about 29% larger.
Which figure to use
For roof, gutters and rainwater, the footprint is the right figure. For plinth, masonry and foundation, BBR's built-up area is closest. Two sources that disagree are not an error — they answer different questions.
Questions 1 / 3
Why is GeoDanmark's footprint of the house (149.59 m²) larger than BBR's built-up area (116 m²)?