Where does “byggekostnad” come from?

byggekostnad (Norwegian Nynorsk) comes from Norwegian Nynorsk kostnad, from Old Norse kostnaðr, from Old Norse kosta, from Old Norse naðr, from Proto-Germanic nadrǭ, from Proto-Indo-European néh₁treh₂.

byggekostnad (Norwegian Nynorsk): building cost usually plural: cost of building something

Definitions

building cost usually plural: cost of building something

Ancestry of “byggekostnad”, step by step

byggekostnad traces back through two separate lines of ancestry.

via Norwegian Nynorsk kostnad

Step	Language	Word	Meaning
1	Norwegian Nynorsk	kostnad	cost, expense
2	Old Norse	kostnaðr	cost, expense; maintenance, living
3	Old Norse	kosta	to try; to exert oneself, strive; to injure, hurt
4	Old Norse	naðr	snake
5	Proto-Germanic	nadrǭ	adder; snake in general
6	Proto-Indo-European	néh₁treh₂	—

via Norwegian Nynorsk bygge

Step	Language	Word	Meaning
1	Norwegian Nynorsk	bygge	Alternative form of byggja

Every word from Proto-Indo-European néh₁treh₂ →Every word from Proto-Germanic nadrǭ →Every word from Old Norse naðr →