De or het boarderij?

The correct Dutch article is:

de boarderij

Rule Words ending in -ij and -erij: usually de. See the rule

This word is not in the word lists we use to double-check answers.

How to use boarderij

the boarderijde boarderij
this boarderijdeze boarderij
that boarderijdie boarderij
our boarderijonze boarderij
your boarderijjouw boarderij
every boarderijelke boarderij
which boarderij?welke boarderij?
a big boarderij / the big boarderijeen grote boarderij, de grote boarderij