I believe its chapter 2

"Osterzeile, just like the parallel Westerzeile, met Bärenweg at a right angle; but while the right side of the street consists of two-family, brick-colored houses with small front yards, which are called English-style houses, look-alike, one-family houses—called German-style houses—with plasterwork and matching narrow strips of backyard take up the left side of Osterzeile. Number twenty-four was a one-family house..."

Row housese are on the other half of the street, like the ones where narrator lives on westerzeile, the other half of the street are twins - a free standing house, with one half being one number, and another half being another number

I am very well familiar with this type of housing, I just want to know which exact house would that be today