Godan verb with 'bu' ending, Intransitive verb
to stand in a row (e.g. shops on a street); to line in a row; to line
建ち並ぶ refers to buildings
その通りに立ち並ぶ木々は春に美しい花を咲かせます。The trees that line the street have lovely blossoms in spring. to be equal to; to be on a par with
Also written 建ち並ぶ【たちならぶ】、立並ぶ【たちならぶ】