Eight lines, four couplets, and a whole landscape changes hands. The poem watches a field being turned into a housing development and says almost nothing outright about how it feels. The central idea comes through in word choice: what is being made here, whether we call it progress, order or "liberty," is paid for with something killed, and the people it is made for seem already drained of life.
The opening couplet puts the idea into grammar. "Where a building is building / where a street will be street." The first "building" is a noun and the second is a verb, so the thing and the act of making it collapse into one word. The second line does the same trick in the future tense, and "street" has no article, as if it were a material, like gravel or tar, rather than a particular place with a name. The result is a generic, interchangeable street, which suits a title like "Subdivision," with its sense of land cut into identical portions. The poem has no capitals or full stops either, so it never reaches a sentence-ending pause. It reads like the construction it describes, a process that just keeps going.
Then comes the strangest image: "three cranes walk in the fields." Cranes are both wading birds and lifting machines, and the line lets both pictures stand. A bird walking through a field is natural and almost gentle. A machine that "walks" is unsettling, as if the equipment had taken over the animals' place. The next line, "in a manner mighty civil," is deadpan. "Civil" suggests good manners, but it also quietly echoes civil engineering. "Mighty" can sound grand and old-fashioned, or folksy, as in "mighty fine," and the speaker seems to be commenting from the edge of the field with dry irony. Nothing about the scene sounds violent, and that politeness is what makes it chilling.
The third couplet turns on its last word. "The work of this day rises / to an execution." A building rises, so "rises" seems harmless, but "execution" can mean carrying out a plan, as an architect's design is executed, or putting someone to death. The poem never chooses between them. After so many short, plain words, the long, heavy "execution" lands like a verdict, and the idea of something being raised up toward it faintly suggests a scaffold. That is an inference from the sound and the verb, but it fits the poem's mood. "The work of this day" also has a solemn, almost ceremonial ring, as if this were one stage in a ritual.
Only in the last couplet do human beings appear: "for some liberty given people / with never a light in the eyes." The syntax is loose enough to read two ways, either that something is done in exchange for a kind of freedom or that people have been handed some. Either way, "some" makes the liberty vague and rationed, and "given" makes it a gift handed down rather than something earned. The people are the last thing the poem mentions and the dimmest, with unlit eyes. Eyes are traditionally windows, so the image hints at rows of dark houses as well as dull faces. Who exactly these people are, whether future residents, workers or onlookers, the poem leaves open. The faint sound-link between "rises" and "eyes" ties the labor to the lifelessness.
The form supports all this. There is no rhyme, and the lines are short and loosely rhythmic. "Where a building is building" has a bouncing, dactylic lilt, and "in a manner mighty civil" falls into an almost trotting beat. That folk-tune quality makes the grimness easier to miss, which seems to be the point: the process works because it sounds so reasonable.
The poem is significant for how much it does with so little. It never says "destroy," "ugly" or "loss." It lets doubled words, a bird-machine and a single loaded noun carry the argument. Because it ends without punctuation, it also doesn't pretend the story is finished, and the cranes are still walking.