The previous comments provide the literal meaning of the lyrics, but this song is a lot more than an emotional story. There is some great thought recorded here. The memory that the speaker recalls here is of writing a poem (likely a sonnet). You have to note that this song is partially about memory.
"do the blueprints name the rooms alone?
Do we name them on our own?" These lines provide a question, answered with
"the spaces in the memories you make change the room from just blueprints
To the place where you live."
There may also be a reference in the line
"A breeze seen when the curtains move"
to a poem by Wallace Stevens ("The Curtains in the House of the Metaphysician).
The previous comments provide the literal meaning of the lyrics, but this song is a lot more than an emotional story. There is some great thought recorded here. The memory that the speaker recalls here is of writing a poem (likely a sonnet). You have to note that this song is partially about memory. "do the blueprints name the rooms alone? Do we name them on our own?" These lines provide a question, answered with "the spaces in the memories you make change the room from just blueprints To the place where you live." There may also be a reference in the line "A breeze seen when the curtains move" to a poem by Wallace Stevens ("The Curtains in the House of the Metaphysician).