Answer

Look at how he uses phrases such as ‘I space-walk through the empty bedrooms’ and ‘I reach towards a hatch that opens on an endless sky to fall or fly.’

There is a sense of vast space here and of emptiness. This could be an expression of how he is feeling, empty and insignificant in the huge space of this house or the world. There is also a sense of wanting to escape, to walk in space or to fly away through the hatch into the endless sky. This could be Armitage finally moving into his first house away from his mother, but she is still there helping him measure up for furniture and curtains.