Ms Strelitz, 28, describes the collective as a collaboration of architecture and art and design.
At the Turner Prize exhibition they showcased their work through a showroom of a social enterprising workshop set up in Granby to help the community.
The workshop, which recycles materials from derelict houses into home furnishings, aims to bring commercial activity back to the area and employ local people.
The 16 core members of the collective attended the ceremony on Monday night to receive the prize cheque of £25,000.
New North London synagogue member Ms Strelitz said: "We were massively shocked because it wasn't anything we anticipated. It is very exciting."
The former pupil of North London Collegiate said the money will be used for other projects they are currently working on.
