The buildings are to be in reconstituted stone, brick and render, so not traditional Street building materials. There are many traditional lias buildings between there and Somerton Road, so it would be nice to have the local materials. Two of the houses would be fronting onto the road, so the building material would be particularly important for them. The elevations don't seem particularly appealing. You can see all the documents on the Mendip website here.
The entrance to Petvin Close is illustrated here, together with shots of where, I imagine, the housing is planned.
