Ahh, Tamarisk Villa. The first time I've seen pics of it (seen the layout from an old O.S. map). I might be wrong here, but I think that the newish NHS Therapy Centre has been built where it stood). If this is correct, then this, I suppose, technically is the first part of Sevs to be re-developed (even though it happened about 6 years ago!!)
I also thought that Tamarisk stood on the site of the new building but it seems not! The new building stands between the social club site and the bowling green on old exit route to mill road - on the 1938/9 old maps Tamarisk is just south of fernholme. Heres a multimap link to the exact site, note the widening of the tarmac driveway which gave access to the rear (The social club is still standing on the flash earth and was identical). Not sure why Tamarisk and Iris were demolished back in 1997 - presumably they were small and probably long disused with no future value as they stood. Heres a very recent photo of Tamarisk villas site:
[lb=http://www.derelictplaces.co.uk/main/imagehosting/179047cdc4fd97914.jpg]
I'm guessing that that window and wall used to form an external part of the bombed wing?
I think it's more likely that the window was either salvaged from the wreckage or from elsewhere within the complex as the section of wall is contemporary with the verandah and not the ward block.