"Greenacres" was the name of a dwelling once located just south of where Hempton Lane used to split (roughly) north/south. It was the southernmost of three dwellings along this part of Hempton Lane.
This property was named at least once on ordnance survey maps. I have not been able to locate a description on photograph of Greenacres.
To the best of my knowledge this building was demolished unrecorded.