Looking at the early B&W photo in post #3,072 and if you wanted to retain a degree of authenticity of the relationship of the to the cottages to the track you could always lower their foundations slightly so the bottom window sill is at track level - cannot tell if this is already the case from the photo angles.
Having looked at the NLS 25 inch 1892-1914 series it appears the cottages follow the railway line boundary as is also evident in the photos. My guess is the cottages were built either at the same time or just after the railway built.
I also didn't realise the LSWR carried out some hefty earthworks and track realignment around Dunmere Junction.
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