Ok.
Sanderstead station has lots of parking, there are two car parks (one either side of Sanderstead road). Alternatively, South Croydon also has parking which is £19.40 per week.
From Addington Rd you can get the 64 bus which is 24 hr, and is between 10-20 minutes to East Croydon, 20-30 to West (with the overground). On that route it's probably an hour all together which is similar to when I lived in z3.
This is a nice area, the shops are good, the high st isn't bad and there's a lot of green space. For z5 the houses are also still very reasonably priced, and with Westfield coming to Croydon all the predictions are that the area is set to rise.
However, the school options aren't great and it's not that close to a station. We've lived here for 5 years and have been very happy, no crime issues or anything of the sort, but we're looking to move for a better primary school.
FWIW, I think that house is overpriced, btw. Have a look at this one: Sundale Avenue, Selsdon, South Croydon
www.rightmove.co.uk/property-for-sale/property-33584979.html
Same layout except they haven't knocked through kitchen into dining room. We did that and it was £11k including a brand new kitchen.