So did a survey today, took photos but annoyingly can't upload from my gallery in StreetComplete.

The property shaped here is some garage/shed.


The "new" property, that is on the road, - the east-side of it, used to be garage/car-port/drive, is now converted, and has the number "73". It appears to be a business premises for spacepad: http://spacepad.co.uk/

This is physically joined to a garage (for 71?) on the east side.


The west-side is the property "73a" and is an actual residential property. They actually have a website with the portfolio and interior shots: https://whitshawbuilders.co.uk/projects/riverdale-road/

This is not physically joined to 73, although there is only approx. 5cm between them.

It's also not physically attached to 75.