Am I right that planning regulations for new build set parking at 0.75 spaces per property, and any parking provision on your new shoebox/house is now an extra cost on new estates?
No, not in any place that I've looked lately. The Parking Standards for Norfolk are space in a shed or garage or a cycle parking space for each unit, plus 1 visitor cycle space for every 4 units, plus 1 car space for a 1-bed, 2 for a 2/3-bed, 3 for a 4-bed unless the developer can argue successfully that there's already sufficient local car parking or public transport (major town centre or similar).
Of course, sometimes developers will try it on and see if they can sneak something past overworked planning officers and politicised planning committees because each car parking space is a bit less land for putting valuable houses onto, but it shouldn't happen.
What's more common is people in modern high-density developments refusing to use communal car parks because they don't trust their neighbours not to scratch their prized car, so they park it on the access road instead and then people start complaining about how the estate was built without enough car parking while everyone seems to have a huge blindspot about the vast mostly-empty tarmac behind/beside the groups of houses.
