I don't know why people want to invest in render. If money limited I would always first go with replacing Windows with energy efficient Windows which increase natural light and maximise views or garden trees from interior Plus I'd remove brick fence in front of door as houses where you can see front door always look so much more welcoming as upgrade of workers cottage on these latest dilemmas shows

The best way to 'hide' something that you don't like is to draw the eye elsewhere. The screens etc that have been recommended with vines over them are not a good idea. I would suggest 3 trees within the lawn area and not in a perfect triangle. One could be placed in front of the problem area. Eventually you could make a garden bed of decent sized proportion, that would have all trees within and underplant the trees with the same low plant throughout - like a good native grass like plant. The use of the 1 plant will make the area look even bigger and will provide unity to the design.

The plan looks a nightmare - bedrooms facing the street, a tiny internal bathroom with no window to the outside (is that legal?) and a "lounge" that looks like it was meant to be a third bedroom. If the internal walls are stud and don't support the roof you're in with a chance, but I'd say to do a proper job the cheap option is NOT going to work. I'd put two bedrooms where the current family room and lounge are and extend the bathroom into the boot room to give window access, or scrap the current bathroom altogether and use some of the space in what is now the kitchen for a new one. Keeping the WC separate is a good move. If you make the street side the social side of the house you can open it right out and create a big front porch that's a social spill-over from the kitchen/dining area, creating indoor-outdoor flow. Planting (two or three shade trees and some stands of tall perennials rather than a "green fence" hedge) keeps your front garden private yet inviting and stops your front porch becoming a stage set for the street. Good luck! I think you'll turn this very ordinary house into a much nicer place to live!

This is what the brick looks like