A rendered finish on the new extension would look good, I believe the new renders are great, if you were near the beach you could use horizontal cladding, would be easier if we could see a plan or such

Lovely house with timber and render

Thank you everyone. I will talk to the builder about the scion option and see if we can maybe do something.

Perhaps bagging the brickwork would be another idea. Not as expensive as render and you still have a faint outline of the bricks - more suitable for this style of house as it retains a surface texture like bricks, but without the colour. Bagging is a cement slurry applied over the bricks - can have an integral colour, be left grey or painted. Works best if the brick joints are flush with the face of the bricks which seems to be the case in your photos.

I think the option of a few different colours/ textures might work. My husband thought we could leave the existing left hand side and verandah as brick and get the new part and the existing garage rendered or some sort of stone cladding that goes with the brick. My concern is the brick is quite patterned and the cladding would have to be pretty simple or it would be too busy. I like the idea of using a charcoal brick and sandstone combination.

keep it simple, retain bricks and use cladding/panels on the extension, different textures and colours as Kasindalj mentioned work well together and would save a lot of unnecessary expense

Your extension could look something like this, garage wall rendered a lighter grey ,bedroom clad and all 3 garage doors painted the same grey colour, I think this would blend in with the original bricks