Thanks for replying to my opening post so quickly. I am comforted hearing the project is doable for the budget. To me £300k is a huge huge huge amount of money but when we start talking house building it becomes a rather average pot. ?
I am now decided on the new build. My problem is I don't have plans to use! The original architect designed a very modern new build which I slowly grew to hate. It ended up looking like a health centre. The second architect's plans are unsuitable as they rennovate the existing bungalow so I am back to the beginning with less money and no plans, just ideas. I cannot tar all architects with the same brush but I really do not want to go there again. This primarily is why I am looking for an off the shelf kit pattern that I can tweak. The attached plans is a design by Scotframe that we like apart from the garage which we would adapt to a living area (office). If I cannot get Scotframe to respond in time (I really want this well underway this year) something on a similar theme would be ok. I hear what you are saying @Declan52 about companies being inundated with enquiries. I will cut them some slack.
This would change the existing bungalow to a 1 1/2 storey . Planning have been very easy upto to now and my theory is as they passed the original modern (health centre) house I cannot see this being and issue. Noone is overlooked etc as we are very rural.
I am prepared to put as much work into this as I need to save money. One big bonus is I have found a really keen helpful builder (one man band) that will guide me where he can.
I was aware of the VAT refund on newbuild but your comment @newhome is really interesting. I will not use loose descriptions in the future, thank you for that! Also although a turnkey is tempting I will do as much as I possibly can to cut costs.
@Christine Walker I will look into Claymore.