I did this too! It genuinely is not that hard. I did spend most time working out the right spec (ie safety, structural etc.) and the main build took me about 2

I did this too! It genuinely is not that hard. I did spend most time working out the right spec (ie safety, structural etc.) and the main build took me about 2 months. I was in by month 3 and fully finished by 4 months. I am ok with big structural stuff, interior (drywalling for example) I don't have the finesse for, but it looks OK. I love DIY, it gets me off a keyboard! And scratches the engineering itch I miss as a people leader. It's not hard though. Like anything it takes a bit of planning and practice. Plus the confidence to have a go.