I did, finished it 11 years ago, five beds three baths, cctv, flood wired with cat 5, instant tap, heated mirrors,list goes on. I am a contractor and did a lot myself, house took every penny i had in my life savings and then 40k from visa on interest free cards, the real cost was the 3 years of weekends and evenings that evaporated from my life and a relationship.
Get the plans absolutely sorted
Get the spec absolutely sorted
Get the finances absolutely sorted
Get the management absolutely sorted, this can be you if you have whats needed.
Then get ready for it not to goto plan