Depends on how much you want to finish before moving in.
See other topic where I posted about a house that is partially built but enough done to get in the door.
http://askaboutmoney.com/threads/self-build-minimal-work-to-move-in.201867/
That house probably has about 30% of the internal plastering done. A percentage of wiring. A percentage of timber work and a percentage of floors. A percentage of sanitary ware. Presume plumbing for heating etc. has been run to locations in house ready to connect but not installed.
If you have a lady she might not be impressed at living in half a building site long term, but if you can work alone with cash. It is not a bad solution and you could work away.
A lot of people would frown on the idea (especially many tradesmen who like a one stop shop and would have a stroke at the prospect of bit part construction over a long time) but at the end of the day, it is your house, not theirs!!!
Below are the details from the other topic
1.Water was already on site as it was built on an outside farm. Likewise ESB.
2.Did sewage and septic tank when digging foundations
3.Blockwork and external plastering done.
4.Internal plastering only done to external walls in each room.
5.No plastering to other internal dividing walls except Bedroom and Kitchen cum Livingroom
6.Stove for heating in Kitchen/Livingroom. Plug in oil rad in bedroom
7.Fitted kitchen done.
8.Lino floor in kitchen and ensuite bedroom
9.Two rooms wired only. Cables not run to other rooms
10.Two rooms plumbed only with pipework laid for rads etc. other rooms
11.Lino floor covering in corridor to bedroom. No other floor covering
12.Electric shower in ensuite
13.Minimal budget tiling in ensuite. Full tiling to follow