We want to build on a residential lot with a very low purchase price. We want to shorten the 2 yearwant to shorten the two year primary residency requirment so we can sell - even before the big house is finished. What are the requirments to establish a house under construction to qualify as your principal residence. Maybe small section of the home liveable etc.August 08 2009 - Rancho Cucamonga00YesReport a ProblemProblemSelect oneOffensive contentIrrelevant contentSpam (pure self-promotion)OtherDetailsYour emailPlease enter a valid email address.Submit CancelContent flaggedWe will review this content. Thanks for helping make the site more useful to everyone. To learn more, read Zillow's Good Neighbor Policy.We're sorry. This service is temporarily unavailable. Please come back later and try again.