House plans can be downloaded from many websites for a price tag or even free. But those free plans may not be a complete set of plans to ready start your project. But you are good to check it as long as they are free. I found a site which provides small house plans for free. Here's a link http://smallhouseplans.in This site provides a complete set of plas with 3d renderings for free. It's worth to visit the site.