There are a few ways that you might be able to find your house blueprints online. If you happen to have the original construction plans for your house, then you can probably find them scanned and uploaded somewhere online. Another possibility is that your local government might have digitized their records and made them available online; this is more likely for newer houses than older ones. Finally, there are commercial websites that claim to have databases of blueprints for millions of homes; however, it’s unclear how comprehensive or accurate these actually are.
If you’re interested in trying to find your house blueprints online, your best bet is probably to start with the original construction plans, if you have them. These will give you the most accurate information about your home’s layout and dimensions. If you don’t have the construction plans, checking with your local government office is a good next step; they may be able to direct you to the appropriate website or database. Finally, searching on a commercial site like House Blueprints Online or Blueprint Finder could also turn up some results – though it’s hard to say how reliable these would be.