Browse house plans
On this page, I list sites that I have come across that stand out in some way. For example, they could have a great selection of plans, prices, or just be easier to use than other sites. This is based on my opinion, which I form based on criteria like the ones I just mentioned.
If you have found any great sites, please send me the link and why you think this site is special, and I will take a look at it. I can't guarantee that I'll include it in this list, though.
The (growing) list
archwaypress.com - (direct link to search)
Archway offers a carefully chosen collection of house plans. You won't find tens of thousands of plans here, but the plans they have are high quality designs. Also, they have some of the lowest prices I've come across so far, with a five plan set costing under 500 dollars.
dongardner.com - (direct link to search)
Donald Gardner has been in business for a while and they actually design the plans they sell themselves. This can be relevant if you want quality modifications made, because they can do them in-house (cost between ca 900 - 2000 dollars, depending on how extensive the modifications are).
houseplangallery.com - (direct link to search)
This site has a very clean format for displaying house plans. The pages can be bookmarked (not always the case, believe it or not), and you can easily share a plan by email at the bottom of each page. The plans seem to be the same large selection that most of the big sites have.