As of 2016, there are no free websites that provide architectural layout plans. Chatham Design Group, Architectural Designs, ePlans, Houseplans and Floorplans host comprehensive websites with architectural layout plans, which are available at a fee. Each of these sites offer unique, architectural layout plans.
Floorplans.com provides architectural plans of various styles ranging from modern to traditional styles. Select the preferred style from the available categories on the home page, then proceed with the selection to view the exact details. The site offers over 25,000 layout designs.
Architectural Designs lists numerous home plans and styles on its home page. The site allows a quick search of the available house plans and provides prices.