Remember that plans are not necessarily "as is." Builders can use a reverse set of plans (sometimes called a mirror image) to better site a house. It's also possible to hire an architect or modification service to personalize a plan. Ask if reproducible prints or electronic CADD files are available for the selected plan. Either will make the alteration process quicker and easier.
In addition, good stock plans come with a detailed inventory, which you can use while you're developing out your dream house. This is important for two reasons: you can look at the materials used to build your house and determine whether your budget will stretch to accommodate them, and you can get a very good idea of where to upgrade and downgrade materials.
Having been in the business for more than 30 years, we have seen a large number of house plans which looked good at first glance. However, upon closer examination, many of these plans were found to be lacking large amounts of needed information. If a house plan is not easy to navigate or is not thoroughly detailed, then the builder is left to guess at the designer's intentions. This often means that he will "pad" his bid to make sure that he covers any unknown construction costs that may arise.
How to Find the Best House Plans : The best bet for finding the right house plans is to browse the different websites providing house plans and select the most reputable one. When you visit their site, you will find a plethora of house plan designs with pictorial representation of the homes, complete with floor plans, cross-sections, and elevations so that you can get a clear idea of what the house will look like. When you look at a number of these, you will get great ideas that you can modify to suit your own requirements. The website will also give a rough idea of the cost involved in building a house as per a particular house design.