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.
Where to find small house plans : If you are interested in small house plans you should always look for the best deals on blueprints. Blueprints or plans are available from a variety of sources and at many different prices. Two of my favorites are coolhouseplans.com and dongardner.com. Plans from coolhouseplans have prices ranging from $585 for five sets of blueprints up to $1,175 for CAD files. If you are not familiar with CAD files, these are Computer Aided Drawing files, meaning that they provide all the information needed to build the house on CD-ROM and have blueprints that can be printed and as often as needed and in any quantity.
Streets and topography may be the main determinates of a house's orientation, but it's also a good idea to consider sun exposures when possible. A homeowner might reorganize a floor plan to take advantage of morning and afternoon light. Martin says that covered porches that face a southern exposure can help block out heat and sunlight.