This is one of the most common questions people ask when they are thinking of building a custom home and, it really just depends... on quite a few things.
Size, location, and complexity of the custom home project need to be taken into account when trying to figure out how long it takes to build a custom home. The design alone will take some time and will depend on your decision making and availability. Typically, this process can take anywhere from 3 - 6 months, and another month after that for permitting.
These construction times can be less or more, but are the most realistic timeline to go by. The construction phase will depend on your decision making as well as your ability to keep change orders at bay. The more changes and indecisiveness from the homeowner, the longer the custom home will take to build.