The best place and most cost-effective areas to add an addition are in a location that flows with the existing house layout. For example, if you add an addition where there is an existing bathroom now, you may be paying for the addition and remodeling of the bathroom. If all your utilities are coming into the location you’d like to add an addition to, typically this creates a little bit of a hassle and increases in cost. However, if you have a dead-end hallway to bedrooms that could be extended for an addition, that’s a great place to start. Another option if you’re purely looking to add living space is to convert the garage into living space, which can save money and time compared to just adding new construction to part of the house.