Yes, you can build a sunroom addition to your home despite living in a cold climate. Make sure to use high-quality insulation and windows and to supplement with sufficient heating from your HVAC system. The windows in the sunroom allow enough natural light into the room to help heat it most times without having to use the furnace. Even a small electric fireplace can heat the sunroom well enough.

An enclosed porch can be considered a living space if it meets certain criteria. For instance, it must be completely enclosed with solid walls and a roof. It should also have a heating and cooling source similar to the rest of the home. Finally, the porch should have direct access to and from the interior of your house.

A sunroom may count toward your home's total square footage or living space if it meets certain conditions, which can vary by local regulations. Generally, for a sunroom to be included, it must be fully enclosed, properly insulated, and equipped with electrical access and a heating and cooling (HVAC) system, similar to a four-season room. It should also meet the same construction standards as the rest of the house. Three-season sunrooms that function more like enclosed porches typically do not count toward the total square footage and are considered exterior living space.

Even under the best of all circumstances, the maximum ROI on a pool is about 56%. There are other exterior home projects that you can do that are both less expensive to tackle and net a more significant ROI. These include:

• New siding installation, which can net an ROI between 70% and 80%

• Window replacement, which nets an average of over 72% ROI

• Landscaping, which at its highest can net between 200% and 400% ROI

• Garage door replacement, which nets an average ROI of 103%