The best time to build is now. ADU’s are an investment into your property and provide financial security in a slow housing market or economic downturn. In fact an ADU can be one of the safest investments you can make. It's a direct investment into your current property and during a downtown it can provide a sizable increase to your property value. On top of the direct value increase on the property, one can gain the potential rental income, which is the most stable form of income during uncertain times.