ADUs represent secondary moderate-size buildings located on the owner-occupied lot. Having acquired all the necessary documents for the ADU construction and implemented your ADU project, you gain a significant number of benefits. Such a new secondary structure can be used as the additional living space for your family, as well as the guest house. ADU can also serve as an additional sustainable source of income which is an excellent alternative to bank deposits, as this type of investment can be much more profitable and safe.