Construction cost such as materials, labor, and consultant fees will vary depending on rates set by the consultants and professionals you choose to retain. However, the City is making efforts to greatly reduce costs associated with building an ADU. On June 6, 2023, the City of Desert Hot Springs City Council approved to waive all local development impact fees for ADU’s built in the City, reducing permitting fees significantly. Costs will vary depending on the type of ADU you decide to build. At the bottom of the page you can find fee estimate sheets associated with the plan type you choose for your ADU!