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B. Clear and Objective Versus Discretionary Standards <br />Vaguely worded standards contribute to the difficulty of securing ADU permits and may even inhibit homeowners <br />from applying for a permit. Particularly problematic are standards that leave a great deal of discretion to the zoning <br />administrator or require extensive interpretation. Even an apparently objective standard such as a 25-foot height <br />limit requires the exercise of considerable discretion if the ADU roof has different elevations and the ground slopes <br />in different directions. <br />AARP recommends using only clear and objective standards to govern ADUs.49 A best practice is to use expert advice <br />to prepare and test language to ensure that it is clear enough to be administered fairly and easily. <br />C. Review Procedures <br />The two basic options available to a community are to allow ADUs "by right" or to allow ADUs through conditional <br />use permits (sometimes called special exception, special permit, or special land use). <br />"By right" means that the process involves filling out an application and presenting it to a local building official or <br />zoning administrator, then checks to see that it meets the requirements of the ordinance. If the standards are clear <br />and objective, no discretionary decision -making is involved and thus no hearing is necessary. This is also called a <br />"ministerial" review. <br />This is the way building or remodeling a home or building an accessory structure is typically treated. By contrast <br />a conditional use permit process typically involves the application of discretionary standards, public notice of the <br />application and a public hearing. <br />Discretionary standards combined with a public hearing process create opportunities for obstruction by neighbors or <br />organizations opposed to new housing in an established neighborhood. The cost of hiring attorneys or other experts <br />and the delays associated with hearings and appeals can easily exhaust the budget and patience of even an affluent <br />ADU applicant. <br />These obstacles have led many local and state governments to decide thatADUs should be a use allowed by <br />right and subject only to ministerial review. Some have also imposed time limits for decisions on ADUs. (Some <br />governments apply these requirements to other types of housing.) <br />The Model Local ADU Ordinance takes the position that building an ADU should be treated the some way as <br />building or remodeling a home or building any accessory structure — it is a ministerial matter decided by a zoning <br />administrator without notice or opportunity for a hearing. <br />D. Appeals of ADU Decisions <br />Many local zoning ordinances allow for initial decisions on ADU applications by a zoning administrator to be <br />subject to internal appeals — to a hearing officer, the planning commission or a local governing body. Some local <br />governments allow up to two internal appeals. <br />The final local government decision on an ADU, or other land use matter, may be followed by an appeal to the <br />judicial system. There are many variations on internal appeal procedures, for example whether the scope of review <br />is limited and who qualifies as a party to such an appeal. <br />45 1 HARP - Accessory Dwelling Units: Model State Act and Local Ordinance <br />