A Guide to Accessory Dwelling Units

A dwelling unit contains a kitchen and bath and is suitable for occupancy by a family.

DEFINITION AND BENEFITS

WHAT IS AN ACCESSORY DWELLING UNIT (ADU)? The City’s zoning ordinance defines an accessory dwelling unit as, “ A secondary living space which shares ownership and utility connections, and which is on-site with a primary living space that may be contained within the same structure as is the primary living space, or may be contained in a separate structure. ” A dwelling unit is defined as “A room or suite or set of rooms occupied and suitable for occupancy as a family residence and having a kitchen, and bath and sanitary facilities, together with appropriate appurtenances to that occupancy.” WHAT ARE THE BENEFITS? A dditional I ncome S ource An accessory dwelling can be rented as an individual dwelling, providing the homeowner with additional income. The homeowner would have the option of renting either the primary home or the ADU. The unit may be rented on a long-term or short-term basis when registered and compliant with the City’s Short Term Rental Ordinance. C ommunity B enefits Accessory dwelling units benefit the community by contributing to the diversification of housing types and sizes. Accessory dwellings also increase the supply of affordable housing and offer more housing choices to accommodate the varying needs of San Marcos residents. E xtended F amily and A ging -I n -P lace B enefits Accessory dwellings provide families with the means to care for extended family members - both young and old - by enabling them to maintain their independence and avoid costly housing alternatives.

An ADU may be attached to the primary home or a separate structure on the same lot.

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City of San Marcos Planning and Development Services Department