FAQs - Accessory Dwelling Unit (ADU) Zoning

• 1. What is an Accessory Dwelling Unit (ADU)?

  An ADU is a smaller, independent residential dwelling located on the same lot as a single-family home. They are also known as in-law suites, garage apartments, granny flats, or carriage houses.

• 2. Why should ADUs be added to our zoning options?

  ADUs provide flexible housing options that can help:

  1. Increase the availability of affordable or workforce housing.

  2. Allow seniors to age in place or live near family.

  3. Offer homeowners additional income through rental opportunities.

  4. Provide options for multi-generational living.

• 3. Where would ADUs be allowed if we added them to the zoning code?

  ADUs are typically considered in residential zones where single-family homes already exist.

  Communities may, at least initially, limit them to properties without restrictive HOAs or large enough lots to support additional structures.

• 4. Do ADUs change the character of a neighborhood?

  Properly regulated ADUs are designed to blend in with existing homes. Zoning regulations can address size, height, parking, and setbacks to maintain the neighborhood's look and feel.Item description

• 5. Will allowing ADUs cause traffic or parking problems?

  Most communities require at least one additional off-street parking space for an ADU. Traffic impacts are generally minimal since ADUs are small and typically house only 1-2 people. Item description

• 6. Will ADUs be used as short-term rentals (like Airbnb)?

  Many zoning ordinances restrict ADUs to long-term rentals or require the owner to live on-site. Some communities outright prohibit using ADUs for short-term rentals to preserve their affordability and reduce disruption.Item description

• 7. How large can an ADU be?

  Size limits vary by community but are often capped at 800–1,200 square feet or a percentage of the main home’s size. Some areas limit height and the number of bedrooms as well.

• 8. Will ADUs strain water, sewer, or other utilities?

  In most cases, utility providers can handle the modest increase in usage. However, properties may need to meet certain standards, and fees may apply for connections or upgrades.

• 9. Can I build an ADU on my property now?

  Most likely, no. Proposed changes would need to be approved by the city, and then permitting would be available through the planning department.Item description

• 10. Are there design or construction standards for ADUs?

  Yes. Communities often adopt architectural guidelines to ensure ADUs are compatible with primary dwellings and surrounding homes. Standards may cover materials, entrances, and landscaping.Item description

• 11. Do I need a permit to build an ADU?

  Yes. Just like any residential construction, ADUs require permits for building, plumbing, electrical, and sometimes site work. The city planning office would provide and enforce all requirements.Item description

• 12. How can ADUs help address the housing crisis?

  ADUs create “gentle density”—adding housing without large-scale developments. They are ideal for teachers, nurses, seniors, and young professionals who struggle to afford market-rate housing.Item description