ADU in Individually Designated Historic Properties

ADU Types

In individually designated historic properties, only converted accessory dwelling units (including accessory dwelling units) are permitted. Newly constructed accessory dwelling units are prohibited on individually designated historic properties.

Development Standards


a. Unit Size.

i. Minimum unit size: None

ii. Maximum unit size: None

b. Setback Requirements. No setbacks shall be required for an existing living area or accessory structure converted to an accessory dwelling unit, or a new structure reconstructed in the same location and to the same dimension as an existing structure unless it is required to provide sufficient fire safety.

c. Building Separation. No minimum building separation requirement.

d. Separate Access. An accessory dwelling unit shall provide separate exterior access from the existing primary residence. Entry doors cannot be on the same fa├žade as the entry door of the primary residence, unless this requirement prevents creation of the accessory dwelling unit.

e. Windows and Doors for Historic Properties. Windows and doors (including opening and garage doors) for historic properties that are original to the structure are required to be retained, unless this requirement prevents creation of the accessory dwelling unit.

2. ADDITIONAL STANDARDS. An applicant shall be entitled to develop an accessory dwelling unit that is 800 square feet or less in size provided the accessory dwelling unit provides four-foot minimum side and rear setbacks and does not exceed 16 feet in height regardless of the development standards for floor area ratio, lot coverage, and open space set forth in Title 17 of the Pasadena Municipal Code.