17.30.040
Dimensional standards
Lot
Extracted standards
14 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Density
- ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. not counted as additional residential unit
For purposes of density calculation, an accessory dwelling unit is considered an accessory use of the property and not counted as an additional residential unit.
Other
- ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. cannot be sold independently
An accessory dwelling unit may be rented but may not be sold independent of the primary dwelling unit
- Building permit required
A building permit is required. The accessory dwelling unit shall be developed in accordance with the California Building Code (CBC)
- Conformity with districtZoning districtA mapped area with one set of rules, identified by a code like R-1 or B-2. development standards
The second dwelling unit shall conform to the development standards for the zoning district in which it is located, including, but not limited to setback, height and lot coverage.
- Compliance with fire safe requirements
The accessory dwelling unit shall meet the requirements of PRC § 4290, the Trinity County Fire Safe Ordinance #1162
- No additional setbacksSetbackThe distance a building must be held back from a lot line. for garage conversion
If an existing garage, or similar out-building, is being converted to an accessory dwelling unit, additional setbacks shall not be required beyond those required for the garage.
- Maximum attached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. floor area1,200 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
The increased floor area of an attached second unit shall not exceed thirty percent of the existing living area, nor be greater than one thousand two hundred square feet.
- Minimum detached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. floor area256 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
The total floor area of a detached second dwelling unit shall not be less than two hundred fifty-six square feet
- Minimum separation between detached ADUs10 ft
A minimum ten-foot setback is required between newly constructed detached accessory dwelling units for fire safe purposes.
- Increased separation for high fire hazard parcels60 ft
This setback shall be increased to sixty feet to comply with Cal-Fire and county fire safe standards for those parcels in the county where additional separation is necessary
- Minimum water flow per unit3 gpm
a minimum flow of three gallons per minute per unit is available for domestic use
- Individual sewer hook-up requirement
The accessory dwelling unit shall be individually serviced by a sewer hook-up, unless the unit is contained within the existing space of a single-family residence or an existing accessory structure.
- Exemption from connection fees
Accessory dwelling units shall not be considered new residential uses for the purposes of calculating local agency connection fees or capacity charges for utilities
Parking
- Parking exception for transit proximity
No additional parking shall be required if the accessory dwelling unit is located within one-half mile of a public transit stop
From the ordinance
The increased floor area of an attached second unit shall not exceed thirty percent of the existing living area, nor be greater than one thousand two hundred square feet.
Parking requirements
{
"accessory_dwelling_unit": "1 space"
}