Dimensional standards
Height & bulk
Housing
- Two-family
- by_right
- Three-family
- by_right
- Four-plus family
- by_right
Uses
Permitted by right2
Extracted standards
26 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Height
- Attached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. max heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first.25 ft
An attached ADU may not exceed 25 feet or underlying zone height, whichever is lower, and max 2 stories.
- Detached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. max heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first.16 ft
A detached ADU may not exceed sixteen feet in height.
- Detached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. with roof pitch20 ft
ADU may be up to 20 feet if necessary to accommodate roof pitch aligned with primary dwelling.
- Detached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. near transit18 ft
A detached ADU may be up to 18 feet if within 1/2 mile of major transit stop or high quality transit corridor.
Lighting
- Outdoor lighting shielding
Outdoor lighting shall be shielded so light source is not visible from off-site.
Other
- Architectural elements4 elements
Exterior of ADU shall include four or more of seven listed elements (roof style, slope, material, siding, eave depth, trim, porch/bay window).
- Attached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage. size limit50 pct
Attached ADU limited to 50% of existing primary dwelling floor area.
- Deed restriction
Deed restriction must be recorded prior to certificate of occupancy.
- Fire sprinklers
Fire sprinklers required in ADU if required in primary residence.
ADUs must conform to a fifteen-foot minimum front setback (twenty-foot setback to any garage door).
- Impact fee exemption750 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
No impact fee for ADU less than 750 square feet.
- JADU owner occupancy
All JADUs are subject to an owner-occupancy requirement.
No ADU may cause total lot coverage to exceed 50%.
- Max non-livable space attached to detached ADUAccessory dwelling unit (ADU)A second, smaller home on a lot that already has one — a garage flat, basement flat or backyard cottage.500 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
Maximum size for any non-livable space attached to a detached ADU shall be 500 square feet.
- Max size on multi-familyMultifamily dwellingA building of four or more dwelling units. Where zoning is most restrictive. lot1,000 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
Maximum size on multi-family lot is 850 sq ft for studio/1BR, 1,000 sq ft for 2+BR.
- Max size on single-familySingle-family dwellingOne dwelling unit on its own lot, usually detached from its neighbours. lot1,200 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
Maximum size of ADU on lot with single-family dwelling is 1,200 square feet.
- Minimum interior dimensions10 ft
Interior horizontal dimensions must be at least 10 feet wide in every direction, with minimum interior wall height of 7 feet.
- Minimum private open spaceOpen spaceLand a development must leave unbuilt, sometimes required to be usable or planted.200 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
ADU must provide at least 200 square feet of private open space with minimum dimension of 10 feet.
- Minimum rental term30 days
No ADU or JADU may be rented for a term shorter than 30 days.
- Building separation6 ft
Minimum separation of six feet shall be maintained between an ADU and other structures.
- No separate conveyance
No ADU or JADU may be sold or conveyed separately from the lot and primary dwelling.
- Septic test
If connecting to onsite wastewater treatment, percolation test within last 5 years (or 10 if recertified) required.
ADUs must conform to four-foot minimum side and rear setbacks.
- Tree requirement1 tree
At least one fifteen-gallon size canopy tree shall be planted for every ADU and JADU.
Parking
- Parking exceptions
No parking required if within 1/2 mile of public transit, in historic district, conversion, on-street permits not offered, car share within 1 block, or with new dwelling application.
- Parking requirement1 space
One off-street parking space on a paved surface is required for each ADU.
From the ordinance
ADUs allowed with building permit or ADU permit. Detached ADU max 16 ft height, 1200 sq ft max size, 4 ft side/rear setbacks, 15 ft front setback, 50% lot coverage, 200 sq ft open space, 1 parking space.
Parking requirements
{
"ADU": "1 off-street parking space on paved surface"
}