HomeMy WebLinkAboutDetached Accessory Structure Intake Checklist
City of Atascadero
Community Development Department
PUBLIC INFORMATION - BUILDING SERVICES
Community Development Department 6500 Palma Avenue Atascadero, CA 93422 (805) 461-5035 fax (805) 461-7612
T:\FORMS\BUILDING\2023 HANDOUTS\Detached Accessory Structure Intake Checklist.doc REV Mar-23
NON-HABITABLE DETACHED ACCESSORY STRUCTURE INTAKE CHECKLIST
SEISMIC DESIGN CATEGORY C, D or E - CLIMATE ZONE 4 - WIND ZONES 85 M.P.H - EXPOSURE ZONE “B” OR “C”
ZONING ORDINANCE - NATIVE TREE ORDINANCE - ATASCADERO MUNICIPAL CODE - 2022 CBC - 2022 CRC - 2022 CEC
2022 CPC - 2022 CMC - 2022 CGBC - ENGINEERING STANDARDS - CALIFORNIA STATE ENERGY COMPLIANCE (TITLE 24)
PERMIT INTAKE MEETINGS ARE REQUIRED BY APPOINTMENT ONLY
MONDAY – FRIDAY BETWEEN 9:00 A.M – 4:00 P.M.
Incomplete submittals will not be accepted at the permit counter
PLEASE BE ADVISED OF THE FOLLOWING:
1. If a detached accessory structure is greater than 50% of the floor area of the principal structure, contact a
planner for additional requirements.
2. One-story detached accessory buildings used as tool sheds, playhouses, and similar uses are exempt from a
building permit, provided the floor area does not exceed 120 sq. ft. (Electrical, mechanical or plumbing is not
exempt, and requires a permit).
3. A maximum of 2 accessory structures that require a permit are allowed per site.
I. Application and Forms:
Applicant City
Residential Intake Request Form – Email permitcenter@atascadero.org prior to schedule intake meeting.
Complete Application - Signed by Property Owner, Authorized Agent, or Licensed General Contractor.
Grant Deed / Title Report – Required if name of owner is different than County Assessor’s Records.
Construction Waste Management Plan – Form available at Permit Counter
Encroachment Permit (Separate Application) – Required for all work within the City’s Right-of-Way.
II. Fees:
Advance Plan Check Fee – Determined prior to intake meeting. Additional fees applicable at permit issuance.
III. Construction Drawings and Support Docs (4 complete drawing sets with 2 sets support docs):
All items included in Site Plan Drawings (see IV. on page 2)
Floor Plans
Architectural Elevations
Structural Calculations – If you are proposing non-conventional construction per CBC.
Truss Calculations – If applicable.
Soils / Geotechnical Report – Required if accessory structure is > 500 SF or on slopes > 10% (see exception below).
Fire Severity Zone Requirements – Required if accessory structure is less than 50 ft. from residential structure or less
than 30 ft. from property line (See Fire Severity Zone Requirements handout).
City of Atascadero
Community Development Department
PUBLIC INFORMATION - BUILDING SERVICES
Community Development Department 6500 Palma Avenue Atascadero, CA 93422 (805) 461-5035 fax (805) 461-7612
IV. Site Plan Drawings: see elements of a site plan handout
Native Trees– All native tree drip-lines (where the branches extend, not just the trunk) within 20-feet of proposed
construction activity shall show tree protection fencing. Construction activity within native tree drip-lines or native tree
removal requires a report from a certified arborist. A separate planning application is required when removing native trees. To
find an ISA certified arborist visit www.isa-arbor.com/findanarborist/arboristsearch.aspx.
Grading & Drainage Plan – Grading over 50 cubic yards requires a grading plan showing cut and fill, existing topography,
proposed finished grades, finished floor elevation, elevation benchmark (location & elevation. If grading over average slops of
10% contact Planning Services (805) 461-5035. See slope and setback handout.
Sediment and Erosion Control Plan – Must be incorporated into grading and drainage plan and must be in place from
October 15th through April 15th.
Stormwater Run-Off Analysis or Hydrology Report – Must use City form; available at the permit counter
Additional Information / Required Prior to Issuance:
One (1) Additional Floor Plan For County Assessor – Min. 11”x17”
Fire Sprinklers (2 sets) – Required if accessory structure is 1000 SF or more; or less than 10 ft. between primary structure. Do not
include on construction plans. This is a separate deferred addendum permit that must be submitted for prior to issuance of new structure
permit.
Exception: The building official may not require a foundation and soils investigation report for a new one-
story, wood-frame and light-steel-frame detached accessory structures 1,000 square feet of floor area or less,
or one-story, wood-frame and light-steel-frame additions to detached accessory structures 1,000 square feet
of floor area or less when a licensed architect or engineer provides a foundation design and a site observation
report with a statement of site suitability.
Minimum foundation for structures that do not require a soils report may be any one of the following:
1. Minimum 27” deep, 12” wide, with 2 #5 bars top and bottom.
2. Foundation design prepared, stamped and signed by a licensed architect or engineer, specific to the
proposed structure with a statement of site suitability.
3. Alternative design approved by Building Official due to minor scope of project, or evidence observed by
site investigation, or substantive information provided by project owner or authorized agent.
City of Atascadero
Community Development Department
PUBLIC INFORMATION - BUILDING SERVICES
Community Development Department 6500 Palma Avenue Atascadero, CA 93422 (805) 461-5035 fax (805) 461-7612
ACCESSORY STRUCTURES IN RESIDENTIAL ZONES
Section 9-6.106 of the Zoning Ordinance provides for the establishment of accessory buildings in residential districts. The
purpose of this informational handout is to clarify the requirements of workshops and studios for consistency with General Plan
policies prohibiting second units and guesthouses as residential accessory uses.
Additions to primary structures are allowed and are not subject to the secondary dwelling unit requirements. Additions must
have a continuous logical internal connection of conditioned space that provides for access to all portions of the primary
structure and addition. The addition shall not have a secondary kitchen. Additions of non-habitable space are not required to
maintain a logical interior connection; however, the addition must have a minimum 10-foot of shared common wall. A
breezeway or similar roof connection, regardless of length, shall not be considered to be attached.
Accessory Structure Definitions
Accessory Dwelling Unit
Conditioned Space
HVAC / Habitable
(Kitchen & full Bathroom)
Studio
Conditioned Space
HVAC / Non-Habitable
(no Kitchen & partial Bath)
Garage/Workshop
Non-Conditioned Space
no HVAC / Non-Habitable
(no Kitchen & partial Bath)
1000 to 1200 SF max (Depending on
location) 450 sf max Size = 50% of primary unit (over 50%
requires special permitting)
Development Impact Fees apply for units
750 SF or greater No Development Impact Fees and No School Fees
Heating, Ventilation, and Air Cooling (HVAC) No HVAC, wood-burning stove allowed
Full bathroom(s) Toilet and Sink only- with a deed
restriction
Bathroom w/ utility shower only- with a
deed restriction
Kitchen No Kitchen No Kitchen or Wet Bar
Multiple Rooms
Residential Occupancy R – Occupancy
(restricted / no overnight stay) U – Occupancy (utility)
Title 24 compliant- Energy Efficiency
Standards
Title 24- Energy Efficiency Standards
compliant No Title 24 compliance requirement
1 per lot 2 per lot total without Conditional Use Permit (CUP) approval (only one studio allowed
per lot)
Fire Sprinklers required if primary
residence has fire sprinklers No Fire Sprinklers Required Fire Sprinklers
Required if 1000 SF or more
Bedroom egress windows No Egress windows No Egress Windows
Other restrictions/requirements may apply based on project details
Utility Door
NOT required