City of Costa Mesa ADU Granny Flat Regulations

In an effort to combat rising housing costs California passed major legislation allowing any house zoned for single-family to build a second rentable unit, known as an accessory dwelling unit. This has opened up massive opportunities for California homeowners allowing them maximize their property values. If you’re interested in building an accessory dwelling unit, you’ve come to the right place!

Contact info@usmodularinc.com or 888-987-6638 for more information!

ORDINANCE  NO. 18·03

 

AN   ORDINANCE    OF   THE   CITY   COUNCIL   OF   COSTA   MESA,   CALIFORNIA, ADOPTING   ZONING  CODE  AMENDMENT   CO·17·01,  AMENDMENT   TO TITLE  13, CHAPTERS    I,   IV,   V,   VI   RELATED    TO   DEFINITIONS,    LAND   USE   MATRIX, DEVELOPMENT   AND  PARKING  STANDARDS   AND  LAND  USE REQUIREMENTS RELATED  TO  ACCESSORY   DWELLING  UNITS  IN SINGLE  FAMILY  AND  MULTI- FAMILY ZONING  DISTRICTS  DEVELOPED WITH SINGLE  UNITS

 

THE CITY COUNCIL  OF THE CITY OF COSTA  MESA  DOES HEREBY  ORDAIN  AS FOLLOWS:                                                                                                                                                  -\

 

 

SECTION  1: FINDINGS

 

The City Council finds as follows:

 

WHEREAS.  this Code Amendment  CO-17-01 to amend Title 13, Chapter 1 would allow ministerial approval of Accessory Dwelling Units in R1 and R2-MD Zones where the property  is developed  with  a single family  unit subject  to development  standards  and specific requirements.

 

WHEREAS, this ordinance is intended to provide compliance with Senate Bill 1069 and Assembly  Bill 2299 effective on January 1. 2017.

 

WHEREAS,  as  required  by Senate  Bill  2299,  under  this  ordinance  accessory dwelling units will not be considered as exceeding the allowable density for the lot upon which  the  accessory  dwelling  unit is located.  and that  accessory  dwelling  units are  a residential  use consistent  with the existing general  plan and zoning  designation for the lot.

 

SECTION  2: CODE AMENDMENT  – Title  13, Chapter  I. Article  2, Section  13-6 (Definitions),  is hereby amended as follows:

 

Accessory  Dwelling  Unit (ADU).  A second dwelling  unit established  in conjunction with and subordinate to the single family dwelling unit existing on the property. The accessory dwelling unit may be as studio with no bedroom or contain a maximum of two bedrooms and be attached  to the single family  dwelling  unit or located  in a detached  accessory building on the same lot. It may also be referred to as an accessory  apartment, granny unit. granny flat, or in-law apartment.”

 

 

SECTION 3: CODE AMENDMENT  –   Title 13. Chapter  IV, Section 13-30 (Citywide Land

Use Matrix), is hereby amended as follows:

 

 

..                                                                                     .

 

22.2   Accessory  dwelling unit (subject to the

requirements  of Chapter V,   p2    •     •     •   •   •   •   •    •   •   •   •   •        •

 

 

  • •   •    •   •     •

 

Section 13-35, accessory              p2

dwelling units)

2 This use IS  subject to the requirements  of the referenced  Municipal  Code article or section.

 

 

 

SECTION  4. CODE AMENDMENT.   Title  13, Chapter  V, Section   13·31 (Purpose   of

Residential   Development  Standards):

 

(e)          Provide  for  the  creation  and ministerial  consideration   of accessory  dwelling units in the R1 (Single-Family  Residential  District) and R2-MD (Multiple-Family Residential  District,  Medium Density) at the allowable  general  plan density for the lot.

 

SECTION   5.  CODe  AMENDMENT. Title   13,  Chapter   V,  Article   1,  Section   13·35 (Residential   Development  Standards)

 

Sec. 13·35.•  Accessory   dwelling   units.

 

Pursuant to Government  Code § 65852.2, local governments  have the authority to adopt regulations  designed  to promote  accessory  dwelling  units. An accessory  dwelling  unit which  conforms  to the  requirements  of this section  shall not be considered  to exceed the allowable  density  for the lot upon which  it is located  and shall be deemed  to be a residential   use  which  is  consistent   with  the  general   plan  designation   and  zoning classification  for the lot.

 

The  following   criteria  constitute  the  standards  that  the  city  shall  use  to  evaluate  a proposed  accessory  dwelling  unit.

 

(a) At all times the accessory  dwelling  unit exists  either the accessory  dwelling  unit or the single family residence  shall be owner occupied.   Neither unit shall be rented for any  period of 30 days or less.   Prior to the  issuance  of any building  permit for an accessory  dwelling unit, a covenant that meets the approval of the City Attorney  shall be recorded  on the property to enforce these  requirements.   The covenant shall be valid as long as the accessory  dwelling unit exists.

 

(b) An accessory dwelling unit shall be limited to a lot In the R1 and R2-MD, zones which contains  no more than one,  existing single~famlly dwelling with a minimum  lot size of 7,900 square feet In R1 zone. In the R2~MD zone, the rot must have been existing as of March 16, 1992, and the lot must be between 6,000 and 7,260 square feet.

(c) The accessory  dwelling unit shall not be Intended for sale but may be rented.  Rental terms shall be in excess of 30 days.

(d) The primary dwelling  unit shall be a single-family  residence.

(e) If detached  from the single family  residence,  the accessory  dwelling  unit size shall not exceed 400 square feet for a studio unit or 800 square feet with maximum  two bedrooms.  For all purposes of this Section, a home office is considered a bedroom.

(f) If attached or incorporated  within the single family  residence, the accessory  dwelling unit  area  of floor  space  shall  no exceed  50  percent  of the  proposed  or  existing primary dwelling  living area or 800 square feet.

(g)  One  parking  space  shall  be  provided  for  an  accessory  dwelling  unit  unless  the accessory  dwelling  unit is a maximum 400 square feet studio unit with no bedrooms. in which case, no parking space is required.  Parking for the accessory  dwelling unit may be provided  as tandem  parking on an existing driveway  leading to a garage or carport but must be in addition to any parking required for the single family residence and must not block more than one other parking space, including any parking space in a garage. Tandem  parking means that two or more automobiles  are parked on a driveway or in any other location on a lot, lined up behind one another.

 

Parking  for  the  accessory   dwelling  unit  cannot  be  provided  via  paraflel  parking spaces located at a rear alley setback.  No parking shall be permitted within front yard setbacks  and  side  yard  setbacks  for  corner  parcels.  Parking  for  the  accessory dwelling  unit is not required in each of the following  situations:

  1. When the accessory dwelling unit is located within Yz  mile of a public transit;
  2. When the  accessory  dwelling  unit  is  located  within  an  architecturally   and

historically  Significant historic district;

  1. When the  unit  Is part of the proposed  or existing  primary  residence  or an accessory  structure;
  2. When on-street parking permits are required but not offered to the occupant of the accessory dwelling unit; and,
  3. When there is a car-share  vehicle located within one block of the accessory

dwelling  unit.    “Car-share  vehicle”  means  part  of  an  established   program intended to stay in a fixed location for at least 10 years and available  to the public.

(h)  For  accessory   dwelling   units  that  are  created   within  an  exJsting single  family

residence. no additional parking is required; however. when a garage is converted to an accessory dwelling unit or is demolished in conjunction with the construction of an accessory  dwelling  unit. a new garage including  two open  parking spaces  must be provided on the parcel in compliance with provisions applicable to R-1 zone.

In conjunction  with an accessory  dwelling  unit application,  the parking  required for the   single   family   residence   shall   be  in  compliance   with   the  current   parking requirements  as specltled  in Chapter VI Off-Street  Parking Standards  and shall not be attributed  to the accessory  dwelling unit.

(h) Except as provided  in this subsection (h). an accessory  dwelling  unit shall comply with the residential  development  standards shown in Title  13, Chapter  V, Table 13-

 

32 and shall be subject to all applicable  residential  design  guidelines.   If, however, the proposed accessory dwelling unit is proposed to be entirely on the first story, and entirely within  an existing  garage, then no setbacks  are required for the accessory dwelling  unit.   Further,  If any portion of a proposed  accessory  dwelling  unit will be above  an existing  garage,  those portions above the garage shall not be required to have   a   setback   which   exceeds   five   feet   from   the   side   and   rear  lot   lines. Notwithstanding  anything  in this subsection  (h) to the  contrary,  the  structure  shall comply with all applicable  requirements of the Building Standards Code.

(i) An application  for a second unit shall be considered  ministerial  by the Development

Services   Director   or  his/her   designee.   Exception:   Where   deviations   from  the residential  development   standards  are  requested,  the  second  unit  application   is subject to the application  processing procedures  as set forth  in ntle  13, Chapter  III Planning  Applications.  An appeal  shall be in accordance  with  Title  2, Chapter  IX Appeal,  Rehearing  and Review Procedure.

0> An application  for a second  unit involving second  story construction  may be subject

to minor design  review pursuant to Title 13, Chapter  III Planning Applications.

(k) Every accessory  dwelling  unit (whether attached  or detached)  must be on a single story.  In addition,  a detached  accessory  dweJling unit must  not exceed  15 feet  in height, unless it is above an existing garage, In which case the structure must comply with the two-story  height requirements for the zone.

(I)  Each residential  parcel may contain only one accessory  dwelling unit.

(m) Allor  part of a legally existing  accessory structure  can be converted  into an ADU as long as It meets the following:

  1. The ADU has independent exterior access.
  2. The rear and side setbacks are deemed sufficient for fire safety as required by the Building Code.
  3. The structure complies with applicable Building Codes for the proposed use.
  4. The conversion does not involve an addition of floor area to the structure.
  5. In such cases, the City may not require the applicant to install a new or separate

utility connection  or impose a related connection fee or capacity charge.

 

SECTION 6. CODE AMENDMENT. Title  13, Chapter  VI, Section  13-85 (Parking

Requirements for Residential Developments)

 

(d) Parking  for accessory  dwelling  units. One  parking  space  shall be provided  for  an accessory  dwelling  unit  unless  the  accessory  dwelling  unit  has  no  bedrooms,  In which  case,  no parking  space  is required.    Parking  may  be provided  as tandem parking on an existing driveway leading to a garage or carport but must be in addition to any parking  required for the single family residence.  Tandem parking means that two or more automobiles  are parked on a driveway or in any other location on a lot, lined up behind one another

 

Parking  for  the  accessory  dwelling  unit  is  not  required  in each  of  the  following situations:

  1. When the accessory dwelling unit is located within ~  mile of public transit;
  2. When the  accessory  dwelling  unit  is located  within  an  architecturally   and historically  significant district;

 

  1. When   the  accessory    dwelling   unit  is  part  of  the  proposed    or  existing   single family   residence   or an accessory   structure;
  2. When  on-street   parking  permits  are required   but not offered  to the occupant   of the  accessory   dwelling   unit; and,
  3. When   there   Is a car-share   vehicle   located   within   one  block  of the  accessory dwelling   unit.  To  prevent  car-sharing   applications    that  allow  individuals   to rent personal   vehicles   to qualify,  “Car-share   vehicle”   means  that the  vehicle  is part of  an  established    program   intended   to  stay  in a fixed  location   for  at  least  10 years  and  available   to the public.

 

In conjunction    with  an  accessory    dwelling   unit  application,    the  parking   required   for  the single  family  residence   shall  meet  the current  parking   requirements    specified   in Chapter VI  Off-Street    Parking   Standards,    and  shall  not  be  attributed    to the  accessory    dwelling unit.

 

SECTION   7:  ENVIRONMENTAL      DETERMINATION.     The  project  has  been  reviewed   for compliance   with  the  California   Environmental    Quality  Act  (CEOA),   the  CEQA  guidelines, and  the  City’s  environmental    procedures,   and  has  been  found  to  be  exempt  pursuant   to CEQA   Guidelines    Section   15282(h),   which   states   that   “the   adoption   of  an  ordinance regarding   second  units in a single-family   or multifamily   zone by a city or county  to implement the  provisions    of  Sections   65852.1   and  65852.2   of  the  Government    Code”   relating   to “granny”  housing  and “second  unit ordinances”  are exempt  from the requirements   of CEQA.

 

SECTION   8:  INCONSISTENCIES.       Any  provision   of  the  Costa  Mesa  Municipal   Code  or appendices   thereto   inconsistent   with the provislons  of this ordinance,   to the extent  of such inconsistencies    and  or further,   is hereby  repealed   or  modified  to the  extent  necessary   to affect  the provisions   of this ordinance.

 

SECTION   9: SEVERABILITY.     If any provision  or clause  of this ordinance   or the application thereof  to any  person  or circumstances    is held to be unconstitutional   or otherwise  invalid  by any court of competent  jurisdiction,   such invalidity  shall not affect other  provisions  or clauses or  applications   of this  ordinance   which  can  be implemented    without  the  invalid  provision,

clause  or application;   and  to this  end,  the  provisions   of this  ordinance   are  declared   to be severable.

 

SECTION   10: PUBUCA   TlON.  This Ordinance  shall take effect  and be in full force thirty (30) days from  and after the passage  thereof,  and prior to the expiration  of fifteen  (15) days  from its passage  shall  be published   once  in the ORANGE   COAST   DAilY    PilOT,    a newspaper of  general  circulation,   printed  and published  in the City of Costa  Mesa  or, in the alternative, the  City  Clerk  may cause  to be published  a summary  of this Ordinance   and a certified  copy of the  text  of this  Ordinance   shall  be posted  in the office  of the  City Clerk  five (5) days  prior to the date  of adoption  of this Ordinance,  and within  fifteen  (15) days after adoption,  the City Clerk  shall  cause  to be published  the aforementioned    summary   and  shall  post  in the  office of the  City Clerk  a certified  copy  of this Ordinance   together  with the names  and member  of the City Council  voting  for and against  the same.

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