STATEWIDE UPDATE: New California ADU Bills SB13, AB68, AB881, AB670 have passed. These laws will create more options for building an ADU in Marina in 2020. To prepare for the upcoming changes use our ADU Services to learn how these laws will affect your property!
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Marina ADUs

Everything about building Accessory Dwelling Units in Marina, CA

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Marina ADU Guidelines Last Updated 08/11/19

codes

The city government of Marina will approve ADUs under California's statewide mandated regulations.
The California Building Code (CBC) 2016 is adopted with the following amendment(s): 42491
Relevant state bill updates for SB13, AB68, AB881, AB670 are shown in green below.


hintsights

City Hint: The city has not yet responded to requests for ADU permit volumes for the past year, but they will be provided here once response has been received.


Zoning

Number of ADUs allowed:

One accessory dwelling unit (ADU) is allowed per lot, if the lot is zoned for single family residential use and a primary dwelling exists on the property or is approved to be constructed in connection with the ADU. ~ State Standards

AB68 & AB881 Update: Properties which convert existing space to create ADUs may be eligible for one ADU -AND- one JADU.

Types of ADUs allowed:

Construction of new detached and attached ADUs as well as conversions of garages, secondary structures, conversion of existing space within a primary dwelling is permitted. ~ State Standards

Lot size:

No minimum lot size is required to develop an ADU, other than any, required by the underlying zoning district. ~ State Standards

AB68 & AB881 Update: Properties will not be subject to minimum lot standards by ordinance or of the applicable zoning district.

ADU size:

For detached ADUs, the total floor area of the unit shall not exceed 1,200 square feet. The increased floor area of an attached ADU shall not exceed 50 percent of the existing living area of the primary dwelling with a maximum increase of 1,200 square feet in floor area. No maximum floor area for conversions or existing space is established. The maximum floor area for a 'junior' ADU is 500 square feet. The minimum floor area for any ADU is 150 square feet. ~ State Standards

AB68 & AB881 Update: Properties will be allowed up to 850 square feet for a one bedroom or up to 1,000 square feet for a two bedroom ADU.

Setbacks:

No setback shall be required for an existing garage that is converted to an accessory dwelling unit, and a setback of no more than five feet from the side and rear lot lines shall be required for an accessory dwelling unit that is constructed above a garage. Outside of these circumstances, setbacks for ADUs shall comply with the development standards of the underlying zone. ~ State Standards

AB68 & AB881 Update: The maximum required setback for a detached new construction ADU shall be no more than 4 feet from the rear or side property lines.

Parking:

Parking required for the establishment of an ADU shall not exceed one parking space per unit, plus one additional space per additional bedroom. These spaces may be provided as 'tandem' parking on an existing driveway. The ADU shall be exempt from all parking requirements if the property is located within 0.5 mile walking distance of a public transportation station. ~ State Standards

AB68 & AB881 Update: Properties which convert an existing garage will not be subject to replacement parking requirements.

Fire Safety:

Accessory dwelling units shall not be required to provide fire sprinklers unless they are also required for the primary dwelling. ~ State Standards

Shape, materials and style:

Specific design styles and restrictions are not specified under State Standards. Passageways shall not be required in conjunction with the construction of an accessory dwelling unit. ~ State Standards

Height:

The maximum height of an ADU is not specified in the state standards. If ADU maximum height is not established locally, the height limitations of the underlying zone shall apply. ~ State Standards

Design review:

The municipality shall provide a ministerial review process which is not based on a discretionary approval for an ADU. The process shall take no less than 120 days. Valid applications submitted for ADUs, if not approved or denied within 120 days from submission, shall be considered approved. ~ State Standards

Number of Bedrooms:

No maximum number of bedrooms is established other than that implied by the maximum size of an ADU allowed. ~ State Standards

Ownership:

The ADU may be rented but shall not be intended for sale separate from the primary dwelling. ~ State Standards

SB13 Update: Owner-occupancy requirements for ADUs will be voided statewide for 5 years.

Utility connections:

Connection and utility fees shall be reasonable, and shall not be disproportionately higher than those to develop primary dwellings, so as not to deter the development of ADUs. If a private sewage disposal system is used, such as a septic system, review and approval by a local health officer may be required. ~ State Standards

Residential Building Code:

The California Building Code (CBC) 2016 is adopted with the following amendment(s): 42491

Marina ADU Marketplace

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Costs / ROI

APPRECIATION ESTIMATE

* upon completion of ADU

CONSTRUCTION COST ESTIMATE

* based on local average price per sqft

RENTAL ESTIMATE

* estimated by location

MORTGAGE ESTIMATE

* 30 years / 5% interest rate / 20% down payment

BASED ON LOCAL AVERAGE PROPERTY DATA & VALUE

Appreciation Estimate = (Base Value: $) / (Home's Living Space: sqft) * (ADU's Living Space: sqft)

Rental Estimate = (Rent Per Sqft: $2.96) * (ADU's Living Space: sqft)




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