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What are the requirements to build ADU in Coronado?
Constructing an ADU in Coronado allows you to expand your living space while boosting your property value and potential resale value. For a successful ADU project, it's essential to grasp Coronado's local regulations and carefully assess the financial aspects of construction. This guide offers detailed insights into Coronado's ADU regulations and important financial considerations, aiding you in effectively planning and executing your project.
ADU regulations for properties with a single-family home
How many ADUs can you build in Coronado?
In Coronado, you can have one ADU, either within an existing or proposed single-family home, whether it's attached or detached from the primary building.
How large can an attached ADU be in Coronado?
In Coronado, an attached ADU can be up to 850 square feet for a studio or one-bedroom unit, and up to 1,000 square feet for a unit with more than one bedroom.
How large can a detached ADU be in Coronado?
The maximum size for a detached ADU in Coronado is the same as for attached ADUs, with a limit of 850 square feet for a studio or one-bedroom unit, and 1,000 square feet for a unit with more than one bedroom.
Can I build a 2-story ADU in Coronado?
No, building a 2-story ADU is not allowed in Coronado.
Is there a minimum size for an ADU?
Yes, the minimum size for an ADU in Coronado is at least 150 square feet, which is equivalent to an efficiency unit.
Can I convert the existing space to an ADU?
Yes, homeowners in Coronado can convert existing space within their property into an ADU.
What is the maximum height for an ADU?
The maximum height for an ADU in Coronado on a property with a single-family house is 16 feet.
ADU regulations for properties with a multi-family building
How many ADUs does Coronado allow for multifamily properties?
In Coronado, you can convert up to 25% of the existing multifamily units in a building into ADUs, with a minimum of one unit. Additionally, up to two detached ADUs are allowed.
How large can an attached ADU for a multifamily building be in Coronado?
An attached ADU in Coronado's multifamily buildings can reach up to 850 square feet for a studio or one-bedroom unit, and up to 1,000 square feet for a unit with more than one bedroom.
How large can a detached ADU for a multifamily building be in Coronado?
Similar to attached ADUs, the maximum size for a detached ADU in Coronado's multifamily buildings is 850 square feet for a studio or one-bedroom unit and 1,000 square feet for a unit with more than one bedroom.
Can I stack detached ADUs on top of each other?
Currently, Coronado has not provided guidelines regarding the stacking of detached ADUs on top of each other.
Can I attach two ADUs to each other?
No, in Coronado, the attachment of two ADUs to each other is not allowed. Instead, ADUs should be strictly attached to the primary building.
Can I convert the existing space to an ADU?
Yes, in Coronado, property owners in multifamily buildings have the option to convert existing space within their buildings into ADUs.
What is the maximum height for an ADU on a property with a multi-family building
Similar to single-family properties, the maximum height for an ADU in Coronado on a property with a multifamily building is also 16 feet.
What ADU types are allowed to build in Coronado?
Coronado offers several ADU options for homeowners, including:
A. Detached ADU: A separate building that stands alone, apart from the main home.
B. Attached ADU: A unit that is physically attached or integrated into the primary residence.
C. Converted ADU: Turning existing non-livable spaces, such as a garage or shed, into livable areas with key features like kitchens and bathrooms.
Homeowners have the choice to either build a new ADU or convert an existing structure. Converting a space like a garage or shed may provide advantages, such as fewer zoning limitations (like setback or height restrictions) and the potential for smaller projects. However, renovating older structures could uncover unforeseen problems that may increase costs.
ADU setbacks from the property lines and other buildings
What are the required setbacks for an ADU in Coronado?
ADUs in Coronado should have a minimum setback of 4 feet from the rear and side property lines, or the relevant setback for the zone district, whichever is less. Regulations for corner or through lots are not specified.
What is the minimum distance the ADU must be from existing structures?
Coronado hasn't set a specific minimum distance for ADUs from existing structures, but generally, many cities require a 6-foot separation.
Are setbacks required when converting existing structures into ADU?
No, setbacks are not required when converting existing structures into ADUs in Coronado.
Can I build an ADU in the front yard of my house in Coronado?
An ADU can be constructed in the front yard, provided there is no other possible spot on the property for an ADU of at least 800 square feet. Zoning setback regulations should be followed.
Design requirements
How many bedrooms can an ADU have?
An ADU in Coronado should have at least one bedroom unless it's designed as a studio unit.
Does an ADU need to have a kitchen?
In Coronado, ADUs are required to have full kitchens, unlike the more basic efficiency kitchens typically found in JADUs.
Does an ADU require independent utility meters?
Yes, ADUs in Coronado should have a new or independent utility connection directly between the ADU and the utility provider.
What is the minimum ceiling height?
In Coronado, the minimum ceiling height required by the California Building Code for habitable spaces, including ADUs, is 7 feet.
Find out the maximum ADU size for your property here
The parking requirements for ADU
What is the parking requirement for an ADU in Coronado?
Each ADU in Coronado is required to have a maximum of one parking space.
Where can I have a parking space on my property?
Parking for ADUs in Coronado can be tandem and placed in the side or rear yard setback areas, covered or not. If within the front yard setback, it should be in existing driveways. If an ADU replaces parking, replacements are needed, which can also be in the side and rear yard setback areas.
How to get permits for your ADU
How long does it take to get an ADU permit in Coronado?
In Coronado, obtaining an ADU permit generally takes about 3.5 to 4 months. It’s recommended to meet with a city planner before submitting your plans to ensure compliance with all requirements.
Once the plans are submitted and fees are paid, the city has 60 days to determine if the application is complete. If there’s no response within this time, the permit will be automatically approved. If revisions are necessary, you should update and resubmit the plans. Incomplete applications won’t be rejected, but any missing details should be addressed. The estimated Plan Check fee for ADUs in Coronado is approximately $765.
Does Coronado require in-person submission of plans for an ADU?
Yes, in Coronado, plans for ADUs need to be submitted to the city's Planning Division, as electronic submission is not an option yet. These plans should show compliance with local zoning regulations and guidelines.
Does Coronado require coastal development permits?
Yes, since Coronado is located entirely within the Coastal Zone, coastal development permits are required.
When do you need a licensed professional to design an ADU in Coronado?
The need for a licensed professional to design an ADU in Coronado varies based on the project's complexity.
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How much does it cost to build an ADU in Coronado?
Constructing an ADU in Coronado typically costs about $325 per square foot, encompassing expenses for permits, architectural design, and engineering services. For instance, building a 900-square-foot ADU would generally cost around $330,000, which includes both soft and hard costs.
Is it profitable to build an ADU in Coronado?
To determine the financial viability of building an ADU in Coronado, it's essential to compare construction costs with local real estate market values. For example, a 900-square-foot ADU might be valued at around $700,000. Given the construction cost of $330,000, this indicates a potential return on investment of 110%.
Additionally, profitability can also be influenced by potential rental income or the advantages of housing family members on the same property.
Can you sell an ADU in Coronado?
California's AB 1033 allows local jurisdictions to set guidelines for selling ADUs and primary residences as condominiums, provided they adhere to current development standards.
In Coronado, the sale of ADUs is regulated by local laws. An ADU can be sold if constructed by an accredited nonprofit organization, if there is a documented tenancy-in-common agreement, or if the city approves the separate sale of the ADU and primary home as distinct condominiums.
Are ADUs rent-controlled in Coronado?
No, in Coronado, ADUs are not subject to rent control laws. As new constructions, they are exempt from regulations like AB 1482, which allows landlords to increase rents annually. Typically, this exemption applies to buildings aged at least 15 years.
How do I get money to build an ADU in Coronado?
To obtain financial support for building an ADU in Coronado, homeowners can consider the CalHFA's ADU grant program managed by the California Community Economic Development Association (CCEDA). This program provides grants of $40,000 to eligible homeowners, intended to cover pre-construction expenses related to ADU construction. Notably, 54% of these grants are allocated to low-income households, promoting affordability.
Find out how much value an ADU could add to your property.
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