Introduction
The trend of building Accessory Dwelling Units (ADUs) in San Marcos, California, has gained momentum as homeowners recognize the potential to enhance their property value, accommodate extended family, or generate rental income. Partnering with the right ADU builders and understanding the local construction and rental processes are crucial to ensure a successful and compliant ADU project. This resource page aims to provide essential information to guide you through the nuances of ADU development in San Marcos, emphasizing the importance of choosing experienced builders like It’s ADU for a seamless experience.
Essential ADU Rules for San Marcos
What you can build
- Maximum size
Single-family properties in San Marcos allow one ADU and one JADU, with ADUs up to 850 sq ft for one bedroom and 1000 sq ft for multiple bedrooms. Multifamily properties can add two detached ADUs and convert specific non-livable spaces.
- Side / rear setbacks
Detached ADUs require a four-foot setback from side and rear property lines. Converted ADUs don’t need extra setbacks if they meet fire and safety standards.
- Two story
Allowed above garages, subject to height and zoning rules
- Building separation
Mandated 10-foot separation between ADUs and existing structures.
Permitting timeline
- Standard
4-6 months.
- Coastal
Not required.
Choosing the Right ADU Builder in San Marcos
Selecting a builder experienced in ADUs is pivotal for navigating San Marcos’s specific zoning laws, design considerations, and regulatory landscape efficiently. It’s ADU stands out as the premier choice, offering an in-house, one-stop-shop solution for ADU projects. Our expertise in local zoning knowledge, design aptitude, and proficiency in managing city regulations ensures a streamlined process from conception to completion, making It’s ADU the best choice for ADU construction in San Marcos.
San Marcos ADU Construction Process
The construction process for an ADU in San Marcos involves several key phases:
- Initial Consultation and Feasibility Study
Assessing property eligibility, zoning requirements, and project viability.
- Design and Planning
Creating a design that meets the homeowner’s needs while adhering to local codes.
- Permitting
Submitting detailed plans to the city for approval, including addressing any required surveys or reports.
- Construction
Starting with site preparation, followed by foundation laying, framing, and installation of utilities, roofing, and interiors.
- Inspection and Completion
Undergoing city inspections to ensure compliance with building standards before final turnover.
This overview highlights the importance of compliance at every step, ensuring a smooth journey from concept to completion.
Building Your ADU in San Marcos
How many ADUs are allowed in San Marcos?
The number of Accessory Dwelling Units (ADUs) allowed in San Marcos varies based on property type and zoning regulations. Single-family properties typically permit one ADU per property, with potential for a Junior ADU (JADU) if owner-occupied. Properties with multiple dwelling units may accommodate up to two detached ADUs and convert habitable and non-habitable spaces into ADUs.
Can ADUs be rented out in San Marcos?
Yes, in San Marcos, ADUs can be rented out, but only for periods longer than 30 days, prohibiting short-term rentals. Importantly, there is no owner-occupancy requirement for ADU applications submitted from January 1, 2020, to January 1, 2025, facilitating property owners’ ability to rent out their ADUs without the need to reside on the property themselves.
What are the specific allowances for ADUs on multifamily properties in San Marcos?
In San Marcos, multifamily properties can have up to two detached ADUs. Existing multifamily structures can convert non-livable spaces into attached ADUs, capped at 25% of existing units. Detached ADUs can reach up to 850 sq ft for one bedroom or 1000 sq ft for multiple bedrooms, with a maximum height of 16 feet and typically limited to one story unless above a garage. Architectural compatibility with the primary dwelling is required. These regulations aim to expand housing options while complying with local zoning and building standards.
Renting Your ADU in San Marcos
Renting out an ADU in San Marcos offers homeowners a valuable opportunity to generate income or provide housing for family members. Understanding local market dynamics, rental income potential, and landlord responsibilities is crucial. Homeowners must consider utility provisions and the potential for separate mailing addresses to ensure the ADU’s rental readiness. Consulting with experienced builders and the city planning department can provide insights into optimizing your ADU for rental purposes while complying with local regulations.
Neighborhoods: Barham Discovery Community, Felicita, Lake Hodges, Lake San Marcos, Leucadia, Palomar Estates, San Elijo, San Marcos, Vista Valley, Vineyard, West Ridge.
| Zip | 1BR | 2BR | 3BR |
|---|---|---|---|
| 92024 | $2,739 | $3,882 | $5,547 |
| 92029 | $2,387 | $2,634 | $3,303 |
| 92069 | $2,078 | $2,530 | $3,306 |
| 92078 | $2,206 | $2,992 | $3,306 |
Calculate Your ADU Cost in San Marcos
Curious about the cost of your ADU in San Marcos? Find out quickly with our interactive calculator. This tool is designed to give you a rough estimate.
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*The costs we are calculating here are an average for time and materials. This calculator is meant to provide an estimate to educate you on the ADU building process, please note that this is not a final quote.
Summary
Building and renting out an ADU in San Marcos presents a promising avenue for homeowners to maximize their property’s value and functionality. Partnering with It’s ADU, a builder experienced in local ADU projects, ensures a smooth, compliant, and efficient development process. By understanding the key rules, engaging in the detailed construction process, and considering rental logistics, homeowners can successfully navigate the ADU journey. We encourage you to leverage this information and consult with both experienced ADU builders and San Marcos’s planning department to realize the full potential of your ADU project.
