Can I have multiple ADUs on one lot in Fremont?

Hello,

Thank you for reaching out with your questions about adding multiple Accessory Dwelling Units (ADUs) to your property in Fremont, CA. Let’s dive into the specifics of what’s possible and how you can move forward with your plans.

### Multiple ADUs on a Single Lot

In Fremont, as in many parts of California, recent legislation has made it easier to add ADUs to residential properties. The key state laws influencing ADUs are SB-9 and AB-68, which aim to increase housing density and flexibility. Here’s how they apply to your situation:

1. **Number of ADUs**: On a single-family zoned lot, you can generally add one detached ADU and one Junior ADU (JADU). However, since your lot is 10,000 sq ft, which is substantial, you might have more flexibility under Fremont’s local ordinances, especially if your zoning permits multifamily development. It’s essential to check your specific zoning designation with the Fremont Planning Division.

2. **Zoning Regulations**: Fremont’s zoning code typically allows for one ADU and one JADU on single-family lots. However, if your property is zoned for multifamily use, you might be permitted to add more than one ADU. It’s crucial to consult the City of Fremont’s Planning Division or check online zoning maps to see what your property is zoned for.

### Budget and Feasibility

With a $300,000 budget, your project is feasible for constructing multiple ADUs, but cost management will be critical:

1. **Costs**: The cost per square foot for ADU construction in Fremont can range from $250 to $400, depending on finishes and design complexity. You could potentially build two smaller ADUs or one larger ADU and a JADU within your budget. For instance, a 750 sq ft ADU might cost around $187,500 to $300,000. A JADU, being smaller and often involving conversion of existing space, can be more budget-friendly.

2. **Permitting Process**: The permitting process for multiple ADUs will be slightly more involved than for a single unit. Expect to pay for separate permits for each unit, which in Fremont can range from $8,000 to $15,000 per ADU, including impact fees, though JADUs often have reduced or waived fees.

### Timeline

1. **Design and Permits**: Expect the design and permitting phase to take 3-6 months. Fremont’s Planning Division is generally efficient, but the timeline can vary based on workload and project complexity.

2. **Construction**: Building can take an additional 6-12 months, depending on the scope of work and contractor availability.

### Size and Height Restrictions

1. **Size Limits**: Fremont generally allows ADUs up to 1,200 sq ft, but this can depend on lot size and zoning. JADUs are typically limited to 500 sq ft.

2. **Height Restrictions**: Detached ADUs can be up to 16 feet in height, aligning with California state law, but local ordinances might allow for exceptions.

### Practical Steps

1. **Consultation**: Start with a consultation with a local architect or ADU specialist familiar with Fremont’s regulations. They can provide a tailored plan based on your lot and budget.

2. **Check Zoning**: Use Fremont’s online GIS mapping tool or contact the Planning Division to confirm your lot’s zoning and any specific rules.

3. **Design and Engineering**: Engage a designer or architect to develop plans. Consider pre-approved ADU designs which can expedite the permitting process.

4. **Hiring a Contractor**: Once permits are in place, hire a licensed contractor with experience in ADUs. Ensure they have references and a good track record in Fremont.

### Tips and Warnings

- **Be Aware of Setbacks**: Fremont requires minimum setbacks, typically 4 feet from side and rear property lines, but verify specifics for your zone.
- **Utilities**: Consider the cost and logistics of connecting new ADUs to existing utilities. This can be a significant expense if upgrades are needed.
- **HOA Restrictions**: If applicable, check your homeowners’ association rules, as they might have additional restrictions.

### Next Steps

1. **Contact Fremont’s Planning Division**: To get the most current and applicable information for your property.
2. **Hire a Professional**: Engage an ADU consultant or architect early to streamline the process.
3. **Explore Financing Options**: If your budget is tight, look into ADU-specific loans or grants that might be available.

By following these steps and leveraging local resources, you’ll be well on your way to successfully adding multiple ADUs to your Fremont property. Good luck with your project, and feel free to reach out with more questions!

Best Regards,

[Your Name]
Experienced ADU Consultant