San Diego Bonus ADU Program Changes (2025) – New Rules & How to Qualify
The San Diego Bonus ADU Program has helped homeowners and investors maximize their properties by allowing additional Accessory Dwelling Units (ADUs). However, as of March 2025, the City of San Diego has rolled back key parts of the program, affecting where and how many ADUs you can build.
If you're planning an ADU project in 2025, here’s everything you need to know about these new regulations and how to still qualify for extra units.
What Is the Bonus ADU Program in San Diego?
Under California state law, homeowners can build:
✔ One ADU (Accessory Dwelling Unit)
✔ One JADU (Junior Accessory Dwelling Unit, converted from existing space in the main home)
San Diego’s Bonus ADU Program previously allowed additional ADUs if homeowners agreed to designate some as affordable housing. However, concerns about overdevelopment, parking, and infrastructure strain have led to new restrictions in 2025.
What’s Changing in the Bonus ADU Program (March 2025)?
📌 On March 4, 2025, the San Diego City Council voted 6-3 to reduce the number of bonus ADUs allowed. Here are the biggest changes:
🔹 No Bonus ADUs in Certain Zones – The program has been eliminated in these eight single-family zones:
RS-1-1, RS-1-2, RS-1-3, RS-1-4, RS-1-8, RS-1-9, RS-1-10, RS-1-11
🔹 Bonus ADUs Still Allowed in Some Areas – The program will remain in RS-1-5, RS-1-6, and RS-1-7, where officials say high-density development is better suited.
🔹 More Fees & Requirements – The city is adding parking requirements, infrastructure fees, and stricter fire safety regulations for new ADU projects.
🔹 Final Vote Coming Soon – A final vote on the rollback is expected in May or June 2025, with additional restrictions potentially coming in late summer or fall 2025.
💡 Want to know if your property qualifies? Book a free feasibility study call today → Schedule Your Call Here
Can You Still Build Bonus ADUs in San Diego?
If you're in a Sustainable Development Area (SDA) or a Transit Priority Area (TPA), you may still qualify for extra ADUs under the revised program. However, zoning, setbacks, and floor area ratio (FAR) limits still apply.
The best way to know how many ADUs you can build on your property? ✅ Get a professional feasibility study.
What This Means for Homeowners & Investors
If you planned to build multiple ADUs, these changes could impact your strategy. Investors should pay close attention to:
🏡 Lot Size & Zoning Restrictions – Smaller lots may no longer qualify for multiple units.
🚗 Parking Requirements – If your property is not in a Transit Priority Area, you may now need to provide additional parking.
🔥 Fire & Safety Rules – New regulations could limit ADUs in High Fire Hazard zones.
💡 Need expert advice? We help homeowners navigate these changes and maximize their property’s potential.
📅 Click here to book a free consultation
Next Steps: How to Move Forward with Your ADU Project
With these new restrictions, it’s more important than ever to plan your project strategically.
✅ Step 1: Check If Your Property Qualifies – We can analyze your lot and zoning restrictions.
✅ Step 2: Get a Feasibility Study – This will show how many ADUs you can build and estimate costs.
✅ Step 3: Submit Plans Before Additional Rules Take Effect – Acting fast could help you lock in approvals before future restrictions.
🔹 Read more details in our in-depth ADU blog:
📖 Click here to read the full blog
Final Thoughts: What You Should Do Now
The San Diego Bonus ADU Program is changing fast, but there are still opportunities for homeowners and investors. By acting quickly and working with ADU experts, you can maximize your property’s value and rental income potential.
🚀 Want expert guidance? Let’s map out your best options before the next round of restrictions takes effect.
