What’s the Difference & Why It Matters
If you own an ADU in Orange County, one of the biggest insurance questions is:
👉 “Does it matter if my ADU is attached or detached?”
👉 YES — it affects your coverage, cost, and risk.
🧱 What’s the Difference?
🏠Attached ADU
- Connected to your main home
- Shares at least one wall
👉 Example: converted garage attached to the house
🏡 Detached ADU
- Completely separate structure
- Has its own foundation
👉 Example: backyard guest house
⚠️ Why This Matters for Insurance
Insurance companies treat these VERY differently.
🛡 Attached ADU Insurance
Usually covered under:
👉 Main dwelling coverage (Coverage A)
That means:
- Included in your home’s total insured value
- Easier to insure
- Lower cost compared to detached
👉 BUT you must:
- Increase your dwelling limit to include the ADU value
🏚 Detached ADU Insurance
Covered under:
👉 Other Structures (Coverage B)
That means:
- Separate coverage limit
- Often capped (usually 10% of dwelling by default)
👉 BIG problem:
Most policies don’t have enough coverage by default
🚨 Common Mistake (VERY IMPORTANT)
👉 Homeowners don’t increase “Other Structures” coverage
Result:
❌ Underinsured ADU
❌ Partial or denied claims
đź’° Cost Differences
In Orange County:
- Attached ADU: lower increase in premium
- Detached ADU: higher cost due to:
- Separate structure
- Higher rebuild risk
đź’Ľ What If You Rent Out Your ADU?
Whether attached or detached:
👉 You NEED:
- Landlord coverage
- Loss of rental income
- Higher liability limits
⚖️ Liability Risk
Detached ADUs often have:
- Separate entrances
- Tenants or guests
👉 Higher risk of lawsuits
Recommendation:
âś” Increase liability limits
âś” Add umbrella policy
đź“Ť Serving Orange County
We help ADU owners in:
- Irvine
- Anaheim
- Santa Ana
- Westminster
- Huntington Beach
- Costa Mesa
📲 Get Your ADU Covered Right
Text me at 714-867-7799 or call the office 714-893-7271
👉 Proper structure coverage
👉 No broker fees
👉 Local ADU experts