Agoura Hills offers free pre-approved ADU plans (550 sq ft studio, 750 sq ft 1-bed, 1,000 sq ft 2-bed) that permit in ~5 business days. Construction costs range from $61,800 for a garage conversion to $292,100 for a detached unit. Add Las Virgenes USD school developer fees (~$4.50/sq ft), permit fees ($2,000–$6,000), design ($0 for pre-approved plans, $2,500–$7,000 for custom), and utilities. ADUs under 750 sq ft are exempt from city development fees. Total timeline: 4–8 months from design to move-in. Average 1-bedroom ADU rents: $2,500–$3,000/month, adding $150,000–$200,000 in property value.
Agoura Hills makes ADU permitting faster and cheaper with free pre-approved plans. The city offers three standardized plan sets in three architectural styles, all code-reviewed and ready to submit. No custom design delay. No plan review fee. Your permit review takes about 5 business days.
This is a major advantage over neighboring cities. Combined with Los Angeles County's ministerial ADU approval process (required by state law), Agoura Hills is one of the faster and more affordable LA County markets for ADUs.
We've been building ADUs in Ventura County and Los Angeles County for over 20 years with 5.0 stars on Google and license #1066117. This guide covers the 2026 Agoura Hills rules in full — what the pre-approved plans offer, what you can build, fire and defensible space requirements, school fees, costs, and realistic rental income in this premium market.
The Permit Process: Pre-Approved Plans Make It Faster
Free pre-approved plans available; ministerial review through Los Angeles County Building and Safety. ~5 business days for review with pre-approved plans.
Agoura Hills provides three free pre-approved ADU plan sets designed and code-reviewed by the city:
- 550 sq ft studio: Perfect for a guest unit or rental income. Fits tight lots. No design cost.
- 750 sq ft 1-bedroom: The sweet spot for rental income. Most flexible size. Exempt from city development fees.
- 1,000 sq ft 2-bedroom: Larger units for family or higher rental income. Full fees apply.
Each plan comes in three architectural styles: Cottage, Ranch, or Spanish. Download for free from the city website or pick up at City Hall. No stamp requirement.
Your permit process is straightforward: site plan + application + chosen plans = ~5 business days review (sometimes faster). California state law (AB 68, AB 881) requires ministerial approval. The city cannot deny your ADU or add special conditions if it meets code.
Size, Setback & Height Rules
Agoura Hills allows three types of ADUs. Here are the key dimensions:
Detached ADU
Attached ADU
Junior ADU (JADU)
Fire Safety & Hillside Lots: Parts of Agoura Hills lie in wildland-urban interface (WUI) zones near the Santa Monica Mountains. If your lot is in a fire zone or on a hillside, you'll need defensible space (100 feet minimum per California law, though your local fire authority may require more), non-combustible exterior materials, and possibly fire sprinklers. Fire sprinklers are required only if the primary dwelling has them. Confirm fire requirements early with LA County Fire, Agoura Hills Station 73.
Where ADUs Are Allowed
ADUs are allowed on any residential lot in Agoura Hills with an existing or proposed primary dwelling. There is no minimum lot size requirement.
This applies to all residential zones in the city. Ministerial state law means the city cannot deny your ADU based on neighborhood preference or discretion — only code compliance.
What It Actually Costs
Here's a realistic breakdown of construction plus all permit and fee layers for Agoura Hills:
Garage Conversion (400–500 sq ft)
Attached ADU (500–700 sq ft)
Detached ADU (600–800 sq ft)
Key savings: ADUs under 750 sq ft are exempt from city development fees in Agoura Hills (saving $1,500–$3,000). Using pre-approved plans eliminates custom design costs ($2,500–$7,000). If you choose the city's free 750 sq ft 1-bedroom plan, you get no design cost + no city development fee = significant savings on smaller ADUs.
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Las Virgenes Unified School District Developer Fee
Agoura Hills is in Las Virgenes Unified School District (LVUSD), which charges a developer fee on new residential construction, including ADUs. This fee helps fund school facilities.
Current rate:~$4.50 per sq ft (2024–2025 rate)
State maximum:$5.38 per sq ft
Contact LVUSD:(818) 878-5298
Confirm current rates before finalizing your budget. LVUSD rates may be updated for 2026.
LVUSD School Developer Fee by ADU Size
Rates shown are based on ~$4.50/sq ft (2024–2025 rate). Call LVUSD at (818) 878-5298 to confirm 2026 rates.
The big advantage: ADUs under 750 sq ft are exempt from Agoura Hills city development fees, but you still pay LVUSD school fees. This makes the 750 sq ft pre-approved 1-bedroom plan ($3,375 school fee) significantly cheaper than a larger detached unit ($4,500+ school fee + city development fees).
ADU Rental Income in Agoura Hills
Agoura Hills is one of the higher-cost rental markets in Los Angeles County. Here's what the market shows:
A 600 sq ft ADU renting at $2,850/month generates:
- Monthly income: $2,850
- Annual gross income: $34,200
- Annual net income (after 8% vacancy, 8% operating expenses): ~$28,400
- Property value added: Typically $150,000–$200,000 in LA County markets
For realistic projections, assume 5–8% vacancy and 8–10% annual operating expenses (maintenance, insurance, property management if hired).
Timeline: From Design to Certificate of Occupancy
Pre-Approved Plans (Fastest)
- City permit review: 5–10 business days
- Permit issuance: 1–2 weeks
- Construction: 12–20 weeks
- Inspections & certificate of occupancy: 2–4 weeks
- Total: 4–6 months
Custom Plans
- Architecture & design: 6–8 weeks
- City permit review: 5–10 business days
- Permit issuance: 1–2 weeks
- Construction: 12–20 weeks
- Inspections & certificate of occupancy: 2–4 weeks
- Total: 6–8 months
Common Mistakes to Avoid
Not confirming fire requirements early
If your lot is in a WUI zone or hillside location, defensible space and fire-resistant materials add $5,000–$15,000. Check with LA County Fire before design.
Exceeding 750 sq ft without checking fees
ADUs under 750 sq ft save city development fees. Plan for the 550 sq ft or 750 sq ft pre-approved plans to stay under this threshold.
Using custom plans instead of pre-approved ones
The city offers free plans. Custom plans cost $2,500–$7,000 and take 6–8 weeks. Pre-approved plans are free and review in 5 days.
Forgetting LVUSD school fees
School fees apply even if city development fees don't. Budget $2,475–$4,500 depending on size.
Missing parking exemptions
Some properties qualify for parking exemptions. Ask the city first before designing for 1 parking space.
Frequently Asked Questions
How much does an ADU cost in Agoura Hills?
Total cost ranges from $61,800 for a garage conversion to $292,100 for a large detached ADU, including construction, permits, school fees, design, and utilities. Pre-approved plans save $2,500–$7,000 in design costs. Get a free instant estimate at our free cost calculator.
Are ADUs allowed on all lots in Agoura Hills?
Yes. ADUs are allowed on any residentially zoned lot with an existing or proposed primary dwelling. No minimum lot size is required.
How long does the ADU permit take in Agoura Hills?
With pre-approved plans: 5–10 business days. With custom plans: 6–8 weeks design + 5–10 business days review. Total timeline from design through construction: 4–8 months.
What is the Las Virgenes USD school developer fee?
~$4.50 per sq ft (2024–2025 rate). Call (818) 878-5298 to confirm current 2026 rate. ADUs under 750 sq ft are exempt from city development fees but not school fees.
Can I use the city's pre-approved ADU plans?
Yes. Agoura Hills provides three free plan sets (550 sq ft studio, 750 sq ft 1-bed, 1,000 sq ft 2-bed) in three styles (Cottage, Ranch, Spanish). Download from the city website or pick up at City Hall. These plans skip the plan review fee and review in ~5 business days.
Do I need fire sprinklers for my ADU in Agoura Hills?
Only if the primary dwelling has them. If your lot is in a fire zone near the Santa Monica Mountains, check with LA County Fire for defensible space and ignition-resistant material requirements. 100 feet of defensible space is required by law.
How much rent can I charge for an ADU in Agoura Hills?
Market data shows 1-bedroom rents at $2,497–$3,185/month. A well-finished 500–600 sq ft ADU typically rents for $2,500–$3,000/month, generating $30,000–$36,000 in annual gross income. ADUs add $150,000–$200,000 in property value.
Ready to Build Your Agoura Hills ADU?
We've been building ADUs in Los Angeles County and Ventura County for over 20 years. 5.0 stars on Google. Licensed & insured. We understand pre-approved plans, fire requirements, and what works in this market.