Detached ADU Options
Maximize Your Property’s Potential in Monterey Bay
Accessory Dwelling Units (ADUs) are increasingly popular across California—and especially valuable in housing-constrained, high-demand markets like Monterey County. Among the types of ADUs, detached ADUs offer the greatest flexibility, privacy, and long-term value.
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Explore how homeowners are using these self-contained units—and which size and design tier may be right for your property.
Why Homeowners Choose Detached ADUs
01
Rental Income
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Long-term rental to tenants for steady monthly income
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Short-term vacation rental (where permitted), especially near coastal destinations like Pebble Beach or Carmel
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High ROI in markets with low vacancy rates and strong tourism
02
Multigenerational Living
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Housing for aging parents (sometimes called "granny flats")
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Adult children returning home or starting out
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Keeps families close while maintaining privacy
03
Home Office / Studio Space
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Ideal for remote work, creative studios, therapy rooms, or consulting offices
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Allows separation from main house distractions while preserving convenience
04
Guest House
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Private accommodations for out-of-town friends or family
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Adds flexibility during holidays, events, or caregiving situations
05
Private Retreat / Personal Use
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Wellness space, meditation studio, gym, art space, or reading room
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Especially appealing in coastal areas where natural light and views enhance the experience
06
Property Value Boost
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ADUs typically increase overall home resale value
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Buyers appreciate income potential, flexibility, and added square footage without expanding the main house
07
Caregiver or Staff Housing
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On-site living for nannies, housekeepers, or caregivers, especially in luxury markets like Pebble Beach
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Enables 24/7 care with privacy
Complete ADU Size Options
Tier 1:
Studio / Micro ADUs
Size Range: 150–400 sq ft​
Use Cases: Office, guest suite, short-term rental, ​wellness space
Design Features:
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Murphy bed or daybed
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Compact kitchenette
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Wet bath
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Vaulted ceilings or skylights for volume
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Sliding glass doors to expand the sense of space
Tier 3:
Large One-Bedroom or Compact Two-Bedroom ADUs
Size Range: 650–800 sq ft
Use Cases: Flexible living, professional couples, part-time rentals
Design Features
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Larger living area or bonus nook
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Dual-use den/guest space
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Walk-in shower or dual vanity bath
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Optional storage loft or built-ins
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Tier 5:
Two-Story ADUs (Up to 1,200 sq ft)
Size Range: 1,000–1,200 sq ft
Use Cases: Premium rental, multigenerational, live/work, high-value lot maximization​
Design Features
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​Bedrooms and bathrooms upstairs
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Open living/kitchen/dining downstairs
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Juliet balcony or upper deck
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Large windows for views or natural light
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Private entrance and garage or carport optional
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Separate access for STR or studio use
Tier 2:
Small One-Bedroom ADUs
Size Range: 450–650 sq ft
Use Cases: Long-term rental, aging parent housing, young adult living
Design Features:
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Separate bedroom with closet
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Galley or L-shaped kitchen
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Living/dining combo
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Full bathroom and stackable laundry
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Sliding or French doors to patio
Tier 4:
Full Two-Bedroom ADUs (Max Single-Story)
Size Range: 800–1,000 sq ft
Use Cases: Full-time rental, family housing, second home
Design Features
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Murphy bed or daybed
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Compact kitchenette
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Wet bath
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Vaulted ceilings or skylights for volume
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Sliding glass doors to expand the sense of space
Size-Specific Strategic Notes:
SIZE
KEY BENEFIT
<400 sq ft
Quicker permitting (JADU), lower cost
500–749 sq ft
Often avoids local impact fees
800 sq ft
“By-right” max size in California (no discretionary review)
1,000 sq ft
Ideal for families, without going vertical
​1,200 sq ft
Max livable space under state law — best for big lots or views
Ready to Make the Most of Your Property?
Detached ADUs offer unmatched flexibility and value—whether you're housing family, generating income, or expanding your lifestyle. Let’s explore the right option for your goals at Monterey Bay ADU.
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