Hybrid property map
Property possibility reportConfirmed report
Your Property's Possibilities, Clearly Mapped
9626 Gierson Ave Chatsworth 91311
Existing building
2454
Zoning
RE11-1
Lot area · sq ft
11004
Backyard depth · ft
41
Rear lot width · ft
84
Backyard area · sq ft
3398
Perimeter · ft
431
Transportation map
Street view
ZIMAS property map
Possibility 01 · Extra units
Conceptually feasibleDetached Accessory Dwelling Unit
Two detached ADU approaches are mapped against the backyard, setbacks, and separation from the existing house. Only concepts that fit the preliminary mapped envelope are shown.
Option A · One-story detached ADU
A compact first-floor concept sized to the usable yard. Construction is estimated at $215–$235 per square foot.
Option B · Two-story detached ADU
A smaller footprint preserves more yard while providing two floors. Construction is estimated at $225–$245 per square foot.
Preliminary project cost estimateDetached ADU
Architectural design + permit drawings$4–$6 / sq ft
Structural design + engineering$1–$2.50 / sq ft
Title 24 energy compliance$300 flat
Survey + site plan$1,800–$2,500
Permit coordination$1,500 / permit
Plan check + permit allowance$2,000–$20,000
Design + permit range$11,600–$34,500
Combined planning range$341,600–$484,500
Completed project exampleHatteras One-Bedroom ADU Conversion
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