Pasadena's historic neighborhoods and specific design guidelines make ADU construction unique. Here's what you need to know.
Pasadena ADU Regulations
Pasadena has its own ADU ordinance separate from State law. Maximum size is 1,200 sq ft for detached ADUs. Historic districts have additional design review requirements. Setbacks and height limits vary by zone.
Pasadena ADU Costs
New construction ADUs: $350-$500 per sq ft. Garage conversions: $80,000-$180,000. Detached new builds: $250,000-$450,000+. Add 10-15% for historic district compliance.
Pasadena ADU Timeline
Permits: 2-4 months (longer in historic districts). Construction: 4-8 months depending on size. Total project: 6-12 months.
Final Thoughts
Pasadena ADUs require navigating both State law and local regulations. Historic district properties need extra planning time and design consideration.
Build this in Pasadena
One team designs, permits and builds in Pasadena. Start with the page for your project:
Frequently Asked Questions
Can I build an ADU in Pasadena's historic district?
Yes, but you'll need design review approval which adds time and may require specific architectural elements.
What's the maximum ADU size in Pasadena?
1,200 sq ft for detached ADUs, though lot coverage limits may reduce this.
Topics
- pasadena
- adu
- accessory dwelling unit
- garage conversion
- local
About the author
Remodel Your Vibe Design Team
Written by the design team at Remodel Your Vibe, a licensed (CSLB #1119054 (opens the CSLB license record in a new tab)), bonded and insured, veteran-owned and family-operated design-build company based in Los Angeles. Our own crews design, permit and build pools, backyards, ADUs and interiors across Greater Los Angeles and Orange County.
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