3425 N Marengo Avenue, Altadena: Accessory dwelling unit (ADU) After the Eaton Fire
Accessory dwelling unit (ADU) at 3425 N Marengo Avenue, Altadena, after the January 2025 Eaton Fire, filed August 15, 2025. Its full plans are in review. Builtie follows every fire rebuild in Los Angeles, address by address.
The same four steps, whether the buyer is a builder, a designer, an owner or a company you want to acquire.
The rebuild
| Address | 3425 N Marengo Avenue, Altadena, CA |
| Fire | Eaton Fire, January 2025 |
| Permits from | unincorporated Los Angeles County |
| Rebuild | Accessory dwelling unit (ADU) |
| Where it stands | Full building plans received |
| Application filed | August 15, 2025 |
| Stated construction value | $500K to $1M |
Read from the Los Angeles County's fire recovery records for 3425 N Marengo Avenue. Owners, applicants and case numbers are left out.
Rebuild progress
| County rebuild progress | |
|---|---|
| ✓ | Rebuild application received |
| ✓ | Zoning review cleared |
| ✓ | Full building plans received (now) |
| Building plans approved | |
| Building permit issued | |
| Rebuild in construction | |
| Construction completed |
The County tracks every fire rebuild through these seven steps. 3425 N Marengo Avenue is at step 3: full building plans received.
Other rebuilds on N Marengo Avenue
- 3345 N Marengo Avenue: Single-family home rebuild, zoning cleared
- 3452 N Marengo Avenue: Single-family home rebuild, plans approved
- 3455 N Marengo Avenue: Single-family home rebuild, under construction
- 3462 N Marengo Avenue: Single-family home rebuild, zoning cleared
- 3475 N Marengo Avenue: Single-family home rebuild, under construction
- 3476 N Marengo Avenue: Single-family home rebuild, under construction
- 3492 N Marengo Avenue: Single-family home rebuild, under construction
- 3507 N Marengo Avenue: Single-family home rebuild, under construction
All of them: fire rebuilds on N Marengo Avenue, Altadena. The whole area: the Altadena and Pasadena Eaton Fire rebuild tracker.
For contractors
Builtie follows the fire rebuilds across Los Angeles, from Pacific Palisades to Altadena, and shows a trade which rebuilds are at the point where its work is bought. Where a permit names the builder, Builtie attaches the decision makers and their verified contacts.
Plans
Builtie's Starter plan is $79 per seat per month (CAD) for 20 projects; Growth is $99 for 50 projects and adds the LinkedIn and email outreach you run yourself. Opening a project spends one credit, and the decision makers, emails, phones and AI call script inside it are included. Your monthly credits reset at each renewal, and extra credit packs are valid for 30 days. The free trial runs 7 days with 10 projects. Custom, where Builtie's team runs the outreach for you, starts from CAD $1,500 a month on top of a Growth seat.
Frequently asked questions
What is being rebuilt at 3425 N Marengo Avenue, Altadena?
Accessory dwelling unit (ADU), after the Eaton Fire of January 2025.
What is the status of the rebuild at 3425 N Marengo Avenue?
Full building plans received, read October 20, 2026.
What does Builtie cost?
Starter is $79 per seat per month (CAD) for 20 projects; Growth is $99 for 50 projects and adds LinkedIn and email outreach. There is a 7-day free trial with 10 projects.