18638-18638 1/2 W CALAHAN ST, Northridge, 91324
A significant building permit has been issued for the conversion of an existing garage into an attached Accessory Dwelling Unit (ADU) at 18638 W Calahan St in Northridge, Los Angeles. This project aims to create a new 530 sq. ft. living space.
The permit, issued on August 27, 2026, reflects an estimated project cost of $40,000. This provides valuable insight for homeowners in Northridge considering the investment involved in adding an ADU to their property.
Homeowners in Northridge looking to add a 530 sq. ft. ADU by converting a garage can anticipate project costs around $40,000.
Issued
August 27, 2026
Expires
—
License
1 or 2 Family Dwelling
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View the official permit record
Tracking number, work description, cost, and dates
| Tracking Number | 26016-10000-15505 |
| Work Permit # | — |
| Job Filing Number | — |
| Work Type | Bldg-Alter/Repair |
| Status | Issued |
| Job Description | PROPOSE CONVERT EXISTING GARAGE TO ATTACHED A.D.U. ONE STORY 530 SQ. FT. PER CODE GC SECTION 66323(A)(2). (2 OF 2) |
| Floor / Unit | — |
| Estimated Cost | $40,000 |
| Approved | June 11, 2026 |
| Issued | August 27, 2026 |
| Expires |
| — |
| BBL | — |
| BIN | — |