What was permitted
This permit authorizes the attachment of a new garage to an existing house, along with the conversion of that garage into a new SB9 unit, effectively creating a duplex in Chatsworth - Porter Ranch. This project includes the installation of fire sprinklers throughout.
Issued on April 29, 2026, the estimated cost for this significant addition and conversion project is $79,323. This figure provides a substantial data point for homeowners considering similar accessory dwelling unit (ADU) or duplex conversions under SB9 regulations.
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View the official permit record
Tracking number, work description, cost and dates
View the official permit record
Tracking number, work description, cost and dates
| Tracking number | 26014-20000-00332 |
|---|---|
| Work permit # | — |
| Job filing number | — |
| Work type | Bldg-Addition |
| Status | Issued |
| Job description | EPLAN: attach (E)garage to house with NEW BREEZEWAY and convert (E) garage to NEW SB9 UNIT resulting in (N) duplex*NFPA-13D fire sprinklers thur-out* |
| Floor / unit | — |
| Estimated cost | $79,323 |
| Approved | January 29, 2026 |
| Issued | April 29, 2026 |
| Expires | — |
| BBL | — |
| BIN | — |
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