Accessory Dwelling Units (ADUs)
A site plan submittal is required when applying for a permit involving an ADU.
Upon payment of all fees and evidence of a city building permit, a sewer permit may be issued to the party contracted to do the underground construction.
After obtaining a permit, call 24 hours before beginning sewer construction to schedule an inspection.
Read our ADU Fact Sheet for answers to frequently asked questions and connection examples
Accessory Dwelling Unit Application
Homeowner Information Brochure
Permit Fees and Deposit:
| Permit Fee | $50.00 | |
| Inspection Fees: | ||
| - Property Line to Building | $150.00 | |
| - Main to Property Line (unless previously existing/inspected) | $150.00 | |
| Subtotal | $350.00 | |
| Deposit (refundable after acceptance) | $500.00 | |
| Total Fees and Deposit: | $850.00 |
The Capacity Fee for Accessory Dwelling Units is $5.88 per square foot (effective 8/1/2024 through 7/31/2025)
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6. Attach to an email and send to permits@unionsanitary.ca.gov
