ADU Owner Occupancy: Cedar Park vs Round Rock
How do adu owner occupancy rules compare between Cedar Park, TX and Round Rock, TX?
Cedar Park, TX
Williamson County
Cedar Park requires that the ADU and principal dwelling be owned by the same person(s), occupied by members of the same immediate family (or authorized employees), and share a single address and mailbox. This is an absolute owner-occupancy/common-ownership rule, not a discretionary one.
View full Cedar Park rules →Round Rock, TX
Williamson County
No data available yet for Round Rock.
Key Facts Comparison
| Fact | Cedar Park | Round Rock |
|---|---|---|
| Common ownership | Required | - |
| Shared address/mailbox | Required | - |
| Separate utilities | Prohibited | - |
| Allowed occupants | Owner family or authorized employees | - |
| Citation | Article 11.04 Division 2 | - |
Highlighted rows indicate differences between cities.
Cedar Park FAQ
Do I have to live in the principal dwelling to have an ADU in Cedar Park?
Yes — the ADU and principal dwelling must be owned by the same person(s) and occupied by that owner's immediate family or authorized employees. The ADU is an incidental residential use, not a stand-alone residence.
Can the ADU have its own water meter or electric account?
No. Article 11.04 Division 2 prohibits separately providing water, wastewater, or electrical utilities to the ADU. All services must be on the principal dwelling's accounts.
Can I rent the principal house and live in the ADU?
No. Article 11.04 Division 2's rental ban applies to both the ADU and any arrangement that effectively rents the principal dwelling while the owner lives in the ADU as a separate household. The two units cannot be operated as separate rental households.
Round Rock FAQ
No FAQs available.
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