ADU Permits: Cedar Park vs Round Rock
How do adu permits rules compare between Cedar Park, TX and Round Rock, TX?
Cedar Park, TX
Williamson County
Building an ADU in Cedar Park requires a two-step approval: (1) a Conditional Use Permit (CUP) approved by the Planning & Zoning Commission and City Council under Article 11.02 Division 4, and (2) a residential building permit under Article 3.02. Detached accessory buildings over 80 sq ft always require a building permit.
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 |
|---|---|---|
| Conditional use permit | Required (P&Z + Council) | - |
| Building permit | Required (Art. 3.02) | - |
| 80 sq ft exemption | Does not apply to ADUs | - |
| Permitting authority | Development Services Dept. | - |
| Fee schedule | Code Appendix A, Article 2.000 | - |
Highlighted rows indicate differences between cities.
Cedar Park FAQ
What permits do I need to build an ADU in Cedar Park?
Two: a Conditional Use Permit approved by the Planning & Zoning Commission and City Council under Article 11.02 Division 4, plus a residential building permit issued by the Development Services Department under Article 3.02. The 80-sq-ft permit exemption for sheds does not apply to ADUs.
Where do I apply?
Cedar Park Development Services Department, 450 Cypress Creek Road, Building One, or online via the Cedar Park residential permits portal at cedarparktexas.gov/516/Residential-Permits.
How long does the conditional use process take?
Conditional use applications require public notice and a public hearing before P&Z, followed by a City Council decision — typically 60-90 days from a complete application, though timing depends on Council scheduling.
Round Rock FAQ
No FAQs available.
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