ADU Rules: Austin vs Pflugerville
How do adu rules rules compare between Austin, TX and Pflugerville, TX?
Austin has fewer restrictions than Pflugerville.
Austin, TX
Travis County
Austin's HOME Initiative (Ord. 20231207-001, effective Feb 5, 2024) allows up to 3 housing units, including ADUs and tiny homes, on lots zoned SF-1, SF-2, and SF-3.
View full Austin rules →Pflugerville, TX
Travis County
Unincorporated Travis County has no zoning authority and therefore no ADU restrictions beyond septic/OSSF rules. Austin allows ADUs on most SF lots under HOME Initiative amendments (2023-2024) with reduced lot size, setback, and parking requirements. ADUs up to 1,100 sq ft permitted by right in Austin SF-1/2/3 zones.
View full Pflugerville rules →Key Facts Comparison
| Fact | Austin | Pflugerville |
|---|---|---|
| Max Units | 3 per SF-1/SF-2/SF-3 lot | - |
| Ordinance | 20231207-001 (HOME) | - |
| Effective | Feb 5, 2024 | - |
| Min Lot (Phase 2) | 1,800 sq ft | - |
| Tiny Home | 400 sq ft or less | - |
| County | - | No zoning, septic limits only |
| Austin | - | 3 units, 1,100 sf ADU |
| Austin Setback | - | 5 ft side/rear |
| Parking | - | Not required in Austin |
| Septic | - | TCEQ 30 TAC 285 |
Highlighted rows indicate differences between cities.
Austin FAQ
How many units can I build on my Austin SF lot?
Up to 3 housing units on lots zoned SF-1, SF-2, or SF-3 under the HOME Initiative effective Feb 5, 2024.
Did Austin remove the unrelated-adults occupancy cap?
Yes. HOME Phase 1 removed restrictions on the number of unrelated adults living in a housing unit.
Pflugerville FAQ
Can I build an ADU on my unincorporated Travis County lot?
Yes, subject only to septic capacity (TCEQ 285) and deed restrictions. No county zoning or size limits apply.
Did Austin really allow 3 units on single-family lots?
Yes. The HOME Initiative (2023-2024) allows up to 3 units on most SF-zoned lots with reduced setbacks and no parking requirements.
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