Mammoth Construction, LLC
Mammoth Construction, LLC has filed 4 building permits in Austin since 2025, closing 50% of 2 rated permits. 2 permits remain open. Primarily files building permits. 44.2 points below the city median of 94.2%. Busiest year: 2025 with 3 permits.
50%
4
Construction Permits
2
Currently Open
2
Rate-Eligible
permits > 1yr old
2025–2026
Years Active
Closure rate based on permits older than 1 year. "Issued" and "Stop Work" statuses are excluded.
Performance by Permit Type
Building2 rated
50.0% closed vs 93% median, 43.1 points lower
Median based on all applicants with 20+ rated permits in each category. Only permits older than 1 year are rated.
Year-by-Year Summary
2026(YTD)
—
Open1
Closed0
Too early to rate — permits need 1 year to mature
2025
50.0%
Open1
Closed2
1 closed / 2 rated
All Permits
4 permits
| Status | Permit # | Address | Issued▼ | |||
|---|---|---|---|---|---|---|
| Open | 2025-088848 BP | Building Permit | 1609 ALAMO ST, AUSTIN | Jul 16, 2026<1yr | Feb 15, 2027 | $1 |
| Closed | 2025-119673 BP | Building Permit | 11589 JOLLYVILLE RD, AUSTIN | Sep 26, 2025<1yr | Oct 29, 2025 | — |
| Open | 2025-088847 BP | Building Permit | 1609 ALAMO ST, AUSTIN | Jul 21, 2025 | Feb 15, 2027 | $1 |
| Closed | 2025-012321 BP | Building Permit | 8908 TURKS CAP CT, AUSTIN | Feb 5, 2025 | Jan 9, 2026 | $1 |