Liyuan (Leon) Liu
- Listed as
- designer
- Firm
- Rf Fire Alarm Pro Inc
- Based in
- San Francisco
- On San Francisco permits
- Feb 2025 to Feb 2026
16 permits since 2000 (designer on 16 permits): 15 completed, 1 in progress.
This is the city’s permit record, not a license check: the role and the number come from what was written on each permit (the number spelled one way). It does not show whether the license is current. How to read these records
Most recent permits
| Filed | Outcome | Address | Contractor | Work described on the permit | Declared cost |
|---|---|---|---|---|---|
| Feb 3, 2026 | In progress issued Feb 2026 | 1680 Clay St | Rf Fire Alarm Pro Inc | replacing e fire alarm system to comply with sffc 1103.6.7.1Details
replacing e fire alarm system to comply with sffc 1103.6.7.1 | $5,000 |
| Feb 3, 2026 | Completed final sign-off Sep 2026 | 267 Green St | Rf Fire Alarm Pro Inc | replace (e) fire alarm system to comply with sffc 1103.7.6.1Details
replace (e) fire alarm system to comply with sffc 1103.7.6.1 | $5,000 |
| Nov 18, 2025 | Completed final sign-off Dec 2025 | 3101 Clement St | Rf Fire Alarm Pro Inc | install additional devices to (e) fire alarm system completed under permit 202402065317. additions are (1) smoke detector, (2) ceiling mount speaker strobes, and (1) wall mount strobe. ref t.i permit 202308255335.Details
install additional devices to (e) fire alarm system completed under permit 202402065317. additions are (1) smoke detector, (2) ceiling mount speaker strobes, and (1) wall mount strobe. ref t.i permit 202308255335. | $10,000 |
| Oct 27, 2025 | Completed final sign-off Jan 2026 | 861 Post St | Rf Fire Alarm Pro Inc | upgrade existing fire alarm system to comply with sffc 1103.7.6.1.Details
upgrade existing fire alarm system to comply with sffc 1103.7.6.1. | $10,000 |
| Oct 9, 2025 | Completed final sign-off Nov 2025 | 108 Albion St | Rf Fire Alarm Pro Inc | install new sprinkler monitoring system, ref to adu pa# 202012070397 & sprinkler 202503313352Details
install new sprinkler monitoring system, ref to adu pa# 202012070397 & sprinkler 202503313352 | $5,000 |
| Oct 9, 2025 | Completed final sign-off Oct 2025 | 434 Shotwell St | Rf Fire Alarm Pro Inc | install new sprinkler monitoring system, ref to t.i. pa# 202206307486 & sprinkler 202308234992Details
install new sprinkler monitoring system, ref to t.i. pa# 202206307486 & sprinkler 202308234992 | $5,000 |
| Sep 15, 2025 | Completed final sign-off Nov 2025 | 801 28th Av | Rf Fire Alarm Pro Inc | ugrade (e) fire alarm system to comply with sffd 1103.7.6.1Details
ugrade (e) fire alarm system to comply with sffd 1103.7.6.1 | $10,000 |
| Sep 15, 2025 | Completed final sign-off Mar 2026 | 676 Geary St | Rf Fire Alarm Pro Inc | upgrade (e) fire alarm system to comply with sffc 1103.7.6.1Details
upgrade (e) fire alarm system to comply with sffc 1103.7.6.1 | $30,000 |
| Aug 21, 2025 | Completed final sign-off Nov 2025 | 1547 Clay St | Rf Fire Alarm Pro Inc | replace (e) fire alarm system with (n) fire alarm system to comply with sffd 1103.7.6.1Details
replace (e) fire alarm system with (n) fire alarm system to comply with sffd 1103.7.6.1 | $10,000 |
| Aug 15, 2025 | Completed final sign-off Nov 2025 | 589 04th Av | Rf Fire Alarm Pro Inc | installation of (n) fire alarm monitoring system.Details
installation of (n) fire alarm monitoring system. | $6,000 |
| Jun 2, 2025 | Completed final sign-off Jan 2026 | 423 33rd Av | Rf Fire Alarm Pro Inc | install new sprinkler monitoring system, ref to 201406107968Details
install new sprinkler monitoring system, ref to 201406107968 | $5,000 |
| May 28, 2025 | Completed final sign-off Aug 2025 | 673 04th Av | Rf Fire Alarm Pro Inc | installation of new sprinkler monitoring systemDetails
installation of new sprinkler monitoring system | $50,004 |
| May 8, 2025 | Completed final sign-off Mar 2026 | 2870 16th St | Rf Fire Alarm Pro Inc | upgrade (e) fire alarm system to comply with sffd 1103.6.7.1Details
upgrade (e) fire alarm system to comply with sffd 1103.6.7.1 | $10,000 |
| Mar 10, 2025 | Completed final sign-off Apr 2025 | 1236 07th Av | Rf Fire Alarm Pro Inc | installation of (n) fire sprinkler monitoring systemDetails
installation of (n) fire sprinkler monitoring system | $2,000 |
| Mar 6, 2025 | Completed final sign-off Mar 2025 | 1416 07th Av | Rf Fire Alarm Pro Inc | installation of new sprinkler monitoring systemDetails
installation of new sprinkler monitoring system | $2,000 |
| Feb 18, 2025 | Completed final sign-off Apr 2025 | 2102 Bush St | Rf Fire Alarm Pro Inc | replace fire alarm to comply with sffc 1103.7.6.1Details
replace fire alarm to comply with sffc 1103.7.6.1 | $10,000 |