Yk Mason & Sons INC
Yk Mason & Sons INC is a California corporation based in San Francisco (San Francisco County) with contractor license #1001324 (B, D-39), first issued in 2015. CSLB status on Nov 9, 2026: Active, no violations. From Jan 1, 2025 to Nov 8, 2026, building departments recorded 8 permits under this name, 8 of them home projects (kitchen & bath, room addition). 62% of them were finaled by the city inspector. The median declared job value is $28,096. Most of the work was in 94118 · Inner Richmond / Presidio Heights. The latest permit is from Jul 23, 2026. The license lists a contractor bond and workers' compensation coverage.
Business phone (CSLB)
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License
| License # | 1001324 |
|---|---|
| Status | Active, no violations |
| Classes | B, D-39 |
| Business type | corporation |
| Issued / Expires | Feb 17, 2015 / May 31, 2027 |
| Contractor bond | Yes |
| Workers' comp | Yes, on file |
| Based in | San Francisco, San Francisco County |
Recent permits
| Date | Work | Area | Declared value | Status |
|---|---|---|---|---|
| Jul 23, 2026 | Kitchen & bath remodel | 94122 · Sunset/Parkside / Inner Sunset | $125,000 | Issued |
| Jul 13, 2026 | Kitchen & bath remodel | 94127 · West of Twin Peaks | $28,000 | Issued |
| May 13, 2026 | Kitchen & bath remodel | 94118 · Inner Richmond / Presidio Heights | $7,000 | Finaled |
| Mar 26, 2026 | Room addition | 94112 · Excelsior / Outer Mission | $34,495 | Issued |
| Nov 18, 2025 | Kitchen & bath remodel | 94118 · Inner Richmond / Presidio Heights | $6,000 | Finaled |
| Nov 18, 2025 | Kitchen & bath remodel | 94118 · Inner Richmond / Presidio Heights | $6,000 | Finaled |
| Jun 30, 2025 | Kitchen & bath remodel | 94122 · Sunset/Parkside / Inner Sunset | $28,192 | Finaled |
| Mar 5, 2025 | Kitchen & bath remodel | 94118 · Inner Richmond / Presidio Heights | $35,000 | Finaled |
Street addresses of homeowners are never shown.
Work on permits
Where they work
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