Yk Mason & Sons Inc

Contractor license: 1001324; State license record
Based in: San Francisco
On San Francisco permits: Jun 2016 to Jul 2026
Last 24 months: 8 permits filed

26 permits since 2000: 21 completed, 4 in progress, 1 expired or cancelled.

CompletedIn progressNever finaledExpired or cancelled

This is the city’s permit record, not a license check. It does not show whether the state license is active, bonded or insured. How to read these records

Permits filed each year

How long permits take

Median days to final inspection, citywideMedian days to permit issued, citywide

Each point is the quarter the permits were filed, for roof deck across San Francisco. A median counts only permits that have finished, so the shaded recent quarters look faster than they will end up: their slow permits have not finished yet. Hover a point for the slowest 10%. Gaps mean fewer than 5 permits. A rise in the issue line is the city’s review backlog, not the contractor. Too few of this contractor’s permits have finished to plot them.

Roof deck permits

All Roof deck 1 Stairs 2 Kitchen remodel 10 Bathroom remodel 10

1 roof deck permit: 1 in progress. Typically 762 days from filing to permit.

Filed	Outcome	Address	Work described on the permit	Declared cost
Jan 12, 2024	In progress issued Feb 2026	2154 Taylor St	new roof deck for unit 6 only Details Permit 202401123932 Status issued Filed Jan 12, 2024 Permit issued Feb 12, 2026 Declared cost $30,000 Address 2154 Taylor St new roof deck for unit 6 only Open the permit page	$30,000