Blackline Construction
Report verdict
Licensed & active (expires 2028-09-30) · No board discipline flag found in covered sources · 136 permits on file
88/100 HomeProFax Score — public-record factors only, not a rating of workmanship. How the score works Full report
The state board is the authority. A flag is a prompt to read the board record, not a verdict. Verify license status with the issuing board before you hire. See methodology and disclaimer & corrections.
What this report checks
Score breakdown
| Factor | Points | Why |
|---|---|---|
| License status | 35/35 | Active license on file with a state board |
| Discipline & legal flags | 20/20 | No disciplinary flag on board record |
| Permit history | 20/20 | 136 permits on file |
| Reviews (BBB + HomeProFax) | 13/25 | No BBB rating on file and no approved HomeProFax reviews yet (neutral). External ratings are linked below, not stored |
A simple, transparent sum of public-record factors. How the score works. Not a rating of workmanship.
Source data as of: Report rebuilt from source files on 2026-10-19 · CSLB bond/workers' comp as of 2026-10-14 · most recent permit on file: 2026-08-14.
What we checked
| License | Checked | CA Corporation #783873 · active |
| Bond | Checked | $25,000 with WESTERN SURETY COMPANY · as of 2026-10-14 |
| Workers' comp | Checked | Workers' Compensation Insurance (STATE COMPENSATION INSURANCE FUND) · as of 2026-10-14 |
| Years licensed | Checked | Licensed since 2000 |
| Business registration | Not available in CA | State business registry not loaded yet |
| Permits | Checked | 136 permits on record |
| Discipline | Checked | none on record |
| OSHA | Not checked yet | OSHA records not checked yet |
| Reviews & outside links | Not checked yet | No review lookup run yet |
| Contractor-provided | Not checked yet | Nothing provided by the contractor yet |
Public records as of their source dates. Board status is shown as reported by the board. Not a guarantee. Ask the contractor for their verified HomeProFax report.
Licenses
Licensed since 2000 (earliest original issue date on these state license records; not a business start date)
| License # | Type | Status | Issued | Expires | Source |
|---|---|---|---|---|---|
| CA 783873 | Corporation (B) Workers' comp: Workers' Compensation Insurance (STATE COMPENSATION INSURANCE FUND); Contractor bond: $25000 (WESTERN SURETY COMPANY) | clear | 2000-09-01 | 2028-09-30 | State board |
Bond & workers' comp
| Contractor bond | $25,000 · WESTERN SURETY COMPANY · effective 2023-01-01 |
|---|---|
| Workers' comp | Workers' Compensation Insurance · STATE COMPENSATION INSURANCE FUND · effective 2024-05-06 · expires 2027-05-06 |
Source: CSLB Public Data Portal (License Master), as of 2026-10-14. Verify current bond and insurance with CSLB and the insurer before you hire.
Building permits
| Date | Permit | Type | Address | Value |
|---|---|---|---|---|
| 2026-08-14 | 202608146637 | otc alterations permit | 68 Whitney St | $21,000 |
| 2026-06-09 | 202606012280 | otc alterations permit | 49 Elsie St | $1 |
| 2026-05-15 | 202605111050 | otc alterations permit | 1031 Valencia St | $4,500 |
| 2026-04-07 | 202604079064 | otc alterations permit | 40 Sycamore St | $1 |
| 2026-03-20 | 202512313122 | otc alterations permit | 1031 Valencia St | $50,000 |
| 2026-02-23 | 202510248089 | otc alterations permit | 1031 Valencia St | $100,000 |
| 2025-11-21 | 202508294275 | otc alterations permit | 49 Elsie St | $20,000 |
| 2025-10-15 | 202510147348 | otc alterations permit | 1679 35th Av | $1 |
| 2025-09-11 | 202506058022 | otc alterations permit | 1031 Valencia St | $420,000 |
| 2025-08-28 | 202411155136 | additions alterations or repairs | 461 Anderson St | $180,000 |
| 2025-08-01 | 202407106115 | additions alterations or repairs | 40 Sycamore St | $209,352 |
| 2025-07-18 | 202507080338 | otc alterations permit | 43 Whitney St | $200,000 |
| 2025-06-24 | 202502069776 | otc alterations permit | 67 Turk St | $150,000 |
| 2025-04-23 | 202410213336 | otc alterations permit | 49 Elsie St | $20,000 |
| 2025-04-14 | 202504144354 | otc alterations permit | 357 Chenery St | $1 |
| 2025-04-14 | 202504144370 | otc alterations permit | 359 Chenery St | $1 |
| 2025-04-14 | 202504144360 | otc alterations permit | 359 Chenery St | $1 |
| 2025-01-08 | 202501087962 | otc alterations permit | 2167 28th Av | $20,000 |
| 2024-12-20 | 202407025689 | additions alterations or repairs | 42 Sycamore St | $10,000 |
| 2024-12-20 | 202406285528 | additions alterations or repairs | 40 Sycamore St | $8,000 |
| 2024-10-24 | 202410243684 | otc alterations permit | 49 Elsie St | $2,000 |
| 2024-10-09 | 202410092663 | — | — | — |
| 2024-10-09 | 202410092668 | otc alterations permit | 375 14th St | $30,000 |
| 2024-08-08 | 202312072116 | additions alterations or repairs | 4042 Fulton St | $110,000 |
| 2024-06-27 | 202406265301 | otc alterations permit | 186 Collins St | $28,000 |
| 2024-06-26 | 202406134440 | otc alterations permit | 199 Chestnut St | $200,000 |
| 2024-06-20 | 202406204901 | otc alterations permit | 188 Collins St | $20,000 |
| 2024-06-17 | 202406174609 | otc alterations permit | 72 Sanchez St | $20,000 |
| 2024-05-20 | 202401224350 | otc alterations permit | 528 Natoma St | $3,500 |
| 2024-05-20 | 202405202504 | otc alterations permit | 42 Sycamore St | $20,000 |
| 2024-05-20 | 202312152609 | otc alterations permit | 566 Natoma St | $1 |
| 2024-04-17 | 202404170178 | otc alterations permit | 1679 35th Av | $2,000 |
| 2023-11-07 | 202311070326 | otc alterations permit | 300 Ocean Av | $1 |
| 2023-10-30 | 202310279721 | otc alterations permit | 33 Gennessee St | $27,000 |
| 2023-10-27 | 202305047072 | otc alterations permit | 300 Ocean Av | $15,000 |
| 2023-09-26 | 202308013491 | otc alterations permit | 530 Natoma St | $50,000 |
| 2023-09-26 | 202309267460 | otc alterations permit | 4621 18th St | $1 |
| 2023-09-06 | 202308315753 | otc alterations permit | 49 Elsie St | $20,000 |
| 2023-08-31 | 202308315750 | otc alterations permit | 2875 Green St | $25,000 |
| 2023-08-08 | 202308084009 | otc alterations permit | 528 Natoma St | $12,000 |
| 2023-07-18 | 202307172360 | otc alterations permit | 2676 Folsom St | $1 |
| 2023-07-14 | 202307061599 | otc alterations permit | 530 Natoma St | $60,000 |
| 2023-07-06 | 202302172171 | otc alterations permit | 530 Natoma St | $120,000 |
| 2023-06-27 | 202306270990 | otc alterations permit | 344 Precita Av | $20,000 |
| 2023-06-16 | 202306160321 | otc alterations permit | 4621 18th St | $5,000 |
| 2023-05-16 | 202305127674 | otc alterations permit | 208 Joost Av | $28,000 |
| 2023-04-10 | 202304105374 | otc alterations permit | 300 Ocean Av | $20,000 |
| 2023-03-07 | 202303073136 | otc alterations permit | 75 Capra Wy | $5,000 |
| 2023-02-17 | 202205053656 | demolitions | 642 Guerrero St | $1 |
| 2023-02-02 | 202301099856 | otc alterations permit | 300 Ocean Av | $12,000 |
| 2023-01-04 | 202301039634 | otc alterations permit | 300 Ocean Av | $60,000 |
| 2022-11-28 | 202211096176 | otc alterations permit | 3154 Mission St | $48,161 |
| 2022-10-13 | 202210134305 | otc alterations permit | 375 14th St | $1 |
| 2022-08-11 | 202208019657 | otc alterations permit | 2678 Folsom St | $10,000 |
| 2022-07-22 | 202012019960 | additions alterations or repairs | 2676 Folsom St | $500,000 |
| 2022-06-30 | 202010217055 | additions alterations or repairs | 239 Clayton St | $300,000 |
| 2022-04-20 | 202204152349 | otc alterations permit | 375 14th St | $60,000 |
| 2022-03-10 | 202103247234 | additions alterations or repairs | 3158 Mission St | $300 |
| 2022-02-08 | 202202087578 | otc alterations permit | 60 Retiro Wy | $67,200 |
| 2022-01-20 | 202201206289 | otc alterations permit | 644 Guerrero St | $29,500 |
| 2021-12-09 | 202112094089 | otc alterations permit | 305 San Carlos St | $72,000 |
| 2021-11-15 | 202111152401 | otc alterations permit | 2217 Mission St | $22,000 |
| 2021-10-12 | 202110069910 | otc alterations permit | 2217 Mission St | $59,700 |
| 2021-08-25 | 202108116235 | otc alterations permit | 2676 Folsom St | $5,000 |
| 2021-07-15 | 202107154488 | otc alterations permit | 1041 Alabama St | $70,000 |
| 2021-06-04 | 202106041691 | otc alterations permit | 168 Sickles Av | $100,000 |
| 2021-05-04 | 202103045827 | otc alterations permit | 736 Valencia St | $10,000 |
| 2021-03-23 | 202103237089 | otc alterations permit | 2682 Folsom St | $25,000 |
| 2021-03-23 | 202103237094 | otc alterations permit | 2682 Folsom St | $25,000 |
| 2021-03-23 | 202103237093 | otc alterations permit | 2682 Folsom St | $25,000 |
| 2021-03-23 | 202103237090 | otc alterations permit | 2682 Folsom St | $25,000 |
| 2021-03-22 | 202103227005 | otc alterations permit | 2676 Folsom St | $25,000 |
| 2021-03-22 | 202103227004 | otc alterations permit | 2676 Folsom St | $25,000 |
| 2021-03-22 | 202103227003 | otc alterations permit | 2676 Folsom St | $25,000 |
| 2021-03-10 | 202010237292 | additions alterations or repairs | 2676 Folsom St | $50,000 |
| 2021-01-06 | 202101062158 | otc alterations permit | 239 Clayton St | $79,700 |
| 2020-11-25 | 202011259720 | otc alterations permit | 2676 Folsom St | $2,000 |
| 2020-11-02 | 202009124056 | otc alterations permit | 3264 23rd St | $8,000 |
| 2020-10-15 | 202010156551 | otc alterations permit | 2676 Folsom St | $20,000 |
| 2020-06-26 | 202006138719 | otc alterations permit | 3262 23rd St | $200,000 |
| 2020-05-26 | 201912169645 | otc alterations permit | 969 Folsom St | $60,000 |
| 2020-02-18 | 202002184738 | otc alterations permit | 307 Athens St | $20,000 |
| 2019-09-03 | 201908057876 | otc alterations permit | 4621 18th St | $50,000 |
| 2019-08-23 | 201908169061 | otc alterations permit | 969 Folsom St | $1 |
| 2019-07-25 | 201903286495 | otc alterations permit | 969 Folsom St | $350,000 |
| 2019-05-01 | 201905019436 | otc alterations permit | 2102 Union St | $3,000 |
| 2019-03-21 | 201901251304 | otc alterations permit | 74 New Montgomery St | $25,000 |
| 2019-02-27 | 201902273941 | otc alterations permit | 300 Berry St | $25,000 |
| 2018-11-29 | 201811276754 | otc alterations permit | 405 Howard St | $40,000 |
| 2018-07-11 | 201807114349 | otc alterations permit | 2420 Lake St | $33,000 |
| 2018-05-04 | 201805048257 | otc alterations permit | 600 Buchanan St | $12,500 |
| 2018-01-04 | 201801047845 | otc alterations permit | 660 Natoma St | $12,000 |
| 2018-01-04 | 201801047857 | otc alterations permit | 865 Vallejo St | $125,000 |
| 2017-08-09 | 201707212641 | otc alterations permit | 207 Berry St | $35,000 |
| 2017-07-28 | 201707283217 | otc alterations permit | 31 Milton St | $55,000 |
| 2017-07-12 | 201706280578 | otc alterations permit | 244 Townsend St | $35,000 |
| 2017-01-06 | 201612084507 | otc alterations permit | 2295 Filbert St | $42,000 |
| 2016-11-30 | 201609228485 | otc alterations permit | 2295 Filbert St | $20,000 |
| 2016-08-01 | 201608013843 | otc alterations permit | 544 Clayton St | $4,500 |
| 2016-05-03 | 201604296152 | otc alterations permit | 1390 Hayes St | $35,000 |
Showing the 100 most recent of 136 permits on file. Source: DataSF (Building Permits + Building Permits Contacts)
Source: DataSF, City and County of San Francisco (Building Permits; Building Permits Contacts).
Discipline, complaints & legal
No board discipline or complaints found in our current sources. Federal court search (CourtListener): no state-consistent possible match in our last sample run, or not yet run for this contractor.
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Blackline Construction · General Building Contractor
San Francisco, CA
License on file: CA ••••3873
Sources for this report
- CA license board
- DataSF (Building Permits + Building Permits Contacts)
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