Kolby Development Company
Report verdict
Licensed & active (expires 2028-05-31) · No board discipline flag found in covered sources · 24 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 | 24 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: 2024-06-06.
What we checked
| License | Checked | CA Sole Owner #530673 · active |
| Bond | Checked | $25,000 with WESTERN SURETY COMPANY · as of 2026-10-14 |
| Workers' comp | Checked | Exempt · as of 2026-10-14 |
| Years licensed | Checked | Licensed since 1988 |
| Business registration | Not available in CA | State business registry not loaded yet |
| Permits | Checked | 24 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 1988 (earliest original issue date on these state license records; not a business start date)
| License # | Type | Status | Issued | Expires | Source |
|---|---|---|---|---|---|
| CA 530673 | Sole Owner (B) Workers' comp: Exempt; Contractor bond: $25000 (WESTERN SURETY COMPANY) | clear | 1988-05-20 | 2028-05-31 | State board |
Bond & workers' comp
| Contractor bond | $25,000 · WESTERN SURETY COMPANY · effective 2024-11-29 |
|---|---|
| Workers' comp | Exempt (no employees reported to CSLB) · effective 2026-06-08 |
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 |
|---|---|---|---|---|
| 2024-06-06 | 202406043716 | otc alterations permit | 75 Justin Dr | $25,000 |
| 2022-11-21 | 202209283348 | otc alterations permit | 381 Mangels Av | $35,000 |
| 2021-12-06 | 202112033656 | otc alterations permit | 2199 Divisadero St | $55,000 |
| 2021-09-02 | 202109027702 | otc alterations permit | 2199 Divisadero St | $9,000 |
| 2021-06-25 | 202106222971 | otc alterations permit | 2199 Divisadero St | $45,000 |
| 2021-06-14 | 202106142383 | otc alterations permit | 2199 Divisadero St | $97,000 |
| 2021-06-01 | 202103035763 | otc alterations permit | 3631 Santiago St | $65,000 |
| 2020-02-07 | 201912190082 | otc alterations permit | 400 Goettingen St | $1 |
| 2019-12-19 | 201804025255 | additions alterations or repairs | 400 Goettingen St | $170,000 |
| 2019-09-30 | 201909303077 | otc alterations permit | 2 Pearl St | $3,800 |
| 2019-09-04 | 201909040592 | otc alterations permit | 2 Pearl St | $12,500 |
| 2018-10-09 | 201810092567 | otc alterations permit | 73 Sumner St | $19,000 |
| 2017-09-05 | 201707283198 | otc alterations permit | 73 Sumner St | $19,000 |
| 2017-07-20 | 201707202461 | otc alterations permit | 83 Scotia Av | $4,800 |
| 2016-11-07 | 201611072158 | otc alterations permit | 445 Francisco St | $9,500 |
| 2016-03-09 | 201603091598 | otc alterations permit | 445 Francisco St | $4,200 |
| 2015-03-06 | 201503060165 | otc alterations permit | 631 O'farrell St | $15,000 |
| 2014-05-21 | 201405206272 | otc alterations permit | 60 Rausch St | $25,000 |
| 2014-02-18 | 201402148573 | otc alterations permit | 838 Diamond St | $32,000 |
| 2013-05-24 | 201305247851 | otc alterations permit | 85 Western Shore Ln | $60,000 |
| 2011-03-22 | 201103222554 | otc alterations permit | 72 Elsie St | $70,000 |
| 2010-03-01 | 201003017294 | otc alterations permit | 3435 24th St | $1,000 |
| 2010-02-17 | 201002176639 | otc alterations permit | 3435 24th St | $500 |
| 2009-02-02 | 200902021230 | otc alterations permit | 67 Diamond St | $2,000 |
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.
Around the web
Search other sites — these open a search for this name and location. They are not verified matches; check the business name, address and license number on the result.
Search Google Maps ↗ Search Angi ↗ Search Yelp ↗ Search BBB ↗ Search HomeAdvisor ↗
Outside ratings are shown for context only and are not part of the HomeProFax Score. Why?
Reviews
External review checks (we link out; we do not store or score Google, Angi, Yelp or Houzz ratings):
Check Google reviews ↗ Search BBB ↗
Homeowner reviews on HomeProFax
No published homeowner reviews yet.
Leave a review
Is this your business?
Claim this profile for free to correct details, add insurance and photos, and get a verified badge.
Kolby Development Company · General Building Contractor
San Francisco, CA
License on file: CA ••••0673
Sources for this report
- CA license board
- DataSF (Building Permits + Building Permits Contacts)
See something wrong? Request a correction. This report is compiled from public records and is not a consumer report.
More General Contractors in San Francisco, CA
Compare 604 general contractors in San Francisco by license status, permits and score.
See general contractors in San Francisco → All contractors in San Francisco