# Locks & Whiskers — hair salon in Castro / Upper Market, San Francisco

**Last verified Oct 22, 2026, 9:40 AM PT (2026-10-22T16:40:40Z)** — newest successful check of any source; every fetch is in the crawl log below.

> Locks & Whiskers is a hair salon at 3901 18th Street, San Francisco, CA 94114 (Castro / Upper Market). Listed from the SF business registry, OpenStreetMap, the business’s own website; not profiled in depth.

- Canonical: https://agentsalonsf.com/salons/locks-and-whiskers-castro-upper-market (HTML) · https://agentsalonsf.com/salons/locks-and-whiskers-castro-upper-market.md (this file) · https://agentsalonsf.com/api/v1/salons/locks-and-whiskers-castro-upper-market (JSON) · ref `san-francisco/hair-salon/locks-and-whiskers-castro-upper-market`
- Depth: LISTED — Listed: imported from OpenStreetMap, the SF business registry and the business’s own website; not profiled in depth. · Last verified: 2026-10-22 · Independent; not affiliated with any salon listed; booking happens on the salon's own system.

**Locks & Whiskers · Castro / Upper Market · 3901 18th Street, San Francisco, CA 94114**

- **Depth:** LISTED — Listed: imported from OpenStreetMap, the SF business registry and the business’s own website; not profiled in depth.
- **Book:** [Call (415) 200-7284](tel:+14152007284) (no online booking published) [REPORTED 2026-10-22]
- **Phone:** [(415) 200-7284](tel:+14152007284) [REPORTED 2026-10-22]
- **Website:** [locksandwhiskers.com](https://agentsalonsf.com/out?m=san-francisco/hair-salon/locks-and-whiskers-castro-upper-market&to=https%3A%2F%2Fwww.locksandwhiskers.com%2F) (opened by our link checker) [VERIFIED 2026-10-22]
- **License:** UNKNOWN — no matching CA establishment license found in state data. Matching can miss; this does not mean unlicensed. Check [search.dca.ca.gov](https://search.dca.ca.gov/). [UNKNOWN 2026-10-01]
- **Registry:** Registered business location (active) with the San Francisco Treasurer & Tax Collector (DataSF Registered Business Locations, data as of Oct 22, 2026); location start date Sep 29, 2025 — [record](https://data.sf.gov/d/g8m3-pdis) [VERIFIED 2026-10-22]
- **Published prices:** UNKNOWN — no prices published that we could find [UNKNOWN 2026-10-22]
- **Hours:** Mon–Sat 9 AM–7 PM (source: locksandwhiskers.com; opening hours, not appointment slots) [VERIFIED 2026-10-22]
- **Appointment availability:** UNKNOWN — we see published opening hours only, never open appointment slots; check the booking page [UNKNOWN 2026-10-22]
- **Open today?:** UNKNOWN — Registered as of 2026-10-22; we have not confirmed the business is open today. [UNKNOWN 2026-10-22]

_Each fact carries its status and the date we checked it; no online booking is published, call to check availability. How we verified each fact is listed below._

## Crawl log
Every source we fetched or checked for this salon, newest first. Last verified: Oct 22, 2026, 9:40 AM PT.

| Source | What it is | Checked | Result | Facts from it |
|---|---|---|---|---|
| data.sf.gov (datasf:1400704-09-251-1174935) | DataSF registry record | Oct 22, 2026, 9:40 AM PT (data as of Oct 22, 2026) | read | registered business location #1400704-09-251-1174935 (active) |
| [locksandwhiskers.com](https://agentsalonsf.com/out?m=san-francisco/hair-salon/locks-and-whiskers-castro-upper-market&to=https%3A%2F%2Fwww.locksandwhiskers.com%2F) | Salon website | Oct 22, 2026, 6:40 AM PT | HTTP 200 | website (link check); opening hours |
| openstreetmap.org/node/4498827891 (node/4498827891) | OpenStreetMap | Oct 22, 2026, 6:38 AM PT | read | name; address; subtypes; phone; website |
| search.dca.ca.gov | CA Board of Barbering & Cosmetology licence data | not recorded (data as of Oct 1, 2026) | no matching establishment licence (matching can miss) | licence lookup |

### What an agent can rely on (listed salon)
- Identity, address and licence or registry status as of the state or city data date shown.
- Prices exactly as the business publishes them (often starting prices), with the page and date.
- Published opening hours and the booking link location, each with source and date.

### What an agent cannot rely on
- Appointment availability: we only have published opening hours, never open slots.
- What a service includes, unless the service name says so (most are not comparable apples-to-apples).
- Stylists, cancellation or deposit policies, accessibility: not researched (UNKNOWN).
- That the business is open today: operating status is UNKNOWN unless stated.

## Offerings
No service menu or prices published that we could find (UNKNOWN).

## How we verified this
- Business is registered and active with the San Francisco Treasurer & Tax Collector (Registered Business Locations, DataSF, data as of Oct 22, 2026); location start date Sep 29, 2025 — [record](https://data.sf.gov/d/g8m3-pdis).
- Address and map location from OpenStreetMap (Oct 22, 2026, 6:38 AM PT).
- Phone number from OpenStreetMap (Oct 22, 2026, 6:38 AM PT).
- Website reachable on Oct 22, 2026, 6:40 AM PT (HTTP 200).
- Opening hours from locksandwhiskers.com (Oct 22, 2026, 6:40 AM PT).

### What we have not verified
- We have not checked live appointment availability.
- No matching CA establishment license found (matching can miss; this does not mean unlicensed).
- We have not called the business.
- No prices are published.

## Facts
- Address: 3901 18th Street, San Francisco, CA 94114 (Castro / Upper Market) [REPORTED 2026-10-22]
- Phone: +14152007284 [REPORTED 2026-10-22]
- Website: https://www.locksandwhiskers.com/ [REPORTED 2026-10-22]
- Status: unknown [UNKNOWN 2026-10-22] — Registered as of 2026-10-22; we have not confirmed the business is open today.

## Hours [VERIFIED 2026-10-22]
- Monday: 09:00–19:00
- Tuesday: 09:00–19:00
- Wednesday: 09:00–19:00
- Thursday: 09:00–19:00
- Friday: 09:00–19:00
- Saturday: 09:00–19:00
- Sunday: Closed per source
- Hours source: locksandwhiskers.com (locksandwhiskers.com); checked Oct 22, 2026, 6:40 AM PT. Opening hours do not establish appointment availability.

## Policies and attributes
- Cancellation, deposit, walk-ins, accessibility and languages: UNKNOWN (not researched for this listing).

## Booking
- [Call (415) 200-7284](tel:+14152007284)
- No online booking published. Call +14152007284.
- Appointment availability: UNKNOWN — published opening hours only — the salon is open then, which does not mean an appointment is free (availability_basis: published_hours). Check times on the booking page.

## Sources
- openstreetmap node/4498827891: https://www.openstreetmap.org/node/4498827891, fetched 2026-10-22T13:38:59Z
- business registry datasf:1400704-09-251-1174935: https://data.sf.gov/resource/g8m3-pdis.json?uniqueid=1400704-09-251-1174935, fetched 2026-10-22T16:40:40Z
- salon website: https://www.locksandwhiskers.com/, fetched 2026-10-22T13:40:07Z

## Related
- All salons in Castro / Upper Market: https://agentsalonsf.com/in/castro-upper-market
- All San Francisco salons: https://agentsalonsf.com/salons · A–Z: https://agentsalonsf.com/a-z

## Data quality legend
- VERIFIED: supported by a named source and a check date.
- REPORTED: stated by a source, not independently confirmed.
- INFERRED: our interpretation, with reasons.
- UNKNOWN: we looked and could not establish it.
- STALE: previously observed, too old to rely on.

Generated 2026-10-24T07:13Z from data verified 2026-10-22. Machine access: https://agentsalonsf.com/api/v1 (REST, OpenAPI at https://agentsalonsf.com/api/v1/openapi.json) and https://agentsalonsf.com/mcp (MCP, streamable HTTP). Listing data: © OpenStreetMap contributors (ODbL-1.0, https://www.openstreetmap.org/copyright); DataSF Registered Business Locations (ODC-PDDL); California DCA licensee data. Dataset b-merchants@2026-10-23T11:05:07Z#4f15ef234749.