Mooney & Boland · CA
Private Detective in Fairfax, California
Lawful, discreet investigations in Fairfax, California, arranged through Mooney & Boland's network of licensed independent private detectives.
About Fairfax
Private detective services in Fairfax.
Fairfax sits in Marin County, about 30 miles northeast of San Francisco. It is an incorporated town with about 7,516 residents (ACS 2020-2024) on 2.2 square miles of land. It is part of the San Francisco-Oakland-Fremont, CA metropolitan statistical area.
Fairfax is closely connected to the rest of the metro area, which means people, vehicles and records tied to an investigation here are often spread across several jurisdictions. Professional, scientific and management services is the leading employment sector for residents, at about 27% of workers.
When you contact Mooney & Boland about a matter in Fairfax, we listen first, explain what can lawfully be done in California, and set out scope and cost before any work begins.
Fairfax at a glance
- Population
- 7,516 (ACS 2020-2024)
- Type of place
- An incorporated town
- County
- Marin County
- Land area
- 2.2 sq mi · 3,373 people per sq mi
- Statistical area
- San Francisco-Oakland-Fremont, CA
- Major routes
- U.S. Route 101
- Median age
- 48.7
- Median household income
- $141,700
- Owner-occupied homes
- 69%
- Average commute
- 29 minutes
Sources: U.S. Census Bureau ACS 5-year estimates (2020-2024), 2025 Gazetteer, OMB/Census CBSA delineations (2023), TIGER/Line roads. View the Census profile.
Local considerations
Investigative considerations in Fairfax.
Quiet streets and visible routines
Fairfax is largely residential, at about 3,373 residents per square mile. On streets where a parked car stands out, observation is planned around known schedules and public vantage points, in shorter sessions rather than long watches.
Investigations in Fairfax
What can be arranged in Fairfax.
A selection based on Fairfax's setting. All 75 services are available; browse every service.
Asset Searches
Matters involving significant assets, from divorce to judgment collection.
Infidelity Investigations
Discreet, lawful documentation for relationship concerns.
Background Investigations
Verifying who someone is before you trust them.
Child Custody Investigations
Objective documentation focused on a child's wellbeing.
People Searches
Finding relatives, witnesses and lost contacts.
Litigation Support Investigations
Fact-finding that supports attorneys and their clients.
Surrounding area
Communities around Fairfax.
The nearest large population center is San Francisco, about 30 miles away, with 830,235 residents.
Main routes: U.S. Route 101.
Investigations are not limited by municipal lines. A matter that begins in Fairfax can continue into neighboring communities as part of the same engagement.
- San Anselmo1 mi east · 12,679 residents
- Sleepy Hollow2 mi north · 3,063 residents
- Ross2 mi southeast · 2,606 residents
- Lucas Valley-Marinwood4 mi north · 6,473 residents
- Kentfield4 mi southeast · 6,900 residents
- San Rafael5 mi east · 60,433 residents
Hiring in California
Hiring a private detective in California.
California requires a private detective license from the Bureau of Security and Investigative Services, part of the Department of Consumer Affairs, under the Business and Professions Code §§ 7512–7573.
To verify a license, use the regulator's lookup: Bureau of Security and Investigative Services (BSIS).
California generally requires the consent of all parties to record a confidential conversation. Deeds and property records for Fairfax are recorded with the county recorder or register of deeds.
Questions
Private detective questions in Fairfax.
How inquiries are coordinated
Private detectives in our network can assist with qualifying inquiries in Fairfax. Each investigation is conducted by an independent private detective who holds the licensing required for the jurisdiction where the work takes place, where licensing is required.
How do I hire a private detective in Fairfax?
Start with a confidential call to 629-310-8667 or an email describing what you need to know and why. We'll discuss what's possible and lawful in California, agree on scope and cost in writing, and coordinate the work with an independent private detective licensed for the jurisdiction where it takes place.
Do private detectives need a license in California?
California requires a private detective license from the Bureau of Security and Investigative Services, part of the Department of Consumer Affairs, under the Business and Professions Code §§ 7512–7573. The regulator is the Bureau of Security and Investigative Services (BSIS).
What should I know before hiring a private detective in Marin County?
Most records that matter in Marin County are kept at the county level: court files with the clerk, and deeds with the county recorder or register of deeds. A good detective searches those originals rather than relying on online summaries, and confirms identity so records aren't attributed to the wrong person.
The person I'm concerned about works outside Fairfax. Can surveillance follow them?
Yes, within the law. Mobile surveillance can follow a routine into San Francisco and back, from public places. Plans account for travel time, and work in another state is handled by a detective licensed there.
Can an investigation in Fairfax extend to San Anselmo or Sleepy Hollow?
Yes. People rarely stay inside municipal lines. Work that starts in Fairfax can continue in nearby communities such as San Anselmo, Sleepy Hollow, Ross, planned as one engagement and carried out by detectives licensed for each place the work goes.
Can a private detective in Fairfax help find assets in a divorce or lawsuit?
Asset searches identify real estate, vehicles, business interests and other holdings through lawful records. Bank account details require legal process, so findings are delivered as leads for your attorney.
How much does a private detective cost in Fairfax?
Cost depends on the type of work and how much field time it needs. Records research is often a flat fee; surveillance is usually billed hourly plus expenses such as mileage. You'll get a written estimate before work begins. See what a private detective costs.
More locations
More private detective pages near Fairfax.
Every community page covers local geography, relevant investigations and state rules. Search all 14,263 cities and towns.
More in Marin County
San Francisco-Oakland-Fremont, CA metro
Confidential inquiry
Discuss your investigative needs in Fairfax.
Call, email or send a short confidential inquiry. You'll get a straight answer about what's possible, what's lawful and what it would involve.