CircleBiz has spent 23+ years turning suspicion into certainty — quietly, legally, and without judgment. Widely regarded as the best detective agency in Delhi for matrimonial, corporate, and personal investigations.
Deciding to hire a private investigator is rarely easy — it usually follows weeks of doubt: a marriage proposal you want to be sure about, a business deal that feels off, or a partner whose story doesn't quite add up. CircleBiz is a Detective Agency in Delhi, operating out of Dwarka for over two decades, and in that time we've closed more than 15,000 cases across matrimonial checks, infidelity investigations, corporate due diligence, and missing person searches. Because our evidence is gathered legally, it holds up if you ever need it in court — and because we work quietly, your case stays exactly where it belongs: between you and us.
Three categories of casework, handled by the same team of field investigators — from a single background check to a multi-week surveillance operation.
Before or after the wedding, most clients don't come to us out of suspicion — they come wanting peace of mind before a life-changing decision, or clarity when something feels wrong.
Businesses lose money every day to fraud, dishonest employees, or partners who weren't who they claimed to be. We build the facts your decisions can stand on.
From a lost family member to a case that needs airtight documentation, this is the day-to-day work of a full-service detective agency in Delhi.
Anyone can claim to be the best. Here's what we can actually show for it.
Not a marketing number — a caseload built over 23 years of matrimonial, corporate, and personal investigations across India.
We're a registered detective agency, so evidence is collected the right way and can hold up if your case ever goes to court.
Field agents work discreetly, records stay secured, and no one outside the client ever learns a case exists.
You get a clear cost estimate at the free consultation stage — no surprise charges halfway through an investigation.
Based in Dwarka with coverage across every zone of Delhi NCR, plus 90+ cities nationwide and select international cases.
Investigations don't wait for business hours, and neither do we — call or WhatsApp any time, day or night.
Reach our team on +91-7669484555 — no forms, no waiting for a callback.
Explain your situation in as much detail as you're comfortable with. We'll outline the approach, timeline, and cost.
A dedicated investigator is assigned to your case, with regular, confidential updates until it's resolved.
CircleBiz operates as a detective agency in Delhi with dedicated coverage across every zone of the capital, plus the wider NCR belt.
Saket, Vasant Kunj, Vasant Vihar, Greater Kailash, Hauz Khas
Dwarka, Janakpuri, Rajouri Garden, Vikaspuri
Rohini, Pitampura, Model Town, Civil Lines
Preet Vihar, Laxmi Nagar, Mayur Vihar, Anand Vihar
Connaught Place, Karol Bagh, Paharganj
Gurgaon, Noida, Faridabad, Ghaziabad, Sonipat, Panipat
Don't see your city listed? Reach out anyway — most investigations don't require us to be physically local, and CircleBiz already covers 90+ cities across India along with select cases in Dubai, Mauritius, Nepal, and the USA.
The team stayed professional and thorough throughout, with timely updates that gave us real peace of mind during a difficult time.
Discreet and reliable from start to finish — they helped us work through a sensitive corporate matter without it becoming office gossip.
Our matrimonial investigation was handled with real care and confidentiality. We'd recommend them to anyone in a similar position.
Quick, honest answers about legality, confidentiality, pricing, and how CircleBiz works.
Yes. Hiring a private detective agency in Delhi for background checks, matrimonial verification, or corporate due diligence is completely legal in India, provided the agency stays within the law — no unauthorized phone tapping or trespassing. CircleBiz is a registered agency that only uses legally admissible methods.
CircleBiz is widely regarded as one of the best detective agencies in Delhi, backed by 23+ years in operation and 15,000+ cases closed across matrimonial, corporate, and personal investigations. When comparing agencies, look for a valid license, transparent pricing, and a verifiable track record — not just marketing claims.
Cost depends on the type of case, its duration, and whether surveillance or travel is involved. A straightforward background check costs far less than a multi-week infidelity or corporate surveillance case. CircleBiz shares a clear estimate at the free consultation stage, with no hidden charges later.
Completely. Case details are shared only with the client, field investigators work without revealing the purpose of their enquiries, and every record is stored securely. No one outside the client — not family, not associates — is informed unless the client chooses to.
Yes. CircleBiz gathers evidence through legally sound methods — documented surveillance, verified records, and witness statements — so findings can support divorce, custody, or fraud proceedings, and the team helps structure reports so they hold up under scrutiny.
All of Delhi NCR — South, West, North, East, and Central Delhi — plus Gurgaon, Noida, Faridabad, and Ghaziabad. CircleBiz also runs cases in 90+ cities pan-India and select international locations including the UAE, Nepal, Mauritius, and the USA.
A standard pre-matrimonial background check usually takes 5–7 working days. Infidelity or surveillance cases can run 2–4 weeks depending on the behaviour pattern being observed, while corporate due diligence timelines vary with how many entities need verification.
Call or WhatsApp +91-7669484555 and describe your situation in as much or as little detail as you're comfortable with. A case consultant will walk you through the likely approach, timeline, and cost during a free initial consultation before anything begins.
Every case starts with a free, confidential conversation. No pressure, no obligation — just clarity on what's possible.