How long does a private detective investigation take?
Some answers take an afternoon. Some take a season. Here is what drives the clock on each kind of case, and how to shorten it.
Typical timelines by case type
| Case type | Typical timeline | What moves it |
|---|---|---|
| Background check (standard) | 1–5 business days | Number of counties searched; certified copies; out-of-state records |
| Skip trace / locate | Same day to a week | Quality of starting data; how hard the subject is hiding |
| Asset search | 3–10 business days | States and counties involved; business entities |
| Activity check | One session | Choosing the right window |
| Infidelity / cohabitation surveillance | Several sessions over 1–4 weeks | Subject’s pattern; number of private detectives; weather and events |
| Custody documentation | Weeks, tied to exchanges and schedules | Court dates; the specific conduct in question |
| Workers’ comp / insurance surveillance | 2–3 sessions over 1–2 weeks | Claimant activity; medical appointments |
| Criminal defense casework | Weeks to months | Discovery volume; witness availability; trial calendar |
| Process serving | Same day to 10 days | Attempts needed; evasive defendants; gated communities |
Note: These are planning ranges from ordinary Middle Tennessee casework, not promises. Your estimate will be specific.
What makes a case faster
- Precise starting information: addresses, vehicles, employers, schedules, photos.
- A clear question. “Is he living there?” resolves faster than “tell me everything.”
- Choosing the window that matters: the Thursday night, the custody exchange, the claimant’s workday.
- A deadline we know about, so staffing is planned around it.
- Attorney involvement early, so the scope is tied to what the case actually needs.
What makes a case slower
- Subjects who are erratic, rural or counter-surveillance aware.
- Records that require certified copies from distant counties or other states.
- Clients who contact the subject or post online and tip them off.
- Scope that expands without a decision point.
- Weather, holidays and large Nashville events that change patterns (think CMA Fest week).
How we plan a timeline
At intake we set three things: the question, the first block of work and a decision point. Most engagements then look like a records phase (days) followed by a field phase (sessions) and a reporting phase (a few days). You get updates after each session and a conversation at each decision point. If a case can be answered in one session, we say so; if it needs four, we explain why.
The three phases, in detail
Records phase (days)
Identity confirmation, address history, vehicles, business entities, court records, social media. Most of this returns within one to three business days. Certified copies from county clerks and out-of-state records are the usual delays.
Field phase (sessions)
Surveillance, verification visits, interviews and canvassing. Planned as discrete sessions aimed at the windows that matter, not as continuous coverage. A session is typically a block of several hours; a week of coverage is unusual and rarely necessary.
Reporting phase (days)
Logs assembled, exhibits organized and preserved, narrative written, chapter-officer review, delivery. A few business days after the last session, faster when a hearing requires it.
Four real-world shapes
- “Is he where he says he is on Thursdays?” One records pass and two Thursday sessions: answered in ten days.
- “Is my ex’s boyfriend living there?” Records plus six sessions across three weeks: answered in about a month, with a pattern strong enough for a modification petition.
- “Find the witness from the police report.” Identified from a partial name in a day; located and interviewed within a week.
- “Can this workers’ comp claimant really not lift?” Claim review, then three sessions timed to known activity over two weeks: answered in about three weeks.
Setting a deadline that works
Tell the agency the date that matters and what you need by then, not just “as soon as possible.” The plan will work backward from it: which sessions, in which order, with what margin for a rained-out day. If the date is unrealistic, a professional will say so on the first call rather than fail quietly. And if the date moves, say so; staffing is planned around it.
What ‘done’ means
An investigation is finished when the question from intake has been answered to the standard the case needs, or when further work is unlikely to change the answer. Both are legitimate endings, and a professional agency will name which one it is. “We did not observe the conduct across six well-timed sessions” is a result; it means either the conduct is not happening or the window is wrong, and the report will say which is more likely. The trap to avoid is open-ended surveillance that continues because nobody decided to stop.
Updates and decision points
You should hear from the agency after every field session, in a few sentences: what was observed, what was not, and whether the plan holds. At each pre-agreed decision point you should get a recommendation and a choice, not an invoice for work you did not approve. If you are not hearing from your private detective, call; silence is usually a scheduling issue, but it should never be the norm.
Nashville factors that affect timing
- Courthouse hours and clerks. Certified records in Davidson County are usually quick; some rural counties take days.
- Traffic and events. Surveillance planned around downtown events and interstate construction avoids wasted sessions.
- Gated communities. Lawful access takes planning; entrance coverage sometimes replaces close observation.
- Weather. Rained-out sessions are rescheduled, not billed as results.
- Court calendars. Testimony scheduling follows the judge’s docket, not ours.
Can you pay to go faster?
Rush work exists and is priced as such: same-day surveillance starts, expedited records, after-hours locates. What money cannot buy is the subject’s cooperation; a cohabitation pattern needs nights to pass, and a witness has to be home to be interviewed. Rush compresses the agency’s part of the timeline. The rest is set by the facts, and a good estimate separates the two.
Why surveillance cannot be rushed past the facts
People sometimes ask for ‘a week of surveillance’ as if coverage were the goal. It is not; the answer is. A cohabitation case needs the nights to pass because the fact being proven is a pattern of nights. An infidelity case needs the suspicious window to occur, which may be weekly. A claim surveillance needs the claimant to do what the claimant does, on their schedule. More hours on days when nothing is scheduled produce nothing but invoices.
That is why professional planning is built around windows and decision points rather than blocks of coverage. It is also why the first result often changes the plan: an activity check that shows the stated whereabouts are true may end the matter; one that shows they are false focuses the next sessions. A good agency explains this at intake so that the timeline you are given is a plan, not a guess.
A timeline that held
A Williamson County attorney called on a Monday with a custody hearing set for the following Thursday week. The question: whether the other parent’s new partner, who had a prior conviction, was present during parenting time. By Tuesday a lawful background report confirmed the conviction; Wednesday and the following weekend, three sessions from public vantage points documented the partner at the home and at a school pickup. The report went to counsel on the Tuesday before the hearing, and the private detective testified on Thursday. Nine business days, because the question was specific and the deadline was known on the first call.
Rush and urgent work
A missing adult, an order-of-protection hearing, a custody exchange tomorrow or a defendant leaving the state call for same-day work. Pinnacle staffs rush matters from the Nashville office across Davidson, Williamson, Rutherford, Sumner and Wilson counties and coordinates statewide through Delator Group. Rush carries a premium that is stated up front.
Questions people ask before they call
Usually, if you call early. Tell us the date on the first call and we will tell you honestly what can be done by then.
Sometimes one session. More often a few sessions aimed at the right windows. We stop and talk once the question is answered.
Common causes: vague scope, poor starting information, no decision points, or an agency juggling too many cases. We plan against all four.
Many locates return within a day when the starting data is good. Evasive subjects take longer.
Yes. Much surveillance happens on evenings and weekends because that is when the conduct happens.
Typically a few business days after the last session, faster when a hearing requires it.
Services and resources
Talk to a Nashville private detective.
Call 615-977-9929 or email contact@delatorgroup.com. Confidential, no obligation, all 95 Tennessee counties.