How to build a target account list from scratch

A target account list is the set of companies your team has decided to pursue now. Each one fits your ideal customer profile, has a reason to buy that you can date, and has people you can name who own the problem. It is shorter than your total market, and it changes as companies move in and out of their buying moments.

The companies left out matter as much as the ones kept. A list where every rejected company has a recorded reason can be checked, explained and improved. A list without them cannot: nobody knows whether a known company was missed or ruled out on purpose.

• Key takeaway: start from events, then check fit, then find people.
• Key takeaway: every fact needs a source and a date, including size.
• Key takeaway: every company left out keeps the rule it failed.

Because the event is what makes now the right time, and a filter cannot see it. Gartner’s B2B buying journey research states that “99% of B2B purchases are driven by organizational changes”. A new executive, a new owner, an acquisition or a new plant is the change. Search for those first, then check whether the companies they name fit.

Filters also inherit the age of the data behind them. In a SalesOne test on Sep 29, 2026, records in one company-data API were a median 20 months since their last refresh, and 28.9% of 499 companies pulled with industry and size filters were clear misfits. That was one pull for one profile, but it shows why size and ownership need a source and a year.

1. Start from the profile

Write the profile as rules before you search: must, prefer and exclude criteria, the buying events you count with a window for each, and the committee roles you need. Add the exclusion lists, such as customers, open deals, competitors and partners, so nobody researches them by mistake.

2. Search for dated events

Search newest and strongest first: executive appointments, acquisitions and new owners, plant openings, and filings. A press release, a regulatory filing or a trade press story gives a date and a source. Check the event is about this company, not its parent or a customer, and that it still holds: the executive has not left and the deal was not called off.

3. Check fit, with a source for each fact

• What it sells: from its own site, in one line. Industry codes in records can be wrong.
• Size: revenue or headcount, with the source and the year, for example “about 420 employees (state business filing, 2026)”.
• Ownership: independent, founder-owned, private-equity backed or a subsidiary, with the owner and the year.
• Independence today: search the name with “acquired” and “to be acquired”. A pending sale changes who decides.
• Headquarters: confirm the country and state, if your profile limits them.

4. Record a reason for every reject

Write the first rule each rejected company fails, in the same words every time, with the evidence: “Failed: ownership. Sale to a larger group pending, filing Jun 12, 2026.” Consistent labels let you count reasons across the list and see which rule does the most work.

5. Map the buying committee

For each company kept, find the people in the roles your profile names, each with a source and a date. Forrester’s 2026 State of Business Buying release says “the typical buying decision now includes 13 internal stakeholders and nine external influencers”, so one contact is rarely enough. Use only current people: a newer release naming a successor means the person has left. Prefer company pages, filings and press over a professional-network profile alone.

6. Keep the list fresh

A list starts to age the day it is built. Windows close, deals complete and people move: the US Bureau of Labor Statistics reported in Sep 2026 that median tenure with a current employer was 4.1 years in January 2026, and that 20.6% of wage and salary workers had been with their employer a year or less. Re-check each account’s event and people before outreach, and re-check timing rejects when a new event appears.

Here is a small sample run. The profile: a supplier-quality software company selling to US metal and plastics manufacturers with 200 to 1,000 employees, independent or founder-owned. It counts a new operations leader inside 90 days and a new or expanded plant inside 180 days. Checked Oct 1, 2026. The companies and people are fictional; details are invented for the example.

One account kept, three rejected, each for a different rule. Brightwater is worth a re-check later, because it fits and failed only on timing. Lakeshore and Tamarack are not, unless the profile changes.

• Starting from a filtered export and adding signals later. Many good-fit companies have no live event, so the list fills with accounts that are not ready.
• Taking size from a range with no source or year. Size outside the band was the second most common reason S1 agents rejected a company.
• Missing changes of ownership. A company acquired last quarter often buys through its new parent.
• Leaving companies out silently. Without a reason, nobody can tell a broken rule from a good one.
• Counting names as coverage. Several people in one department are not a buying committee.
• Building the list once a year. Events have windows, so the list needs re-checking as they close.

S1 agents follow the same order: dated events first, then fit with a source and a year, then the buying committee. In four production research runs in October 2026, they ran about 31 searches and opened about 7 pages for each account kept, and turned down about three of every four companies they checked: 802 rejects from 1,051 companies decided. Every reject keeps the rule it failed and the evidence.

For each account kept, S1 agents found about four people per account, 85% backed by sources beyond professional-network profiles, such as filings, company pages and press releases. Client names are withheld, and the method is on the S1 agents method page. S1 agents do the homework. Your team builds the relationship.