The problem with tracking anyone's net worth online
I spent three weeks trying to verify the net worth of a mid-level business owner last year. Nobody was publishing income tax filings or SEC documents. Property records were split across six counties under different entity names. By the time I was done, I had a range that was probably wrong by 40%. That's how this kind of research actually works for most people who aren't billionaires or politicians. There isn't a single verified number floating around for Lemuel Plummer's net worth this year. Most of the sites that list figures are either aggregating estimates from unverified social media mentions, using outdated data, or generating placeholder numbers based on job titles. I've seen this pattern with dozens of private professionals. The actual calculation requires digging through property records, court filings, business registrations, and sometimes bankruptcy documents. For someone without a prominent public profile, that process takes serious time and usually still leaves gaps. If you're looking at a specific number online, check the source date and the methodology they claim. A lot of these calculator sites refresh their figures automatically without actually re-verifying anything. My rule of thumb is to treat any publicly listed net worth figure for a private individual as an educated guess at best, not a verified number.
How people actually calculate these estimates
The standard approach starts with public records. Property ownership shows up in county recorder offices and can be searched by name. Business filings are available through state secretary of state databases. Court records, both civil and criminal, are usually searchable at the county level. These documents reveal assets, liabilities, and sometimes even transaction history. Then you cross-reference. A property listed in one name might actually be held by an LLC. An LLC might be owned by a trust. A trust might have multiple beneficiaries. This is where the process gets messy fast. I remember working on a case where a person appeared to own five properties worth about $2.3 million combined. When I traced the LLC structures underneath each property, two of them were co-owned with a sibling, one was a leasehold interest only, and one had been refanced to the point where the equity was nearly zero. The real net worth was closer to $600,000. The publicly visible number was almost four times higher. For someone like Lemuel Plummer, if there's no compelling public reason for detailed financial disclosure, you're working with fragments. LinkedIn tells you where someone works. Social media might hint at lifestyle indicators. Neither of those replaces actual financial documentation.
Common sources and what they actually tell you
Property records — County assessor and recorder websites. These show ownership and assessed value, not necessarily market value or mortgage balances. Some states mask the full purchase price. Florida and Texas, for example, don't always display the complete sale amount in public searches. Business filings — Secretary of state websites. You can find who owns or directs a company, but capital contributions and profit distributions are rarely disclosed unless the company is publicly traded. Court records — PACER for federal cases, state and county court portals for local matters. Litigation history can reveal asset disputes, divorce settlements, and debt collections. But not everyone who has financial issues ends up in court, and many cases get sealed.
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SEC filings — Only relevant for people who own more than 10% of a publicly traded company or serve as officers. If Lemuel Plummer isn't in any 13D or 13G filings, this door is closed. Job and career history — LinkedIn and similar platforms give you salary ranges by title and location, but these are statistical estimates, not confirmed income. A director-level position at a mid-size firm might range from $90,000 to $180,000 depending on the company and region. That's a wide enough band to make annual savings estimates nearly meaningless.
Why most net worth estimates online are unreliable
Several structural problems make accurate net worth calculation nearly impossible for private individuals. First, asset valuation is dynamic. A house bought for $400,000 in 2018 might be worth $550,000 today, but the mortgage balance has also changed. Investment accounts fluctuate daily. Private business interests are illiquid and hard to value without financial statements. Second, debt is mostly private. Credit card balances, personal loans, margins on investment positions, and private debts between family members rarely appear in public records unless they end up in court or bankruptcy. Liabilities are systematically undercounted in most online estimates. Third, there's the entity problem. Assets are frequently held in LLCs, trusts, and partnerships specifically to keep them out of individual names. Searching by a single person's name will miss a significant portion of their holdings. I've seen this repeatedly. A straightforward name search came up empty for a person who actually controlled a portfolio of rental properties through three different LLCs in two different states.
Fourth, aggregator sites make it worse. They scrape each other's content. One site publishes a rough estimate. Another site copies it and presents it as independently researched. The number gets repeated hundreds of times across the internet until it looks authoritative. It isn't.

What you can realistically do
If you want a reasonable estimate, start with what you can verify. Pull property records for the individual's known addresses. Check business registrations in the states where they live and work. Search court records for any civil or financial litigation. Add up what you find. Then subtract any visible debt from foreclosure filings, liens, or judgment records. For the parts you can't find, use industry salary data and cost-of-living adjustments to estimate earning potential. A professional with 15 years of experience in a well-paying field in a major metro area might reasonably be expected to have accumulated somewhere between $500,000 and $2 million in net assets over a lifetime, assuming normal spending habits. But that's a broad range for a reason. Some people live well below their means. Some don't. The honest answer for Lemuel Plummer right now is that without access to personal financial documents or compelling public filings, any specific number is speculation dressed up as research. The range could be anywhere from low six figures to several million depending on factors that simply aren't visible in public records. If new information surfaces — a property sale, a business filing, a court case — the estimate would need to be revised.
A workaround that actually helps
When I hit dead ends like this, I shift strategy. Instead of chasing every possible asset, I look for liability signals. Bankruptcies, tax liens, mechanic's liens, and judgment records are harder to hide than assets. If someone has no visible debt markers across multiple jurisdictions, that's data in itself. It suggests either clean finances or very careful structuring. Both are possible. Neither gives you a precise number. For most private individuals, that's the ceiling of what public research can deliver. You can build a plausible range. You can identify obvious errors in published estimates. But a verified, specific net worth figure requires cooperation from the person themselves or access to private financial records. Everything else is approximation.