The Investor Quietly Buying Your Condo Non-Warrantable
A single investor accumulating units is the quietest way a small condo goes non-warrantable. The monitoring is pure ledger-watching, and nobody remembers to do it.
The short answer
The single-entity concentration rule caps how many units one owner (or related entity) can hold in a condo project and still keep it warrantable. For projects of 21 or more units, Fannie Mae limits any single entity to roughly 20% of units. Cross that line and buyers lose conventional financing, often discovered only when a closing collapses.
How a building goes non-warrantable with nobody watching
A 34-unit condo in Sarasota loses conventional financing on a Tuesday. A buyer under contract for unit 12 gets a call from her lender: the project no longer qualifies for a conventional loan because a single LLC now owns seven units, past the 20% concentration limit. The seventh unit closed three weeks earlier. Nobody on the board knew.
This is the mechanism almost no small-condo board watches. Everyone tracks delinquencies and reserves. Almost nobody tracks who owns what as a running total against the warrantability thresholds. An investor buying one unit at a time, sometimes under different LLC names that trace back to the same person, tips the project past a line that never shows up on a monthly report.
The damage is not theoretical. Once a project is non-warrantable, every seller inside it is stuck with cash buyers or portfolio loans at worse terms. Values soften. Owners who had nothing to do with the investor pay for the board's blind spot.
Key takeaways
- For 21-plus unit condos, Fannie Mae limits one entity to roughly 20% of units before warrantability breaks.
- The threshold is discovered at a failed closing, not on any standard board report.
- An investor can accumulate under multiple LLC names that trace to one person.
- The monitoring is pure repetitive ledger math, which is exactly why humans forget it.
What the single-entity concentration rule actually says
Plain English
The single-entity concentration limit is the maximum share of units one owner (or a group of related owners) can hold while a condo stays eligible for conventional financing. For projects with 21 or more units, that ceiling is generally 20% under Fannie Mae rules. Smaller projects use different tests entirely.
The rule exists because concentrated ownership is a solvency risk. If one entity controls a large slice of the building and stops paying dues, the whole association's cash flow is exposed to a single decision-maker. Lenders price that risk by refusing to buy the loans, which is what warrantability really means.
The trap for small condos is that the limit is measured by the same beneficial owner across entities, not by the name on each deed. Three LLCs owning two units each are not three investors if they share a manager. Boards that eyeball the deed list see six separate owners. The lender's questionnaire sees one entity at 18% and rising.
| Project size | Single-entity limit | How it usually breaks |
|---|---|---|
| 2 to 4 units | One owner may hold multiple units | Owner-occupancy and budget tests dominate |
| 5 to 20 units | One entity may own up to 2 units | A third purchase tips it |
| 21 or more units | One entity up to ~20% of units | Quiet accumulation across LLCs |
Verify the current thresholds against Freddie Mac and Fannie Mae guidance before you act, because the exact percentages and small-project rules shift. The point is not to memorize a number. The point is that the number is a moving target that a board is supposed to watch and almost never does.
Why it stays invisible until a sale fails
Nothing in the normal management workflow surfaces concentration. Dues get paid, so the investor looks like a good owner. Estoppel and questionnaire requests come in one unit at a time, so no single request reveals the pattern. The board sees financials, not an ownership ledger with a running percentage against the threshold.
The investor rarely announces intent. Accumulation happens over months, sometimes through a friendly agent who buys resale units before they hit the open market. By the time a lender's condo questionnaire asks 'does any single entity own more than 10% of units,' the honest answer has already flipped from no to yes, and a closing is the thing that asks the question.
“The concentration limit is the rare condo risk that is fully knowable in advance and almost never known in advance. Every piece of data needed to see it coming already sits in the ownership records. Nobody is doing the arithmetic every month, so the building finds out at the worst possible moment: mid-closing.”
Todd Paton, Partner, One Home Agent
How an AI agent watches the ownership ledger
An ownership-concentration monitor is an agent that recalculates each entity's percentage of units on every recorded transfer and flags when any beneficial owner approaches the warrantability threshold. It is not making a judgment call. It is doing the running total a human is supposed to do and forgets, then raising a hand before the line is crossed rather than after.
The useful version does three things a spreadsheet cannot. It links deed names to the same beneficial owner (matching manager names, mailing addresses, and registered agents across LLCs), it tracks pending sales the board hears about informally, and it fires a graduated alert: watch at 15%, warning at 18%, urgent at the threshold. In our stack this is the kind of institutional-memory task CAMeron carries per community, so the count survives manager turnover.
- 01
Ingest the ownership ledger
Pull the current owner list from the management system and county records, normalizing names so 'Palm LLC' and 'Palm Holdings LLC' at the same address flag as one candidate entity for human review.
- 02
Compute concentration continuously
Recalculate each entity's share of total units on every transfer and against the correct threshold for the project's size, not a hardcoded 20%.
- 03
Watch the pipeline
Capture pending sales mentioned in board emails or estoppel requests so a projected concentration is visible before the deed records, not three weeks after.
- 04
Alert the board with a paper trail
Send a graduated notice with the math shown and the source records attached, so the board has a defensible record of when it knew and a human decides what to do.
What the board can and cannot legally do about an accumulating investor
The board cannot simply refuse to let one owner buy units unless the governing documents already contain a valid restriction. Most small condos do not. This is the uncomfortable part: the monitor can tell you exactly when you are about to go non-warrantable, and the board may still have limited power to stop it. Early warning buys options; it does not create authority the documents never granted.
| Option | Realistic power | Needs counsel |
|---|---|---|
| Right of first refusal (if in docs) | Can slow accumulation if the association exercises it | Yes |
| Rental or leasing caps amendment | Deters investor demand going forward | Yes |
| Ownership/transfer restriction amendment | Prospective only, high owner-vote bar | Yes |
| Do nothing, disclose the risk | Sometimes the honest answer | Advisable |
| Negotiate directly with the investor | A political call the board must own | Optional |
Any document amendment or restriction is a legal question, not an agent's call, and Florida's condo statutes govern how far a board can go. The value of the monitor is timing: knowing at 15% gives the board months to consult counsel and weigh options. Finding out at a failed closing gives it nothing but a lawsuit-shaped morning. Pair this watch with your reserve and milestone inspection tracking so the board sees all three warrantability threats on one page.
Where the machine stops and the board takes over
The agent's job ends at the alert. It counts, it links entities, it shows the math, and it flags the approach with the underlying records attached. It does not decide whether to fight the investor, amend the documents, or accept the risk. Those are political and legal judgments that belong to the board and its attorney, and no agent should pretend otherwise.
That division is the whole point of putting AI on this task. The repetitive, deadline-blind ledger arithmetic is exactly what a machine should absorb, freeing the board to spend its attention on the part that needs humans: relationships with owners, the vote math on any amendment, and the decision about how hard to push a paying investor who has broken no rule yet.
Bottom line
Single-entity concentration is a knowable risk that boards discover at the worst moment because nobody does the monthly arithmetic. An agent that watches the ownership ledger and flags the approach converts a surprise into a decision with runway. The math is the machine's job. The response stays firmly human.
Put a monitor on your ownership ledger
We build custom operations agents trained on your communities, and the first one is free. If quiet investor accumulation is a risk in your book, we will show you what continuous concentration monitoring looks like for your buildings.
See how it works for your communitiesFrequently asked questions
The single-entity concentration limit is the maximum share of units one owner or related group can hold while a condo remains warrantable for conventional loans. For projects of 21 or more units, Fannie Mae generally caps a single entity at about 20% of units. Smaller projects use tighter unit-count tests.
Sources & further reading