One name behind eight-hundred-and-eighty-eight doors.

The top ten control half the city. One of them is Mandy.

Of the roughly 4,600 corporate-owned parcels in New Haven that Elm City Explorer has linked to a named ownership group, the ten largest hold about half. The single largest — Mandy — is, alone, responsible for more than one in five. It would take the full combined portfolios of the second, third, and fourth largest landlords to equal Mandy's parcel count. That's not primacy. That's a different category.

For comparison: Menahem Edelkopf, the #2 private landlord, controls roughly 416 parcels across 229 LLCs. Reichman Brodie, the #3, has 144 across 17. Mandy's footprint is nearly double Edelkopf's and six times Reichman Brodie's.

A landlord that types in ALL CAPS.

Mandy operates at a scale that requires structural camouflage. Rather than holding property under one name, the network files a new LLC for almost every transaction. The names follow a dozen recognizable prefixes that, once you know them, you can't unsee on the Secretary of State's search page:

1. 1NETZ *203 parcels
2. 2SFR *96 parcels
3. 3ABCD *74 parcels
4. 4REF * / REF II *62 parcels
5. 5GUR NEW HAVEN *53 parcels
6. 6REAL ESTATE GROUP *41 parcels
7. 7DANNY GUY * / DANNY AND GUY *37 parcels
8. 8MAGEN *32 parcels
9. 9BENTZY *25 parcels
10. 10CLUB *23 parcels
11. 11MDA *22 parcels
12. 12GNH *21 parcels

Twelve prefixes account for roughly 700 of 888 parcels — about 79% of Mandy's footprint. The entities are legally distinct. The principals on those filings, the registered agent, and the business address are not: most resolve to Mandy Management LLC at 55 Whalley Avenue or to a small set of Gurevitch-family names appearing across dozens of LLCs simultaneously.

That caveat matters. The 888 count is what our clustering algorithm links to the Mandy beneficial-owner network through shared principals, agents, and addresses. Some fraction of those buildings are third-party owned and Mandy-managed. Reporting this cleanly requires distinguishing landlord from manager — something a Secretary of State filing doesn't always do.

What 2021 looked like, at one deal every 32 hours.

The Mandy portfolio was built unevenly. The first decade of operation (2002 through roughly 2018) averaged around a dozen acquisitions a year — a pace consistent with a growing regional landlord buying steady stock. Then the pace changed.

In 2021, Mandy acquired 274 parcels — averaging a closing every 32 hours, seven days a week. The three-year window of 2019 through 2022 produced 605 acquisitions, or roughly 68% of the entire portfolio. That is not organic growth of a family real-estate business. That is a deliberate consolidation.

The 2021 peak tracks neatly with the national single-family-rental (SFR) buying boom. Institutional capital flooded small-and-mid-market housing nationwide during and after the pandemic. What makes the Mandy case worth naming: it happened in a compact old Northeastern city at the parcel scale — in neighborhoods where multi-family housing has been the fabric for a century. The 2021 acquisitions were mostly existing two-families and three-families, not new construction. Each one took an owner-occupied or small-owner property off the market and moved it into corporate rentals.

The map Mandy has redrawn.

Open the interactive map and filter for Mandy. The parcels cluster hard in a diagonal band running from Newhallville through Dixwell and into the Hill — traditionally Black, historically disinvested, currently Yale-adjacent. Fair Haven, Dwight, and West River account for most of the rest. These are the neighborhoods where a single additional absentee landlord doesn't change the character — but ten different ones collectively do.

Concentration by ownership group is, in housing-policy terms, neither inherently good nor bad. Large owners have more capital to maintain buildings. They also have more leverage in rent-setting and more incentive to raise rents in lockstep across a submarket. The research on consolidation's effects on tenant outcomes is mixed and contested. The research on transparency is not: a neighborhood where two dozen LLCs turn out to be one owner is a neighborhood where tenant complaints, code enforcement, and displacement pressure all accumulate at the same door.

In the most recent weekly refresh, Mandy's parcel count grew by 17. Menachem Ezagui, a different Orthodox-affiliated landlord family, shrank by the same amount as our clustering algorithm re-assigned borderline entities to the larger network. That quiet 17-parcel shift, invisible in any single public filing, is the signal this tool exists to surface.

A useful question is worth more than an easy answer.

A tool that tells you "Mandy owns 888 properties" is only useful if the next click lets you ask why. On Elm City Explorer, soloing the Mandy group populates the right-side briefing with the acquisition cadence, the 114 LLC names, the top neighborhoods, and — where editorial reporting has filled in what algorithmic clustering cannot — a cited-by badge pointing back to the journalism. The point is not to produce a verdict. The point is to make the next question easier to ask and the next answer easier to check.

Things a reporter, tenant, or policymaker looking at this dataset might reasonably want next:

• How do code-enforcement records and 311-style complaint rates compare across Mandy's 888 parcels versus the rest of the corporate-owned stock?
• What share of Mandy's 2021 acquisitions came from owner-occupant sellers versus other small investors? (Sale-history records give us prior-owner data; the app already surfaces this.)
• Which of the 114 LLCs are currently in inactive or forfeited status at the CT Secretary of State — a signal of either paperwork debt or deliberate dormancy?
• Are Mandy's rents, where they appear in public subsidy filings (Section 8, Rental Assistance Program), clustered at the bottom, middle, or top of their neighborhoods?

Each of those is a story. Each is resolvable from the data this tool already aggregates. None of them is a quick tweet.