What do tenants say about Jon Diacomanolis?

Jon Diacomanolis has an average tenant rating of 3.2 out of 5 across 3 reviews.

How many violations does Jon Diacomanolis have across their portfolio?

Buildings managed by Jon Diacomanolis average 0.22 open violations per unit, fewer than the citywide average of 0.81.

Would renters recommend buildings managed by Jon Diacomanolis?

50% of tenants who reviewed buildings managed by Jon Diacomanolis would recommend living there.

How many buildings does Jon Diacomanolis own or manage?

Jon Diacomanolis owns or manages 23 buildings totalling 501 units.

Is Jon Diacomanolis on the worst landlords list?

Jon Diacomanolis has not appeared on the NYC worst landlords list.

Has Jon Diacomanolis had any litigation cases?

Jon Diacomanolis has 6 housing court litigation cases across their portfolio.

Has Jon Diacomanolis had any evictions?

Jon Diacomanolis has 4 recorded evictions across their portfolio.

Jon Diacomanolis

Shareholder·23 buildings·501 units

3.2

3 reviews

Highlights

Evictions

Litigation cases

About Jon Diacomanolis

Jon Diacomanolis is a mixed-profile shareholder. Across their buildings, tenants rate them 3.2/5 across 3 reviews, with 50% recommending their buildings and 50% approving of them as an owner or associate. Their portfolio records 4 evictions, 112 open violations, and 6 litigation cases. Data last updated September 5, 2026. Across neighborhoods such as Prospect Heights, Park Slope, and Bay Ridge in Brooklyn, Jon Diacomanolis is a shareholder associated with 23 buildings and 501 units. The portfolio spans multiple neighborhoods across Brooklyn. The buildings were built primarily in the 1900s and 2010s, reflecting multiple generations of development. The portfolio consists mostly of low-rise buildings. About half of the associated buildings have rent-stabilized apartments. Renters can review each building's ratings, reviews, and public records on its own page.

Renter recommendations

Renters recommend associated buildings

Renters approve of this owner or associate

Review summary

Summarized from anonymous rental reviews on Openigloo.

Recent reviews of buildings managed by Jon Diacomanolis reveal a mixed management reputation. While some properties benefit from good location and neighborly communities with responsive management, others suffer from significant issues including poor cleanliness, ineffective garbage management, pest infestations, inconsistent hot water, and unresponsive maintenance. Several tenants report problems such as sewage leaks, noise disturbances, and weak water pressure. Parking and building upkeep have also been noted as areas needing improvement. Prospective renters should expect variability depending on the specific building, with some well-maintained properties alongside others that require major management attention and upgrades.

Reviews

Former tenant·Over 1 year ago

Building falling apart

Pros

Location location location

Cons

Sewage leaks, un responsive maintenance, crazy neighbors

Advice to the owners

New HOA

Former tenant·Over 3 years ago

I found a mouse and I suspect there were several mice

Pros

Good location and cheap

Cons

I had a mouse in my apartment and they kept coming back to eat the poison for a couple of months. Parking also not great. Hot water is not consistent in the shower.

Buildings associated with JON DIACOMANOLIS

Rent-stabilized

2277 Homecrest Avenue

Homecrest

Rent-stabilized

149 Marine Avenue

Bay Ridge

345 Bay Ridge Parkway

3.4(1)

Bay Ridge

Rent-stabilized

460 Ovington Avenue

Bay Ridge

Building ratings

Cleanliness

Trash management

Pest control

Water pressure

Heat

Neighbors

Noise levels

Owner responsiveness

Cleanliness

Trash management

Pest control

Water pressure

Heat

Neighbors

Noise levels

Owner responsiveness

Rents and deposits

Renters received their security deposits back

Electronic rent payments

Open violations

From past 10 years · Updated 5 days ago

Average violations per unit for this owner or associate is better than the city average.

Owner average0.22Violations per unit

NYC average0.81Violations per unit

19Class C

Immediately hazardous

Rodents, pest, mold, inadequate heat or hot water, defective building parts

60Class B

Hazardous

Smoke detector issues, inadequate lighting, no lighting for stairways

27Class A

Non-hazardous

No peephole on a door, no street number on the building, unlawful keeping of animals

6Class I

Missing info

Missing or non-compliant with administrative information orders or filings

FAQs