Property overview

45 St Marks Avenue

Brooklyn, NY 11217

Who owns 45 St Marks Avenue, what the county and city have on record, and a measured sell-signal score — every fact dated and sourced.

Owner of recordMtek 45 St. Marks LLCMailing address: not published by the CityObserved Sep 19, 2026 · NYC Department of City Planning ZoLa (MapPLUTO)

Parcel 3009330055 · Public research profile

Motivated Seller IndexDRAFT MODEL

85/100

About 5.5 in 100 homes with these signals sold within four months (5.1× the New York City rate)100% of model checks have usable evidence

A measured sell-signal score from public records: 8 positive signals observed. It is a base rate for homes like this, not a statement about this owner. How it works ↓

2024 aerial photo of the parcel at 45 St Marks Avenue, Brooklyn, NY — Aerial 2024 with parcel boundary · NYC OTI

Aerial 2024 with parcel boundary · NYC OTI

Assessed value$241,860 total (land $35,100); tax class 1 is assessed at 6% of market value

Tax statusUnverified

Ownership tenureUnverified

Property typeThree-family walk-up (DOF class C0), 3 floors, 3 residential units

THE INDEX

Why this MSI reads 85

Draft model

12 of 22 checked public signals observed, covering 100% of the model. The score is public; the signal-by-signal reasons, source documents, and owner details are in LienSuite.

Method and limits. MSI v0.2-nyc-2026-09 weights twenty-two public signals by how much each one changed the recorded four-month arm’s-length sale rate across all 636,000 privately owned one- to three-family lots in the five boroughs, checked on a holdout the model never saw (the top 0.5% of homes by score sold at 5.7x the citywide rate, the top 1% at 4.1x). Owner mailing addresses are not public in New York City, so absentee and out-of-state ownership are not part of this model.: new-building permit +27, trade permit +18, lien-sale notice (water/sewer) +13, lien-sale notice (property tax) +12, demolition permit +12, bought since 2024 +9, heat / hot-water violation +9, unsanitary / dirty / rodent complaint +8, hpd class b violation +6, construction / plumbing complaint +6, late-stage lien notice (30- or 10-day) +6, general-construction permit +4, star exemption (owner-occupied) +4, maintenance complaint +3, hpd class c violation +2, two or three units -3, structural violation -4, vermin / garbage violation -7, sidewalk shed / scaffold / fence permit -9, solar permit -12, structural / safety complaint -12, permit valued at $50,000 or more -14. The "in 100 homes" figure is the model's fitted probability for this combination of signals. It describes homes like this one in aggregate; it is not a claim about this owner's intentions, and it is not LienSuite's paid deal score.

THE RECORD

Property details

Dated sources

Property type: Three-family walk-up (DOF class C0), 3 floors, 3 residential units
Owner of record: Mtek 45 St. Marks LLC (mailing address not published by the City)
Assessed value: $241,860 total (land $35,100); tax class 1 is assessed at 6% of market value
STAR exemption: None on file for tax year 2026
Building area: 3,500 sq ft (2,700 residential)
Lot size: 2,000 sq ft
Year built: 1880, altered 2005
Last recorded sale: $2,850,000, March 5, 2025
Building permits: 6 DOB permits in the last 12 months: general construction (alteration on existing 3-story with basement &cellar, two (2) family into one (1) issued October 17, 2025; structural (alteration on existing 3-story with basement &cellar, two (2) family into one (1) issued October 17, 2025; plumbing (remove & reinstallation of plumbing system throughout existing 1-family dwelling) issued January 14, 2026; …
Housing code violations: 6 HPD violations in the last 12 months (1 class C, 4 class B, 1 class A); latest January 7, 2026
311 requests: 7 in the last 12 months: general construction/plumbing (6); dirty condition (1)

Parcel reference: 3009330055. Facts reflect the listed observation dates and may have changed since then.

OWNERSHIP AND TAXES

Research snapshot

Observed tax balanceNot verified

Delinquency periodNot verified

Last recorded transferNot connected

Transfer amountNot connected

Source details not yet connected. A tax balance is not proof that a property is for sale.

CHANGES OVER TIME

Property timeline

Mar 4, 2026
311: General Construction/Plumbing
Debris - Falling Or In Danger Of Falling, status Closed.
NYC 311 service requests (NYC Open Data) · checked Sep 19, 2026
Jan 14, 2026
Permit: Plumbing
REMOVE & REINSTALLATION OF PLUMBING SYSTEM THROUGHOUT EXISTING 1-FAMILY DWELLING UNIT,3-STORY WHITH BASEMENT & CELLAR AS PER PLAN SHOW..
DOB NOW approved permits (NYC Open Data) · checked Sep 19, 2026
Jan 7, 2026
HPD inspections: 6 violations
§ 27-2005 admin. code: properly repair the broken or defective brown stone spolling at all · § 27-2005 admin. code: properly repair the broken or defective brown stone treads and plat · § 27-2013 admin. code: paint with light colored paint to the satisfaction of this departme.
HPD housing maintenance code violations (NYC Open Data) · checked Sep 19, 2026
Oct 17, 2025
Permit: General Construction
ALTERATION ON EXISTING 3-STORY WITH BASEMENT &CELLAR, TWO (2) FAMILY INTO ONE (1) FAMILY D.U. AS PER PLAN SHOW. OBTAIN NEW C OF O..
DOB NOW approved permits (NYC Open Data) · checked Sep 19, 2026
Oct 17, 2025
Permit: Structural
ALTERATION ON EXISTING 3-STORY WITH BASEMENT &CELLAR, TWO (2) FAMILY INTO ONE (1) FAMILY D.U. AS PER PLAN SHOW. OBTAIN NEW C OF O..
DOB NOW approved permits (NYC Open Data) · checked Sep 19, 2026
Mar 5, 2025
Recorded sale
$2,850,000.
DOF annualized and rolling property sales (NYC Open Data) · checked Sep 19, 2026

NEARBY

More records nearby

Facts on this page reflect their observation dates. Confirm the parcel and current records with the county before acting.