Skip to content

306 23 Street, Brooklyn

Brooklyn • Block 00900 • Lot 0072 • Zip: 11215

Address

Primary address: 306 23 Street, Brooklyn
Borough: Brooklyn
Zip code: 11215
Block: 00900
Lot: 0072
BBL: 3009000072
Unified address ID: 3009000072

Land use and zoning

Land use: One & Two Family Buildings
Zoning: R6B (Residential)
Lot type: Inside
Lot area: 1,669 sq ft
Lot dimensions: 16 ft x 100 ft
Built FAR: 0.59
Max residential FAR: 2
Max facility FAR: 2
School district: 15

Building

Building class: One Family Dwellings - Two Stories Detached (Small or Moderate Size, With or Without Attic) (A1)
Year built: 1901
Last altered: 1901
Floors: 2
Total units: 1
Residential units: 1
Building area: 985 sq ft
Building dimensions: 16 ft x 25 ft
Basement: Below grade full basement
Owner: MUELLER, MATTHEW H

Latest assessment

Assessment year: 2018/19
Tax class: 1 - 3 Unit Residence
Market value: $1,571,000
Total assessment: $5,671
Land assessment: $942
Exempt total: $3,260
Assessment owner: ROSEMARY J. DONNELLY

Neighborhood

The area this lot falls inside, and the commute Hoodkit measures from it.

Neighborhood Sunset Park
District Brooklyn

Getting around

Estimated 5 days ago
Nearest station
45 St N W R

About 6 minutes on foot · 374 m

  • Downtown Brooklyn 28 min 6 walking, 22 riding
  • Fulton Street 38 min 6 walking, 32 riding
  • Union Square 39 min 6 walking, 33 riding
  • Times Square 44 min 6 walking, 38 riding
  • Grand Central 49 min 6 walking, 43 riding
  • Penn Station 49 min 6 walking, 43 riding

Around this address

Transit and places within 0.5 miles of the lot.

Getting out

Updated less than a minute ago
Subway
Railroad
Ferry
Bus
Citi Bike

Places nearby

Hoodkit's own ranking, not the closest first

Activity

Sales, filings, permits and violations from every dataset, in one order.

2026

  1. DOB filing Mar 25, 2026 $0

    Alteration Type III

    FILING HEREWITH BUILDERS PAVEMENT PLAN IN CONJUNCTION WITH NEW BUILDING APPLICATION #B00806399.

2025

  1. DOB NOW filing Dec 16, 2025 $30,000

    Alteration

    Permit Entire

  2. DOB NOW filing Oct 20, 2025 $35,000

    Alteration

    Permit Entire

  3. DOB NOW filing Apr 9, 2025 $277,375

    Alteration

    Approved

2024

  1. DOB NOW filing Nov 17, 2024 $300

    Alteration

    Permit Entire

  2. DOB NOW filing Nov 17, 2024 $277,375

    Alteration

    Permit Entire

2023

  1. DOB NOW filing Sep 26, 2023 $100,000

    New Building

    Filing Withdrawn

2022

  1. DOB filing Sep 15, 2022 $0

    Demolition

2021

  1. Sale May 6, 2021 $720,000

    Changed hands

    306 23RD STREET

2003

  1. Sale Jan 28, 2003 $0

    Changed hands

    306 23 STREET

The most recent 6 events from each dataset, so no one source takes the axis. Each tab holds the full record.

Property Contacts

Contact information aggregated from multiple government sources

2

Building Permits

Owner information from Department of Buildings filings

Owner
OWNER
MUELLER FANNY
DOB Filing 03/25/2026
Owner
N/A
MATTHEW MUELLER
DOB Filing 09/15/2022
3

Recent Building Permits

Owner information from recent DOB NOW filings

Owner
PR
NEW YORK, NY, 10018
DOB NOW 12/16/2025
4

Deed Records

Parties from ACRIS deed and mortgage records

PARTY ONE
MUELLER, MATTHEW H
306 23RD ST
BROOKLYN, NY, 11215
ACRIS 10/06/2021
PARTY ONE
MUELLER, FANNY
306 23RD ST
BROOKLYN, NY, 11215
ACRIS 10/06/2021
PARTY 1
RIDGE ABSTRACT CORP
9201 FOURTH AVE,S UITE 502
BROOKLYN, NY, 11209
ACRIS 10/04/2021
GRANTEE/BUYER
MARY ANTOSIEWICZ TRUST
207 HILLS STREET
BOONTON, NJ, 07005
ACRIS 05/06/2021
MORTGAGEE/LENDER
MORTGAGE ELECTRONIC REGSTRATION SYSTEMS, INC
P.O. BOX 2026
FLINT, MI, 48501
ACRIS 05/06/2021
GRANTEE/BUYER
MUELLER, FANNY
17 JACKSON PLACE
BROOKLYN, NY, 11215
ACRIS 05/06/2021
GRANTEE/BUYER
ROSEMARY J. DONNELLY, AS TRUSTEE
207 HILLS STREET
BOONTON, NJ, 07005
ACRIS 05/06/2021
GRANTOR/SELLER
DONNELLY, ROSEMARY J
207 HILLS STREET
BOONTON, NJ, 07005
ACRIS 05/06/2021
GRANTOR/SELLER
MARY ANTOSIEWICZ TRUST
306 23RD STREET
BROOKLYN, NY, 11215
ACRIS 05/06/2021
GRANTEE/BUYER
MUELLER, MATTHEW H
17 JACKSON PLACE
BROOKLYN, NY, 11215
ACRIS 05/06/2021

Show all recorded documents

5

Property Records

Owner information from assessment and PLUTO records

Assessment Owner
ROSEMARY J. DONNELLY
Assessment Roll
PLUTO Owner
MUELLER, MATTHEW H
PLUTO