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  4. Mark O'brien Development Llc

Mark O'brien Development Llc

110 Saint Mark's Place Suite 17

New York, NY

Team Members

Mark Obrien

Brian Worthman

Brian Worthman

Disclaimer: This page displays real estate agents and offices generated from active and closed MLS listings affiliated with this office. While we make every effort to provide accurate information, there may be inaccuracies due to factors such as fluctuating staff, office name changes, changes of address, and other varying circumstances. If you are the owner of the office or an agent listed here and would like to advertise, please fill out the form at https://www.realty.com/advertise.

Listings & Recent Sales (42)

Active Rental Sold

For Sale (1)

Address Bed / Bath Listing Price
Picture of 150 Rivington Street 2-F
150 Rivington Street 2-F New York City, NY
Living Area: 545 Sqft.
1 Bed, 1 Bath
$1,195,000

Sold (41)

Address Sold date Last List Price Represented
Picture of 161 W 16TH Street 5A
161 W 16TH Street 5A New York City, NY
Living Area: Sqft.
02/02/2026 $685,000 Selling
Picture of 94 BANK Street NA
94 BANK Street NA New York City, NY
Living Area: Sqft.
02/02/2026 $5,500,000 Selling
Picture of 64 Macdougal Street 21
64 Macdougal Street 21 New York City, NY
Living Area: 13786 Sqft.
02/02/2026 $659,000 Selling
Picture of 319 Humboldt Street 2-B
319 Humboldt Street 2-B New York City, NY
Living Area: 926 Sqft.
02/02/2026 $925,000 Listing
Picture of 1 S 1st Street 38-A
1 S 1st Street 38-A New York City, NY
Living Area: Sqft.
02/02/2026 $8,500 Selling
Picture of 21 India Street T-2208
21 India Street T-2208 New York City, NY
Living Area: Sqft.
02/02/2026 $3,800 Listing
Picture of 578 Union Street 1-A
578 Union Street 1-A New York City, NY
Living Area: Sqft.
02/02/2026 $4,000 Colisting
Picture of 444 E 86TH Street 33C
444 E 86TH Street 33C New York City, NY
Living Area: Sqft.
02/02/2026 $700,000 Selling
Picture of 1 N 4th Place 12-J
1 N 4th Place 12-J New York City, NY
Living Area: Sqft.
02/02/2026 $4,789 Selling
Picture of 420 Kent Avenue 1206
420 Kent Avenue 1206 New York City, NY
Living Area: Sqft.
02/02/2026 $3,185 Colisting
Picture of 230 Bushwick Avenue 2C
230 Bushwick Avenue 2C New York City, NY
Living Area: Sqft.
02/02/2026 $3,400 Colisting
Picture of 40 MARCY Avenue 2-R
40 MARCY Avenue 2-R New York City, NY
Living Area: Sqft.
02/02/2026 $3,285 Colisting
Picture of 300 Ashland Place 35J
300 Ashland Place 35J New York City, NY
Living Area: Sqft.
02/02/2026 $4,895 Colisting
Picture of 10 Montieth Street 326
10 Montieth Street 326 New York City, NY
Living Area: Sqft.
02/02/2026 $4,800 Colisting
Picture of 275 PARK Avenue 7A
275 PARK Avenue 7A New York City, NY
Living Area: Sqft.
02/02/2026 $3,333 Colisting
Picture of 275 PARK Avenue 5X
275 PARK Avenue 5X New York City, NY
Living Area: 1460 Sqft.
02/02/2026 $4,125 Colisting
Picture of 1037 Manhattan Avenue 4FR
1037 Manhattan Avenue 4FR New York City, NY
Living Area: Sqft.
02/02/2026 $2,500 Colisting
Picture of 609 Lorimer Street 4
609 Lorimer Street 4 New York City, NY
Living Area: Sqft.
02/02/2026 $2,500 Colisting
Picture of 333 SCHERMERHORN Street PH53J
333 SCHERMERHORN Street PH53J New York City, NY
Living Area: Sqft.
02/02/2026 $4,300 Colisting
Picture of 2 N 6TH Place 28I
2 N 6TH Place 28I New York City, NY
Living Area: Sqft.
02/02/2026 $3,704 Colisting
Picture of 50 N 5TH Street 3-LW
50 N 5TH Street 3-LW New York City, NY
Living Area: Sqft.
02/02/2026 $3,666 Colisting
Picture of 160 W 84th Street 7
160 W 84th Street 7 New York City, NY
Living Area: Sqft.
02/02/2026 $3,900 Colisting
Picture of 32-42 33rd Street D-8
32-42 33rd Street D-8 New York City, NY
Living Area: Sqft.
02/02/2026 $1,850 Colisting
Picture of 419 E 82nd Street 4D
419 E 82nd Street 4D New York City, NY
Living Area: Sqft.
02/02/2026 $2,156 Colisting
Picture of 420 Kent Avenue 349
420 Kent Avenue 349 New York City, NY
Living Area: Sqft.
02/02/2026 $3,150 Colisting
Picture of 40 MARCY Avenue 1-L
40 MARCY Avenue 1-L New York City, NY
Living Area: Sqft.
02/02/2026 $2,495 Colisting
Picture of 4610 CENTER Boulevard 501
4610 CENTER Boulevard 501 New York City, NY
Living Area: Sqft.
02/02/2026 $2,620 Colisting
Picture of 447 Meeker Avenue 4-B
447 Meeker Avenue 4-B New York City, NY
Living Area: Sqft.
02/02/2026 $2,900 Colisting
Picture of 21 India Street t-510
21 India Street t-510 New York City, NY
Living Area: Sqft.
02/02/2026 $3,370 Colisting
Picture of 171 N 10th Street 2-D
171 N 10th Street 2-D New York City, NY
Living Area: Sqft.
02/02/2026 $3,200 Colisting
Picture of 275 PARK Avenue 5-A
275 PARK Avenue 5-A New York City, NY
Living Area: 700 Sqft.
02/02/2026 $3,083 Colisting
Picture of 275 PARK Avenue 4E
275 PARK Avenue 4E New York City, NY
Living Area: 1060 Sqft.
02/02/2026 $3,416 Colisting
Picture of 110 Green Street A504
110 Green Street A504 New York City, NY
Living Area: Sqft.
02/02/2026 $3,205 Colisting
Picture of 110 Green Street B310
110 Green Street B310 New York City, NY
Living Area: Sqft.
02/02/2026 $4,208 Colisting
Picture of 166 Elizabeth Street 1D
166 Elizabeth Street 1D New York City, NY
Living Area: Sqft.
02/02/2026 $2,888 Colisting
Picture of 1037 Manhattan Avenue 1-F
1037 Manhattan Avenue 1-F New York City, NY
Living Area: Sqft.
02/02/2026 $2,795 Colisting
Picture of 145 Kenilworth Place 6-B
145 Kenilworth Place 6-B New York City, NY
Living Area: Sqft.
02/02/2026 $1,800 Colisting
Picture of 10 Montieth Street 704
10 Montieth Street 704 New York City, NY
Living Area: Sqft.
02/02/2026 $2,888 Colisting
Picture of 903 Dekalb Avenue 903-4F
903 Dekalb Avenue 903-4F New York City, NY
Living Area: Sqft.
02/02/2026 $2,250 Colisting
Picture of 1 N 4TH Place 19F
1 N 4TH Place 19F New York City, NY
Living Area: Sqft.
02/02/2026 $3,705 Colisting
Picture of 252 E 7th Street 1-B
252 E 7th Street 1-B New York City, NY
Living Area: Sqft.
02/02/2026 $550,000 Listing

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