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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 (14)

Active Rental Sold

For Sale (2)

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
Picture of 110 E 87th Street 2-A
110 E 87th Street 2-A New York City, NY
Living Area: 898 Sqft.
1 Bed, 2 Baths
$1,325,000

Sold (12)

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.
06/04/2026 $685,000 Selling
Picture of 94 BANK Street NA
94 BANK Street NA New York City, NY
Living Area: Sqft.
06/04/2026 $5,500,000 Selling
Picture of 630 W END Avenue 4
630 W END Avenue 4 New York City, NY
Living Area: Sqft.
06/04/2026 $1,150,000 Selling
Picture of 64 Macdougal Street 21
64 Macdougal Street 21 New York City, NY
Living Area: 13786 Sqft.
06/04/2026 $659,000 Selling
Picture of 319 Humboldt Street 2-B
319 Humboldt Street 2-B New York City, NY
Living Area: 926 Sqft.
06/04/2026 $925,000 Listing
Picture of 1 S 1st Street 38-A
1 S 1st Street 38-A New York City, NY
Living Area: Sqft.
06/04/2026 $8,500 Selling
Picture of 21 India Street T-2208
21 India Street T-2208 New York City, NY
Living Area: Sqft.
06/04/2026 $3,800 Listing
Picture of 578 Union Street 1-A
578 Union Street 1-A New York City, NY
Living Area: Sqft.
06/04/2026 $4,000 Colisting
Picture of 347 W 22ND Street 8
347 W 22ND Street 8 New York City, NY
Living Area: 1400 Sqft.
06/04/2026 $2,360,000 Selling
Picture of 444 E 86TH Street 33C
444 E 86TH Street 33C New York City, NY
Living Area: Sqft.
06/04/2026 $700,000 Selling
Picture of 1 N 4th Place 12-J
1 N 4th Place 12-J New York City, NY
Living Area: Sqft.
06/04/2026 $4,789 Selling
Picture of 145 Kenilworth Place 6-B
145 Kenilworth Place 6-B New York City, NY
Living Area: Sqft.
06/04/2026 $1,800 Colisting

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