Harriet Kaufman
Real Estate Professional
Licensed Assoc. Real Estate Broker
As a long-time Manhattan resident, both living and working in the real estate industry here for more than 30 years, Harriet has an extensive list of successful deals from Greenwich Village to Tribeca, and from the Upper East and West Sides. Her hundreds of buyers and sellers are secure to know they have a broker who thoroughly understands the current market, and upon whom they can rely for honest and sound advice.

Harriet was given Warburg’s prestigious Top Producing Broker recognition in 2009, and has consistently ranked amongst the firm’s Top 10 performers. A fierce negotiator with a hallmark combination of determination, diligence and professionalism, Harriet works tirelessly to see each transaction through to a successful outcome.

Despite financial market woes, Harriet successfully closed on the largest sale south of Columbus Circle in 2008 for a $30 million glass penthouse at 145 Hudson Street. The property was the first of its kind to be built and sold in the Tribeca neighborhood. She is also responsible for sales in many of the City’s finest buildings including The San Remo, The Beresford, 778 Park Avenue, 45 Gramercy Park North, Stella Tower, the iconic Walker Tower, and recently in Harlem at 1890 Adam Clayton Powell Blvd.

Harriet has worked closely with her associate, Nealy Erber, for over 15 years. As a team of two, they provide availability, accessibility, and the management support their clients need throughout the transaction process.

Harriet takes great pride in all of her transactions, no deal is too big or too small. A true testament to Harriet’s success and business ethic are the countless referrals and repeat customers she is so fortunate to work with. She has also had the wonderful opportunity to help generations of families find their new homes.

Growing up in Utica, New York, Harriet always dreamt of living in New York City. Having worked and lived in Manhattan for over 30 years with her husband where they also raised their daughter, who currently lives in Tribeca. Harriet considers herself very lucky to have a job that she loves and one that allows her to assist others in finding their own dream home in New York.


Lux Exposé
90 Morton Street, APT PH-9B, is a $19,150,000 home that has recently hit the market with broker Maria E. Daou of Coldwell Banker Warburg. This three-bedroom, three-and-a-half-bathroom West Village penthouse features an expansive living area with… More
Lux Exposé
A beautiful home in the sky in a full-service top-of-the-line condominium Evans Tower has hit the market. Listed for $6,100,000 by broker Harriet Kaufman of Coldwell Banker Warburg, this massive residence offers 3,450 square feet of living space across nine… More
Lux Exposé
1 East 66th Street, Apartment 11F by Harriet Kaufman featured These $2.495 Million NYC Homes Offer White-Glove Living
Modern Luxury Manhattan
1 East 66th Street, Apartment 11F by Harriet Kaufman featured https://mlmanhattan.com/upper-east-side-dream-home-sale
1095 Park Avenue, Apt. 16D by Harriet Kaufman featured A terrace and high-floor views make this $4.6M pre-war classic six the perfect Park Avenue pad  
Cottages & Gardens
1095 Park Avenue, Apt 16D by Harriet Kaufman featured A Light-Filled and Classic Carnegie Hill Co-Op Wants $4.6M
Lux Exposé
1095 Park Avenue, Apt 16D by Harriet Kaufman featured https://luxexpose.com/1095-parkavenue-residence-comes-with-a-backyard-in-the-sky/
City Realty
1088 Park Avenue 14B by Harriet Kaufman featured. https://www.cityrealty.com/nyc/market-insight/features/great-listings/what-classic-six-see-20-beautiful-examples-market-right/20582
Forbes Global Properties
Featured Properties: 1435 Lexington Avenue, 8D by Harriet Kaufman 255 West 84th Street, 2AE by Allison Chiaramonte and Tania Isacoff Friedland 137 East 66th Street, 2A by Judy Thorn and Joy Grossman 740 Park Avenue,  8/9A… More
Lux Exposé
1088 Park Avenue, Apt 14B by Harriet Kaufman featured. https://luxexpose.com/this-premier-park-avenue-classic-six-apartment-cant-be-missed/
Forbes Global Properties
Featured Properties: 353 Central Park West, Apt 9 by Alan Levy 1 West 67th Street, 914 by Allison Chiaramonte and Tania Isacoff Friedland 1160 Park Avenue, Apt 14B by Ellen Sykes and Becki Danchik 156 East… More
Wall Street Journal
Brick Underground
Harriet Kaufman and Parisa Afkhami comment. https://www.brickunderground.com/sell/selling-staging-outdoor-space-backyard-roof-balcony-patio-furniture-plants-lighting-nyc
Forbes (Forbes Global Properties)
1 East End Avenue, Maisonette 1C by Harriet Kaufman featured. https://www.forbes.com/sites/forbes-global-properties/2021/01/22/grand-yorkville-apartment-offers-front-row-seat-to-the-east-river/?sh=4cba4cd83b6d
Lux Exposé
1 East End Avenue Apartment Maisonette 1C by Harriet Kaufman featured. https://luxexpose.com/this-2-5m-grand-yorkville-unit-a-must-see-lux-expose/
Forbes (Forbes Global Properties)
795 Fifth Avenue, 812 by Harriet Kaufman featured. https://www.forbes.com/sites/forbes-global-properties/2021/01/13/five-star-living-apartment-at-the-pierre-in-manhattan-hits-the-market/?sh=77c36ac84c05
795 Fifth Avenue, 812 by Harriet Kaufman featured. https://www.offthemrkt.com/blogs/nows-your-chance-to-live-at-the-pierre-hotel
Lux Exposé
262 Central Park West Apt. 9B by Harriet Kaufman featured. https://luxexpose.com/7-room-apartment-on-central-park-west-is-listed-for-3-9m/
35 East 85th Street, 12DN with Dorothy Schrager and Harriet Kaufman https://www.cityrealty.com/nyc/market-insight/features/great-listings/statements-style-gorgeous-listings-moments-park-include-carriage-house-owned-john-d-rockefeller-jr/44082
The New York Times
35 East 85th Street, Apartment 15AN by Dorothy Schrager and Harriet Kaufman featured.
Curbed NY
Harriet Kaufman comments. https://ny.curbed.com/2020/3/10/21173411/coronavirus-new-york-real-estate-home-prices-covid-19
Lux Exposé
115 East 9th Street, Apt. 11R by Rachel Ostow Lustbader & Jeremy Kamm, 35 East 85th Street, Apt. 10B by Harriet Kaufman & Dorothy Schrager, 31 Jane Street, Apt. 9H by Rachel Ostow Lustbader & Jeremy… More
Lux Exposé
16 West 19th Street, Apt. 6E by Harreit Kaufman featured. The Stars Align in a Flatiron Home with Beautiful Details and a Rainbow Brite Bathroom
Brick Underground
Harriet Kaufman and Deborah Ribner comment. https://www.brickunderground.com/improve/renovate-NYC-apartment-Murphy-bed-wall-bed-multi-functional-furniture
975 Park Avenue 9A by Harriet Kaufman mentioned, 960 Fifth Avenue Apt 1C by Claire Groome and Lisa Larson mentioned. https://www.cityrealty.com/nyc/market-insight/features/get-to-know/the-pros-cons-buying-pre-war-post-war-buildings/35201
Harriet Kaufman, Celine Coudert, and Noemi Bitterman comment. https://streeteasy.com/blog/studio-vs-1-bedroom-nyc/?utm_source=StreetEasy+Blog&utm_campaign=1732bf18d6-streeteasy_blog_daily_email&utm_medium=email&utm_term=0_57fe166e04-1732bf18d6-430612397
Alex Lavrenov and Harriet Kaufman comment. https://www.realtor.com/news/celebrity-real-estate/amazon-jeff-bezos-buys-nyc-penthouse-for-80-million/
Harriet Kaufman comments. https://www.brickunderground.com/live/things-real-new-yorkers-look-for-in-new-neighborhood
https://www.inman.com/2019/03/08/how-to-make-your-buyers-a-hit-with-sellers/ Even in a buyer’s market, it’s always important for buyers to present themselves in the best possible light. In New York City, a buyer often needs to put on a good face for both the seller… More
Brick Underground
Claire Groome comments about what to think about when converting a two-bedroom floorplan to a three-bedroom home. The  listing at 1111 Park Avenue, 10C by Harriet Kaufman is also featured. https://www.brickunderground.com/buy/buy-curious-two-bedrooms-into-three-bedrooms
Apartment Therapy
Harriet Kaufman talks about the advantages of living on Central Park and facing East. 101 Central Park West, Apt 5CD by Harriet Kaufman and Frederick Peters is also featured. https://www.apartmenttherapy.com/central-park-new-york-city-cost-of-living-263599
Dorothy Schrager pens a column for Inman, and Harriet Kaufman is cited. https://www.inman.com/2018/10/16/how-to-make-sure-your-clients-never-ever-call-another-agent/
Mansion Global
101 Central Park West 5CD is featured on Mansion Global for its seamless combination, designed by architect John Murray. https://www.mansionglobal.com/articles/a-combo-unit-on-manhattan-s-central-park-west-lists-for-19m-105926
Luxury Listings NYC
Harriet Kaufman’s exclusive listing at 1 East End Avenue was featured as a premier NYC property on the market.
Wall Street Journal
Harriet Kaufman’s beautiful listing at 1 East End Avenue was a Wall Street Journal “House of the Day.” http://www.wsj.com/articles/townhouse-living-on-the-upper-east-side-1452611888 
New York Observer
Harriet Kaufman’s listing at 1 East End Avenue was chosen as one of the most new and noteworthy properties for sale on the Upper East Side. http://observer.com/2015/10/some-of-the-most-new-and-noteworthy-listings-in-the-silk-stocking-district/ 
Harriet Kaufman’s listing at 429 Greenwich Street was included in a round up of weekend open houses in Tribeca. http://ny.curbed.com/archives/2015/05/30/weekend_open_house_tour_tribeca.php
Mann Report Residential
Warburg Realty, one of Manhattan’s leading real estate companies, recently announced its top 10 brokers for 2013.  Longtime Warburg agent Wendy Greenbaum was the leading broker, followed by Richard Steinberg and Jay Glazer. The top ten… More
Press Release
WARBURG REALTY® ANNOUNCES TOP 2013 BROKERS Wendy Greenbaum, Richard Steinberg and Jay Glazer Lead the Firm’s Most Successful Agents Warburg Realty®, one of Manhattan’s leading residential real estate companies, has announced its top 10 brokers for… More
The New York Times
Alex Dietrich, a real estate agent with Nest Seekers International, has recently found himself fielding an unwelcome question from some clients. “They ask, ‘Have you been demoted?’” said Mr. Dietrich, who was a vice president and… More
The New York Times
Frederick Peters and Harriet Kaufman discuss the illegality of titles for real estate brokers. http://www.nytimes.com/2013/08/20/nyregion/real-estate-brokers-lose-some-curb-appeal.html?_r=0 
18 West 74th Street, Unit 3 – $2,495,000 This five-room listing offers turn of the century elegance with modern conveniences. A rare mansion, the unit is in move-in condition and features a chefs’ kitchen with a… More
The Real Deal
From health insurance to technology to office space, TRD looks at the standout benefits and amenities offered by New York City residential brokerages September marks the official end of summer — even if the thermostat says… More
The New York Observer
CB Richard Ellis Vice Chairman Darcy Stacom has set records for her commercial real estate closings, but, according to city records, the winsome blonde and husband Chris Kraus, a managing director at Jones Lang LaSalle, recently… More


Testimonial from Jakki K.

Last summer, I needed to get my mother a place near me in Park Slope, fast! She had a

month-to-month rental in South Slope, twenty blocks from us, which was taxing for her and for me to drop my baby off for child care. I was working with a great agent, but often, I sent him the leads I found on Street Easy.


Then came Joy! Apparently her years of experience in sales take nothing away from her ability in the rental market.


Within days, she sent me listings that were within my budget and only a block or two from me.  She reached out to the listing agents, including one agent who pulled her listing off the market within a few minutes of posting it because hundreds of people applied. Joy helped me prep my paperwork and to negotiate in a way that put me ahead of the pack. By the end of that week, my mother had a place on the same street as me, two blocks down.


I’m reaching out to Joy for my next home in NYC!

Testimonial from RT

Andrea Wernick made the selling of my co-op a smooth and pleasant experience. She knew exactly what to do at every step of the process and gave excellent guidance.  Andrea and her team marketed the apartment well and showed it often leading to an accepted offer and sale.  Andrea was a pleasure to work with and I would recommend her to anyone looking to sell a NYC co-op.

Testimonial from Susan L.

Dear Susan,

The closing, as you know by now, was successfully completed this afternoon. I just wanted to thank you and Michael for all your help and professionalism in making the sale happen. You were straight and clear with me all through the ups and downs – and your guidance was excellent throughout.

I know you understand that for me this has been bittersweet. But “the team of Susans” worked wonderfully and I am really grateful.


Testimonial from Susan Oh

Susan and Michael, Thank you again! This could not have gone so smoothly without you. Both of you are awesome at what you do and thank you for pulling us through this one at the end.


Testimonial from Allan and Jeff Rothman

Annie Cion Gruenberger was absolutely fantastic to work with. She walked us through the entire process from preparing, decluttering, pricing, working with the building, lawyers all the way through to a terrific sale that we were thrilled with. She was always professional but I now truly feel she is a friend. I will recommend her to all my family and friends in the future.

Testimonial from Jonathan S.

Mihal was a great help in finding an apartment rental. I was relocating from out of state. She walked me through the process and lined up multiple virtual showings, all on short notice. Her videos and knowledge were very helpful in finding me a place I was comfortable with. Even after signing the lease she followed up multiple times to make sure all was well.

Testimonial from Alica E.

Mihal did an outstanding job assisting us with purchasing our co-op. While we were searching she checked in frequently and sent us lots of listings. When we found “the one” she helped us negotiate a competitive offer. She was a tremendous help getting through the co-op approval process. She guided us through every step and was always available when we had questions or concerns. She also connected us with a great mortgage banker and I doubt we could’ve landed such a deal without Mihal’s connection. She is very caring and committed. We really felt we were in good hands with the entire process with Mihal’s knowledge and expertise.

Testimonial from Chiti P. and Bill K.

We used the Gottlieb Team to sell our last apartment and buy our current one. Both experiences were smooth, efficient and thorough from start to finish. Particularly when it came time for the negotiating part, they smartly managed the process — maximizing our expectations — and provided a calming presence when we needed it. Their professionalism, punctuality and persistence set them apart in the real estate market. If we move again, they’ll be our first call.

Testimonial from Kristina L.

Mihal did a fantastic job assisting us with the purchase of our apartment. Her expertise in the neighborhoods of the market was essential in determining the purchase pricing along with the future resale value. Mihal was involved from start to finish. She gave great advice, did lots of virtual tours and was extremely patient when it came to our hectic travel schedules.

Testimonial from J&J Moya

Dear Andrea, 
We wish to thank you for all your efforts in making the sale of our studio apartment at Plaza 400 successful–and pleasant. From start to finish, we appreciated your sincerity, experience, patience, artistic touches and sound advice. Your impeccable attention to details and your gracious style set you apart and above others in your profession. We especially noted that you treated the sale of our small apartment with the same care you handled your larger listings. 

We would also like to compliment your associate Donald M. Toresco. He was always a gentleman ready and willing to help. We wish him a long and successful career in Real Estate.

Coldwell Banker Warburg is fortunate to have you and Donald on their staff. Andrea, we were fortunate to have you as our Broker.

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