684 DEAN Street #3, New York City, NY 11238
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Regis Roumila
Verified Member: REBNY · NAR
NYDOS LIC#: 10491211335
Property Overview
Situated in a newly constructed boutique building just off vibrant Vanderbilt Avenue, this impeccably crafted 2-bedroom, 2-bath residence blends modern luxury with thoughtful design. A keyed elevator opens directly into the home, providing a private and secure entry. Highlights include lean architectural lines, wide-plank hardwood floors, and oversized windows which bathe the space in natural light.
The open-concept living and dining area flows effortlessly into a sleek contemporary kitchen outfitted with premium appliances and custom cabinetry. A private balcony offers the perfect r...
Property Details
Residence Features
Sales Evidence
Recent closed sales
3 apartments at 684 DEAN Street have recorded sales since September 2021, the most recent for $2,990,000 in December 2025. Prices are the figures recorded with the City, not asking prices.
| 1Apartment | 3 | 1,796 | $2,990,000 | $1,665/ft² | December 30, 2025City record · MLS |
|---|---|---|---|---|---|
| 5Apartment | Bedroom count not recorded | 1,712 | $2,999,999 | $1,752/ft² | December 29, 2025City record |
| 4Apartment | Bedroom count not recorded | 1,127 | $1,800,000 | $1,597/ft² | December 2, 2025City record |
Every row is a recorded transaction, including ancillary spaces such as storage and staff rooms where they were sold separately. Those are excluded from the benchmark below.
How this price compares
The median closed price for comparable condo two-bedroom sales in Prospect Heights is $1,773,750, based on 20 sales between October 2024 and February 2026. This home is asking $1,725,000, $48,750 below that median. The middle half of those sales closed between $1,476,250 and $1,917,500.
- Median closed price
- $1,773,750
- Middle half
- $1,476,250 – $1,917,500
- Based on
- 20 condo two-bedroom sales in Prospect Heights
- Period
- October 2024 – February 2026
- Median $/ft²
- $1,518/ft²
Across the 17 of these sales with a published asking price, the median closed at 97.8% of what it originally asked. 82% of them closed below the original ask.
This building has not had enough comparable sales of its own in the period to support a median, so the benchmark is drawn from Prospect Heights instead.
How these sales were negotiated
- Sold vs original ask
- 97.8% of the original ask
- Closed below ask
- 82% of 17 sales
- Listed → in contract
- 81 days (about 12 weeks)
- In contract → closed
- 70 days (about 10 weeks)
Across the 17 of these sales with a published asking price, the median closed at 97.8% of what it originally asked. 82% of them closed below the original ask.
Half of these homes were in contract within 81 days (about 12 weeks) of coming to market, based on the 17 with a recorded listing date.
Once a deal was agreed, closing took a further 70 days (about 10 weeks), based on the 17 with both dates recorded.
These are two separate periods measured on different clocks — time to find a buyer, and time from agreed deal to closing. They are medians of different sets of sales and do not add together into a single "days on market" figure.
Based on 20 condo two-bedroom sales in Prospect Heights, October 2024 – February 2026. Each figure counts only the sales that recorded the dates it needs, which is why the denominators differ.
Price trend
Median sold price for condo and house two-bedroom sales in Prospect Heights, 2017 to 2025. The series is held to one bedroom count and one ownership type for the same reason: an unfiltered median tracks which apartments sold, not what they were worth.
| Year | Median sold price | Sales |
|---|---|---|
| 2017 | $1,516,174 | 21 |
| 2018 | $1,577,500 | 41 |
| 2019 | $1,708,912 | 29 |
| 2020 | $1,502,350 | 12 |
| 2021 | $1,605,000 | 23 |
| 2022 | $1,660,000 | 21 |
| 2023 | $1,710,000 | 14 |
| 2025 | $1,743,750 | 16 |
This building does not have enough sales with a recorded floor area to chart its own price per square foot, which is usual for a co-op. The series above follows comparable homes across Prospect Heights instead.
Sale prices are the consideration recorded with the City in ACRIS, and each sale is dated by the day the City recorded it. A closing date reported to the MLS typically falls one to two weeks earlier. Recorded sales describe what has already happened and are not an appraisal, a valuation, or an estimate of what this home will sell for.
Price and Property History for 684 DEAN Street, Unit 3
Review the recorded listing activity for 684 DEAN Street, Unit 3, including asking-price changes and prior market dates.
- Entered contract
- August 27, 2026
| Date | Price | Listing event |
|---|---|---|
| $1,725,000 | Entered contract | |
| $1,725,000 | Returned to the market | |
| $1,725,000 | Listed for sale by Douglas Elliman Real Estate |
Property Tax History
Taxes at 684 DEAN Street #3 were $15,822 in 2026.
| Year | Tax Assessment | Land | Additions | Billable Value | Property Tax | Tax Rate |
|---|---|---|---|---|---|---|
| 2026FY 2026/27 | $129,336 | $13,838 | $115,498 | $126,575 | $15,822 | 12.5%Estimated |
The City has not published the official FY2026/27 tax rate yet. We calculated the tax for that year using the prior year’s rate, so treat it as an estimate rather than a figure the City has adopted. Every rate without the Estimated marker is the published one.
Tax Assessment is the assessed value on the City’s roll, and it is the figure other listing sites publish. It is not what the bill is calculated on. New York phases assessment changes in gradually for some tax classes, so the City bills the Billable Value shown beside it, less any exemption the owner holds. It usually trails the assessment, and it can sit above it for a few years after an assessment falls.
Figures are the New York City Department of Finance assessment roll for tax lot 3011381203. Assessed and billable values are determined by the City for tax purposes and are not an appraisal or an estimate of market value. Tax classes and rates are set annually and can change.
About The Building
684 DEAN Street
684 DEAN Street, Brooklyn, NY 11238
A building in Prospect Heights, currently featuring 3 active listings.
Interested in 684 DEAN Street?
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Estimated Monthly Payment
Estimates only. Actual payments may vary. Confirm terms with your lender.
This is a new development purchase
Buying from a sponsor carries closing costs a resale does not. The New York City and New York State transfer taxes are the seller’s in a resale and are passed to the purchaser in most offering plans, and the sponsor’s attorney fee and any working capital contribution sit on top of that. Together they commonly add 2% or more of the purchase price.
Neighborhood Context
Nearby Schools
* Distances are approximate line-of-sight metrics.
Location Context
Prospect Heights
Overview of Prospect Heights
Prospect Heights is the cool, cultural cousin of Park Slope. Smaller, diverse, and anchored by Brooklyn's biggest cultural heavyweights (The Museum, The Library, The Garden), it has rapidly become a top destination. For buyers seeking Prospect Heights Brooklyn real estate, it offers brownstone charm with a slightly more relaxed, younger energy. Living in Prospect Heights is convenient. Vanderbilt Avenue has become a premier dining street (often closed to cars for "Open Streets"). As a central Brooklyn NYC neighborhood, it is steps from everything that matters in the borough.Real Estate & Housing Market
The market for homes for sale in Prospect Heights is a mix of stunning brownstones and pre-war co-ops. The blocks are generally quieter and sometimes wider than Park Slope. New luxury condos, particularly the massive Pacific Park development (near Barclays), are adding modern inventory to the historic stock.Lifestyle & Community
The lifestyle in Prospect Heights is culturally rich. You can spend a Saturday at the Brooklyn Museum, walk through the Botanic Garden, and have dinner at Olmsted. It feels intelligent and fun. The community is a blend of long-time Caribbean residents and newer professionals. It has a strong, welcoming identity.Transportation & Accessibility
Prospect Heights is excellent for transit. You have the 2/3 at Grand Army Plaza, the B/Q at 7th Ave, and the C nearby. Atlantic Terminal is a short walk. It is centrally located, making it easy to get to both Manhattan and the beaches.Parks, Schools & Amenities
Prospect Park and Grand Army Plaza form the neighborhood's southern border. The Saturdays Farmer's Market at Grand Army Plaza is one of the best in the city. Amenities are world-class: The Brooklyn Museum, Brooklyn Botanic Garden, and Brooklyn Public Library (Central Branch) are all right here.Who This Neighborhood Is Best For
Prospect Heights is best for culture vultures, foodies, and buyers who want the Park Slope perks but prefer a slightly smaller, more low-key neighborhood.
RLS IDX Data display by Real Estate Rebate Team. This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2026 The Real Estate Board of New York, Inc., All rights reserved. IDX information is provided exclusively for consumers’ personal, non-commercial use and it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer and the number of bedrooms listed is for informational purposes and is not a legal conclusion. Please consult with your own architect or engineer for exact dimensions and legal specifications.