--- title: "12399 FLATLANDS Avenue Condos for Sale in Brooklyn | Buyer Savings" description: "View active listings, prices, and amenities at 12399 FLATLANDS Avenue, located at 12399 FLATLANDS Avenue, Brooklyn, NY 11207 in Brooklyn. Buy a condo with Buyer Advantage savings." url: "https://realestaterebatesnewyork.com/buildings/new-york-city/brooklyn/12399-flatlands-avenue" source: "Real Estate Rebate Team" dateModified: "2026-08-25T08:47:32.923Z" --- # 12399 FLATLANDS Avenue 12399 FLATLANDS Avenue, Brooklyn, NY 11207 New Lots · Condominium · Built 1990 Availability last updated: August 25, 2026, 4:47 AM ## At a Glance - **Active Units**: 1 Unit - **Starting Price**: $385,000 - **Property Type**: Condominium - **Year Built**: 1990 ## Building Overview 12399 Flatlands Avenue is a residential property in the East New York area of Brooklyn. This part of Brooklyn is primarily residential and provides access to local transport and the Belt Parkway. ## Illustrative Buyer Savings **$5,775 at Closing** Illustrative, based on a 3% buyer-broker commission on the highest-priced available residence. Régis shares 50% of the buyer-side commission actually received, so your figure follows the commission offered on your transaction. Work with Régis before touring or submitting an offer to understand the building, evaluate pricing, and preserve eligible Buyer Advantage opportunities. **Régis Roumila** — Principal Broker · NY & NJ. Private buyer representation for luxury resale and new development purchases. Verified Member: REBNY · NAR. NYDOS LIC#: 10491211335. [Speak with Régis](mailto:info@real-estate-rebate.com?subject=Inquiry%3A%2012399%20FLATLANDS%20Avenue) · [Estimate your Buyer Commission Share](https://realestaterebatesnewyork.com/calculators/buyer-closing-cost-calculator) ## Key Building Details - **Year Built**: 1990 - **Stories / Floors**: 9 - **Neighborhood**: New Lots - **Active Listings**: 1 unit ## Building Amenities - Natural Gas - Steam - Common Area - Laundry Room - On Site - Outside - Building Playground - Building Courtyard - Building Garden - Balcony - Building Balcony - Garden - Playground - Private Outdoor Space Under 60 Sqft - Breakfast Bar - Eat-in Kitchen - Elevator - Galley Kitchen - Granite Counters - High Ceilings - Kitchen Window - Open Floorplan - Soaking Tub - Park/Greenbelt - Neighborhood - Trees/Woods - Pets: Building Cats OK - Pets: Building Dogs OK - Pets: Cats OK - Pets: Dogs OK ## Active Residence at 12399 FLATLANDS Avenue 1 Active Residence Buyer Advantage figures shown on these residences are illustrative, based on a 3% buyer-broker commission. Régis shares 50% of the buyer-side commission actually received on the transaction, so the figure follows the commission offered on the listing you buy. [How the Buyer Commission Share works](https://realestaterebatesnewyork.com/buyer-advantage) | Residence | Type | Beds | Baths | Size | Price | Status | Estimated Buyer Advantage | Courtesy of | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | [12399 FLATLANDS Avenue #9E](https://realestaterebatesnewyork.com/buy/newyorkcity/brooklyn/11208/12399-flatlands-avenue-9e-ny-11208) | Condominium | 2 | 1 | 966 ft² | $385,000 | Active | $5,775* | Keller Williams NYC | > 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. ## Sales History for 12399 FLATLANDS Avenue 69 closings in this building. Prices are the consideration recorded on the deed with the City of New York wherever it has been filed. | Unit # | Beds | Baths | Size | Closing Price | Price / Ft² | Asking Price | Sold On | | --- | --- | --- | --- | --- | --- | --- | --- | | 7C | — | — | 898 | $375,000 — Public record | $418 | — | Apr 7, 2026 | | 6L | 2 | 1 | 808 | $369,000 (-7.5%) | $457 | $399,000 | Aug 14, 2025 | | 13 6L | — | — | 770 | $369,000 — Public record | $479 | — | Aug 12, 2025 | | 8F | — | — | 622 | $325,000 — Public record | $523 | — | Jul 31, 2025 | | 4F | — | — | 622 | $100,000 — Public record | $161 | — | Apr 9, 2025 | | 13 3J | — | — | 896 | $404,700 — Public record | $452 | — | Sep 17, 2024 | | 13 5B | — | — | 643 | $302,000 — Public record | $470 | — | Oct 6, 2022 | | 13 2E | 2 | 1 | 885 | $370,000 | $418 | $370,000 | Aug 3, 2022 | | 2E | — | — | 864 | $370,000 — Public record | $428 | — | Aug 2, 2022 | Showing the 9 most recent of 69 closings. The full record is on the building page. Public record marks a price taken from the deed filed with the City of New York. Rows without it show the price reported to the listing service, which is what is available until the deed is recorded, typically about two weeks after closing. The percentage beside a closing price is the sale measured against the original asking price. Rows with no asking price are sales with no listing behind them. Those are sponsor and off-market transfers taken from the public record. > 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. ## What to Review Before Buying in 12399 FLATLANDS Avenue Purchasing real estate in New York City or New Jersey goes beyond the apartment itself. To secure your asset and investment equity, we systematically analyze building structures, financials, board packages, and commission sharing arrangements. 1. **Building Quality** — Review construction, finishes, amenities, management, service level, and long-term resale value. 2. **Monthly Costs** — Understand common charges, property taxes, assessments, and the full carrying-cost picture. 3. **Transaction Strategy** — Evaluate pricing, sponsor terms, closing costs, negotiation leverage, and eligible Buyer Advantage opportunities before committing. ## Location & Neighborhood 12399 FLATLANDS Avenue, Brooklyn, NY 11207 ### New Lots No descriptive context available for New Lots currently. - [New Lots Guide](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/brooklyn/new-lots) - [Browse New Lots Residences](https://realestaterebatesnewyork.com/buy/newyorkcity/brooklyn/new-lots-brooklyn) - [All Neighborhoods](https://realestaterebatesnewyork.com/neighborhoods) ## Frequently Asked Questions ### Where is Flatlands Avenue? It is in southeastern Brooklyn. Have questions about 12399 FLATLANDS Avenue? [Speak with Régis before you tour.](mailto:info@real-estate-rebate.com) ## Considering a Residence at 12399 FLATLANDS Avenue? Speak with Régis before you tour, negotiate, or submit an offer. Receive private buyer-side guidance, pricing context, and eligible Buyer Advantage opportunities where available. [Schedule a private consultation](https://realestaterebatesnewyork.com/contact) · [All buildings](https://realestaterebatesnewyork.com/buildings)