378 Baltic Street
378 Baltic Street, Brooklyn, NY 11201
Boerum Hill, Brooklyn
BBL 3004037508 · BIN 3392287
- Year built
- 2007
- Type
- Condominium
- Units
- 36
- Floors
- 11
- Landmark status
- Not an individual landmark; not in a historic district
- NYC Landmarks Preservation Commission and City Planning records, updated February 2026
- Doorman
- Full-time doorman
Every recorded sale at this building, 2009–2026
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf, 2026 to date
- $1,350
- floor-adjusted, 1 sale
- Listing discount
- 4.9%
- Recorded sales
- 62
- On record
- 2009–2026
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 378 Baltic Street would likely sell for today, what it costs to sell, and what you’d walk away with — reviewed personally against condition, exposures, renovation quality, and the competition actually on the market.
At 11 stories, 378 Baltic Street is well above the row houses around it between Smith and Hoyt Streets. It was filed in 2003, when this lot was zoned R6, which allowed a taller building on a lot this size. The lot has since been mapped R6B, a contextual district with a much lower height limit, so a building of this height could not be filed here today. The upper floors look out over a low neighborhood, and those views are the building's main selling point.
The sponsor closed its first sale in February 2009, in the middle of the financial crisis, and still sold all 36 apartments to individual buyers within twelve months. The last sponsor apartment deed was recorded in February 2010. That original transfer sequence does not establish later beneficial ownership or the absence of retained sponsor rights. Obtain current ownership, unsold-unit and board-control disclosures before ruling out a sponsor or investor concentration.
The apartments are small. Every residence is between about 610 and 830 square feet, four to a floor. The building is also a mixed-use condominium: commercial space, a community facility and a 25-car garage share the base, under one outside owner. That structure affects how common charges are split and how the condominium is governed, so buyers should understand it before making an offer.
Architecture and unit composition
The building rises 11 stories on an 80-foot frontage. The residential floors begin on the third floor, above a two-story base with the commercial and community-facility units. In 2013 the condominium filed for landscaping on the third-floor roof, the top of the base. Whether that roof is common space or belongs to specific apartments should be confirmed from the declaration.
Floors 3 through 11 each carry four lines. The C line, at about 830 square feet, and the D line, at about 750, are the larger apartments. The A and B lines, at about 610 square feet, are the smaller ones. A buyer who wants more room has little choice in this building beyond the C line on a higher floor.
The garage is a separate condominium unit with room for 25 cars. It belongs to the same outside owner as the commercial and community-facility units, not to the residential owners. Whether residents can rent spaces, and on what terms, is a question for the managing agent.
Building operations
Capital work. In 2020 the Department of Buildings issued a permit for exterior waterproofing, parapet and sealant repairs, and interior fire-proofing and fire-rated construction repairs. It is the largest job in the building's post-construction record. Ask whether the work is complete, how it was paid for, and whether an assessment is still being collected. Also ask for the current Local Law 11 façade filing.
Governance. An amended declaration was recorded in March 2021. Get a copy and find out what it changed. The mix of residential and non-residential units makes the declaration's allocation of common charges and votes more important than usual.
Tax position. The 421-a benefit has run out, and the assessment roll shows no remaining exemption on the residences; check each apartment's tax bill for any other benefit. Condominium common charges do not include the apartments' real estate taxes, so take each from its own source: the current tax bill for the specific apartment, and the current budget for common charges and any assessment. A listing tax figure from before the 2024/25 roll may reflect the 421-a.
Building staffing and amenities
- Doorman
- Full-time doormanSource: recent listing records
- Elevator
- YesSource: NYC Department of Buildings elevator records
Staffing and amenities as our building profile and recent listing records describe them. A feature not listed is not confirmed absent. Outdoor space, parking and some facilities can belong to particular apartments or to a separate owner; confirm access for the specific apartment.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $4,493/yr
- Per unit / month range
- $0 – $10
- Modeled exposure split equally across 36 units (the residential count on the city's lot record). Not an assessed amount; condominium owners are typically charged by each unit's common-interest percentage.
Source: NYC LL84 benchmarking and PLUTO · The Roebling Research Library. City data last refreshed October 2026.
See full Local Law 97 analysis — emissions history, scenarios, methodology →Facade safety — Local Law 11
The latest available filing classified the facade as SWARMP — Safe With A Repair and Maintenance Program: the inspector (QEWI) identified conditions requiring monitoring or repair, with repairs due by the deadline stated in the filing. The scope, timeline, and how the building funds the work are building-specific — we review the filings and board materials for you.
How to read this, and where it comes from
QEWI = Qualified Exterior Wall Inspector — a licensed professional engineer or registered architect who meets DOB’s FISP qualifications and signs the report (the independent expert, not the managing agent).
Source: NYC DOB facade filings (FISP) · The Roebling Research Library. City data last refreshed October 2026.
Recent sales
378 Baltic Street trades in the Boerum Hill and Carroll Gardens condominium resale market, priced per square foot. Because the apartments are small, the building competes mostly in the studio and one-bedroom condominium market. Higher floors and the C line bring premiums. Resale has been steady since the 2009–10 sellout, and two sales have closed in the last 24 months. Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.
Recent closings at this building, from The Roebling Research Library. Prices are the transfer amounts recorded with the NYC Department of Finance; apartment-level detail is checked against the building’s own file in The Roebling Research Library before publishing.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Jan 6, 2026 | 9C | 2 BR · 2 BA · 831 sf | $1,095,000 | $1,318/sf | -4.8% |
| Sep 26, 2024 | 5B | 1 BR · 1 BA · 608 sf | $790,000 | $1,299/sf | — |
| May 9, 2022 | 5C | 2 BR · 2 BA · 831 sf | $1,025,000 | $1,233/sf | +0.0% |
| Jan 31, 2022 | 5A | 1 BR · 1 BA · 609 sf | $715,000 | $1,174/sf | +2.4% |
| Sep 28, 2021 | 4B | 1 BR · 1 BA · 608 sf | $715,000 | $1,176/sf | +2.4% |
| May 11, 2021 | 3A | 1 BR · 1 BA · 609 sf | $708,000 | $1,163/sf | +1.3% |
| Nov 30, 2020 | 4C | 2 BR · 2 BA · 831 sf | $939,000 | $1,130/sf | -1.1% |
| Sep 2, 2020 | 10B | 1 BR · 1 BA · 609 sf | $680,000 | $1,117/sf | +0.0% |
Market read. Most recent trades (2026 to date) cleared a median $1,350/sf (floor-adjusted) across 1 sale. Floor-adjusted means each sale is restated to a constant mix of floors, so the figure can differ from the plain median of the sales listed above. Median listing discount 4.9% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.
The retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
Full closing history with price-per-square-foot over time, the complete retrade record, and every line that has traded.
Sales sourced from NYC Department of Finance recorded transfers (BBL 3-00403-7508; each condominium apartment is its own tax lot). Apartment-level facts (line, condition, asking-price context) curated and cross-verified in The Roebling Research Library. Not all transactions cross-verify with ACRIS records — sponsor and LLC purchases sometimes record at stipulated values rather than market price; square footage from recorded condo declarations and offering plans.
Closed rents at 378 Baltic Street, last 36 months
| Size | Leases | Median / month |
|---|---|---|
| 1 bedroom | 6 | $4,200 |
| 2 bedroom | 2 | $5,400 |
8 closed leases, October 2023 to September 2026. Most recent lease June 2026. Sizes with fewer than 2 leases are not shown. Compiled by The Roebling Team at Compass from closed leases.
What would your apartment rent for?
The figures above are the building's closed leases. Enter your apartment and I'll send you what yours would rent for, from comparable leases at 378 Baltic Street and nearby.
Buying here? Condo closing costs with a mortgage typically run 3 to 6% of the price. See NYC co-op and condo closing costs, line by line.
Keep up with 378 Baltic Street and its market
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What to know if you’re buying
The tax abatement is gone. The 15-year 421-a benefit ended with the 2024/25 roll. Check the seller's current tax bill, not an old listing or budget.
Understand the base. The commercial unit, the community-facility unit and the garage are held together, separately from the apartments. Read the declaration and the 2021 amendment to see how common charges and votes are divided.
Ask about the façade work. The 2020 waterproofing and parapet permit is the main capital item on record. Find out its status and whether any assessment is still open.
Parking is not included. The garage is a separately owned unit. Don't assume a space comes with the apartment.
What to know if you’re selling
Lead with the height. Upper-floor apartments in an 11-story building among row houses have open views that few condominiums nearby can offer. Photograph them and price the floor premium on that basis.
Have the paperwork ready. Buyers will ask about the tax position, the base owner and the façade work. Answering early keeps the deal on schedule.
Comparable buildings
If you're considering 378 Baltic Street, also evaluate:
- 610 Warren Street: a 2017 condominium on the Boerum Hill and Gowanus edge that still has an active 421-a schedule
- The Atlantic, 457 Atlantic Avenue: an eight-story Boerum Hill condominium above ground-floor retail
- 71 Smith Street (The Boerum): a larger Boerum Hill condominium tower on Smith Street
- Boerum Heights, 556 State Street: a 2006 Boerum Hill condominium of the same generation, with deeded parking
- 344 Degraw Street: a Carroll Gardens condominium with a significant façade file
- 345 Carroll Street: a Carroll Gardens condominium with parking and storage units
- 675 Sackett Street: a 2004 Park Slope condominium whose 421-a benefit is phasing out
- 145 Park Place: a 2005–06 condominium with no remaining abatement
More Boerum Hill buildings
- 354 Baltic Street — co-op
- 356 Baltic Street — 2017 condominium
- 365–367 Atlantic Avenue, 365 and 367 Atlantic Avenue — 1875 condominium
- 395 Atlantic Avenue, 395 Atlantic Avenue · Boerum Hill — condominium
- 402 Pacific Street — 1851 condominium
- 413 State Street — 1900 co-op
The neighborhood
For the full neighborhood — its buildings, character, and market — read The Roebling Team Guide to Boerum Hill.
How to read the facts on this page. Items attributed to an offering plan describe the building as it was offered at that filing — unit mix, square footage, the amenity program as planned. They are not a statement about how the building operates today. Tax and compliance figures are sourced separately to current City records and carry their own dates. House rules, staffing and fee policy can change by board resolution without any public filing: treat every policy line here as a starting point for diligence and confirm it with the managing agent. Where this page compares one building or neighborhood to another, that is our analysis of the recorded record — it names the measure, the period and the sample it rests on, and it is an observation about medians rather than a prediction about any particular apartment.
Considering a move at 378 Baltic Street?
Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.
646.939.7375 · c.cohen@compass.com