Sophia Lofts
234 North 9th Street, at Roebling Street, Williamsburg
Williamsburg, Brooklyn
BBL 3023137501 · BIN 3392438
- Type
- Condominium
- Floors
- 4
- Landmark status
- Not an individual landmark; not in a historic district
- NYC Landmarks Preservation Commission and City Planning records, updated February 2026
Every recorded sale at this building, 2008–2025
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf, 2025
- $1,184
- floor-adjusted, 1 sale
- Listing discount
- 0.0%
- Recorded sales
- 20
- On record
- 2008–2025
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at Sophia Lofts 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.
Sophia Lofts retains the timber beams, brick walls and steel doors of an older Williamsburg industrial building. Its residential conversion produced eleven homes, including substantial lower-level duplexes and smaller upper-floor loft apartments. A restored masonry facade wraps the corner of North 9th and Roebling Streets.
The conversion's DOB application, filed by architect John Conaty, called for residential use, modified exit stairs and a new penthouse. The work was permitted in June 2007 and signed off in October 2008. The first round of condominium closings took place during 2008.
Architecture and unit composition
The retained structural timber gives the interiors a visible ceiling grid. Large areas of exposed brick and the old steel doors carry the building's industrial character into the apartments. The conversion added contemporary kitchens, bathrooms and mechanical equipment within that shell.
The inventory spans roughly eight-hundred-square-foot single-level apartments and larger duplex homes. Several lower residences exceed twelve hundred square feet, with some approaching fifteen hundred. Private terraces or roof space belong to certain homes; outdoor areas are not uniform across the building.
The corner position allows different window orientations within a small property. The ground-level and upper-floor homes also differ in their relationship to the street. In-unit laundry and central air appear in the residential layouts, while stair access remains part of the building's walk-up configuration.
Building operations
The J-51 benefit reached the end of its fourteen-year term and last appeared on the 2025 tax roll. Ownership now carries the post-expiration tax position; historical monthly expenses from the abatement years do not describe the current carrying cost.
The eleven homes have separate condominium ownership. No single owner holds more than one residential unit in the current DOF roll. The building occupies mixed manufacturing and residential zoning in the Northside's special mixed-use district.
Local Law 97
This building is below the 25,000 sq ft threshold at which LL97 limits apply to a building on its own. It is still covered if it shares a tax lot or condominium board with buildings totaling over 50,000 sq ft; confirm on DOB’s covered-buildings list.
See full Local Law 97 analysis →Recent sales
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 |
|---|---|---|---|---|---|
| May 27, 2025 | 3D | 1 BR · 1 BA · 789 sf | $933,794 | $1,184/sf | — |
| May 9, 2023 | 3D | 1 BR · 1 BA · 789 sf | $1,199,000 | $1,520/sf | +0.0% |
| Jan 11, 2022 | 3D | 1 BR · 1 BA · 789 sf | $970,000 | $1,229/sf | -22.4% |
| Jun 26, 2018 | 2C | 1 BR · 1 BA · 789 sf | $925,000 | $1,172/sf | +0.0% |
| May 26, 2016 | 1B | 1 BR · 1,257 sf | $1,395,000 | $1,110/sf | +0.0% |
| Aug 28, 2014 | 1D | 1 BR · 1,480 sf | $1,350,000 | $912/sf | -8.8% |
| Nov 16, 2011 | 3D | 1 BR · 789 sf | $605,000 | $767/sf | -4.7% |
| Jul 2, 2009 | 2C | 1 BR · 789 sf | $555,000 | $703/sf | — |
Market read. Most recent trades (2025) cleared a median $1,184/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 0.0% from the last ask.
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 3-02313-7501; 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.
What would your apartment rent for?
Enter your apartment and I'll send you what it would rent for, from comparable closed leases at Sophia Lofts 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.
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Comparable buildings
- 172 North 10th Street — Another industrial conversion condominium, enlarged during its later residential redevelopment.
- 256 North 9th Street — A similarly small condominium inventory in a newer ground-up building.
- 211 North 5th Street — A small early-2000s condominium with elevator access and private outdoor configurations.
- The Decora — A modestly scaled Gene Kaufman condominium for comparing purpose-built layouts.
- Two12 Williamsburg — A larger nearby condominium with an enclosed garage and a newer construction history.
More Williamsburg buildings
- Roebling View North, 15 Roebling Street — 2008 condominium
- Schaefer Landing North (440 Kent Avenue) — 2006 condominium
- Sevenberry (120 North 7th Street) — 2007 condominium by Karl Fischer Architects
- South Third Lofts, 351 South 3rd Street — 2006 condominium
- The Devoe, 131 Devoe Street — 2019
- The Edge, 22 North 6th Street — new-construction condominium
The neighborhood
For the full neighborhood — its buildings, character, and market — read The Roebling Team Guide to Williamsburg.
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.
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646.939.7375 · c.cohen@compass.com