309 West 118th Street (Brownstone Lane)

Two brick-and-masonry buildings, five floors each, on a steel frame with metal deck and lightweight concrete floors, sharing a landscaped interior courtyard and a cellar-level parking garage. The roof level above the fifth floor carries stair and elevator bulkheads, the boiler chimney and compactor vents; there are no apartments there, notwithstanding the sixth floor PLUTO records.

The unit stack follows a clear logic, and it maps exactly onto the apartment numbering in city records:

• Floors one and two — sixteen triplex units. Recorded in Department of Finance records with a triplex designation, these run from a cellar-adjacent level up through the second floor, with private street entrances plus common-hallway access. The offering plan's floor plans show triplex townhouse layouts approaching 2,900 square feet in the larger lines.
• Floor three — sixteen single-story units. The simplest floor in the building and generally the entry point to it.
• Floors four and five — eight single-story units and eight duplexes. Recorded with a duplex designation; several carry roof terraces at the fifth-floor level, reached through the building's terrace doors.

Twenty-four parking units are separately deeded. Most remain in sponsor-affiliated ownership; a parking unit conveys as its own tax lot and is bought and sold separately from an apartment, which is worth confirming when a listing advertises parking.

The building is self-contained rather than full-service: central laundry in the cellar, a children's playroom, an exercise room, recycling and refuse rooms (one per building), the courtyard, and the garage. There is a superintendent; the offering plan's right-of-access provisions reference the superintendent and managing agent in the usual terms. Electric is individually metered to each residential unit, so heating and cooling costs sit with the unit owner rather than in common charges — one reason common charges here have historically been modest relative to full-service Harlem condominiums.

Mechanically the building is conventional for its vintage: modular gas boilers with an indirect hot water heater serving the whole development from the cellar, kitchen and bath exhaust risers to roof fans, and a make-up air system on the third and fourth floor public halls. Two hydraulic passenger elevators with five stops each. The offering plan documents compliance with the city's handicap-access requirements through elevator cab sizing, the garage-to-hallway access ramp, and adaptable bathroom and kitchen dimensions.

No recent audited financial statements for the condominium are on file with us. The current reserve position, any live assessment, the status of the building's statutory facade cycle, and the terms on which the sponsor-affiliated parking units are operated should all be obtained from the managing agent. Department of Buildings records show a roof membrane replacement filed in 2020 and routine unit-level alteration work through the period; there is no record of major structural remediation.

This is the most important underwriting fact at Brownstone Lane, and it runs against the usual assumption about a 2003 Harlem condominium.

Department of Finance exemption records for the condominium's unit lots show a 421-a partial tax exemption with a 25-year benefit term, a base year of 2003, and benefits commencing in the 2006/07 tax year. The building sits north of 110th Street, outside the geographic exclusion area that limited 421-a benefits in the rest of Manhattan, which is why a 2003 project here qualified for the long-term program rather than a ten-year one.

The exemption is still running at its full level. On the most recent assessment roll, the exempt portion of the condominium's assessed value is approximately 99 percent of the total — the taxable residue is the small pre-construction land base that 421-a leaves in place, on the order of a few hundred dollars of assessed value per apartment. In practical terms, apartments at Brownstone Lane pay a token real estate tax today.

On the standard 25-year schedule, the exemption holds at 100 percent through year 21 and then steps down by 20 percentage points a year across the final four years before expiring. Measured from a 2006/07 commencement, that places the phase-down in the back half of this decade with full taxation arriving in the early 2030s. Confirm the exact year-by-year schedule against the current Department of Finance tax bill for the specific unit — the statutory mechanics are clear but the year alignment on a benefit that commenced nearly twenty years ago should be read off the bill, not inferred.

The consequence for buyers is straightforward and large. Real estate taxes at Brownstone Lane will rise from near zero to full market taxation over the phase-out period. That is a step change in monthly carrying cost that is not visible in a current listing's tax line, and it should be modeled — at full unabated taxes — before you decide what the apartment is worth. Sellers, correspondingly, should expect informed buyers to price the burn-off in.

• Right of first refusal. The condominium by-laws on file provide that a unit owner who receives a bona fide offer to sell or lease must present it to the board, which holds a right of first refusal; the sponsor, its designee, and a mortgagee taking title through foreclosure are exempt. In practice this means a waiver letter is a closing condition on every sale and every lease — build the timeline for it into your contract, because it is the most common source of delay in older condominium documents of this type.
• Occupancy. The declaration on file permits ownership by an individual, corporation, partnership or fiduciary, with occupancy limited to that individual or to an officer, director or comparable principal of the entity — the standard condominium formulation, and materially more permissive than any cooperative on the same block.
• Pet, sublet and house rules are set by the board and are not established in the documents we hold. Confirm current rules with the managing agent.

Recent sales

Recent closings at this building, curated by The Roebling Team research desk. 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.

Market read. Most recent trades (2024) cleared a median $1,048/sf across 1 sale. Median listing discount -0.7% over ask.

Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01945-7502) and verified listing data. Apartment-level facts (line, condition, asking-price context) curated and cross-verified by The Roebling Team research desk. 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.

Model full taxes, not current taxes. The 421-a exemption is still at 100 percent. Whatever tax figure appears on the listing is not the number you will be paying for most of your ownership. Run the True Monthly Carrying Cost Calculator using an unabated tax estimate and decide whether the apartment still works.

Know which of the three buildings-within-the-building you are buying. A first-floor triplex with a private entrance and a third-floor flat are different assets with different buyers and different resale dynamics. The offering plan's floor plans are on file with us and settle exactly what you are getting.

Plan for the right of first refusal. It is a real closing condition. Your attorney should request the waiver early rather than at the end.

Get the financials and the parking picture. Ask the managing agent for current audited statements, the reserve balance, any assessment history, and a clear statement of how the sponsor-affiliated parking units are operated and whether any are available to residents.

Confirm the floor count and unit type against the documents, not the feeds. City data carries six floors where there are five, and shows 72 units where there are 48 apartments and 24 parking spaces. Both errors propagate into third-party listings.

Get ahead of the tax question. An informed buyer will discount for the 421-a burn-off. Presenting the schedule yourself, accurately, with the phase-down years laid out from the actual tax bill, keeps the conversation factual instead of speculative.

Sell the townhouse premise if you have it. A triplex with a private front door on a through-block Harlem site competes with brownstones, not with condominium flats. Price and market it against that set.

Document what is unique. Private entrance, terrace, parking availability, in-unit metering. These are the variables that separate a good result from an average one in a building where the three unit types are so different.

If you're considering 309 West 118th Street, also evaluate:

• 301 West 118th Street (SoHa 118) — the full-service condominium on the same block by the same architecture firm, with the same 421-a program; the most instructive single comparison available
• 100 West 119th Street — 1910 building converted to condominium in 2005; the prewar-conversion alternative two blocks north
• 88 Morningside Avenue — 2012 condop overlooking Morningside Park; the newer alternative on the park
• 3 West 122nd Street — turn-of-the-century building converted to condominium; Mount Morris Park–adjacent
• 117 West 123rd Street — 2008 condominium delivered through the financial crisis; a read on how late-cycle Harlem new development priced
• 371 West 123rd Street — 2020 ground-up condominium; the current-generation comparison
• 308–312 West 113th Street — boutique new-construction condominium delivering from 2021
• The Parkmor (308–312 West 113th Street) — new-construction condominium on the same stretch, delivering 2021
• 285 West 110th Street (Circa Central Park) — full-service condominium at the top of Central Park; the amenity-forward alternative