817 Classon Avenue

ND Architecture & Design filed the new building in January 2024. The filing describes a seven-story residential building with a cellar, 74 feet tall, with 19 dwelling units and about 24,300 square feet of construction floor area. The first permit issued in December 2024. Earlier construction reporting cited about 19,900 square feet of residential area, or roughly 1,050 square feet per home on average.

The mix runs from one to three bedrooms, and most homes have private outdoor space as gardens, terraces or roof decks, per listing records. Published finishes include wide-plank white oak floors, ceilings above 10 feet, walnut kitchen cabinetry with Vittoria marble counters, Fisher & Paykel and Miele appliances, travertine baths, multi-zone heating and cooling, and in-unit GE washers and dryers. Building services listed are a package room and bike storage; some listing records also list a fitness room and rooftop terrace. Confirm the amenity list against the plan.

Per the offering plan filed with the New York State Attorney General (plan CD250213), the plan was submitted July 10, 2025 and accepted March 12, 2026 at a total offering price of $26,350,000, with 817 Classon Owner LLC as sponsor. The record lists 33 units: 19 residential and 14 storage. Amendment 1 raised the total offering price by $350,000 to $26,700,000. The database gives Amendment 1 a review date of March 24, 2026 while its contents note read "reviewed 5/8/2026"; the record does not say which is right. Amendment 2 declared the plan effective on April 28, 2026, on three units, or 16 percent, in contract. The database records three units sold, a figure it has not updated since the closings began.

Sales opened in March 2026. Published asks have run from about $1.075 million for a two-bedroom to $1.575 million for a ground-floor home, with common charges near $976 a month on the higher end. Some 2026 listings offered a sponsor incentive covering the buyer's transfer taxes, the sponsor's attorney fee and two years of common charges on accepted offers. Read any such concession against the contract, because it changes the effective price.

ACRIS shows deeds recorded from July 2026. Among those checked:

• Unit 3B: $1,150,000, deed dated July 16, 2026
• Unit 5A: $1,450,000, deed dated July 29, 2026
• Unit 6C: $1,425,000, deed dated August 12, 2026
• Unit 3C: $1,350,000, deed dated August 25, 2026, recorded September 8

City records also show closing documents on units 1A, 3A, 4C, 5C, 6A, 6B, 7A and 7B through September 2026. One brokerage record shows a top-floor three-bedroom of about 1,200 square feet at $2,000,000. That figure is not confirmed against a recorded deed here. Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.

Recent sales

Sales sourced from NYC Department of Finance recorded transfers (BBL 3-01178-0007; 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.

The plan is effective. Contracts are binding under the plan's terms, and closings are under way. Read every amendment, including any price changes after Amendment 1.

Concessions. Where the sponsor pays transfer taxes or common charges, compare the net price with recorded deeds, not with the asking price.

Closing costs. In sponsor sales the buyer customarily pays the New York State transfer tax (0.4%) and the New York City real property transfer tax (1.425% above $500,000), plus the state mansion tax of 1% at $1 million and above. Most homes here sit just above the $1 million line. Use the calculators below to run your price.

Certificate of occupancy. The Department of Buildings shows a certificate of occupancy issued on the new-building job in April 2026. Ask whether it is final or temporary and what punch-list items remain.

Carrying costs and abatement. The plan's budget sets common charges and projected real estate taxes. No tax abatement has been confirmed in this review; confirm the tax position in the plan.

Sponsor control. The sponsor controls the board until enough units close to turn it over. The by-laws set the threshold.

If you're considering 817 Classon Avenue, also look at these Crown Heights condominiums:

• 823 Classon Avenue — The Prospect Condominium, 24 residences a few doors south, with a 421-a exemption ending in 2027
• 762 Park Place — 23-residence, seven-story condominium completed in 2018, full tax with no 421-a
• 1000 Union Street — 20-residence condominium with terraces, a gym, a roof deck and parking
• 715 Prospect Place — The Sinclair, 16 residences across two walk-up buildings with an active 421-a benefit
• 529 Park Place — eight-residence elevator condominium with garden duplexes
• 516 Classon Avenue — 16-residence condominium farther north on Classon Avenue