Selling a FiDi Condo Before an Abatement Ends: Get the Facts
Selling a FiDi condo before an abatement ends is not simply a race to list before a calendar date. It is a tax, pricing, contract, financing, and timing problem. First identify the benefit, because 421-a, 421-g, J-51, and the NYC co-op and condo abatement follow different rules.
Before setting a price, review Brett’s FiDi seller guide for the building-level comparison principles that matter in downtown Manhattan. Then obtain the current Department of Finance bill or account for the unit, the latest notice of property value, and the building’s current resale package.
Identify the benefit before discussing the deadline

421-a is a partial exemption
421-a is a partial exemption for qualifying new multiple dwellings. The older 421-a (1-15) program has 10-, 15-, 20-, or 25-year post-construction schedules. The separate 421-a (16) Affordable New York program has different structures. Verify the exact program, certificate, benefit dates, assessed-value cap, and unit record before projecting taxes.
The older 421-a schedules include graduated phaseouts. Depending on the benefit type, the post-construction schedule can include two full years followed by eight phaseout years, 11 full years followed by four phaseout years, 12 full years followed by eight phaseout years, or 21 full years followed by four phaseout years. Those schedules describe program categories, not a particular apartment. A seller must confirm the building’s approved benefit type, commencement and completion dates, remaining benefit years, exemption percentage, and any assessed-value cap or other project limitation. Never convert a general schedule into a unit-specific tax promise.
421-g is a legacy Lower Manhattan program
421-g covered qualifying Lower Manhattan nonresidential-to-residential conversions. The program expired June 30, 2006; DOF separately lists December 30, 2007 as the new-application deadline. HPD states that projects commencing conversion after 2006 are ineligible. Confirm any legacy benefit in actual building and DOF records, not by neighborhood.
J-51 covers rehabilitation and conversion
Traditional J-51 offered an exemption on increased taxes from qualifying residential rehabilitation or conversion, not necessarily the entire bill, plus an abatement of existing taxes. Its exemption could last 14 or 34 years, depending on project type. HPD says traditional J-51 is unavailable for work completed after June 29, 2022.
J-51 R is a separate reform program. HPD’s interim FAQ describes an abatement for approved costs available up to 20 years and specific limits on combining benefits. Because guidance is interim, confirm the certificate, approved costs, program version, dates, and any final rules before describing a particular unit.
The co-op and condo abatement is different
The NYC Cooperative and Condominium Property Tax Abatement is a separate benefit for eligible primary-residence owners. It is not the same as 421-a, 421-g, or J-51. The building’s board or authorized managing agent applies for the development, while individual owners provide eligibility information and do not apply directly to DOF.
The development generally must be tax class 2 and cannot concurrently receive J-51, 420-c, 421-a, 421-b, or 421-g benefits, subject to the June 30 expiration rule. Unit conditions include primary residence, deed or transfer-tax filing, ownership limits, and restrictions on sponsor, business, commercial, parking, and storage units.
Verify the unit’s actual benefit

Read the DOF bill, not just the offering plan
A plan may discuss projected taxes, anticipated benefits, or a risk that benefits will not be obtained. It may also be old, amended, or written for the building rather than the seller’s tax lot. That information is useful history, but it does not prove the current unit’s actual abatement amount or expiration date.
For a condominium, the DOF account and property-tax bill are the starting points for the current benefit. NYC 311 says the first-quarter bill tells individual condo owners whether they receive the abatement and states the amount. Ask the managing agent for the latest benefit breakdown.
Gather the records a buyer will request
Request the current DOF bill, NOPV, benefit breakdown, tax account history, and any correspondence about primary-residence verification. Also request the building’s budget, financial statements, insurance information, recent assessments, planned capital work, and managing-agent resale requirements.
Use the AG plan as context only
The New York Attorney General’s offering-plan rules require tax projections and disclosures about assessed valuation, reassessment timing, and the possibility that projected benefits may not be obtained. That makes the plan important due diligence, especially when a benefit was promised during a sponsor sale.
Model the tax change without guessing

Separate exemption, abatement, and tax rate
An exemption reduces the value used to calculate taxable value. An abatement is subtracted from the tax amount after the tax calculation. The distinction affects how a benefit changes when assessed value, tax rates, or market conditions move. For class 2, DOF generally uses actual assessed value or the lower transitional assessed value where applicable, subtracts exemptions, applies the tax rate, then subtracts abatements. For larger class 2 buildings with more than 10 units, assessed-value changes are phased in over five years.
That phase-in does not guarantee a stable bill after a tax benefit ends.
Tax rates can change each year. A projection should therefore show assumptions for market value, assessed value, transitional assessed value, exemption or abatement amount, tax rate, and benefit phaseout. Label every result as an estimate, and identify the first tax year in which the unit is expected to be fully taxable.
A hypothetical example
Assume, only for illustration, that current annual tax is $12,000 after a benefit, which reduces the bill by $6,000. If assessment and tax rate do not change, ending the benefit produces a modeled $18,000 bill, or $1,500 monthly instead of $1,000. That $500 monthly increase is not a property-specific projection. It ignores reassessment, tax-rate changes, transitional assessed value, unit allocation, eligibility changes, and any other exemption. The point is to show the buyer the size of the possible carrying-cost change while making the assumptions visible.
A phaseout example should be equally cautious. If a hypothetical $6,000 annual benefit declines by 20 percentage points over five steps, the modeled savings would be $4,800, $3,600, $2,400, $1,200, and $0. That sequence is only a teaching example, not the schedule for an unidentified FiDi unit.
Have the tax professional or attorney check the model
A buyer may ask for a written explanation, a tax escrow, a price adjustment, or a representation limited to the seller’s actual knowledge. The seller should not promise a future tax amount that depends on DOF action, board filing, tax rates, assessment decisions, or buyer eligibility.
Reassessment and valuation matter

Market value is not the purchase price
DOF values class 2 property using rules that generally treat larger condos and co-ops as income-producing property. For a condo created after July 2007, DOF may use a unit allocation factor supplied by the condominium board. A unit’s sale price and the assessed value used for taxes are related but not identical.
Reassessment timing belongs in the contract conversation
New construction, rehabilitation, conversion, and tax-lot changes can affect projected assessed value and the timing of reassessment. The AG rules require appropriate disclosure of projected post-completion valuation and the approximate reassessment date in sponsor offering plans.
For a resale, ask whether the current bill reflects a completed assessment, a transitional value, or a benefit that is already phasing out. Put the confirmed facts and unresolved questions in the contract file. A closing date near July 1 needs a tax-year check.
January 5 is specifically a co-op/condo-abatement taxable-status date, not a universal 421-a, 421-g, or J-51 preservation date.
Timing the listing and contract

Listing before the end date is not enough
A seller may think that going into contract before expiration preserves the benefit. That conclusion is unsafe without confirmation of the program rules, tax year, transfer date, buyer eligibility, and contract language. Some benefits depend on ownership, primary residence, building filing, or the status on a specific taxable status date.
Build a realistic closing calendar
A financed resale condo commonly needs roughly 60 to 90 days after full contract execution, while cash can close faster. Financing, appraisal, title review, building documents, waiver processing, payoff information, or scheduling can extend the period.
Disclose clearly and narrowly
Use a written tax-benefit rider or disclosure prepared with counsel. State the program identified in current records, the current bill amount, the stated expiration or phaseout information, and the assumptions that remain unverified. Explain that future taxes depend on DOF assessment, tax rates, benefit rules, and eligibility.
Do not say taxes will increase by a fixed amount unless a qualified professional has prepared a property-specific projection and the contract makes the assumptions clear. Do not say a buyer will receive the seller’s personal benefit. Primary-residence and other eligibility requirements can change the result.
Financing and buyer affordability

Buyers underwrite the post-benefit payment
Mortgage qualification and household affordability are not the same. A buyer’s total housing payment can include principal, interest, property taxes, insurance, mortgage insurance, and condo charges. If the tax benefit ends, the increased monthly payment can reduce the price a buyer can support even when the loan amount is unchanged.
Give serious buyers a current bill and a clearly labeled scenario. The buyer can ask the lender to use a higher tax assumption, which may affect debt-to-income calculations and approval. A seller who hides the issue risks a late renegotiation or failed financing.
Rate locks do not solve tax uncertainty
A rate lock can protect a mortgage rate for a stated period, but it does not freeze property taxes or common charges. Extensions can cost money, and changes in the buyer’s application or appraisal can affect the locked terms.
Price and position the apartment

Compare total monthly cost
Build a comparison with two or three realistic alternatives. Include asking price, common charges, current property taxes, assessments, benefit status, condition, floor, exposure, layout, amenities, and sponsor inventory. A lower price does not always win if the unit has a higher post-benefit monthly cost.
Avoid a false bargain
A low current tax number can attract clicks and then create distrust when the buyer discovers the benefit ends. Lead with the apartment’s real value, then explain the tax transition. Clear information helps buyers compare the unit with alternatives using the same assumptions.
If the projected post-benefit cost is meaningfully higher, consider whether the asking price should absorb part of that burden. The answer depends on comparable sales, current inventory, condition, financing, and the buyer pool. The seller’s net sheet should test several price points before launch.
Seller Strategy

Prepare the tax file before launch
Obtain the current bill, NOPV, benefit breakdown, tax account history, program certificates, board correspondence, and a written timeline. Have counsel reconcile differences between the current bill, offering plan, amendments, and managing-agent statements.
Build three net sheets
Run net sheets at target, negotiated, and minimum acceptable prices. On a typical individual residential condo resale above $500,000, NYC RPTT is ordinarily seller-side at 1.425%; NYS base transfer tax is generally 0.4%. At $3 million or more, a separate NYS additional base tax generally applies. Confirm exemptions and contractual allocation with counsel.
Launch with a buyer-ready explanation
Prepare a one-page explanation of current tax, benefit type, phaseout or expiration, assumptions, and likely buyer questions. Share the actual bill in due diligence. A prepared seller can use the tax issue to demonstrate control rather than allowing it to become a surprise late in the deal.
Keep the explanation consistent across the listing, broker remarks, buyer communications, and contract package. If the benefit status changes before closing, update the buyer promptly and preserve the supporting bill or notice so the file shows what was known at each stage.
For a FiDi tax-benefit sale review, contact TheNewYorkCityBroker.com/contact-me before choosing the asking price.
A neutral FiDi building example

One Wall Street Condominium
The Attorney General database identifies ONE WALL STREET CONDOMINIUM, Plan CD170216, as a rehabilitation condominium offering at One Wall Street. It lists 566 residential and one commercial unit, accepted May 3, 2018 and effective January 11, 2023. The record establishes plan identity, not the current benefit status of any unit. This example is intentionally neutral. The plan record does not establish that any unit receives 421-a, 421-g, J-51, or the co-op and condo abatement. It shows why a building’s public plan record and a seller’s current DOF bill answer different questions.
What to hand the buyer’s attorney

Final checklist before accepting an offer

Confirm the benefit name and whether it is an exemption, an abatement, or both. Confirm the unit’s current amount on the DOF record. Confirm the building’s tax class, filing status, phaseout schedule, expiration date, and eligibility requirements. Confirm whether the buyer’s planned use affects eligibility.
The goal is not to promise a permanently low tax bill. The goal is to give the market a defensible price, a documented carrying-cost story, and a closing plan that does not depend on an unverified benefit. That is the stronger position when a FiDi condo’s abatement is ending.
Frequently Asked Questions
No. An offering plan can contain projected taxes, anticipated benefits, historical disclosures, and special-risk language. It may predate amendments, reassessment, phaseout, or eligibility changes. Use it for history, then verify the unit’s current benefit and amount on the NYC Department of Finance bill or account.
For a condo, the current DOF record is the practical starting point. Ask the managing agent for the latest benefit breakdown and supporting certificate or approval history. If the documents disagree, have the seller’s attorney reconcile them before marketing a tax figure or making a contract representation.
No. 421-a is a partial exemption for qualifying new multiple dwellings. The co-op and condo abatement is separate, with the board or managing agent applying for the development. A building may be ineligible for that abatement while receiving 421-a, J-51, or another listed benefit. The distinction matters because exemptions reduce taxable value, while abatements are subtracted from the calculated tax. Their eligibility rules, phaseout schedules, records, and effect on a buyer can differ. Identify the exact program before estimating a seller’s tax savings or post-expiration payment.
No new 421-g applications are available. The program expired on June 30, 2006, and qualifying conversion permits had to fall within the historic statutory period. A FiDi building’s location or office-conversion history does not by itself prove that 421-g benefits exist.
A legacy benefit can still be relevant if the building has authoritative records showing it received the program. Even then, confirm the remaining term and unit-level effect through DOF and building records. Do not use 421-g as a generic label for every Lower Manhattan conversion.
Show the current tax bill, NOPV, benefit breakdown, relevant certificate or approval record, and a clear timeline of the current benefit and expected phaseout or expiration. Include a scenario using stated assumptions, but label it as an estimate rather than a promise.
The buyer’s attorney and lender should review the actual records. The package should also include common charges, assessments, budgets, financial statements, insurance information, and planned capital work. A complete file helps the buyer underwrite the future monthly cost and reduces the risk of a late price renegotiation.
Do not assume so. The result can depend on the particular program, tax year, taxable status date, transfer date, buyer eligibility, building filing, and contract terms. Signing before a stated expiration date does not automatically guarantee that the buyer receives the seller’s benefit.
Have counsel and the managing agent prepare a written timeline, then ask the buyer’s attorney and lender to review it. If the closing could cross a benefit deadline, address the issue expressly in the contract and avoid representations broader than the verified records support.
Compare the apartment with realistic same-building and nearby alternatives using total monthly cost. Include common charges, current taxes, projected post-benefit taxes, assessments, condition, floor, exposure, layout, amenities, and sponsor competition. Then run seller net sheets at several prices rather than relying on a neighborhood median.
A tax adjustment is not automatically equal to the capitalized value of every future tax increase. Buyers may discount uncertain projections, financing constraints, or building risk differently. The strongest pricing decision uses verified records, current comparable sales, active competition, and a clear explanation of what the buyer will pay today and after the benefit changes.
For this FiDi abatement sale or another NYC listing, contact TheNewYorkCityBroker.com/contact-me.





