9.2 Condominium Ownership & Offering Plans

Key Takeaways

  • Condominium ownership combines fee simple title to the individual unit's interior air space with an undivided interest as tenants in common in common elements.
  • Individual condo owners receive separate real property deeds, separate tax bills, and finance purchases through traditional recorded real estate mortgages.
  • The Martin Act (NYS General Business Law Article 23-A) requires sponsor offering plans to be reviewed and accepted for filing by the NY Attorney General before public marketing.
  • A draft offering plan submitted for AG review is known as a Red Herring, while the final AG-accepted offering plan is called the Black Book.
Last updated: July 2026

Condominium Ownership & Offering Plans

Condominium ownership represents a distinct real property interest that differs fundamentally from cooperative housing. In New York, condominiums are governed by the New York Condominium Act (codified in Article 9-B of the Real Property Law). Licensed brokers must understand condominium property rights, governing documentation, and the rigorous statutory disclosure rules enforced by the New York State Attorney General under the Martin Act.


1. Legal Structure of Condominium Ownership

Unlike a co-op shareholder who owns personal property stock shares, a condominium owner holds a dual property interest comprising both individual fee simple title and shared undivided tenancy:

  1. Fee Simple Interest in Unit Interior: The unit owner holds absolute fee simple ownership of the specific interior space of their apartment (often defined legally as the "air space" enclosed within the interior surfaces of the walls, floors, and ceilings).
  2. Undivided Interest in Common Elements: The unit owner holds an undivided interest as a tenant in common in the building's common elements. Common elements include structural components (foundations, exterior walls, roof), land, shared hallways, lobbies, elevators, boiler rooms, fitness facilities, and outdoor courtyards.

General Common Elements vs. Limited Common Elements

  • General Common Elements: Shared components available for use by all unit owners, such as main entrances, lobbies, elevators, and central utility rooms.
  • Limited Common Elements: Portions of the common elements reserved for the exclusive use of one or a specified group of unit owners, such as private balconies, terraces, designated storage units, or assigned parking spaces.
Feature / AspectGeneral Common ElementsLimited Common Elements
Access & Right of UseAll unit owners in the condominiumRestricted exclusively to specified unit(s)
Typical ExamplesLobby, roof, central elevators, land, boiler roomPrivate terrace, balcony, assigned parking space
Ownership AllocationUndivided fractional interest shared by allUndivided fractional interest assigned to unit
Maintenance ResponsibilitiesFunded via standard monthly common chargesOperational repairs often assigned to exclusive user

2. Real Property Status & Documentation

Because a condominium unit is legally recognized as separate real property under RPL Article 9-B, transactions mimic single-family real estate sales:

  • Deed Delivery: At closing, the buyer receives a formal deed—in New York, typically a Bargain and Sale Deed with Covenant against Grantor's Acts. The deed conveys title to the unit along with its associated percentage of undivided common interest.
  • Separate Tax Lots: Each condominium unit is assigned an individual real property tax block and lot number by the local taxing authority. Municipal real estate taxes are billed directly to individual unit owners; there is no single master tax bill for the entire building.
  • Mortgage Financing: Buyers finance purchases using standard real estate mortgages recorded in the county land records. If an individual owner defaults on their mortgage, the lender forecloses solely against that specific unit without jeopardizing neighboring owners.
  • Common Charges: Unit owners pay monthly common charges to fund building operations, maintenance, reserves, and staff salaries. Unlike co-op maintenance, condominium common charges do not include real estate taxes or mortgage debt service, as there is no underlying blanket building mortgage.

3. Key Governing Documents

A condominium project is established and managed through three primary legal instruments:

  1. Declaration of Condominium (Master Deed): The foundational instrument recorded in the county land records. It formally submits the property to the New York Condominium Act, describes the land and building layout, defines unit boundaries, specifies general and limited common elements, and establishes each unit's percentage of common interest.
  2. Condominium Bylaws: The administrative rules governing the operation of the Board of Managers and the association. Bylaws dictate election procedures, board meeting frequencies, voting percentages, common charge assessment procedures, repair responsibilities, and insurance requirements.
  3. Rules and Regulations (House Rules): Detailed operational rules adopted by the board of managers concerning day-to-day conduct, pet restrictions, noise controls, move-in procedures, and architectural guidelines.

4. The Martin Act & Attorney General Oversight

In New York State, the public offering, sale, and conversion of real estate syndications, cooperatives, and condominiums are strictly regulated by General Business Law (GBL) Article 23-A, universally known as The Martin Act.

The Real Estate Finance Bureau of the New York State Office of the Attorney General (AG) enforces the Martin Act to protect purchasers from fraud and non-disclosure.

The Offering Plan Process

Before a sponsor (developer or owner converting a rental building) can offer co-op or condo units for sale to the public, they must submit a comprehensive disclosure document known as an Offering Plan to the Attorney General.

Offering Plan StageTerminology & Statutory Definition
Draft Plan SubmissionRed Herring: The preliminary offering plan submitted to the AG for review. The cover page features a mandatory red legend warning that the document is a draft and sales cannot occur until accepted.
AG Review PeriodThe Attorney General reviews the plan for statutory compliance, full financial disclosure, architectural accuracy, and legal sufficiency.
Final Accepted PlanBlack Book: The final Offering Plan formally accepted for filing by the Attorney General. Only after the Black Book is issued can the sponsor legally accept binding purchase contracts.
Plan EffectivenessDeclaring the Plan Effective: The sponsor must declare the plan effective within 15 months of AG acceptance. Under current NY law (including HSTPA 2019 amendments), non-eviction conversion plans require at least 15% of existing tenants or outside buyers to execute bona fide purchase contracts before the plan can be declared effective.

5. Sponsor Obligations and Disclosure Rules

The sponsor must provide transparent disclosures within the Black Book, including:

  • First Year Budget: Detailed projections of building operational expenses, management fees, utilities, and reserve fund allocations for the first year of condominium operation.
  • Engineer's Report: A comprehensive architectural and engineering evaluation detailing the physical condition of structural components, roofs, plumbing, electrical, heating, and elevator systems.
  • Sponsor Rights & Control: Limits on sponsor voting control post-conversion, requirement to pay common charges on unsold units, and conditions under which sponsor control of the Board of Managers transitions to unit owners.
  • New York City Special Tax Laws: Under NYC Administrative Code Title 26 (Local Law 70), sponsors converting rental properties must deposit statutory reserve fund contributions (typically equal to 3% of the total offering price) to cushion future capital expenditures.
Test Your Knowledge

How is ownership of common elements structured among individual unit owners in a New York condominium?

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Test Your Knowledge

Which New York State statute empowers the Attorney General to regulate the public offering and sale of real estate securities, co-ops, and condominiums?

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Test Your Knowledge

What is the preliminary draft offering plan submitted to the New York Attorney General for regulatory review prior to final approval called?

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