ADVANCED GUIDE

How to Read a Condo Offering Plan in NYC

The offering plan is 200 to 600 pages of legalese. Most buyers never read it. The sponsor is counting on that. Here's how to read it, which sections actually matter, and where the red flags hide.

Updated April 2026 • 25 min read • Primary sources cited throughout

In This Guide

What Is an Offering Plan?
The Sections That Matter Most
Red Flags to Watch For
Where to Find the Offering Plan
The Amendment Trap: Why Schedule B Matters More Than Schedule A
The Sponsor Control Period: The Most Dangerous Phase
Frequently Asked Questions

01What Is an Offering Plan?

An offering plan — sometimes called a prospectus — is a legal disclosure document that every condo sponsor in New York State must file with the Attorney General's Real Estate Finance Bureau before selling a single unit. It is required under the Martin Act (General Business Law Article 23-A) for both new construction condominiums and conversions of existing rental buildings.

Think of it as the building's birth certificate, financial projection, and constitution rolled into one document. It contains:

Every unit's price, square footage, and common interest percentage
The building's projected operating budget
An engineering report on the building's physical condition
The by-laws and declaration that govern the condominium
The sponsor's identity, financial background, and litigation history
Special risk factors the AG required the sponsor to disclose
Every amendment filed after the original plan (Schedule B)

The offering plan is not a marketing brochure. It is a regulated disclosure document. But here's the problem: the AG's office reviews the plan for completeness, not for accuracy. The bureau checks that the sponsor filled in every required section. It does not independently verify that the budget projections are realistic, that the engineering report is thorough, or that the sponsor's track record is clean.

What this means for you: "Filed with the AG" does not mean "approved by the AG." The offering plan is the sponsor's document. It is drafted by the sponsor's lawyers. It is designed to satisfy a legal requirement while making the project look as attractive as possible. Read it like a legal document, not like a government seal of approval.

02The Sections That Matter Most

A typical offering plan runs 200 to 600 pages. You do not need to read every page. But you need to read these sections carefully — and your attorney needs to read all of it.

Schedule A — Unit Prices & Common Interest

Schedule A is the price list. It shows every unit in the building with its offering price, approximate square footage, number of rooms, and — critically — its common interest percentage.

The common interest percentage determines two things that will affect you every month for as long as you own the unit:

Your share of common charges. If your unit's common interest is 1.5%, you pay 1.5% of the building's total operating expenses every month.
Your voting power. Votes on building matters are typically allocated by common interest percentage, not one-unit-one-vote.

Watch for: Common interest percentages that don't correlate with unit size. A 600 sq ft studio should not have the same common interest as a 2,000 sq ft three-bedroom. If commercial or retail spaces have disproportionately low common interest, the residential unit owners are subsidizing the commercial spaces' share of building expenses.

Schedule B — Amendments

Schedule B is where the offering plan changes after it was originally filed. Every time the sponsor modifies a price, changes a building specification, updates the budget, or alters a material term, a new amendment is filed.

Schedule B amendments are, in many cases, more important than the original plan. They show you what changed — and changes almost always favor the sponsor. See The Amendment Trap below for a detailed analysis.

Watch for: More than a handful of amendments. Each one is a term the sponsor altered after the plan was filed. Check whether budget projections were increased (meaning original projections were unrealistic), whether unit specifications were downgraded, or whether deadlines were extended.

The Budget — Projected vs. Actual

The offering plan contains the sponsor's projected operating budget for the first year (sometimes longer). This is the number that gets divided by common interest percentages to produce the estimated monthly common charges advertised in listings.

Here is the structural problem: the sponsor has every incentive to low-ball the budget. Lower projected common charges make units easier to sell. The sponsor controls the board during the initial sales period and can defer maintenance, understaff the building, and underfund reserves to make the actuals match the projections — temporarily.

Once enough units are sold and unit owners elect their own board, the true cost of running the building emerges. Common charges increase. Sometimes dramatically.

What to Compare

Projected Budget

As listed in the offering plan

Comparable Buildings

Per-unit costs at similar-age buildings nearby

Current Actuals

Actual common charges being paid today

Year-Over-Year Increases

How fast have common charges risen?

Watch for: A projected budget that is 20% or more below comparable buildings in the same neighborhood. This is not a sign of efficiency — it is a sign that costs are being deferred. Also look for suspiciously low line items for insurance, staffing, or reserves.

The Engineering Report — Building Condition

The offering plan includes an engineering or architectural report on the building's physical condition. For new construction, this covers materials, systems, and expected useful life. For conversions of existing buildings, this is even more critical — it documents what shape the building is actually in.

Pay particular attention to:

Roof condition and estimated remaining useful life. A roof replacement can cost $500,000 to $2M+.
Facade and exterior walls. Local Law 11/FISP requires facade inspections every five years. Repairs can cost millions.
Plumbing risers. In older buildings, riser replacement can cost $30,000 to $80,000 per unit.
Elevator condition. Elevator modernization costs $200,000 to $500,000 per cab.
HVAC and boiler systems. Boiler replacement: $500,000+.
Electrical systems. Outdated panels and wiring are both a safety issue and a cost issue.

Watch for: Language like "serviceable condition," "adequate for current use," or "deferred maintenance noted." These are engineering euphemisms for "this will need expensive work soon." If the engineer notes deferred maintenance and the budget does not include a reserve fund adequate to cover it, you are buying into a future special assessment.

Special Risk Factors

The AG's office sometimes requires sponsors to include a "Special Risks" section highlighting material issues that could affect purchasers. These may include:

Proximity to environmental hazards
Ongoing litigation against the sponsor
Unusual lease structures (e.g., land lease buildings where the condo sits on leased land)
Dependency on a single commercial tenant for revenue
Pending zoning changes that could affect the building

This section exists because the AG determined these risks were material enough to require explicit disclosure. If the offering plan has a Special Risks section, read every word of it.

Sponsor's Financial Obligations & Reserves

The offering plan spells out what the sponsor is financially responsible for during and after the sales period. Look for:

Working capital fund. How much is the sponsor contributing to the initial reserve? Industry practice suggests at least two months of common charges per unit. Less than that is a red flag.
Guarantee period obligations. Some plans include a period during which the sponsor guarantees the budget — covering any shortfall between projected and actual expenses. Look for the duration and scope of any such guarantee.
Unsold unit obligations. Is the sponsor required to pay common charges on unsold units? At what percentage? Some sponsors negotiate reduced common charges on units they retain.
Capital reserve contributions. What percentage of common charges goes into a reserve fund for major repairs? Below 10% is dangerously low.

Watch for: Sponsors who contribute the bare minimum working capital, offer no budget guarantee, negotiate reduced common charges on their unsold units, and project minimal reserve contributions. This combination means the building will be underfunded from day one.

03Red Flags to Watch For

These are the patterns we see repeatedly across NYC condo offering plans. Any one of them should trigger deeper due diligence. Three or more in the same plan should make you question the purchase.

Sponsor Retains Majority of Unsold Units

When the sponsor holds more than 50% of the common interest, they control the board of managers. They elect the board members. They set the budget. They choose the managing agent. They decide whether to fund reserves or defer maintenance. They make every major decision about the building — and they answer to no one except themselves.

This is not a theoretical risk. It is the default condition of every new condo in its early years. The question is: how long does it last, and what does the sponsor do with that power?

What to check: How many units are sold vs. unsold? What percentage of common interest does the sponsor still hold? When is the board transition expected? Has the sponsor sold units to affiliated entities that vote with the sponsor?

Budget Below Comparable Buildings

If the offering plan projects common charges of $800/month for a two-bedroom, but similar buildings in the neighborhood charge $1,200/month, the projections are unrealistic. The sponsor is either planning to defer maintenance, understaff the building, or skip reserve contributions — or all three.

After the sponsor sells enough units and transitions control, the new board inherits a building that has been run on a starvation budget. Common charges spike. Or worse: the building needs immediate capital work with no reserves to pay for it.

What to check: Compare the projected per-unit monthly cost to at least three comparable buildings within a half-mile. Use our Building Reports to look up actual common charges at nearby condos.

Large Number of Schedule B Amendments

A few amendments are normal — construction timelines shift, costs change. But when a plan has 10, 15, or 20+ amendments, it means the offering has been fundamentally altered from what was originally filed with the AG. Each amendment was a change the sponsor made, usually to their benefit.

Amendments can change unit prices, alter building specifications, revise budget projections upward (after units were already sold at lower projected charges), extend construction deadlines, and modify the terms of the sponsor's obligations.

What to check: Read every amendment. Compare the current terms to the original plan. Specifically check whether budget projections, construction specifications, or the sponsor's obligations were changed.

Deferred Maintenance in Engineering Report

For conversion plans especially, the engineering report may document existing conditions that need repair. If the sponsor is not obligated (in the plan) to remedy these conditions before closing, they become the unit owners' responsibility. That means special assessments.

What to check: Read the engineering report's summary of conditions. Cross-reference against the sponsor's stated repair obligations. If the report notes issues the sponsor is not required to fix, budget for those repairs yourself. Check DOB and HPD records for the building's violation history.

Sponsor Self-Dealing

When the sponsor's own affiliated company is the managing agent, and the sponsor's own law firm is the board's counsel, there is no independent oversight. The managing agent serves at the sponsor's pleasure. The attorney advises in the sponsor's interest. Conflicts of interest are structural and unavoidable.

This is not illegal in New York. There is no law requiring an independent managing agent or independent board counsel during the sponsor control period. Which is exactly the kind of regulatory gap we document.

What to check: Is the managing agent affiliated with the sponsor? Is the board's law firm the same firm that prepared the offering plan? Check our Managing Agent Ratings for the firm's track record across buildings.

Inadequate Reserve Fund

Buildings need reserves for major capital expenditures: roof replacement, elevator modernization, facade repairs, boiler replacement, plumbing risers. If the offering plan projects reserve contributions below 10% of operating expenses — or worse, projects no reserve contributions at all — the building will not have money for major repairs when they come due.

The result: special assessments. These are one-time charges levied against every unit owner, and they can range from $5,000 to $100,000+ per unit depending on the scope of work.

What to check: What percentage of the annual budget is allocated to reserves? What is the projected reserve balance after five years, ten years? Does the engineering report identify capital work that will be needed within the first ten years? Is the reserve adequate to cover it? See our Special Assessments Guide for more.

Tax Abatement Expiring (421-a, J-51)

Many newer NYC condos were built with 421-a tax abatements, which dramatically reduce the building's real estate taxes for 10, 15, or 25 years. Some older conversions benefited from J-51 abatements. When these abatements expire, the building's tax bill can double or triple — and that increase is passed directly to unit owners through common charges.

Sponsors are required to disclose the abatement and its expiration in the offering plan. But the disclosure is often a single paragraph buried in hundreds of pages, and the marketing materials almost never mention it.

421-a Abatement Expiration Impact

$600

Monthly taxes during abatement (example 2BR)

$1,800

Monthly taxes after expiration (same unit)

These are illustrative figures. Actual impact depends on the building's assessed value and the abatement schedule. Check DOF Property Tax records for your building's specific abatement timeline.

What to check: Does the building have a 421-a or J-51 abatement? When does it expire? What is the estimated post-abatement tax bill? Calculate the post-abatement monthly cost and decide if you can still afford the unit at that level.

04Where to Find the Offering Plan

You have four avenues to obtain a building's offering plan:

Attorney General's Office

The Real Estate Finance Bureau maintains records of all filed offering plans and amendments. You can request copies, though it may take time and there may be a copying fee. This is the authoritative source.

Building Management

The managing agent or board is generally required to make the offering plan available to prospective purchasers and existing unit owners. Request it in writing. If they refuse or delay, that itself is a data point about how the building is managed.

The Sponsor or Selling Agent

During the initial sales process, the sponsor must provide the offering plan to prospective buyers. If you're buying a resale unit in a building still in the sponsor control period, you can request it from the sponsor's sales office.

Your Real Estate Attorney

Any qualified NYC real estate attorney will obtain and review the offering plan as part of their due diligence. This is not optional — it is standard practice. If your attorney does not review the offering plan before you sign, get a different attorney.

Pro tip: When you request the offering plan, specifically ask for all Schedule B amendments. Some managing agents will hand you the original plan without the amendments — which is like reading a contract without the addenda. The amendments are where the material changes live.

05The Amendment Trap: Why Schedule B Matters More Than Schedule A

Here is one of the most counterintuitive truths about NYC condo offering plans: the original plan is often less important than the amendments that came after it.

When a sponsor files an offering plan, the unit prices, budget projections, building specifications, and terms all represent the sponsor's initial proposal. But the Martin Act allows sponsors to file amendments — Schedule B filings — that modify virtually any term of the original plan. And they do. Frequently.

What Amendments Can Change

Unit prices. Up or down, with the sponsor capturing the benefit either way.
Building specifications. That rooftop amenity might become "planned for future development." Those marble countertops might become quartz.
Budget projections. The sponsor may file an amendment increasing the projected budget after early buyers purchased based on the original lower estimate.
Construction timeline. Delays that push closing dates and occupancy.
Sponsor's obligations. Warranty periods, repair commitments, and guarantee terms can all be narrowed.
Common interest allocations. Percentages can shift, changing your share of expenses and voting power.

The Structural Problem

Existing purchasers — people who already signed contracts based on the original plan — are often deemed to have accepted amendments if they don't object within a specified period. The objection period may be as short as 15 days. The amendment may arrive as one document in a stack of papers. If you miss the deadline, the amendment takes effect.

This creates an information asymmetry that consistently favors the sponsor. The sponsor knows exactly what changed and why. The purchaser receives a dense legal document and has days to evaluate it.

The pattern we see: Sponsor files the plan with optimistic projections. Sells early units. Files amendments raising costs, reducing specifications, or altering terms. Early buyers are locked into their contracts. Later buyers see a different plan than the one early buyers relied on. The sponsor benefits at every stage.

How to Protect Yourself

Read every amendment. Not just the summary — the full text. Have your attorney read them too.
Compare to the original. Create a side-by-side of key terms: budget, specifications, sponsor obligations, timeline.
Check amendment dates vs. sales dates. Were material changes filed after most units were already under contract?
Ask the seller about amendments. If you're buying resale, ask what amendments were filed during their ownership and how they were affected.

06The Sponsor Control Period: The Most Dangerous Phase

Every new condo and conversion begins its life under sponsor control. The sponsor — the developer or converter who created the condominium — controls the board of managers, sets the budget, chooses the managing agent, selects the building's counsel, and makes every material decision about how the building is run.

This period is supposed to be temporary. Under the typical by-laws, unit owners gain the right to elect a majority of the board once 50% or more of the units are sold to bona fide purchasers (i.e., unaffiliated third-party buyers). But in practice, the sponsor control period can last years — sometimes a decade or more.

What the Sponsor Controls

The Board

The sponsor appoints board members, who serve at the sponsor's pleasure. These board members owe fiduciary duties to all unit owners — but they were selected by the sponsor and can be replaced by the sponsor.

The Budget

The sponsor-controlled board sets common charges. The incentive is to keep charges low to support unit sales — even if that means deferring maintenance or underfunding reserves.

The Managing Agent

The sponsor selects the property management firm. In many cases, this is a sponsor-affiliated company. Even when it's not, the managing agent knows who hired them and who can fire them.

Building Counsel

The sponsor selects the board's law firm. Often, this is the same firm that prepared the offering plan. This firm now advises the "independent" board on matters that may involve the sponsor's own obligations.

Capital Decisions

Major repairs, improvements, insurance coverage, contractor selection — all controlled by the sponsor's appointees. Unit owners have no meaningful voice until the board transitions.

Information Flow

The sponsor-controlled board decides what financial information to share with unit owners, how transparent to be about building operations, and whether to hold regular meetings. Many sponsor-controlled boards operate with minimal transparency.

How Sponsors Extend Control

Sponsors do not always relinquish control willingly. Common tactics include:

Holding unsold units. If the sponsor retains 51% of common interest, they control the board indefinitely. The offering plan is fulfilled, units are "offered," but the sponsor chooses not to close on them.
Selling to affiliated entities. The sponsor sells units to related LLCs or family members. These are technically "sold" but the buyers vote with the sponsor.
Bulk sales to investors. The sponsor sells blocks of units to a single investor at a discount, with an understanding (explicit or implicit) about board voting.
Delay tactics. The sponsor drags out the transition process, fails to provide required financial records, or disputes the unit count that triggers transition.

The danger: During the sponsor control period, the building may accumulate years of deferred maintenance, inadequate reserves, and sweetheart contracts with sponsor-affiliated vendors. When control finally transitions to unit owners, the new board inherits a building that has been systematically underserved. The cost of catching up falls entirely on unit owners — often through large special assessments. This is not a bug. For many sponsors, it is the business model.

Protecting Yourself During Sponsor Control

Attend every board meeting. You may not have a vote, but you have the right to attend. Your presence on the record matters.
Request financial statements. Under the by-laws and the Business Corporation Law (as applicable), unit owners have the right to inspect the condominium's books and records.
Document everything. Maintenance requests, communications with management, building conditions. If you eventually need to challenge the sponsor's stewardship, contemporaneous records are your best evidence.
Organize with other unit owners. A collective request for information, a joint letter to the AG's office, or a coordinated legal action carries more weight than an individual complaint.
Know your rights under the offering plan. The plan itself may contain provisions about sponsor obligations, transition timing, and owner rights. Hold the sponsor to the document they wrote.
File a complaint. If the sponsor is violating the terms of the offering plan, file a complaint with the AG's Real Estate Finance Bureau.

07Frequently Asked Questions

What is a condo offering plan in NYC?

An offering plan (also called a prospectus) is a legal disclosure document filed with the New York Attorney General's office. It is required for every new condo construction and condo conversion in New York. It contains the building's budget, unit prices, common interest allocations, engineering reports, the sponsor's background, and every material term of the offering. It is the single most important document a condo buyer should read before purchasing.

Where can I find a building's offering plan?

You can obtain an offering plan from four sources: (1) The New York Attorney General's Real Estate Finance Bureau, which maintains records of all filed plans. (2) The building's managing agent, who is required to make it available to prospective purchasers. (3) The sponsor or selling agent during the sales process. (4) Your real estate attorney, who should obtain and review it as part of due diligence.

What are the biggest red flags in a condo offering plan?

The biggest red flags include: a sponsor retaining majority ownership of unsold units (giving them board control), budget projections significantly below comparable buildings, a large number of Schedule B amendments changing the original terms, deferred maintenance noted in the engineering report, sponsor self-dealing through affiliated managing agents or law firms, inadequate reserve fund projections, and expiring tax abatements like 421-a or J-51 that will cause common charges to spike.

What is Schedule B in a condo offering plan?

Schedule B contains all amendments to the original offering plan. After the initial plan is filed with the AG's office, sponsors can file amendments that change unit prices, building specifications, budget projections, common interest percentages, and other material terms. A large number of Schedule B amendments is a red flag because it means the original offering has been substantially altered — often in the sponsor's favor.

How long is the sponsor control period for a NYC condo?

The sponsor control period typically lasts until 50% or more of the units are sold to bona fide purchasers, at which point unit owners can elect a majority of the board. However, sponsors frequently delay this transition by retaining unsold units, selling to affiliated entities, or structuring sales to maintain control. During this period, the sponsor controls the board, sets the budget, selects the managing agent, and makes all major building decisions with minimal accountability to other unit owners.

What happens when a 421-a tax abatement expires on a condo?

When a 421-a (or J-51) tax abatement expires, the building's real estate taxes increase to the full assessed value — often doubling or tripling common charges. Sponsors are required to disclose abatement expiration in the offering plan, but the disclosure is often buried in fine print. Buyers should calculate the post-abatement tax bill before purchasing and factor it into their affordability analysis. Check DOF Property Tax records for your building's abatement timeline.

Should I hire a lawyer to review a condo offering plan?

Yes — without exception. An offering plan is a complex legal document, typically 200 to 600 pages, full of provisions that significantly affect your financial exposure. A qualified real estate attorney experienced in NYC condo purchases should review the offering plan, all Schedule B amendments, the budget, the engineering report, and the by-laws before you sign a purchase agreement. Attorney review is standard practice in NYC real estate transactions and typically costs between $2,000 and $4,000.

Continue Your Due Diligence

The offering plan is one piece of the puzzle. Use these resources to complete your research.

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