Condo Book Research
Data studies from NYC condo offering plans, recomputed as new plans are filed.
Prices & Value
The Most Expensive Condos Ever Sold in NYC
$240 million the highest single-apartment condo sale in the city records we track
The top NYC condo sales on record, from the deeds filed with the city: who leads, which towers dominate Billionaires' Row, and what buyers at the top pay.
Prices & Value
How Does One Manhattan Square Compare to Nearby Condos?
13% below its typical closing price vs. the median of nearby new condos
One Manhattan Square vs. the new condos around it in the Lower East Side and Two Bridges: closing prices, sales pace and the competition still selling, from city records and offering plans.
Prices & Value
How Does One Wall Street Compare to Nearby Condos?
47% below its typical closing price vs. the median of nearby new condos
One Wall Street vs. the new condos around it in the Financial District: closing prices, sales pace and the competition still selling, from city records and offering plans.
Prices & Value
How Does Front and York Compare to Nearby Condos?
37% above its typical closing price vs. the median of nearby new condos
Front and York vs. the new condos around it in Dumbo and the surrounding Brooklyn waterfront: closing prices, sales pace and the competition still selling, from city records and offering plans.
Prices & Value
How Does Longfield Compare to Nearby Condos?
8% above its typical closing price vs. the median of nearby new condos
Longfield vs. the new condos around it in downtown Flushing: closing prices, sales pace and the competition still selling, from city records and offering plans.
Prices & Value
How Does The Towers of 301 Park Avenue Compare to Nearby Condos?
19% above its typical closing price vs. the median of nearby new condos
301 Park Avenue vs. the new condos around it in Midtown East: closing prices, sales pace and the competition still selling, from city records and offering plans.
New Condos by Area
The SoHo Condo Market
$2,481 median SoHo new condo closing per square foot, last ten years
What new SoHo condos sell for, how fast buildings sell out, how few new plans there are and what is coming next, from offering plans and deeds.
New Condos by Area
The Harlem Condo Market
$1,024 median Harlem new condo closing per square foot, last three years
What new Harlem condos sell for, by bedroom and year, how fast buildings sell out, common charges and what is coming next, from offering plans and deeds.
New Condos by Area
The Financial District Condo Market
$1,838 median Financial District new condo closing per square foot, last five years
What new Financial District condos sell for, by bedroom and year, how slowly the big towers sell out and what is coming next, from offering plans and deeds.
New Condos by Area
The Lower East Side Condo Market
$1,720 median Lower East Side new condo closing per square foot, last five years
What new Lower East Side condos sell for, by bedroom and year, how fast buildings sell out and what is coming next, from offering plans and deeds.
New Condos by Area
The Ridgewood Condo Market
$824 median Ridgewood new condo closing per square foot, last five years
What new Ridgewood condos sell for, how fast buildings sell out, common charges and what is coming next, from offering plans and deeds.
New Condos by Area
The Williamsburg Condo Market
$1,535 median Williamsburg new condo closing per square foot, last three years
What new Williamsburg condos sell for, by bedroom and year, how fast buildings sell out, common charges and what is coming next, from offering plans and deeds.
Costs & Budgets
The Sponsor's Condo-Creation Fee in NYC
34% of Brooklyn condo plans charge buyers for the sponsor's condo-creation costs
Some NYC offering plans make buyers pay the sponsor $1,000 to $15,000 at closing for the cost of creating the condominium. We counted how often it shows up.
New Condos by Area
New Brooklyn Condos, From the Offering Plans
275 Brooklyn condo offering plans accepted in two years
Every Brooklyn condo offering plan the AG accepted in the last two years: how many homes, which neighborhoods, asking price per square foot and common charges.
New Condos by Area
Small Brooklyn Condos Under 10 Units
116 small Brooklyn condo plans filed in 2026
Every Brooklyn condo offering plan for a building with fewer than 10 homes filed with the NY Attorney General in 2026: address, neighborhood, homes and status.
New Condos by Area
New LIC Condos Filed in 2026
4 Long Island City condo plans filed in 2026
Every Long Island City condo offering plan filed with the NY Attorney General in 2026: address, homes, filing date and whether the AG has accepted it yet.
New Condos by Area
The Bushwick Condo Market
$1,007 median Bushwick new condo closing per square foot, last three years
What new Bushwick condos sell for, how prices changed, typical building size, finishes, amenities and subway walks, from offering plans and deed records.
New Condos by Area
The East Williamsburg Condo Market
7 months typical time for an East Williamsburg condo building to sell out
East Williamsburg condo prices, building sizes, finishes, amenities and subway walks: every offering plan near the Graham Av and Grand St L stops.
New Condos by Area
The Long Island City Condo Market
$1,456 median Long Island City new condo closing per square foot, last three years
What new Long Island City condos sell for, how LIC prices changed, how fast buildings sell out, unit sizes, amenities and subway walks, from offering plans and deed records.
New Condos by Area
The Astoria Condo Market
$1,195 median Astoria new condo closing per square foot, last three years
What new Astoria condos sell for, how prices changed, how fast buildings sell out, unit sizes, amenities and the walk to the N and W, from offering plans and deed records.
New Condos by Area
The Carroll Gardens Condo Market
$1,799 median Carroll Gardens new condo closing per square foot, last three years
What new Carroll Gardens condos sell for, how prices changed, building size, finishes, amenities and subway walks, from offering plans and deed records.
New Condos by Area
The Upper East Side Condo Market
$2,242 median Upper East Side new condo closing per square foot, last three years
What new Upper East Side condos sell for, how UES prices changed, how long buildings take to sell out, unit sizes, amenities and the Q vs. the 6, from offering plans and deed records.
New Condos by Area
The Greenpoint Condo Market
$1,424 median Greenpoint new condo closing per square foot, last three years
What new Greenpoint condos sell for, how prices changed, how fast buildings sell out, unit sizes, features and the walk to the G, from offering plans and deed records.
New Condos by Area
The Flushing Condo Market
$1,009 median Flushing new condo closing per square foot, last three years
What new Flushing condos sell for, how prices changed, how long buildings take to sell out, unit sizes, parking and the walk to the 7, from offering plans and deed records.
Finishes & Features
How Soundproof Are New NYC Condos?
What soundproofing new NYC condos promise: STC and IIC ratings, floor underlayments, wall assemblies and windows, from offering plans filed since 2021.
Costs & Budgets
NYC Condo Insurance Costs Are Rising
59% rise in insurance per unit per year, like for like, 2020–22 to 2025–26 plans
How much NYC condo budgets set aside for building insurance per unit per year, like for like, from the first-year budgets in offering plans since 2015. What's driving it.
Finishes & Features
Do Herringbone Floors Cost More in NYC Condos?
Which new NYC condos have herringbone or chevron wood floors, how common they are, and what those buildings ask per square foot, from NYC condo offering plans.
Finishes & Features
Do Marble Counters Cost More in NYC Condos?
Marble, quartz, quartzite or granite? What kitchen counters new NYC condos specify, how that has changed, and what marble-kitchen buildings ask per square foot.
Prices & Value
New 1-Bedrooms Near the Subway, by Budget
55% of recent one-bedroom sales in new NYC condos were within a 5-minute walk of the subway
Where to find a new NYC condo one-bedroom within a 5-minute walk of the subway at $700K, $1M and $1.5M, from recorded sales: buildings, stations, prices and sizes.
Prices & Value
Do NYC Condos Near the Subway Cost More?
9% the most a longer walk to the subway moved price per square foot within the same neighborhood
Do NYC condos close to the subway sell for more? We matched new-condo sales to each building's walk to the train. The answer: mostly it's the neighborhood, not the walk.
Costs & Budgets
Condo Supplies Cost per Unit, by Size
$190 per unit a year for building supplies in a typical new NYC condo budget
Building supplies, repairs, management, staff and elevator costs per unit per year in new NYC condo budgets, by building size, from offering plans.
Costs & Budgets
Condo Utilities Cost per Unit, by Size
$1,470 per unit a year for a typical new NYC condo's building utilities
Common-area electricity, gas, heat and water per unit per year in new NYC condo budgets, by building size, from offering plan Schedule B budgets.
Costs & Budgets
Elevator Maintenance Cost in NYC
$5,000 a year to maintain one elevator in a typical new NYC condo budget
What NYC condos budget to maintain an elevator: per elevator per year, Manhattan vs. Brooklyn vs. Queens, and one elevator vs. two, from Schedule B budgets.
Finishes & Features
The 5 Most Unusual Condos in NYC
A bird protection fund, a synagogue, a pool in a seminary hall, a recording studio and a rented pool: five NYC condos with unusual features, from their plans.
Finishes & Features
Gas vs. Induction Stoves in New NYC Condos
41% of NYC condo plans filed in 2025 specify a gas cooktop
Gas cooktops went from nearly universal in NYC condo offering plans to a minority of plans filed in 2025. What's replacing gas, and what buyers should check.
Finishes & Features
How New NYC Condos Heat and Cool
93% of NYC condo plans filed since 2024 heat and cool with heat pumps
Most new NYC condos now heat and cool with electric heat pumps, and more and more bring in fresh air through an ERV. What each system means for comfort and costs.
Finishes & Features
Do New NYC Condos Include a Washer/Dryer?
38% of NYC condo plans provide washer/dryer hookups only, no machines
Almost every new NYC condo has in-unit laundry, but in small buildings many come with hookups only, no machines. And ventless dryers now outnumber vented ones.
Finishes & Features
In-Unit Water Heaters in NYC Condos
65% of NYC condo plans filed since 2024 put a tank water heater in each apartment
Most new NYC condo plans now put a tank water heater in each apartment, where a central boiler used to be the norm. Here's what that means for space, bills and repairs.
Finishes & Features
Walk-Up Condos: NYC's No-Elevator Buildings
42% of NYC condo plans filed since 2023 have no elevator
A growing share of new NYC condo plans are walk-ups with no elevator. Where they are, why they're growing, and what you save in common charges.
Costs & Budgets
Which NYC Condo Utilities Are in Common Charges?
83% of NYC condo plans that say who pays for heat leave it to owners
In NYC condos, water and common-area electric are in common charges, while your apartment's electric almost never is. Heat and gas depend on building size. What the offering plans say.
Costs & Budgets
The Condo Working Capital Contribution
Most NYC condo offering plans ask buyers to pay two months of common charges into the working capital fund at closing. What it is and how much to budget.
Costs & Budgets
Does Your New Condo Have a Reserve Fund?
92% of budgets accepted since 2022 include a reserve line
How many NYC condo budgets include a reserve line, how big it typically is as a share of the budget and per apartment, and why big buildings set aside a smaller share.
Costs & Budgets
The 421-a Tax Break Is Fading From NYC Condos
421-a once cut property taxes in hundreds of new NYC condos. Since the program closed to new projects in 2022, far fewer condo plans claim it. What buyers should know.
Finishes & Features
NYC Condo Kitchen Appliance Brands by Price
Frigidaire and GE lead in NYC condos under $1,000 a square foot, Bosch in the middle, and Sub-Zero, Miele and Gaggenau at $2,500+. What recent offering plans specify.
Costs & Budgets
How a NYC Condo Property Tax Estimate Works
How a new NYC condo's offering plan estimates your property taxes: market value, the 45% assessment, the tax rate, abatements, and when the number can jump.
Costs & Budgets
Condo Insurance vs. Homeowners Insurance in NYC
What a NYC condo's master policy covers, what it leaves to you, and why you need an HO-6 policy instead of homeowners insurance, from recent offering plans.
Finishes & Features
Bathroom Brands in NYC Luxury Condos
Which bathroom brands NYC's priciest new condos use, what really separates a luxury bath, and why the brand in the offering plan isn't guaranteed.
Prices & Value
The NYC Luxury Condos That Sold Fastest
Which NYC luxury condo buildings sold out fastest, from offering plans and city closing records, and what a quick sellout tells you as a buyer.
Developers & Firms
NYC Condos That Beat Their Price List
61% of 413 buildings closed below their original Schedule A price list in total
Which NYC new condo buildings closed furthest above the sponsor's original Schedule A prices, from offering plans and city deed records, and what it means when you buy new.
Finishes & Features
How NYC Condo Finishes Changed Since 2010
What a $1,000-$1,300/sf NYC condo comes with now vs. 2010: heat pumps, ventless dryers, electric stoves, quartz counters, and what it means for buyers.
Finishes & Features
The Appliance Brands NYC Condos Use
81% of 1,725 new-construction condo offering plans name at least one appliance brand
We read NYC condo offering plans to see which kitchen and laundry brands sponsors promise, from Bosch and Miele to Sub-Zero and Wolf, and what to check before you buy.
Prices & Value
NYC Condo Outdoor Space: Who Gets It
Which NYC condo apartments get private terraces, gardens and roof decks, what outdoor space adds to the price, and the rules that come with it.
Finishes & Features
Condo Backyards: What Do You Own?
Ground-floor and garden condos in NYC: whether the yard is part of your unit or a limited common element, and what offering plans say about plantings, grills, hot tubs, drains and fences.
Costs & Budgets
Why NYC Condo Operating Costs Differ
Why two NYC condos of the same size can have very different common charges: staff, heating, amenities, insurance and management, and how to compare them.
Developers & Firms
Brooklyn's Boutique Condo Architects
Who designs Brooklyn's small condo buildings? The architects named most often in boutique condo offering plans, where they build, and what their buildings cost.
Finishes & Features
Condo Parking: Deeded Space vs. License
Buying a NYC condo with parking? Learn the difference between a deeded parking unit, a license and a garage rental, what they cost, and what to ask before you sign.
Finishes & Features
Condo Storage: Bought, Licensed or Included?
In an NYC condo, a storage room can be a deeded unit, a license you buy from the sponsor, space tied to your apartment, or a free bin. What offering plans say and what storage costs.
Finishes & Features
Who Pays to Replace Condo Windows?
In an NYC condo, are the windows yours or the building's? What offering plans say about who pays for replacement, board approval, Landmarks rules and facade work.
Finishes & Features
What You Get in a Small NYC Condo Building
76% of new NYC condo buildings have 30 homes or fewer
Which amenities small NYC condo buildings actually include, from bike rooms to gyms and doormen, read from their offering plans, and what staff adds to common charges.
Costs & Budgets
Where Do NYC Condo Common Charges Go?
$31 of every $100 in common charges goes to insurance and water in a typical new NYC condo
Out of every common charges dollar in a new NYC condo, how much pays for staff, insurance, water, repairs, management and reserves, from offering plan budgets.
Prices & Value
Boutique vs. Tower Condos in Brooklyn
Small Brooklyn condo buildings vs. large ones, from the offering plans and city deed records: price per square foot, home sizes, common charges, taxes and how fast they sell.
Prices & Value
What Makes a Manhattan Condo Luxury?
2,980 sq ft typical home in the priciest group of new Manhattan condos, against 1,330 in the lowest
What a higher price per square foot buys in a new Manhattan condo: home size, bedrooms, outdoor space, common charges, staff and the brands named in the offering plans.
Developers & Firms
Do NYC Developers Rehire the Same Firms?
77% of developers' later projects rehired an earlier offering plan attorney, against 14% by chance
How often NYC condo developers go back to the same architect, offering plan attorney, property manager and sales team, measured across their offering plans and tested against chance.
Costs & Budgets
How Much Should NYC Condo Common Charges Be?
$9,400 average first-year budget per unit per year, across 640 plans accepted since Oct 19, 2021
NYC condo common charges benchmarks by borough and building size, from the first-year Schedule B budgets in recent offering plans. When low is a red flag.
Costs & Budgets
What a New NYC Condo Spends in Year One
$9,400 average first-year operating budget per residential unit, across 640 recent plans
Where a new NYC condo's first-year budget goes, from recent offering plan Schedule Bs: insurance, water, staff, management and reserves, by building size.
Filings & Approvals
How Long Does AG Condo Plan Approval Take?
234 days average from submission to AG acceptance, across the 100 most recent plans that can be timed
How long the NY Attorney General takes to accept a NYC condo offering plan, from the most recent plans: average time, the slow quarter, and what makes a plan slow.
Filings & Approvals
NYC Condo Plans Filed Each Year
682 NYC plans accepted in 2006, the busiest year on record
How many NYC condo offering plans has the NY Attorney General accepted each year? Counts by year, borough and construction type from The Condo Book Project's plan records, kept up to date.
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