THE CONDO BOOK PROJECT

Works with Claude and ChatGPT

The data you need.
In the AI you use.

The fastest way to know any NYC condo or co-op.
Search every offering plan in your chatbox.

Three offering plans, two questions: digging through PDFs, or just asking

They Wait on PDF's

You Just Ask

Condo Book Find the common-charge late fee and the sponsor’s attorney fee at The Brooklyn Tower, 98 Front and Front & York.
Searched 3 offering plans · 2,083 pages
BuildingLate feeSponsor attorney fee
The Brooklyn Tower$150/mo + 1.5%/mo$3,000
98 Front$150/mo + 1.5%/mo$1,500
Front & York$250/mo + 1.5%/mo$4,000

Late fees start 10 days past due. Attorney fees are the base fee. The Brooklyn Tower, p. 163

Condo Book Compare their finishes.
Read 3 finish schedules
BuildingKitchen appliancesBath fixtures
The Brooklyn TowerMieleDishwasher G5051CViWaterworksDecibel faucet ZELS71
98 FrontBoschDishwasher SHV4ATB3UCGroheFaucet 3317000A
Front & YorkGaggenauWall oven BO 480 611WaterworksLavatory faucet ZDLS03

From each plan’s finish schedule. The Brooklyn Tower, p. 232 ↗

Never download an offering plan again.
The Condo Book Project gives you the answer.

Every answer links to the page it came from.

How it works

Everyone has AI.
Yours knows more.

Connect to your Claude or ChatGPT in 2 minutes. Ask any question about any NYC condo or co-op and get the answer in 10 seconds, cited to the page. The Brooklyn Tower, p. 73 ↗

Our data

High quality insights from high quality data.

1,035,104 PDF pages across 27,996 plans & amendments covering 20,776 condos & co-ops, matched with $131.4B of ACRIS closing records.

We turned 65 years of NYC real estate history into searchable intelligence.

Case studies

Clients hire you
to be the expert.

Attorneys, property managers, vendors, developers and agents use The Condo Book Project to get facts on every NYC condo and co-op, in minutes instead of hours.

Manhattan Attorney

200+

offering plans reviewed

“Which offering plans have a 51% effectiveness clause?”

Days of paralegal review → Under 1 min

Brooklyn Property Manager

14

buildings checked at once

“What are the late fee and lien rules at my portfolio?”

Opening 14 PDFs → Under 1 min

Brooklyn Landscaping Vendor

22

NYC condo budgets with a landscaping line

“Which buildings have a landscaping budget?”

Cold-calling managing agents → A prospect list with budgets

Brooklyn Condo Developer

4 of 7

Gowanus condos accepted since 2022 specify Fisher & Paykel

“Which fridge brand do new Gowanus condos use?”

Searching comps on StreetEasy → Data-backed result

Queens Listing Agent

+10%

Mason LIC closings above Schedule A price

“How did Mason LIC’s sales compare to the Schedule A prices?”

Matching deeds by hand → Instant answer with unit breakdown

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