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The Condo Book Project, inside your AI.
We brought The Condo Book Project to where you already work. Connect to Claude or ChatGPT to give your AI access to 800,000+ pages of condo filings, covering building costs, construction specs, leasing rules, recorded sales, & more.
You ask your assistantAny question about a NYC condo, in your own words.
It calls the connectorThrough MCP, the standard way AI assistants reach outside data. Read-only.
We look it upIn the offering plans and ACRIS deeds, with the source page for each figure.
You get a cited answerThen follow up, compare buildings, or turn it into a memo or comp sheet.
On-Call NYC Condo Expert
Your AI. Better informed.
What your AI can do depends on what it knows. Listings, marketing sites, and news tell only part of the story. The Condo Book Project connects it to the depth of information in NYC condo offering plans and recorded deeds. So you spend less time doing the research yourself.
Which NYC condos use Gessi fixtures?
✕Without The Condo Book Project
These four NYC condo developments explicitly name Gessi in their published finishes or sales materials:
| Condo | Gessi fixtures specified |
|---|---|
| Paragon, 45-40 Vernon Blvd | Brushed-nickel kitchen and bathroom fixtures |
| Parc Beaufort, 140 W 57th St | Warm-bronze fittings in primary bathrooms |
| Williamsburg Green, 28 Herbert St | Bathroom fixtures, including primary en-suite baths |
| RoseBK, 207 North 8th St | Kitchen and bathroom fixtures; the Gessi Anello collection in warm bronze |
This is a confirmed shortlist, not an exhaustive citywide inventory. Specifications can vary by residence.
compass.combhsusa.comCompass +1
✓With The Condo Book Project
6 offering plans name Gessi in their finish schedules, from TriBeCa to Williamsburg:
| Building | Gessi for | Plan |
|---|---|---|
| Parc Beaufort, 140 W 57th St | Shower head and controls | p. 379 |
| 185 Skillman Avenue | Shower, “Kohler and/or Gessi” | p. 212 |
| Williamsburg Green, 28 Herbert St | Lavatory faucet | p. 232 |
| 207 North 8th Street | Shower system | p. 210 |
| 249 East 50th Street | Faucet | p. 249 |
| 70 Vestry | Faucets, “or equivalent” | p. 322 |
These are the plans that commit to Gessi; two say “or similar” or “or equivalent.” Paragon markets Gessi in its listings, but its offering plan doesn’t name the brand.
Offering plan finish schedules
✕Without The Condo Book Project
The Florian’s advertised common charges look relatively low; its taxes are broadly comparable to nearby newer condos. Here’s a comparison using two-bedroom apartments, adjusted for size:
| Example unit | Charges /mo | Taxes /mo | Combined /SF |
|---|---|---|---|
| The Florian, 5A | $1,414 | $1,913 | $2.70 |
| 200 East 20th, 12B | $1,867 | $1,983 | $2.90 |
| 200 East 21st, 10A | $1,914 | $2,168 | $2.86 |
| 234 East 23rd, 7C | $1,557 | $1,957 | $3.43 |
The key qualification: these are advertised figures from listings of different dates. They don’t establish that taxes reflect the same assessment stage or abatements, or that common charges include identical services.
StreetEasy +3
✓With The Condo Book Project
Common charges are the lowest of its 10 peers, and taxes are 34% under the peer median.
| $/SF/month | Charges | Taxes |
|---|---|---|
| The Florian | $1.18 | $1.33 |
| The Village West | $1.72 | $1.78 |
| 517 West 29th | $1.40 | $2.36 |
| Peer median | $1.65 | $2.01 |
Schedule A, pp. 44–45Condo Book peer set
✕Without The Condo Book Project
Yes—Paragon at 45-40 Vernon Boulevard is advertised as allowing pets, consistent across its sales listings and building profile.
I couldn’t verify specific dog restrictions, such as breed, weight, number of pets, or approval requirements. Confirm those in the condominium’s house rules before committing.
✓With The Condo Book Project
Yes, dogs and cats are allowed. The rule, word for word:
"No birds, animals or reptiles, except dogs or cats, shall be permitted in any Unit unless the same shall have been expressly permitted in writing by the Board of Managers or the Managing Agent…"
That permission can be revoked; service, therapy and emotional support animals are excepted.
✕Without The Condo Book Project
Bosch is a strong candidate for the most common brand, but I can’t verify a neighborhood-wide No. 1 from public listings alone. It appears across several LIC condo developments:
| Building | Where Bosch appears |
|---|---|
| Paragon | Kitchen packages in some residences; other homes use Gaggenau |
| Skyline Tower | Dishwashers within a mixed-brand kitchen package |
| Hero LIC | Washers and dryers; kitchens use Liebherr and Blomberg |
| The Baker House | Kitchen appliances |
A defensible ranking needs a defined construction period and consistent building-by-building counts.
Developer and sales-team specifications
✓With The Condo Book Project
Bosch, by a wide margin. Of the 129 Long Island City offering plans that name a kitchen appliance brand, 55 specify Bosch, more than twice the next brand:
| Brand | Plans |
|---|---|
| Bosch | 55 |
| Frigidaire | 26 |
| GE | 23 |
| Bertazzoni | 22 |
| Blomberg | 17 |
Counted across refrigerators, dishwashers, ovens and cooktops, once per plan.
129 offering plansKitchen finish schedules
✕Without The Condo Book Project
- Refrigerator: Sub-Zero, according to the Douglas Elliman listing on StreetEasy. It also lists a Sub-Zero wine cooler. StreetEasy
- Working capital contribution: I couldn’t verify the amount from a source outside Condo Book. The sponsor directs buyers to the offering plan, CD24-0326, for the complete terms. I wouldn’t guess the amount. thefloriannyc.com
✓With The Condo Book Project
- Refrigerator: Sub-Zero in every apartment (DET3050CI/L), with a larger refrigerator (DET3650CI/L) in two- and three-bedroom homes.
- Working capital contribution: Two months’ common charges, payable at closing. For example, $1,000/month in common charges means a $2,000 contribution. A Complete Buy…
Real answers from an AI assistant.
Try it free.
A free account gets every lookup in Claude and ChatGPT, up to 60 a month: building details, comps, recorded sales and plan excerpts. Pro has no monthly limit.
Setup
How to connect.
A few minutes, once. Finish signing in in the same browser where you click Connect, within 15 minutes.
In Claude
About 2 minutes, on claude.ai on a computer. You'll need a Claude account.
- Open the connector. Signed in to claude.ai, open The Condo Book Project in Claude's connector directory and click Connect to Claude.
- Sign in. Sign in to your Condo Book account, by email link or Google. Use the same browser, within 15 minutes.
- Allow. Click Allow. You'll land back in Claude, connected.
- Ask a question. In a new chat, check The Condo Book Project is on under + › Connectors. Then just ask, for example “Show sales progress and pricing for 254 and 256 West 88th Street.” Claude uses Condo Book whenever a question needs it.
In ChatGPT
About 3 minutes, on chatgpt.com on a computer (not the phone app). You'll need ChatGPT Plus or Pro.
- Open Plugins. On chatgpt.com, click Plugins in the left sidebar.
- Add a custom MCP server. Click Add (top right), then Add custom MCP server.
- Fill in the form. Name: Condo Book. Server URL:
https://www.condobooknyc.com/api/mcp. Authentication: OAuth. Check I understand, then click Create as a plugin.
- Connect. Click Connect Condo Book.
- Sign in. Sign in to your Condo Book account, by email link or Google. Use the same browser, within 15 minutes.
- Allow. Click Allow. You'll land back in ChatGPT with Condo Book installed.
- Ask a question. In a new chat, type @ and pick Condo Book, then ask. Type the @ again in each new chat.
FAQ
Do I need Pro?
Not to try it. A free account can use everything in Claude and ChatGPT (building details, comparisons, recorded sales and plan excerpts) up to 60 lookups a month. A question often takes a few lookups, so that's about 10 questions. Pro has no monthly limit: see Pro. When a free account reaches its limit, the answer says so. If you subscribe after connecting, your connection picks up Pro within the hour, or right away if you disconnect and connect again.
Where do the answers come from?
They come from the same data as this site: the offering plans filed with the New York State Attorney General, and the sales recorded in ACRIS, the city’s property records. Every figure comes with its source, such as “Schedule B, pp. 83–92,” and a link to the building’s page, so you can check the original. Recorded sales never include buyers’ names. When we don’t have something, such as a building’s flood zone, the answer says so instead of guessing.
Can it change anything or see my data?
No. The connector is read-only: nothing it does can add, change or delete anything, on your account or anywhere else, and it never sees your payment details. It works only through Claude’s and ChatGPT’s official connections, and only after you sign in and choose Allow. We keep a record of each lookup, such as which tool was used and for which building, to apply usage limits.
Are there usage limits?
Yes. A free account gets 60 lookups a month (and up to 20 an hour). Pro has no monthly limit: up to 60 lookups a minute and 500 a day, which is plenty for research. The lookups behind answers in the ask box on this site count toward the same monthly total. A single question can use more than one lookup, for example when your assistant pulls up a building and then its comparable buildings.
How do I disconnect?
Remove The Condo Book Project from your connectors in Claude or ChatGPT. You can also use Disconnect under Claude & ChatGPT on your account page, which ends every connection within the hour. If you don’t use the connector for 30 days, you’ll be asked to sign in again.
What does “Access denied” or “authorization failed” mean?
It means the connection wasn’t approved: either Cancel was chosen on our Allow page, or the sign-in took too long and timed out. Click Connect again in Claude or ChatGPT, sign in, and choose Allow.
What if it says it “couldn’t reach the MCP server”?
This usually means the server URL was entered with a typo. Check that it is exactly https://www.condobooknyc.com/api/mcp, with no space or extra slash at the end, then try connecting again.
Why did it stop answering?
A free account has used its 60 lookups for the month; they come back on the 1st. Join Pro, then disconnect and connect again to use it right away.
What if the sign-in link opens somewhere else?
If the link in our sign-in email opens in a different browser or app, finish signing in there. Then go back to Claude or ChatGPT and click Connect again. Signing in works best in the same browser where you clicked Connect, within 15 minutes.
What if I’m still stuck?
Write to hello@halfave.co and tell us what Claude or ChatGPT showed, and we’ll help you get connected. You can also find more answers in our FAQ.
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See plans →Works with Claude and ChatGPT