Cobble
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Everything it takes to run your co-op.

Cobble helps the volunteer boards of small NYC co-ops run their own buildings — compliance, documents, city records and projects in one place. Built to make your board more capable, not more dependent.

  • Building records — valuation, abatements, HPD-registered contacts
  • Open city issues — HPD / DOB violations, ECB fines, 311 complaints

Rather look around first? Try the chat on a sample Brooklyn co-op.

Open the demo
Building recordON FILE

47 Maple Court

Park Slope, Brooklyn · BBL 3-00954-0021

1910
Built
24
Units
Co-op
Class
  • HPD registrationCurrent
  • Boiler inspectionDue in 12 days
  • Open DOB violationsNone
  • DOF market value$4.2M
A sample record — enter your address to build your building's.

What we already know

Your building, already pulled together.

Cobble reads what the city publishes — records, units, owners, open issues — so your board opens to the full picture instead of a blank page. It all comes from a single address, and getting started is free.

  • City records

    Year built, units, class and BBL, straight from the city.

  • People & units

    Owners and residents, from ACRIS deeds.

  • Compliance & deadlines

    Every filing mapped to your building, with due dates.

  • Open city issues

    HPD and DOB violations, ECB fines and 311, flagged.

Compliance & contractors

Never miss a filing. Always know who to call.

Every annual deadline mapped to your building, with plain-English action steps for each. Mark items done as you go. Walk into your next board meeting with the receipts.

And the contractors you used? Logged, with visit history, spend, and which task they served. Next year's board knows exactly who to call.

Next up

Due in 12 days

Boiler Annual Inspection

DOB-required annual inspection of low-pressure boiler systems. File the report after inspection.

Last year: Hot Stuff Heating — $1,420.75 on 2025-05-08
and reach Hot Stuff Heating from last year

Also coming up

  • HPD Property Registration

    HPD · Sarah (Treasurer)

    Due Sep 1

  • Window Guard Annual Notice

    HPD · Managing agent

    Due Jan 16

  • LL84 Energy Benchmarking

    DOB · Unassigned

    Due May 1

  • Federal 1120-C + NY CT-3

    IRS / NYDTF · Your CPA

    Due Mar 15

Documents

Drop in everything. We make it useful.

Bylaws, proprietary lease, prospectus, board minutes, contractor invoices — any format, scanned or born-digital, hundreds of pages. We extract every word, auto-classify each document, and turn the pile into a searchable, citable knowledge base.

400-page prospectus as a scanned PDF? No problem — our OCR reads it cover to cover.

Document library

2019 Offering Plan.pdf

412 pages · 87 MB · OCR'd in 47s

CoreAuto-extracted units (24)

Bylaws — Amended 2022.docx

38 pages · indexed for chat

Core

boiler_repair_invoice_2024-03.pdf

2 pages · $1,256.89 · boiler service

InvoiceVendor: Hot Stuff Heating

Board Meeting — Feb 2026.pdf

12 pages · 6 action items pulled

Minutes

Ask

Answers that show their work.

Ask anything about your co-op in plain English. Every answer arrives with citations to the exact passage — section, verbatim quote, the source doc — so your board can verify before relying on it.

No hedging. No “I think the bylaws say…” No more board members giving conflicting answers from memory.

Does a shareholder need board approval to redo their bathroom?

Yes — for the parts that touch plumbing, electrical, or load-bearing walls. Your proprietary lease requires written board approval before any alteration that affects building systems or structure. Cosmetic-only work (tile, vanity, fixtures swapped at existing connections) doesn't need a vote, but the shareholder must still notify the managing agent in advance.

Most boards also require an alteration agreement, COI from the contractor, and a $500 refundable deposit.

From your documents

  • CoreProprietary Lease §11 — Alterations

    “No alteration of, addition to or change in the Apartment shall be made without the prior written consent of the Lessor.”

  • AmendmentsHouse Rules — Section IV (2022 update)

    “Shareholders performing cosmetic work must notify the managing agent at least five business days in advance.”

  • MinutesMarch 14, 2024 board meeting

    “Standard alteration package: board approval, alteration agreement, COI naming the corporation, $500 refundable deposit.”

Capable, not dependent

You run your building. We make the work obvious.

A management company keeps the know-how to itself, so the board stays dependent and the bills keep coming. Cobble works the other way around: it lays the whole job out in plain English, so your board can handle it — and hand it cleanly to whoever's on the board next.

We're not your manager, your accountant, or your bank. We're the part that makes the rest learnable.

See your building's record.

Drop your address — we'll have a dashboard ready in under a minute, with your unit data, building records and compliance timeline.