dreamlab-ai /nyc-acris — ACRIS Property Transaction Records
Look up ACRIS (Automated City Register Information System) property records — deeds, mortgages, liens, and other recorded documents. Uses a 3-table join across Legals, Master, and Parties datasets. No API key required.
Usage
/nyc-acris 120 Broadway, Manhattan
/nyc-acris 1000770001 (BBL)
/nyc-acris 1001389 (BIN)
Step 1: Parse Input
Accept one of:
- Address + Borough/Zip — "120 Broadway, Manhattan" or "120 Broadway 10271"
- BBL — 10-digit number (boro 1 + block 5 + lot 4)
- BIN — 7-digit Building Identification Number
Borough codes: Manhattan=1/MN, Bronx=2/BX, Brooklyn=3/BK, Queens=4/QN, Staten Island=5/SI
Step 2: Resolve via PLUTO
Query PLUTO to get BBL, BIN, and building metadata. No API key needed.
By BBL:
https://data.cityofnewyork.us/resource/64uk-42ks.json?bbl={BBL}
By address:
https://data.cityofnewyork.us/resource/64uk-42ks.json?$where=upper(address) LIKE '%{STREET}%'&borough='{BORO_CODE}'&$limit=5
Address normalization: Uppercase, strip unit/apt suffixes. Borough names to codes: Manhattan=MN, Bronx=BX, Brooklyn=BK, Queens=QN, Staten Island=SI. If multiple results, ask the user to pick. If zero, try variations or suggest providing a BBL.
Store from PLUTO: bbl, bin (or bldgbin), address, borough, bldgclass, zonedist1, yearbuilt, ownername, numfloors, lotarea, latitude, longitude.
Parse BBL into separate components (required for ACRIS): boro = digit 1, block = digits 2-6 (zero-padded), lot = digits 7-10 (zero-padded).
Step 3: Query ACRIS (3-Table Join)
IMPORTANT: ACRIS requires BBL (not BIN). The Legals table uses separate borough, block, lot fields — not a combined BBL field.
Step 3a: Get Document IDs from Legals Table
https://data.cityofnewyork.us/resource/8h5j-fqxa.json?borough={boro}&block={block}&lot={lot}&$order=good_through_date DESC&$limit=20
Extract document_id from each row. These are the join keys for the next two queries.
Step 3b: Get Document Details from Master Table
Build a $where clause with the document_ids from Step 3a:
https://data.cityofnewyork.us/resource/bnx9-e6tj.json?$where=document_id IN ('{id1}','{id2}','{id3}',...)&$order=doc_date DESC
Key fields: document_id, record_type, crfn, doc_type, doc_date, doc_amount, recorded_filed
Step 3c: Get Parties from Parties Table
Same document_ids:
https://data.cityofnewyork.us/resource/636b-3b5g.json?$where=document_id IN ('{id1}','{id2}','{id3}',...)
Key fields: document_id, party_type, name, address_1, city, state, zip
Party types: 1 = Grantor (seller/borrower/assignor), 2 = Grantee (buyer/lender/assignee)
Step 3d: Look Up Document Type Codes
Fetch once to translate doc_type codes to descriptions:
https://data.cityofnewyork.us/resource/7isb-wh4c.json?$limit=200
Common codes: DEED, MTGE (Mortgage), AGMT (Agreement), ASST (Assignment), SAT (Satisfaction), RPTT (Transfer Tax), ALIS (Assignment of Leases), UCC1 (UCC Filing), MCON (Mortgage Consolidation)
Joining the Data
For each document_id:
- Get date, type, and amount from Master
- Get grantor(s) and grantee(s) from Parties
- Translate doc_type code using the codes table
- Group by document type category
Step 4: Print Results
## Property Records (ACRIS) — {Address}
**BBL:** {bbl} (Borough {boro}, Block {block}, Lot {lot})
**Documents found:** {count} (showing 20 most recent)
### Deeds (Ownership)
| Date | Doc Type | Amount | From (Grantor) | To (Grantee) |
|------|----------|--------|----------------|--------------|
| YYYY-MM-DD | Deed | $X,XXX,XXX | ... | ... |
**Current owner (per most recent deed):** {grantee name}
### Mortgages
| Date | Amount | Lender (Grantee) | Borrower (Grantor) |
|------|--------|-------------------|---------------------|
| YYYY-MM-DD | $X,XXX,XXX | ... | ... |
### Other Documents
| Date | Doc Type | Amount | Grantor | Grantee |
|------|----------|--------|---------|---------|
| ... | Assignment | ... | ... | ... |
**Note:** Condo units may have records on both the unit lot and the parent condo lot. If results seem incomplete, try querying the main condo lot as well.
Source: [ACRIS Real Property](https://data.cityofnewyork.us/City-Government/ACRIS-Real-Property-Master/bnx9-e6tj)
If no documents found: "No ACRIS records found for this property."
Conventions
- All dates: YYYY-MM-DD
- Dollar amounts: comma-separated ($1,234,567)
- Limit to 20 most recent documents. Note if truncated.
- If Socrata returns empty array: "No results found"
- If HTTP error: note it and suggest checking the address
- If the user requests, write results to a file