How to read and verify a property report

1. Confirm the parcel

Before reading a price or owner name, write down the full address, borough, block and lot. Compare those fields with the record you are opening. A matching street name alone is not enough.

ACRIS supports borough-block-lot (BBL) and address research. For building records, also check the building identifier (BIN) in the DOB building search. Keep the parcel, building and any unit designation separate in your notes.

2. Classify the evidence

For each material statement, ask which of these descriptions fits:

• Source fact: a named record contains a particular value, date or status. Preserve the field label and record identifier. This establishes what the source says; conflicting records still need review.
• Derived calculation: a value computed from inputs. Check both the inputs and the arithmetic. Dividing a price by floor area only helps if the price and area describe the same property.
• Estimate: a modeled result or an assumption. Look for its date, method and missing inputs. Do not present estimated debt as a lender-confirmed balance.
• Unavailable or unresolved: the answer has not been established. A blank field, timed-out source or limited result set does not establish a zero.

Availability and accuracy answer different questions. A source can return a value for the wrong parcel, or return a correct value that is too old for your question. Neither a populated report nor a high count of returned records is an accuracy score.

Keep value labels intact. The Department of Finance explains market, assessed and taxable values as distinct parts of its property-tax process. A tax assessment, a report estimate, an asking price and recorded consideration are different observations.

3. Check the dates

Note three dates separately: when the underlying event happened, when the source recorded or published it, and when you retrieved it. An assessment also needs its tax year and roll status. A report generated today can contain older source records.

Our worked mortgage record below has a document date of January 21, 2014 and a recording date of February 3, 2014. Those are both useful, but they answer different questions. Keep the source’s date label when you build a timeline.

Before comparing a count, check its scope: which parcel or building, which agency, which date range, and which statuses? DOB directs researchers to BIS and DOB NOW for building history. HPD Online has its own housing complaints, violations and registration information. A result from one agency is not a count of every agency’s records.

4. Trace a recorded mortgage

The question: Does an old $384,000 mortgage entry mean this property owes $384,000 today?

This example uses selected ACRIS index rows for 5112 Avenue N, Brooklyn, BBL 3-07896-0044, checked October 2, 2026. It is a fixed teaching example, not a current title or debt report.

1. The mortgage row, CRFN 2014000041189, shows document amount $384,000 and recording date February 3, 2014.
2. The satisfaction row, CRFN 2024000028043, was recorded February 1, 2024.
3. The satisfaction’s reference row explicitly names mortgage CRFN 2014000041189. The link comes from that identifier, not merely from two records appearing near each other.
4. The mortgage parcel row and satisfaction parcel row both identify borough 3, block 7896, lot 44.

Still unresolved: these selected rows do not establish the property’s complete lien history, current owner or total outstanding debt. Review the document images and broader parcel history in ACRIS; obtain current lender or title evidence when the decision requires it. Do not turn one linked satisfaction into “the property is debt-free.”

5. Verify your conclusion

For a disputed field, make a short evidence note that someone else can reproduce:

1. Question: what exact fact are you trying to establish, for which parcel or unit?
2. Source: which agency, record identifier and original field support it?
3. Timing: what event date, source year and retrieval date apply?
4. Scope: did you examine all relevant results, or a limited selection?
5. Conclusion: what is supported, what is estimated, and what remains unresolved?

If sources conflict, retain both values and their context. Check identity and dates before choosing between them. Save the source link and the exact record you used, then route the unresolved question to the agency or appropriate professional. This research workflow does not replace legal, title, valuation or engineering review.

Try it yourself

Illustrative exercise: a report shows the $384,000 mortgage above, its linked satisfaction, and no returned HPD rows. Which conclusions can you defend?

• A. The property is debt-free.
• B. The selected index includes a satisfaction referencing the 2014 mortgage.
• C. The property has never had a housing violation.