Property report

321-23 Chestnut St

84,410 sqft · CMX4 · built 1840

Museum · Borowsky Irvin J Tr · tax-exempt. On the 300 block of Chestnut St.

Street view of 321-23 Chestnut St — From the street — imagery © Google

From above — imagery © Esri, Maxar

Property summary

Assessment$12MCity assessed value Last sale$725KRecorded 1996 Est. annual tax$0/yearTax-exempt assessment Tax delinquency—Snapshot unavailable Permits7Shown in this report ViolationsNone openNo open L&I cases

What stands out

From the public record

Finding

New construction

Why it matters

built new under a 2021 permit (tax-abated).

View supporting records →

Not a houseProperty report

This is a museum, not a home, and it pays no property tax. BlockReport's value, tax and investment tools are for residential parcels, so they're hidden here. The full public record is still below, and the analyst can answer anything about it.

What it is

Museum

Misc Museum Masonry

Owner

Borowsky Irvin J Tr

Public / institutional

Tax standing

Tax-exempt

Pays no property tax

$ / sq ft

$143

above the $130 median for 12,035 commercial parcels citywide

Corridor

Old City

city commercial corridor

Assessed value

$12M

City market value

Interior area

84,410 sqft

Lot size

5,874 sqft

Built

1840

Zoning

CMX4

Block context

321-23 Chestnut St sits on the 300 block of Chestnut St. Open the block report to compare its parcels, ownership and public-record history.

See the whole block →

Next door: 325-41 Chestnut St · 305 Chestnut St

Where this comes from

Assessment, spec sheet & owner — OPA Property Assessments, Office of Property Assessment
Sales & deed history — Realty Transfer Tax records, Recorder of Deeds
Permits, violations & inspections — L&I Property History · Atlas
Tax delinquency snapshot · June 2022 — Real Estate Tax Delinquencies, Dept. of Revenue
Historical tax ledger & liens · through 2016 — Real Estate Tax Balances, Dept. of Revenue
Current property-tax balance — Verify with Philadelphia Revenue
Zoning appeals — L&I & Zoning Board appeals
Neighborhood income & rents — US Census ACS 5-year estimates
Historical mortgage rates — Freddie Mac Primary Mortgage Market Survey, annual averages

Methodology & freshness

Available City datasets are queried from OpenDataPhilly (phl.carto.com), then reports are cached and refreshed on a rolling schedule. Source dates vary: the parcel-level tax-delinquency snapshot is June 2022 and the separate detailed tax ledger ends in 2016, so neither establishes today’s balance. Other dossiers re-pull on view once stale, and citywide benchmarks recompute weekly. AI-written passages are generated from these records only and rejected if they state a number the record doesn't hold.

BlockReport AICited sources

Ask a cited due-diligence question about this property. BlockReport connects the public record - deeds, permits, violations, taxes, ownership, and comparable context - then explains what matters. Try 3 deep research questions with no card or account required.

About this data & fine print

Answers are generated by an AI agent querying available City of Philadelphia open data at the moment you ask: OPA property assessments, Recorder of Deeds transfer records, L&I permits, violations & licenses, dated Dept. of Revenue tax records, Zoning Board appeals, Police incident reports, Philly311 requests, and School District of Philadelphia catchment and school data.

For an explicit web search or a current listing/news question, the agent may also search the public web through OpenRouter and must link every web-derived claim. Public listing pages can be stale and are not direct or comprehensive MLS access.

Property-level tax data is historical: the delinquency snapshot is dated June 2022 and the separate detailed ledger ends in 2016. Neither shows what is owed today; verify a current balance with Philadelphia Revenue.

City data is published as-is and can lag, contain errors, or be corrected later; school performance datasets run years behind and are labeled with their school year. AI answers can contain mistakes — verify anything that matters against the official record (property.phila.gov, atlas.phila.gov) before acting on it.

Informational only. Not legal, financial, or investment advice. Not a consumer report under the FCRA — it may not be used to decide anyone's eligibility for housing, tenancy, employment, credit, or insurance.

Official city record ↗ · L&I history ↗ · See the whole block · Download this record (JSON)