Property report

240 S 20th St

17,018 sqft · RM1

School · Dennis J Dougherty · tax-exempt. On the 200 block of S 20th St.

Property summary

Assessment$6.9MCity assessed value Last sale—No sale value available Est. annual tax$0/yearTax-exempt assessment Tax delinquency—Snapshot unavailable Permits6Dated events in report ViolationsNone openNone open when assembled

Report assembled Jul 9, 2026 “Open” reflects records available then historical records keep their source dates estimates are labeled

BlockReport AI · cited public records

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Street view of 240 S 20th St — From the street — imagery © Google

From above — imagery © Esri, Maxar

What stands out

From the public record

Finding

New construction

Why it matters

built new under a 2024 permit (tax-abated).

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Records to verify together

Rule-based groupings across this property's dated public records. Each flag shows the records that belong in the same verification step and where the inference stops.

Dated record flagRecent transition activity

The property has an unusually active paper trail worth monitoring for the next permit, inspection, deed, or listing.

Evidence: 6 permit events since 2023

Limit: Record activity alone does not establish that a sale or redevelopment is planned.

Transparent record rules, not a score or forecast. Each flag is a prompt to verify the cited records, not a prediction or allegation.

Not a houseProperty report

This is a school, 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

School

School 4 Sty Masonry

Owner

Dennis J Dougherty

Public / institutional

Tax standing

Tax-exempt

Pays no property tax

$ / sq ft

$408

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

Corridor

Market West

city commercial corridor

Assessed value

$6.9M

City market value

Interior area

17,018 sqft

Lot size

7,700 sqft

Zoning

RM1

Block context

240 S 20th St sits on the 200 block of S 20th St. Open the block report to compare its parcels, ownership and public-record history.

See the whole block →

Next door: 238 S 20th St · 242 S 20th 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 about this commercial property across deeds, permits, violations, dated taxes, ownership, and comparable context. Curated questions are free; ask 3 custom questions per browser. Analyst includes up to 150 custom questions per day.

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)