Land report

1000 Mount Vernon St

Property at a glanceVacant lot

612 N 10th St Homeowners

Assessment

— OPA value, not a listing price

Location

1000 block of Mount Vernon St ZIP 19123

Neighborhood area

Northern Liberties · Callowhill Approximate · based on ZIP 19123

From above · selected parcel outlined; choose a neighboring polygon to open it — imagery © Esri, Maxar

Verify the public record

Property tax

Property-tax estimate unavailable

The taxable assessment was unavailable. This is an estimate, not a bill or account balance. The City maintains payments, credits, interest, and the current amount due.

Current City balanceCheck Tax Center

Payments, credits, interest, and the current amount due are maintained by the City.

OPA 141262730

Open Philadelphia Tax Center →Use “View period balance” to inspect each tax year.

Exemption classificationExemption status unavailable

The assessment did not include a usable taxable value.

Historical delinquency sources No current conclusion

This parcel did not match the June 2022 delinquency snapshot. That absence does not confirm the account is current today.

For a purchase, refinance, or closing, request the City’s official Property Payoff statement in Tax Center under “More options.”

Land report

Vacant land

Vacant land. Deeds, ownership, zoning, and the public-source record follow.

What it is

Vacant lot Vacant Land Reside < Acre

Owner

612 N 10th St Homeowners

Lot size

280 sqft

Zoning

RSA5

Block context

1000 block of Mount Vernon St. Compare parcels, ownership, and public-record history.

See the whole block →

Next door: 1000r Mount Vernon St · 1000 Mount Vernon St

L&I license dates · data through Jul 25, 2026

Business licenses at this address Latest pull

What L&I has registered at this OPA parcel, newest initial license date first.

Open the City record ↗

No L&I business license is on record at this address in data through Jul 25, 2026.

Landlord and residential filings

These are property registrations or landlord filings, not businesses operating at this address.

SAI YING LIUInactive

Rental · Initial issue date Apr 30, 2019 · Terminal license date Jun 28, 2026

YIMENG ZHUANG & BIFENG LIUInactive

Rental · Initial issue date Apr 23, 2019 · Terminal license date Jun 21, 2026

A license is an L&I registration, not proof that a business is open, operating today, or located at this storefront. Dates are license dates. Events are deduped by parcel, business identity, and license type, so a renewal is not shown as another opening. Other permit and filing types remain in the full source ledger.

Open every source row 4 dated rows

Jun 28, 2026
License terminal eventSAI YING LIU: Rental landlord or residential registration marked inactive
License 810840 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
Jun 21, 2026
License terminal eventYIMENG ZHUANG & BIFENG LIU: Rental landlord or residential registration marked inactive
License 810051 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
Apr 30, 2019
License issue eventSAI YING LIU: Rental landlord or residential registration initially issued
License 810840 · Inactive
License event. Registration does not prove present operation or storefront occupancy.
Apr 23, 2019
License issue eventYIMENG ZHUANG & BIFENG LIU: Rental landlord or residential registration initially issued
License 810051 · Inactive
License event. Registration does not prove present operation or storefront occupancy.

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

This report was assembled Jul 26, 2026, 1:20 AM ET. Available City datasets are queried from OpenDataPhilly (phl.carto.com) and the cited City ArcGIS feeds; record queries paginate rather than silently taking a first page. For this property: Permits: queried · Violations: queried · Investigations: queried · Appeals: queried · Licenses: queried · Building certifications: queried. “Unavailable” means the source query failed or was not supplied, not “no record.” Reports re-pull on view after seven days and on an overnight rolling schedule; citywide benchmarks recompute weekly. Source dates still govern: the parcel-level tax-delinquency snapshot is June 2022 and the separate detailed tax ledger ends in 2016, so neither establishes today’s balance. The live balance and date-effective payoff must be verified in Tax Center. AI-written passages are grounded in the assembled record and rejected if they state a number the record does not hold.

BlockReport AICited sources

Ask about this commercial property. Every answer cites the records it uses.

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. When you explicitly request a web check, or ask about a current listing or recent news, the agent can also run a cited public-web search; those claims are labeled separately from City records.

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.

AI-generated content; informational purposes only. Answers are generated by artificial intelligence, may contain errors or omissions, are not reviewed by a person before delivery, and are not statements of fact about any person or property. Nothing here constitutes legal, tax, accounting, financial, investment, appraisal, or real-estate brokerage advice. This tool is not a consumer report under the Fair Credit Reporting Act, 15 U.S.C. § 1681 et seq., and may not be used to determine any individual's eligibility for credit, insurance, employment, housing or tenancy, or any other FCRA-covered purpose.

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