2026 taxable assessment $70,100 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $263,400; it is not the 2026 billed-year value.
House report
2129 Mountain St
3 bd · 1 ba · 2 stories · 992 sqft · RSA5 · built 1925
Owner-occupancy signal · assessed $170K (2026) · 2027 OPA assessment $263K · sold 1×. On the 2100 block of Mountain St.
BlockReport AI · cited public records
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Property summary
Assessment$170,1002026 OPA assessment · 2027: $263,400
Last sale$185KRecorded 2024
Est. tax bill$981/year2026 OPA · Homestead-adjusted
Tax delinquencyNo 2022 matchNot proof account is current
Permits0Every fetched City permit
Violations0 open11 historical across 5 cases
“Open” reflects records available then historical records keep their source dates estimates are labeled
Question or correct this record
BlockReport can explain a discrepancy, but it cannot rewrite an official City record. Use the agency that owns the underlying fact:
Property tax
The estimate, live balance, and back-tax record are different.
BlockReport can calculate the annual tax from the City’s taxable assessment. Payments, credits, interest, and a current amount due live separately in Philadelphia Tax Center.
A Tax Center balance is net of bills, payments, credits, interest, and adjustments. A credit—or an amount due—is not automatically “back taxes.”
OPA 3631034002026 OPA removes $100,000 from the taxable assessment through the owner-occupant exemption.
Historical delinquency sources Record found
This parcel did not match the June 2022 delinquency snapshot. That absence does not confirm the account is current today.
A separate historical parcel ledger ending in 2016 records $7,251.85 and a lien entry. It is shown as historical context only.
1994$241.52 total · $0.00 principal · $177.35 interest · $7.91 penalty1995$335.03 total · $0.00 principal · $252.64 interest · $11.28 penalty1996$323.63 total · $0.00 principal · $242.98 interest · $11.28 penalty1997$312.22 total · $0.00 principal · $233.31 interest · $11.28 penalty1998$295.81 total · $0.00 principal · $219.40 interest · $11.28 penalty1999$279.40 total · $0.00 principal · $205.51 interest · $11.28 penalty2000$262.28 total · $0.00 principal · $191.00 interest · $11.28 penalty2001$245.16 total · $0.00 principal · $176.49 interest · $11.28 penalty2002$228.46 total · $0.00 principal · $162.34 interest · $11.28 penalty2003$212.37 total · $0.00 principal · $148.69 interest · $11.28 penalty2004$195.25 total · $0.00 principal · $134.18 interest · $11.28 penalty2005$178.13 total · $0.00 principal · $119.68 interest · $11.28 penalty2006$161.12 total · $0.00 principal · $105.27 interest · $11.28 penalty2007$145.31 total · $0.00 principal · $91.87 interest · $11.28 penalty2008$128.20 total · $0.00 principal · $77.37 interest · $11.28 penalty2009$111.08 total · $0.00 principal · $62.86 interest · $11.28 penalty2010$94.39 total · $0.00 principal · $48.72 interest · $11.28 penalty2011$83.70 total · $0.00 principal · $38.53 interest · $12.40 penalty2012$66.48 total · $0.00 principal · $23.46 interest · $12.88 penalty2014$1,238.62 total · $761.25 principal · $148.44 interest · $53.29 penalty2015$1,157.78 total · $761.25 principal · $79.93 interest · $53.29 penalty2016$955.91 total · $795.23 principal · $11.92 interest · $7.95 penalty
For a purchase, refinance, or closing, request the City’s official Property Payoff statement in Tax Center under “More options.”
What stands out
From the public recordHistory
Record summary4 L&I violations (2007); 5 L&I violations (2011); L&I: 1 failed, 2 passed (2013); 2 L&I violations (2015); Inspection failed (2015); Inspection failed ×3 (2016); Inspection passed ×2 (2017); recorded transfer $185K (2024).
View supporting records →What to do with this
The record, translated into moves — what a buyer, the owner, and a landlord would each want to check next under Philadelphia's actual rules.
If you’re buying
Built 1925: lead rules apply
Federal law requires a lead-paint disclosure at sale for any pre-1978 home. If it will be rented, Philadelphia also requires a lead-safe or lead-free certificate before a rental license can issue.
Zoned RSA5: one household by right
Single-family rowhouse (the classic Philly row). Converting to a duplex or apartments needs a use variance the zoning board rarely grants — Pennsylvania courts require a physical hardship of the lot itself, and economics alone do not qualify.
If you own it
$7,252 in the historical tax ledger through 2016
Historical context only, not a current payoff figure; that ledger also contains a lien entry. Verify today's balance and lien status directly with Philadelphia Revenue before relying on it.
Derived from the fetched property records and linked City guidance as of 2026. Assessment treatment is not a substitute for an exemption approval, live balance, title report, license, occupancy certificate, or inspection. Informational only — not legal, tax, or investment advice.
Assessment and tax history
Every fetched annual City assessment for this house, compared with its block and ZIP. The figures show assessment change, the billed-year tax estimate, dated tax records, and recorded transfers. They do not estimate market appreciation or investment return.
Assessed value
$170,100
2026 billed-year assessment · 2027: $263,400 · built 1925
Price / sq ft
$266
block $244 · above block
Assessment change
+433%
+16%/yr since 2016 · 2027 +55% vs 2026
Est. tax bill / yr
$981
0.58% effective
Jun 2022 tax snapshot
No match
not proof the account is current
Times sold
1
Assessment vs. the block and ZIP · every dated City record marked on the line
- OPA assessment · 2016$49K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2017$49K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2018$49K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2019$81K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2020$87K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2021$87K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2022$87K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2023$156K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2024$156K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2025$170K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2026$170K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- OPA assessment · 2027$263K assessed valueOPA’s value on the City tax roll for that year. It is not an appraisal, listing price, sale price, or live tax balance.How Philadelphia property assessments work ↗
- Deed / sale · 2024Deed / sale $185KA recorded real-estate document or transfer event. The amount and date can be useful history, but the underlying deed and transfer-tax filing control the parties, consideration, and legal effect.How to read the recorded document ↗
- L&I violation · 2007-03-29VACANT BLDG UNSECURED COUNTA dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- L&I violation · 2007-03-29PROSEC- STD INFO (likely: Standard enforcement or prosecution notice)Legacy L&I shorthand; the case notice contains the actual required correction and deadlines.How L&I violations and orders work ↗
- L&I violation · 2007-03-29LICENSE-VAC RES BLDG (vacant residential building license required)This usually records a requirement to obtain a Vacant Structure License for an unoccupied residential building. Check later license and compliance rows because it does not establish present vacancy or an unresolved violation.How the City licenses vacant residential property ↗
- L&I violation · 2007-03-29VACANT PROP STANDARD (likely: vacant-property enforcement standard)A legacy L&I label associated with vacant-property requirements. It may concern licensing, securing, or maintaining a vacant structure; the notice and cited code control, and this row alone does not prove the property is vacant now.Read Philadelphia Code §9-3905 ↗
- L&I violation · 2011-08-31VAC PROP REPLAC WIN/DRS 80%A dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- L&I violation · 2011-08-31LICENSE-VAC RES BLDG (vacant residential building license required)This usually records a requirement to obtain a Vacant Structure License for an unoccupied residential building. Check later license and compliance rows because it does not establish present vacancy or an unresolved violation.How the City licenses vacant residential property ↗
- L&I violation · 2011-12-10WALL PARTIALLY COLLAPSEDA dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- L&I violation · 2015-07-11WALL BULGEDA dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- L&I violation · 2015-07-11WALL DETERIORATEDA dated L&I enforcement row. Read the cited code, required correction, status, and later inspections together; the title alone does not establish the property’s current condition.How L&I violations and orders work ↗
- Inspection · 2015-07-11CSUINITIALA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2006-06-15HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
- Inspection · 2007-07-17HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
- Inspection · 2011-12-28HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
- Inspection · 2011-12-11CSUINITIALA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2012-03-05CSUINITIALA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2013-05-02PRECOURT (likely: pre-court compliance inspection)A follow-up before or during enforcement escalation; confirm the case sequence in the City file.What Philadelphia inspections check ↗
- Inspection · 2016-11-26CSUINITIALA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2017-07-21CSUINITIALA dated L&I visit or review. Its type describes the inspection program; the separate result and later rows show whether that visit passed, failed, or led to follow-up.What Philadelphia inspections check ↗
- Inspection · 2017-09-28HCEU INSP (Housing Code Enforcement Unit inspection)A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended.What Philadelphia inspections check ↗
Property assessmentBlock median & rangeZIP 19145 medianAssessmentDeed / saleL&I violationInspection
Scroll horizontally to move through the years. Each icon sits on its recorded date; records without a day are labeled and centered within their year. Select one to explain the filing.
Highlight
Every dated record20 events · exact dates, newest first
- Deed / saleDeed / sale $185K
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- InspectionCSUINITIAL
- InspectionCSUINITIAL
- L&I violationWALL BULGED
- L&I violationWALL DETERIORATED
- InspectionCSUINITIAL
- InspectionPRECOURT (likely: pre-court compliance inspection)
- InspectionCSUINITIAL
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- InspectionCSUINITIAL
- L&I violationWALL PARTIALLY COLLAPSED
- L&I violationVAC PROP REPLAC WIN/DRS 80%
- L&I violationLICENSE-VAC RES BLDG (vacant residential building license required)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationVACANT BLDG UNSECURED COUNT
- L&I violationPROSEC- STD INFO (likely: Standard enforcement or prosecution notice)
- L&I violationLICENSE-VAC RES BLDG (vacant residential building license required)
- L&I violationVACANT PROP STANDARD (likely: vacant-property enforcement standard)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
The paper trail
History4 L&I violations (2007); 5 L&I violations (2011); L&I: 1 failed, 2 passed (2013); 2 L&I violations (2015); Inspection failed (2015); Inspection failed ×3 (2016); Inspection passed ×2 (2017); recorded transfer $185K (2024).
- 2007 4 L&I violationsL&I
- 2011 5 L&I violationsL&I
- 2013 L&I: 1 failed, 2 passedL&I visit
- 2015 2 L&I violationsL&IInspection failedL&I visit
- 2016 Inspection failed ×3L&I visit
- 2017 Inspection passed ×2L&I visit
- 2024 $185KTransfer
Records behind the chart
Browse the source ledger
The chart above is the primary timeline. This drawer preserves every underlying dated row and its filed status for source-level review.
Browse 29 dated records deeds, permits, inspections, licenses, violations, certifications & appeals
- Recorded transfer$185K transfer
2024
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 606397 · PASSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked passed.
- InvestigationCSUINITIAL
Case 490923 · PASSED
The cited inspection visit was marked passed.
- InvestigationCSUINITIAL
Case 490923 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationCSUINITIAL
Case 309018 · NONE
- ViolationWALL BULGED
Case 490923 · Violation 3816190 · Code PM-307.1/8 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- ViolationWALL DETERIORATED
Case 490923 · Violation 3816189 · Code PM-307.1/11 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 274108 · PASSED
A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 294811 · PASSED
A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 294811 · FAILED
A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationCSUINITIAL
Case 309018 · FAILED
The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 294811 · CLOSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. City marked the record closed; open the case for the closing reason.
- ViolationWALL PARTIALLY COLLAPSED
Case 309018 · Violation 2303982 · Code PM-307.1/12 · CLOSEDCASE
City marked the case closed; that does not mean the original condition never existed.
- ViolationVAC PROP REPLAC WIN/DRS 80%
Case 294811 · Violation 2729183 · Code PM-306.2/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationLICENSE-VAC RES BLDG (vacant residential building license required)
Case 294811 · Violation 2729182 · Code PM-102.4/2 · COMPLIED
This usually records a requirement to obtain a Vacant Structure License for an unoccupied residential building. Check later license and compliance rows because it does not establish present vacancy or an unresolved violation. City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 274108 · FAILED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 274108 · CLOSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. City marked the record closed; open the case for the closing reason.
- ViolationVAC PROP REPLAC WIN/DRS 80%
Case 274108 · Violation 2702815 · Code PM-306.2/4 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationLICENSE-VAC RES BLDG (vacant residential building license required)
Case 274108 · Violation 2702814 · Code PM-102.4/2 · COMPLIED
This usually records a requirement to obtain a Vacant Structure License for an unoccupied residential building. Check later license and compliance rows because it does not establish present vacancy or an unresolved violation. City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 67594 · FAILED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 67594 · CLOSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. City marked the record closed; open the case for the closing reason.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 107173 · PASSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked passed.
- ViolationVACANT BLDG UNSECURED COUNT
Case 107173 · Violation 530323 · Code PM-306.2/1 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationPROSEC- STD INFO (likely: Standard enforcement or prosecution notice)
Case 107173 · Violation 530320 · Code A-503.2/2 · COMPLIED
Legacy L&I shorthand; the case notice contains the actual required correction and deadlines. City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationLICENSE-VAC RES BLDG (vacant residential building license required)
Case 107173 · Violation 530321 · Code PM-102.4/2 · COMPLIED
This usually records a requirement to obtain a Vacant Structure License for an unoccupied residential building. Check later license and compliance rows because it does not establish present vacancy or an unresolved violation. City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationVACANT PROP STANDARD (likely: vacant-property enforcement standard)
Case 107173 · Violation 530322 · Code PM-306.0/1 · COMPLIED
A legacy L&I label associated with vacant-property requirements. It may concern licensing, securing, or maintaining a vacant structure; the notice and cited code control, and this row alone does not prove the property is vacant now. City marked this violation complied with; check the resolution date and live case for what was accepted.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 107173 · FAILED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 63949 · PASSED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked passed.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 63949 · FAILED
A legacy L&I inspection label. The unit inspected housing for property-maintenance, fire-prevention, and related code compliance; the separate status says how that visit ended. The cited inspection visit was marked failed; later rows may show follow-up or resolution.
What this record suggests
The dated deed and City-record sequence is assembled below. Read timing as a research lead, not proof of renovation, condition, or motive.
Flags: historical tax ledger through 2016 recorded $7K with a lien entry. Informational only — not investment advice or a consumer report (FCRA).
The property, on paper
The city assessor's field record — the physical spec sheet behind the assessed number.
Bedrooms
3
Bathrooms
1
Stories
2
Interior
992 sqft
livable area
Lot
658 sqft
Basement
Full
city code D
Heat
Forced hot air
city code A
Central air
No
Exterior condition
Average
city code 4
Above averageBelow average
Interior condition
New / rehabbed
city code 2
New / rehabbed
Quality grade
C
assessor's grade
ABCDE
Zoning
RSA5
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Block context
2129 Mountain St sits on the 2100 block of Mountain St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 2127 Mountain St · 2131 Mountain 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
- Imagery — Street photo © Google · Aerial © Esri, Maxar
Methodology & freshness
This report was assembled Jul 10, 2026, 9:06 PM 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.
Official city record ↗ · L&I history ↗ · See the whole block · Download this record (JSON)