2026 taxable assessment $309,800 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $302,200; it is not the 2026 billed-year value.
House report
1771 Waterloo St
4 bd · 1 ba · 3 stories · 1,680 sqft · RSA5 · built 1915
Owner-occupancy signal · assessed $310K (2026) · 2027 OPA assessment $302K. On the 1700 block of Waterloo St.
BlockReport AI · cited public records
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Property summary
Assessment$309,8002026 OPA assessment · 2027: $302,200
Last sale—No sale value available
Est. tax bill$4,337/year2026 taxable assessment × 1.3998%
Tax delinquencyNo 2022 matchNot proof account is current
Permits5Every fetched City permit
Violations0 open2 historical across 1 case
“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 1830763302026 taxable assessment equals the full assessed 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.”
What stands out
From the public recordPermit on record
Record summaryMajor alteration permit recorded in 2015.
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 1915: 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.
The last transfer used nominal consideration
The latest deed records $100 or less and shared-name parties. That is not a usable market-sale price and can reflect a family, estate, gift, correction, or entity transfer. Inspect the deed and order a title search rather than inferring the relationship or chain.
If you own it
$1,399/yr may be unclaimed
This home reads owner-occupied but shows no Homestead Exemption, which removes $100,000 from the taxable assessment (worth up to $1,399/yr). Applying through the City is free and takes minutes.
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
$309,800
2026 billed-year assessment · 2027: $302,200 · built 1915
Price / sq ft
$180
block $281 · below block
Assessment change
+197%
+10%/yr since 2016 · 2027 -2% vs 2026
Est. tax bill / yr
$4,337
1.4% effective
Jun 2022 tax snapshot
No match
not proof the account is current
Times sold
0
latest deed has shared-name parties
Assessment vs. the block and ZIP · every dated City record marked on the line
- OPA assessment · 2016$102K 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$102K 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$102K 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$198K 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$197K 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$197K 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$197K 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$260K 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$260K 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$310K 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$310K 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$302K 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 ↗
- Permit · 2014-06-11UseThis permit category usually covers the property’s allowed use, dimensions, occupancy, or site configuration. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- Permit · 2014-06-19ElectricalThis permit category usually covers electrical installation, alteration, replacement, or repair. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- Permit · 2014-08-04MechanicalThis permit category usually covers construction, repair, alteration, addition, or occupancy work. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- Permit · 2015-04-27Zoning/useThis permit category usually covers the property’s allowed use, dimensions, occupancy, or site configuration. The approved scope—not the short category—defines what was authorized, and issuance alone does not prove completion.Philadelphia construction and repair permits ↗
- Permit · 2015-06-29Major alterationA broad legacy permit work category for a substantial building alteration. It can include changed layouts, partitions, fixtures, finishes, structural work, or occupancy-related work, but only the approved scope and plans say what this permit actually authorized; separate trade permits may be required.What Philadelphia building permits can cover ↗
- L&I violation · 2014-11-19FA-ALARM DEV DEFECTIVEA 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 · 2014-11-19EXT S-HANDRAIL MAINTAINA 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 · 2014-12-30HCEU 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 · 2015-02-12HCEU 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 · 2015-10-08PRECOURT (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 ↗
- License · 2014-10-21RentalA City license record tied to an activity or property use. Its issue, expiration, inactive, and status fields—not the category alone—show what was recorded for this date.Philadelphia L&I licenses and property records ↗
Property assessmentBlock median & rangeZIP 19122 medianAssessmentL&I violationPermitInspectionLicense
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 record11 events · exact dates, newest first
- InspectionPRECOURT (likely: pre-court compliance inspection)
- PermitMajor alteration
- PermitZoning/use
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- InspectionHCEU INSP (Housing Code Enforcement Unit inspection)
- L&I violationFA-ALARM DEV DEFECTIVE
- L&I violationEXT S-HANDRAIL MAINTAIN
- LicenseRental
- PermitMechanical
- PermitElectrical
- PermitUse
The paper trail
Permit on recordMajor alteration permit recorded in 2015.
- 2014 UsePermitElectricalPermit2 L&I violationsL&IInspection failed ×2L&I visitMechanicalPermit
- 2015 Zoning/usePermitMajor alterationPermitL&I: 3 failed, 1 passedL&I visit
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 11 dated records deeds, permits, inspections, licenses, violations, certifications & appeals
- InvestigationPRECOURT (likely: pre-court compliance inspection)
Case 461122 · 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 461122 · 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.
- PermitMajor alteration
Permit 609975 · COMPLETED
FOR THE ERECTION OF A THIRD STORY ROOF DECK TO AN EXISTING SECOND FLOOR ROOF ON AND EXISTING TWO FAMILY DWELLING.
- PermitZoning/use
Permit 601469 · COMPLETED
FOR THE ERECTION OF A ROOF DECK ACCESSORY TO AN EXISING ATTACHED TWO FAMILY DWELLING. SIZE AND LOCATION AS SHOWN ON SUBMITTED PLAN.
- InvestigationHCEU INSP (Housing Code Enforcement Unit inspection)
Case 461122 · 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.
- ViolationFA-ALARM DEV DEFECTIVE
Case 461122 · Violation 3706794 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- ViolationEXT S-HANDRAIL MAINTAIN
Case 461122 · Violation 3706795 · COMPLIED
City marked this violation complied with; check the resolution date and live case for what was accepted.
- LicenseRental
License 645102 · Inactive
MICHAEL & JEANETTE MATTIONI · Expires 2026-02-28 · Inactive 2026-04-29
- PermitMechanical
Permit 551671 · EXPIRED
INSTALL 2 HEAT PUMPS WITH DUCTWORK (TWO-FAMILY DWELLING)
- PermitElectrical
Permit 544261 · COMPLETED
REWIRE BUILDING TO CREATE TWO APARTMENTS, INSTALL 300AMP SERRICE 1-200AMP AND 1-100AMP PANEL, ALL OUTLETS, SWITCHES, APPLICANCES, LIGHTS ADD HARD WIRED SMOKES THROUGHOUT AS PER 2008 NEC AND THE RESIDENTAL CODE (EAST DISTRICT)TWO FAMILY DWELLING
- PermitUse
Permit 542371 · COMPLETED
EXISITNG STRUCTURE FOR USE AS TWO (2) FAMILY HOUSEHOLD LIVING. NO CHANGE IN HEIGHT OR AREA OF EXISITNG STRUCTURE.
What this record suggests
The City file documents 5 permits touching electrical work, roof work. 4 carries a completed, issued, or approved status; that documents the filing, not the present quality of the work.
Flags: latest deed has shared-name parties — relationship unverified. 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
4
Bathrooms
1
Stories
3
Interior
1,680 sqft
livable area
Lot
560 sqft
Basement
Full, unfinished
city code C
Heat
Forced hot air
city code A
Central air
No
Exterior condition
Average
city code 4
Above averageBelow average
Interior condition
Average
city code 4
Above averageBelow average
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.
Run the numbers
What owning 1771 Waterloo St takes, at your price and your rate. Taxes start with an annual estimate from the City’s taxable assessment, not a current bill or balance; rent starts at the area median. Assessed value is not an asking price — set the price slider to the real one.
Mortgage
—
P&I · 30-yr fixed
All-in monthly
—
+ taxes & insurance
Estimated cash needed
—
down + 4% planning allowance
Modeled cash flow
—
rent − shown costs · /mo
Modeled cap rate
—
modeled NOI ÷ price
Modeled cash-on-cash
—
modeled year-1 return
Scenario for orientation, not advice. Assumes a 30-year fixed loan, $1,400/yr insurance, 1% of price/yr maintenance, and buyer cash equal to the down payment plus 4%. Taxes use this parcel's taxable assessment, not a live Tax Center balance. Cash flow and returns exclude vacancy, management, utilities, HOA or condo fees, leasing costs, income tax, and unplanned capital work.
Block context
1771 Waterloo St sits on the 1700 block of Waterloo St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 1769 Waterloo St · 1767 Waterloo 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, 6:23 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.
Official city record ↗ · L&I history ↗ · See the whole block · Download this record (JSON)