2026 taxable assessment $497,500 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $372,800; it is not the 2026 billed-year value.
House report
1629 Diamond St
3 stories · 2,700 sqft · RM1 · built 1915
Absentee individual · assessed $498K (2026) · 2027 OPA assessment $373K · 4 licensed units · sold 1×. On the 1600 block of Diamond St.
Property summary
Assessment$497,5002026 OPA assessment · 2027: $372,800
Last sale$223KRecorded 2010 · later nominal deed
Est. tax bill$6,964/year2026 taxable assessment × 1.3998%
Tax delinquencyNo 2022 matchNot proof account is current
Permits5Every fetched City permit
Violations0 open22 historical across 5 cases
“Open” reflects records available then historical records keep their source dates estimates are labeled
BlockReport AI · cited public records
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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 3210439002026 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 recordNew construction
Why it mattersbuilt new under a 2010 permit.
View supporting records →City Property History
Fetched L&I and zoning records
Every row successfully fetched for this report is counted below. Dataset availability and matching can differ from the City's interactive file; use the official link for current detail.
- Recorded owner
- Michael P Lopsonzski
- Tax mailing address
- 2542 W FAIRVIEW ST, ALLENTOWN PA, 18104
- L&I district
- NORTH
- Building ID (BIN)
- —
- OPA account
- 321043900
Permits5Every dated permit
Violation cases522 violation records · 0 open
Investigations2013 failed · 4 passed · 3 closed
Building certifications0No match
Business licenses11 active
Appeals0No match
PermitsPermit number, issued date, work and City status5
AlterationPermit 284802
Jun 21, 2010 COMPLETED Completed Sep 27, 2010
RESTORE HOUSE TO REMAIN IN ORIGINAL LAYOUT. NEW SHEETROCK OVER EXISTING LATHE AND PLASTER WALLS. REPAIR TRIM AND REFINISH HARDWOOD FLOOR.
UsePermit 300020
Sep 16, 2010 COMPLETED Completed Sep 16, 2010
USE SPACE AS A ROOMING HOUSE WITH (4) ROOMING UNITS FOR (12) OCCUPANTS ALL CAPABLE OF SELF PRESERVATION AND SELF-SUSTAINING AND NOT UNDER THE JURISDICTION OF ANY COURT SYSTEM WITHIN EXISTING STRUCTURE,
ElectricalPermit 435705
Nov 1, 2012 COMPLETED Completed Jan 7, 2016
ADD EMERGENCY LIGHTING SYSTEM AS PER 2008 NEC(SFD)
New construction, addition, GFA changePermit ZP-2021-009543
Aug 31, 2021 Issued
FOR THE ERECTION OF A ROOF DECK AND ROOF DECK ACCESS STRUCTURE ABOVE THE EXISTING ATTACHED STRUTURE. SIZE AND LOCATION AS SHOWN IN APPLICATION/PLANS.
Addition and/or AlterationPermit CP-2021-007198
Feb 22, 2022 Expired Completed Dec 20, 2022
FOR THE ERECTION OF A ROOF DECK AND ROOF DECK ACCESS STRUCTURE ABOVE THE EXISTING ATTACHED STRUCTURE AS PER APPROVED PLANS.
Violation cases22 individual violation records; resolved history remains visible5
Case 300777CLOSED
STANDARD · Opened Oct 5, 2011
- PERM Z- NEW USEViolation 2658790Oct 5, 2011 COMPLIED
- EXT A-CLEAN RUBBISH/GARBAGEViolation 2658795Oct 5, 2011 COMPLIED
- ANNUAL CERT FIRE ALARMViolation 2658794Oct 5, 2011 COMPLIED
- FIRE-PULL STATION SIGNSViolation 2658793Oct 5, 2011 COMPLIED
- SD-REQD EXIST GROUP RViolation 2658792Oct 5, 2011 COMPLIED
- FIRE EXTING-INSTALL R2Violation 2658791Oct 5, 2011 COMPLIED
Case 301212CLOSED
CONSTRUCTION SERVICES · Opened Oct 11, 2011 · completed Jul 20, 2016
- PERME- INSTALL SMKE DETECTViolation 2318383Oct 5, 2011 COMPLIED
- PERM Z- NEW USEViolation 2318385Oct 5, 2011 COMPLIED
- PERME- INST/REPL/REPAIR WIREViolation 2318384Oct 5, 2011 COMPLIED
- PERME- REQUIRED TO CORR VIOLViolation 2318386Oct 5, 2011 COMPLIED
- CHANGE IN OCCUPANCYViolation 2318382Oct 5, 2011 COMPLIED
- LISTED CONDIT DOES NOT COMPLYViolation 2318387Oct 5, 2011 COMPLIED
Case 326376CLOSED
CONSTRUCTION SERVICES · Opened May 3, 2012 · completed Dec 29, 2015
- CHANGE IN OCCUPANCYViolation 3699717Sep 2, 2015 ERROR
- PERME- INST/REPL/REPAIR WIREViolation 3699719Sep 2, 2015 ERROR
- PERME- INSTALL SMKE DETECTViolation 3699718Sep 2, 2015 ERROR
- LISTED CONDIT DOES NOT COMPLYViolation 3699722Sep 2, 2015 ERROR
- PERME- REQUIRED TO CORR VIOLViolation 3699721Sep 2, 2015 ERROR
- PERM Z- NEW USEViolation 3699720Sep 2, 2015 ERROR
Case 456574CLOSED
STANDARD · Opened Oct 11, 2014 · completed Jan 11, 2015
- EXIT SIGN ILLUMINATION REQ¿DViolation 3402325Oct 11, 2014 COMPLIED
- EMERG LIGHTING DEFECTIVEViolation 3402324Oct 11, 2014 COMPLIED
- ANNUAL CERT FIRE ALARMViolation 3402326Oct 11, 2014 COMPLIED
Case CF-2023-017190CLOSED
NOTICE OF VIOLATION · Opened Mar 3, 2023 · completed Mar 15, 2025
- NEW WINDOW/DOORViolation VI-2023-013097Mar 3, 2023 CLOSED
InvestigationsEvery inspector visit, including CLOSED outcomes20
HCEU INSPCase 300777
Oct 5, 2011 FAILED
BP_BLDGCase 301212
Oct 14, 2011 FAILED
BP_BLDGCase 301212
Nov 18, 2011 FAILED
HCEU INSPCase 300777
Dec 2, 2011 FAILED
HCEU INSPCase 300777
Dec 22, 2011 CLOSED
BP_BLDGCase 301212
Dec 27, 2011 CLOSED
PRECOURTCase 301212
May 3, 2012 CLOSED
PRECOURTCase 300777
Sep 12, 2012 FAILED
PRECOURTCase 300777
Nov 30, 2012 FAILED
PRECOURTCase 300777
Jan 8, 2013 PASSED
HCEU INSPCase 456574
Oct 11, 2014 FAILED
HCEU INSPCase 456574
Nov 22, 2014 FAILED
HCEU INSPCase 456574
Jan 11, 2015 PASSED
BP_BLDGCase 326376
Sep 2, 2015 FAILED
BP_BLDGCase 326376
Dec 28, 2015 PASSED
L&I investigationCase CF-2023-017190
Mar 3, 2023 FAILED
L&I investigationCase CF-2023-017190
Apr 17, 2023 FAILED
L&I investigationCase CF-2023-017190
Jun 30, 2023 FAILED
L&I investigationCase CF-2023-017190
Aug 4, 2023 FAILED
L&I investigationCase CF-2023-017190
Mar 15, 2025 PASSED
Building certificationsInspection result and filed expiration date by L&I building ID0
No building certifications matched this parcel in the fetched City dataset.
Business licensesHistorical and active licenses are both retained1
RentalLicense 534796
LOPSONZSKI MICHAEL P
Revenue code 3202 · First issued May 31, 2011 Active Expiration Feb 28, 2027
AppealsApplication status and decision are separate City fields0
No appeals matched this parcel in the fetched City dataset.
City of Philadelphia OPA, L&I and Zoning Board records, shown as filed. A CLOSED investigation is an outcome label, not a missing visit; an appeal's application status and decision may differ.
Legal due diligence
What this record proves—and what it does not.
These checks are triggered by this property’s actual City rows. They identify the controlling document to verify; they do not declare a use legal, a building safe, or title clear.
2 resolve before relying
5 verify
1 favorable dated record
Resolve before relyingZoning approval is not the occupancy fileUse permit #300020: COMPLETED. The history also contains “PERM Z- NEW USE.”
Why it mattersPhiladelphia says a zoning approval or Property Sales Certification can identify a use without proving that it was established under the Building Code. A change of use, unit count, exits, or fire rating can require a Building Permit and Certificate of Occupancy.
Verify nextVerify the lawful use, unit count, associated construction permits, and Certificate of Occupancy with L&I.
Open the controlling City guidance ↗Resolve before relyingA permit row needs file-level verification1 permit not marked completed: CP-2021-007198 (Expired). At least one row also carries a completion date, so the City fields conflict.
Why it mattersIssued work is not the same as approved final work. L&I uses final inspections and required certifications to close construction permits; expired, withdrawn, and completed are different City statuses.
Verify nextOpen the permit file and confirm final inspections, holds, and any resulting occupancy certificate.
Open the controlling City guidance ↗VerifyA rental license does not transfer with the deed1 active Rental License record matched.
Why it mattersIf dwelling space is rented, the buyer must obtain a new annual Rental License; the seller’s license is not transferable. New applications require proof of ownership and legal occupancy, tax compliance, no open L&I violations, and lead compliance where applicable.
Verify nextPlan the buyer’s replacement license before settlement.
Open the controlling City guidance ↗VerifyTax mail goes outside Philadelphia; owner residence still needs verificationOPA mails the property tax record outside Philadelphia (2542 W FAIRVIEW ST, ALLENTOWN PA, 18104).
Why it mattersA tax mailing destination does not establish where the owner lives. If a rental owner lives outside Philadelphia, the City requires a managing agent with a Philadelphia mailing address; the owner remains legally responsible.
Verify nextVerify the buyer’s residence and, if the buyer will live outside Philadelphia, identify the Philadelphia managing agent on the new license application.
Open the controlling City guidance ↗VerifyLead compliance is a separate recordOPA records a 1915 build year; BlockReport does not receive the Health Department’s unit-level lead certificate file.
Why it mattersPhiladelphia requires covered pre-March-1978 rentals to be certified lead-safe or lead-free for a new or renewed lease and for a new or renewed Rental License. A certificate is unit-specific; a renovation does not by itself create an exemption.
Verify nextRequest the current lead certificate or City exemption for every dwelling unit.
Open the controlling City guidance ↗VerifyFailed inspections are dated events—not the current condition13 failed, 4 passed, and 3 CLOSED investigation outcomes are in the fetched history; the latest dated visit was PASSED on Mar 15, 2025.
Why it mattersA PASSED or FAILED value applies to that inspection visit. CLOSED is a separate source status; none of the three alone proves the parent permit or violation case closed—or describes today’s condition.
Verify nextOpen the parent case/permit for each material failure and confirm its later disposition.
Open the controlling City guidance ↗VerifyThe latest nominal transfer is not a market sale—or a title opinionThe latest deed in the assembled record moved for nominal consideration.
Why it mattersA $1 or nominal deed can be a valid family, estate, or entity transfer. It does not establish a sale price, clear title, or by itself prove a tangled title.
Verify nextRead the recorded deed and have the title search confirm every grantor, grantee, estate/probate step, lien, and authority to sell.
Open the controlling City guidance ↗Favorable dated recordNo open violation; closed history remains relevantThe fetched record shows 0 open and 22 historical violations across 5 cases.
Why it mattersA closed case is materially better than an open one, but it does not by itself prove that every altered use, unit, or concealed condition matches today’s approvals.
Verify nextUse the closed cases to target the inspection and occupancy-file review.
Open the controlling City guidance ↗Closing file: checks no public-record summary can replace5 documents/searches to assign before settlement
Property Sales Certification
The seller must obtain Philadelphia’s certificate showing the base zoning, last use in the zoning record, and open violations. The City warns that it does not prove Building Code occupancy or show zoning overlays.
Next: Obtain the fresh certificate and compare it with the CO, permits, and Atlas overlays.
Official guidance ↗Date-effective City Property Payoff
The Tax Center Property Payoff covers Real Estate Tax, Commercial Trash, and L&I abatement-work invoices. Philadelphia says it does not include business-tax debts or liens, water and sewer charges, or fines for code violations.
Next: Request the City statement effective through settlement; read every period and invoice.
Official guidance ↗Professional title and water-lien searches
OPA ownership, deed summaries, and a zero tax balance are not clear title. Mortgages, judgments, municipal claims, water liens, easements, heirs, and other encumbrances require separate searches.
Next: Use a Pennsylvania lawyer/title company and obtain owner’s title insurance; order the separate water search/payoff.
Official guidance ↗Separate water-lien guidance ↗Seller-specific tax relief is not the buyer’s bill
LOOP and low-income or senior Real Estate Tax freezes depend on the qualifying owner and continued program eligibility; a buyer cannot assume the seller’s capped or frozen bill continues. A separately verified property abatement often remains with the property for its remaining term, but program-specific new-owner filing, use, and tax-compliance conditions still must be confirmed—not inferred from the reduced assessment alone.
Next: Have Revenue or OPA identify every current benefit, model the buyer’s bill without seller-specific relief, and confirm any verified abatement in writing.
Official guidance ↗Separate water-lien guidance ↗Seller disclosure and independent inspections
For a covered Pennsylvania residential transfer, obtain the statutory seller disclosure. It reports the seller’s knowledge; it is not a warranty, title search, code review, or substitute for inspections. Because OPA dates this building before 1978, separately obtain the required federal/City lead disclosures and any test results.
Next: Have the agreement and disclosure reviewed for this transaction’s coverage and exceptions.
Official guidance ↗Informational only—not a legal opinion, title report, code inspection, tax payoff, or substitute for a Pennsylvania lawyer, title company, inspector, or tax professional.
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.
The last transfer used nominal consideration
The latest deed records $100 or less. 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’re the landlord
Lead certificate is not optional
Built 1915: every rental unit needs a lead-safe or lead-free certificate on file with the City. Without one: fines up to $2,000/day per unit, tenants may withhold rent, courts can order rent refunded — and no eviction will stand.
Licensed rental — keep it that way
Renewal requires city tax clearance and zero open L&I violations on the property. A lapsed license suspends the right to collect rent or evict.
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.
The investment read
How this house has moved and where it's pointed: the city's assessed value (not a listing price) over 12 years, charted against its block; appreciation is that history's pace, and the 5-year figure simply extends it. Yield estimates rent-vs-price from area rents. Ask the record to dig into any number.
Assessed value
$497,500
2026 billed-year assessment · 2027: $372,800 · built 1915
Price / sq ft
$138
block $160 · below block
Appreciation
+59%
+5%/yr, city 6.5%
In 5 years (~2031)
~$374K
+5%/yr own pace held 5 yrs — extrapolation, not a forecast
Est. tax bill / yr
$6,964
1.87% effective
Jun 2022 tax snapshot
No match
not proof the account is current
Gross yield
—
Times sold
1
licensed rental
Value vs. the block, over time — sales, permits & L&I events marked on the line
This houseBlock median & rangeL&I violationPermitInspection
The paper trail
New constructionbuilt new under a 2010 permit.
- 2010 UsePermit
- 2011 12 L&I violationsL&I
- 2012 ElectricalPermit
- 2014 3 L&I violationsL&IInspection failed ×2L&I visit
- 2015 6 L&I violationsL&IL&I: 1 failed, 2 passedL&I visit
- 2021 New construction, addition, GFA changePermit
- 2022 Addition and/or AlterationPermit
- 2023 L&I violationL&IInspection failed ×4L&I visit
- 2025 Inspection passedL&I visit
Flags: active rental license. 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.
Stories
3
Interior
2,700 sqft
livable area
Lot
1,800 sqft
Exterior condition
Above average
city code 3
Above averageBelow average
Interior condition
Above average
city code 3
Above averageBelow average
Quality grade
C
assessor's grade
ABCDE
Zoning
RM1
city zoning code
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Run the numbers
What owning 1629 Diamond 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 4 licensed units × ~85% of the area's median unit rent — the whole building's income, not one unit's. Assessed value is not an asking price — set the price slider to the real one.
When this house last sold (2010) a 30-year mortgage ran about 4.69% — Freddie Mac's average that year.
Mortgage
—
P&I · 30-yr fixed
All-in monthly
—
+ taxes & insurance
Cash to close
—
down + ~4% costs
Cash flow
—
rent − all costs · /mo
Cap rate
—
NOI ÷ price
Cash-on-cash
—
year-1 return on cash in
Estimates for orientation, not advice. Assumes a 30-year fixed loan, $2,800/yr insurance, 1% of price/yr maintenance; taxes use this parcel's taxable assessment, not a live Tax Center balance.
Block context
1629 Diamond St sits on the 1600 block of Diamond St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 1627 Diamond St · 1631 Diamond 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, 1:39 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)