2026 taxable assessment $421,900 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $437,700; it is not the 2026 billed-year value.
Multi-family report
1816 Diamond St
9 bd · 3 ba · 3 stories · 2,736 sqft · RM1 · built 1915
Investor / LLC · assessed $422K (2026) · 2027 OPA assessment $438K · sold 7×. On the 1800 block of Diamond St.
Property summary
Assessment$421,9002026 OPA assessment · 2027: $437,700
Last sale$879KRecorded 2025
Est. tax bill$5,906/year2026 taxable assessment × 1.3998%
Tax delinquencyNo 2022 matchNot proof account is current
Permits1Every fetched City permit
Violations2 open27 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 3211789002026 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 recordRenovated & sold on
Why it mattersBought for $270K in 2015, plumbing permit in 2017, sold for $879K in 2025 (+1252%).
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
- West Diamond Estates LLC
- Tax mailing address
- 1006 E RITTENHOUSE ST, PHILADELPHIA PA, 19138
- L&I district
- NORTH
- Building ID (BIN)
- —
- OPA account
- 321178900
Permits1Every dated permit
Violation cases527 violation records · 1 open
Investigations169 failed · 4 passed · 3 closed
Building certifications0No match
Business licenses50 active
Appeals0No match
PermitsPermit number, issued date, work and City status1
PlumbingPermit 824969
Oct 18, 2017 COMPLETED Completed Oct 19, 2017
REPLACE HOUSE TRAP AND FAI PA20172900748 SELF CERTIFICATION NO LONGER ACCEPTED ALL TRENCHES IN EXCESS OF 5 FT MUST HAVE APPROVED SHORING AT THE TIME OF INSPECTION.
Violation cases27 individual violation records; resolved history remains visible5
Case 486575CLOSED
STANDARD · Opened Jun 20, 2015 · completed Oct 29, 2015
- DRAINAGE-DOWNSPOUT REPR/REPLCViolation 3604090Jun 20, 2015 COMPLIED
- INT S-CEILING REPAIR/MAINT SANViolation 3604092Jun 20, 2015 COMPLIED
- EXT S-ROOF REPAIRViolation 3604091Jun 20, 2015 COMPLIED
Case 502998CLOSED
STANDARD · Opened Sep 18, 2015 · completed Oct 9, 2015
- FIRE EXTING-INSTALL MAX 75FTViolation 3714477Sep 17, 2015 COMPLIED
- FIRE EXTING-INSTALL R2Violation 3714478Sep 17, 2015 COMPLIED
- FIRE EXTING-NEEDS INSP/TAGViolation 3714479Sep 17, 2015 COMPLIED
- FIRE-PULL STATION SIGNSViolation 3714480Sep 17, 2015 COMPLIED
- ANNUAL CERT FIRE ALARMViolation 3714481Sep 17, 2015 COMPLIED
- RENEW LIC INDICATEDViolation 3714482Sep 17, 2015 COMPLIED
- INT DOOR SELF-CLOSEViolation 3714486Sep 17, 2015 COMPLIED
Case 508308CLOSED
STANDARD · Opened Oct 29, 2015 · completed Mar 23, 2016
- FIRE-PULL STATION SIGNSViolation 3830197Oct 28, 2015 COMPLIED
- FIRE EXTING-INSTALL MAX 75FTViolation 3830194Oct 28, 2015 COMPLIED
- FIRE EXTING-INSTALL R2Violation 3830195Oct 28, 2015 COMPLIED
- FIRE EXTING-NEEDS INSP/TAGViolation 3830196Oct 28, 2015 COMPLIED
- INT DOOR SELF-CLOSEViolation 3830193Oct 28, 2015 COMPLIED
- ANNUAL CERT FIRE ALARMViolation 3830198Oct 28, 2015 COMPLIED
Case CF-2020-081345CLOSED
NOTICE OF VIOLATION · Opened Nov 18, 2020 · completed Feb 4, 2021
- OPEN JUNCTION BOXESViolation VI-2020-048634Nov 18, 2020 COMPLIED
- RUBBISH & GARBAGEViolation VI-2020-048633Nov 18, 2020 COMPLIED
- INTERIOR SURFACESViolation VI-2020-048632Nov 18, 2020 COMPLIED
- EXTERIOR AREA RODENT HARBORAGEViolation VI-2020-048631Nov 18, 2020 COMPLIED
- TANKS OUT-OF-SERVICE 90 DAYSViolation VI-2020-048630Nov 18, 2020 COMPLIED
- HANDRAILS & GUARDSViolation VI-2020-048637Nov 18, 2020 COMPLIED
- FOOD PREPARATIONViolation VI-2020-048638Nov 18, 2020 COMPLIED
- CERTIFICATIONViolation VI-2020-048636Nov 18, 2020 COMPLIED
- ELECTRICAL- RECEPTACLESViolation VI-2020-048635Nov 18, 2020 COMPLIED
Case CF-2026-046244IN VIOLATION
NOTICE OF VIOLATION · Opened May 4, 2026
- PERIODIC TESTING Violation VI-2026-029865May 8, 2026 OPEN
- RENTAL LICENSE MULTI FAMILY (R2)Violation VI-2026-029866May 8, 2026 OPEN
InvestigationsEvery inspector visit, including CLOSED outcomes16
HCEU INSPCase 78258
Sep 6, 2006 FAILED
HCEU INSPCase 78258
Mar 22, 2011 PASSED
HCEU INSPCase 486575
Jun 20, 2015 FAILED
HCEU INSPCase 502998
Sep 17, 2015 FAILED
HCEU INSPCase 502998
Oct 8, 2015 CLOSED
HCEU INSPCase 486575
Oct 28, 2015 CLOSED
HCEU INSPCase 508308
Oct 28, 2015 FAILED
HCEU INSPCase 508308
Dec 3, 2015 FAILED
HCEU INSPCase 508308
Jan 28, 2016 CLOSED
PRECOURTCase 508308
Feb 16, 2016 PASSED
HCEU INSPCase 525070
May 5, 2016 PASSED
L&I investigationCase CF-2020-081345
Nov 18, 2020 FAILED
L&I investigationCase CF-2020-081345
Dec 23, 2020 FAILED
L&I investigationCase CF-2020-081345
Feb 4, 2021 PASSED
L&I investigationCase CF-2026-046244
May 8, 2026 FAILED
L&I investigationCase CF-2026-046244
Jun 25, 2026 FAILED
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 retained5
RentalLicense 390918
M M NICOLAIS GROUP INC
Revenue code 3202 · First issued Nov 9, 2006 Inactive Expiration Feb 29, 2008 Inactive Aug 11, 2011
RentalLicense 436248
INNOVATIVE PROPERTIES WORLDWIDE LLC
Revenue code 3202 · First issued Feb 20, 2008 Inactive Expiration Feb 28, 2009 Inactive Aug 11, 2011
RentalLicense 541193
DIANE BABICZ
Revenue code 3202 · First issued Aug 11, 2011 Inactive Expiration Feb 28, 2015 Inactive Apr 29, 2015
RentalLicense 680227
MARK ADLER
Revenue code 3202 · First issued Oct 9, 2015 Inactive Expiration Oct 31, 2018 Inactive Dec 30, 2018
RentalLicense 772462
Cyprian Sadlon (1816 Diamond LLC)
Revenue code 3202 · First issued Apr 11, 2018 Inactive Expiration Apr 10, 2021 Inactive Jun 9, 2021
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
3 verify
Resolve before relyingZoning approval is not the occupancy fileThe record identifies more than one dwelling/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 relying2 open L&I violations27 violation rows are retained in the City ledger.
Why it mattersOpen notices can accrue fees, block permits or license renewal, and move to court or collection. Standard initial notices generally have a 30-day appeal window; unsafe or imminently-dangerous notices have a much shorter window.
Verify nextRead the notice—not only the summary status—and confirm reinspection, fees, and appeal posture with L&I.
Open the controlling City guidance ↗VerifyResidential form does not establish rental useOPA classifies the parcel as multi-family; no active Rental License row matched.
Why it mattersA multi-unit or mixed-use classification does not prove that space is currently rented. If dwelling space is rented, Philadelphia generally requires a current Rental License and related occupancy, tax, violation, and lead compliance.
Verify nextConfirm actual occupancy first; if any unit is rented, verify the license and legal unit count with L&I.
Open the controlling City guidance ↗VerifyFailed inspections are dated events—not the current condition9 failed, 4 passed, and 3 CLOSED investigation outcomes are in the fetched history; the latest dated visit was FAILED on Jun 25, 2026.
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 ↗VerifyA separate Commercial Trash account may applyOPA classifies the parcel as multi-family. BlockReport does not receive a current Commercial Trash account balance.
Why it mattersPhiladelphia charges qualifying small commercial, mixed-use, and multi-unit properties that use City collection; exemptions and private collection can change applicability. A use category alone does not prove a fee is due.
Verify nextCheck the Commercial Trash account inside the date-effective Property Payoff.
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.
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.
Records to verify together
More than one separately dated public record deserves a current-status check.
Evidence: 2 open L&I violations · failed L&I inspection activity in 2026
Limit: A screening signal, not a foreclosure prediction. Tax entries are historical and must be verified with Philadelphia Revenue.
Transparent record rules, not a score or forecast. Each flag is a prompt to verify the cited records, not a prediction or allegation.
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.
If you own it
2 open violations: the clock matters
Most L&I appeals must be filed within 30 days; unsafe or imminently dangerous orders can carry a shorter deadline. Unresolved notices can lead to fees, court enforcement, City abatement work, and liens. Read the dated notice and verify its current status with L&I.
If you’re the landlord
If it is rented, verify the Rental License
The fetched license records do not show an active Rental License. Ownership type or a tax mailing address does not prove that tenants occupy the property; if it is rented, verify the current license and legal occupancy in eCLIPSE.
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.
Who's behind it
West Diamond Estates LLC · corporate / LLC owner
• Tax bills mail to 1006 E Rittenhouse St, Philadelphia PA, 19138
The investment read
How this building 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
$421,900
2026 billed-year assessment · 2027: $437,700 · built 1915
Price / sq ft
$160
block $128 · above block
Appreciation
+14%
+1%/yr, city 6.5%
In 5 years (~2031)
~$438K
+1%/yr own pace held 5 yrs — extrapolation, not a forecast
Est. tax bill / yr
$5,906
1.35% effective
Jun 2022 tax snapshot
No match
not proof the account is current
Gross yield
—
Times sold
7
Value vs. the block, over time — sales, permits & L&I events marked on the line
This houseBlock median & rangeSaleL&I violationPermitInspection
The paper trail
Renovated & sold onBought for $270K in 2015, plumbing permit in 2017, sold for $879K in 2025 (+1252%).
- 2015 16 L&I violationsL&I$270KSold
- 2016 Inspection passed ×2L&I visit
- 2017 PlumbingPermit
- 2018 $345KSold$345KSold
- 2020 9 L&I violationsL&IInspection failed ×2L&I visit
- 2021 Inspection passedL&I visit
- 2025 $879KSold
- 2026 2 L&I violationsL&IInspection failed ×2L&I visit
Flags: 2 open L&I violations. 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
9
Bathrooms
3
Stories
3
Interior
2,736 sqft
livable area
Lot
1,344 sqft
Basement
Full
city code D
Heat
Forced hot air
city code A
Central air
Yes
Exterior condition
Average
city code 4
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 1816 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 the area median. Assessed value is not an asking price — set the price slider to the real one.
When this house last sold (2025) a 30-year mortgage ran about 6.6% — 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, $1,400/yr insurance, 1% of price/yr maintenance; taxes use this parcel's taxable assessment, not a live Tax Center balance.
Block context
1816 Diamond St sits on the 1800 block of Diamond St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 1814 Diamond St · 1818 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, 1:41 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)