2026 taxable assessment $706,900 × 1.3998%. Estimate—not a bill or account balance.
OPA also publishes a 2027 assessment of $627,400; it is not the 2026 billed-year value.
Multi-family report
1623 Diamond St
13 bd · 8 ba · 3 stories · 3,642 sqft · RM1 · built 1915
Investor / LLC · assessed $707K (2026) · 2027 OPA assessment $627K · 4 licensed units · sold 2×. On the 1600 block of Diamond St.
Property summary
Assessment$706,9002026 OPA assessment · 2027: $627,400
Last sale—No sale value available
Est. tax bill$9,895/year2026 taxable assessment × 1.3998%
Tax delinquencyNo 2022 matchNot proof account is current
Permits7Every fetched City permit
Violations0 open13 historical across 7 cases
“Open” reflects records available then historical records keep their source dates estimates are labeled
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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 3210436002026 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 recordImproved
Why it mattersOwner pulled a suppression permit in 2012.
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
- 1600 Diamond Street LLC
- Tax mailing address
- 1135 COOKE AVE, CLAREMONT CA, 91711
- L&I district
- NORTH
- Building ID (BIN)
- 1004457
- OPA account
- 321043600
Permits7Every dated permit
Violation cases713 violation records · 0 open
Investigations1910 failed · 5 passed · 4 closed
Building certifications1Latest result: Certified
Business licenses22 active
Appeals0No match
PermitsPermit number, issued date, work and City status7
Zoning/usePermit 408961
Jun 28, 2012 COMPLETED Completed Jun 28, 2012
REMOVE REAR PORTION & REBULD WITH 3 STORY ATTACHED STRUCTURE WITH CELLAR FOR USE AS A FOUR (4) FAMILY DWELLINTG
AdditionPermit 417229
Aug 8, 2012 COMPLETED Completed Aug 27, 2013
DEMO LITION OF REAR PORTION AND ERECTION OF A THREE STORY STRUCTURE WITH CELLAR, REMOVING 2ND FLOOR BAY AT REAR AND FOR THE ERECTION OF A 3 STORY ADDITION WITH CELLAR AT REAR FOR USE AS A FOUR FAMILY DWELLING.
PlumbingPermit 434015
Oct 22, 2012 COMPLETED Completed Aug 27, 2013
INSTALL ALL SANITARY WASTE DRAINS AND ALL WATER SUPPLY TO ALL FIXTURES, 3 KS, 6 WC, 6 LAVS, 6 TUBS, 3 HWH, 3 WM (4 FAMILY)
ElectricalPermit 430326
Oct 31, 2012 COMPLETED Completed Jan 6, 2016
INSTALL 400A SERVICE AND COMPLETE REWIRE THROUGHOUT IN ACCORDANCE WITH 2008 NEC.INSTALL NE FA SYSTEM IN ACCORDANCE WITH NFPA-72.(4FD)(NORTH DIST)
PlumbingPermit 436724
Nov 7, 2012 COMPLETED Completed Aug 27, 2013
REPLACE 5" LATERAL, INSTALL 5" CURB TRAP, & FRESH AIR INLET, REPLACE 3/4" WATER SERVICE PA20123120221 (MULTI FAMILY)
MechanicalPermit 436424
Nov 8, 2012 COMPLETED Completed Aug 27, 2013
INSTALL (4) 2-TON HEATPUMPS WITH A/C AND ASSOCIATED DUCTWORK. HVAC CONDENSOR TO BE LOCATE IN REAR YARD. NO WORK ON ROOF OR FRONT FACADE. (4-FAMILY DWELLING)
SuppressionPermit 425829
Nov 26, 2012 COMPLETED Completed Aug 27, 2013
INSTALLATION OF FIRE SUPPRESSION SYSTEM PER NFPA 13R AS PER PLANS.
Violation cases13 individual violation records; resolved history remains visible7
Case 153663CLOSED
STANDARD · Opened Apr 1, 2008 · completed Jun 27, 2012
- PROSEC- STD INFOViolation 894446Mar 28, 2008 CMPLY
- VACANT PROP STANDARDViolation 894448Mar 28, 2008 CMPLY
- LICENSE-VAC RES BLDGViolation 894447Mar 28, 2008 CMPLY
Case 347598CLOSED
CONSTRUCTION SERVICES · Opened Aug 30, 2012 · completed Jun 10, 2016
- DEBRIS REMOVE - CONSTRViolation 2559598Aug 29, 2012 COMPLIED
- WORKMANLIKE- BUILDING CODEViolation 2559597Aug 29, 2012 COMPLIED
- LISTED CONDIT DOES NOT COMPLYViolation 2559599Aug 29, 2012 COMPLIED
- SWO- CONSTR W/O BLDG PERMITViolation 2561522Aug 30, 2012 COMPLIED
Case 349987CLOSED
CONSTRUCTION SERVICES · Opened Sep 13, 2012 · completed Oct 15, 2019
- LISTED CONDIT DOES NOT COMPLYViolation 2574694Sep 12, 2012 CLOSEDCASE
Case 361100CLOSED
CONSTRUCTION SERVICES · Opened Nov 29, 2012 · completed Jul 17, 2013
- WORKMANLIKE- ELECTRICAL CODEViolation 2653175Nov 29, 2012 COMPLIED
Case 456577CLOSED
STANDARD · Opened Oct 11, 2014 · completed Jul 20, 2016
- FIRE DEPT CONNECT REP DAM CAPSViolation 3571808Oct 11, 2014 COMPLIED
- ANNUAL CERT FIRE ALARMViolation 3571809Oct 11, 2014 COMPLIED
Case 483599CLOSED
STANDARD · Opened Jun 3, 2015 · completed Nov 22, 2017
- ANNUAL CERT FIRE ALARMViolation 4467849May 7, 2016 COMPLIED
Case 417229CLOSED
Opened Date unavailable
- PERM - MUST POSTViolation 2720678Feb 20, 2013 COMPLIED
InvestigationsEvery inspector visit, including CLOSED outcomes19
BRU INSPCase 153663
Mar 28, 2008 FAILED
BRU INSPCase 153663
Jun 27, 2012 CLOSED
BP_BLDGCase 347598
Aug 29, 2012 FAILED
BP_BLDGCase 349987
Sep 12, 2012 FAILED
BP_BLDGCase 347598
Sep 17, 2012 PASSED
BP_BLDGCase 361100
Nov 29, 2012 FAILED
BP_BLDGCase 361100
Jul 16, 2013 PASSED
HCEU INSPCase 456577
Oct 11, 2014 FAILED
HCEU INSPCase 456577
Nov 22, 2014 FAILED
HCEU INSPCase 456577
Jan 11, 2015 CLOSED
PRECOURTCase 456577
May 26, 2015 FAILED
PRECOURTCase 456577
Jun 3, 2015 CLOSED
HCEU INSPCase 483599
May 7, 2016 FAILED
HCEU INSPCase 483599
May 9, 2017 FAILED
HCEU INSPCase 483599
Jun 14, 2017 CLOSED
PRECOURTCase 483599
Sep 27, 2017 FAILED
PRECOURTCase 483599
Oct 2, 2017 PASSED
PRECOURTCase 483599
Oct 2, 2017 PASSED
BP_BLDGCase 349987
Oct 15, 2019 PASSED
Building certificationsInspection result and filed expiration date by L&I building ID1
Sprinkler CertificationCertification BC-2021-005794
Inspected Jul 15, 2021 Certified Expires Jul 15, 2022
Business licensesHistorical and active licenses are both retained2
RentalLicense 615770
SABAH KHADIUM
Revenue code 3202 · First issued Jan 23, 2014 Active Expiration Feb 28, 2027
Dumpster License - Private PropertyLicense 723897
ALBERTO PRATS (PRATS MINI MARKET LLC)
Revenue code 3230 · First issued Dec 21, 2016 Active
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
6 verify
1 favorable dated record
Resolve before relyingZoning approval is not the occupancy fileUse permit #408961: COMPLETED.
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 life-safety certification appears expiredSprinkler Certification: Certified through Jul 15, 2022
Why it mattersFire-protection certifications apply to the named system and inspection period only; they are not a whole-building safety certificate. Philadelphia generally requires annual sprinkler, standpipe, fire-alarm, special-hazard, and emergency-power inspections where those systems exist.
Verify nextRequest the correction/reinspection and current filed 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 (1135 COOKE AVE, CLAREMONT CA, 91711).
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 condition10 failed, 5 passed, and 4 CLOSED investigation outcomes are in the fetched history; the latest dated visit was PASSED on Oct 15, 2019.
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 ↗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 ↗Favorable dated recordNo open violation; closed history remains relevantThe fetched record shows 0 open and 13 historical violations across 7 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.
Who's behind it
1600 Diamond Street LLC · corporate / LLC owner
• Tax bills mail to 1135 Cooke Ave, Claremont CA, 91711 — outside Philadelphia
• Holds an active rental license for this address
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
$706,900
2026 billed-year assessment · 2027: $627,400 · built 1915
Price / sq ft
$172
block $160 · above block
Appreciation
+57%
+5%/yr, city 6.5%
In 5 years (~2031)
~$629K
+5%/yr own pace held 5 yrs — extrapolation, not a forecast
Est. tax bill / yr
$9,895
1.58% effective
Jun 2022 tax snapshot
No match
not proof the account is current
Gross yield
—
Times sold
2
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
ImprovedOwner pulled a suppression permit in 2012.
- 2012 PlumbingPermitElectricalPermitPlumbingPermitMechanicalPermitSuppressionPermit
- 2013 L&I violationL&I
- 2014 2 L&I violationsL&I
- 2015 Inspection failedL&I visit
- 2016 L&I violationL&IInspection failedL&I visit
- 2017 L&I: 2 failed, 2 passedL&I visit
- 2019 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.
Bedrooms
13
Bathrooms
8
Stories
3
Interior
3,642 sqft
livable area
Lot
1,783 sqft
Central air
Yes
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 1623 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.
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
1623 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: 1621 Diamond St · 1625 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)