Multi-family report

1727 Mifflin St

4 bd · 3 ba · 3 stories · 1,992 sqft · RM1 · built 1920

Owner-occupancy signal · assessed $499K (2026) · 2027 OPA assessment $504K · sold 3×. On the 1700 block of Mifflin St.

Street view of 1727 Mifflin St
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BlockReport AI · cited public records

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Property summary

“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:

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.

Estimated annual Real Estate Tax$3,709/year

2026 taxable assessment $264,988 × 1.3998%. Estimate—not a bill or account balance.

OPA also publishes a 2027 assessment of $504,100; it is not the 2026 billed-year value.

Official current account balanceCheck live

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 481054000
Open Philadelphia Tax Center →Choose “View period balance” to see the tax year and any credit, interest, or delinquency.
Exemption classificationPartial assessment exemption — basis unverified

2026 OPA taxes $264,988 of $499,300 assessed. The assessment fields alone do not identify a program, approval date, expiration, or buyer eligibility.

See the assessment math →
Full-assessment scenario$6,989/year

Applying the same rate to the billed-year full assessment. OPA's numeric split does not say when or whether the current treatment changes.

See the assessment math →
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 record
Finding

Permit between transfers

Record summary

$519K transfer in 2021; major alteration permit in 2018; $519K transfer in 2021 (+25850% between recorded amounts).

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

Verify the current tax bill and exemption

The 2026 taxable assessment implies about $3,709/yr, while applying the same rate to the full assessment would imply about $6,989/yr — $3,280/yr more. OPA's assessment split does not establish the exemption program, expiration, or buyer eligibility. Verify the basis and live bill with OPA and Revenue.

Built 1920: 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

Verify which assessment relief applies

OPA shows a material assessment exemption, but this record does not identify its legal basis or transfer treatment. Ask OPA for the approval history; if the current treatment ends, an eligible owner-occupant may need to apply separately for Homestead relief.

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 building, 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
$499,300
2026 billed-year assessment · 2027: $504,100 · built 1920
Price / sq ft
$253
block $172 · above block
Assessment change
+266%
+13%/yr since 2016 · 2027 +1% vs 2026
Est. tax bill / yr
$3,709
0.74% effective, reduced taxable assessment
Jun 2022 tax snapshot
No match
not proof the account is current
Times sold
3

Assessment vs. the block and ZIP · every dated City record marked on the line

$0$500K$1.0MZIP 19145 median$504K201220152018202120242027
Property assessmentBlock median & rangeZIP 19145 medianAssessmentDeed / saleL&I violationAppealPermitInspectionLicense

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 record26 events · exact dates, newest first
  1. LicenseRental
  2. Deed / saleDeed / sale $519K
  3. InspectionPRECOURT (likely: pre-court compliance inspection)
  4. PermitElectrical
  5. PermitMajor alteration
  6. PermitMechanical
  7. InspectionBP_BLDG
  8. PermitSuppression
  9. L&I violationWORKMANLIKE- PLUMBING CODE
  10. L&I violationPENALTY- NO PLUMB PERM INFO
  11. L&I violationSTOP WORK ORDER
  12. L&I violationPERMP- INST NEW PLUMBING
  13. PermitElectrical
  14. PermitAdministrative
  15. PermitMajor alteration
  16. PermitUse
  17. InspectionPRECOURT (likely: pre-court compliance inspection)
  18. AppealZoning board appeal
  19. InspectionBP_BLDG
  20. InspectionBP_BLDG
  21. L&I violationPERMB- ALTER REPAIR INT PART (Building permit required for interior alteration or repair)
  22. L&I violationPERMB- INT DEMOL WALLS ETC
  23. L&I violationPENALTY- NO BLDG PERM INFO
  24. L&I violationSWO- CONSTR W/O BLDG PERMIT (Stop-work order for construction without a building permit)
  25. LicenseRental
  26. LicenseRental

The paper trail

$519K transfer in 2021; major alteration permit in 2018; $519K transfer in 2021 (+25850% between recorded amounts).

  1. 2018 Major alterationPermitInspection failedL&I visitAdministrativePermitElectricalPermit
  2. 2019 SuppressionPermitMajor alterationPermitMechanicalPermit4 L&I violationsL&IL&I: 1 failed, 1 passedL&I visitElectricalPermit
  3. 2020 Inspection passedL&I visit
  4. 2021 $519KTransfer

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.

Open the City record ↗
Browse 26 dated records deeds, permits, inspections, licenses, violations, certifications & appeals
  1. LicenseRental

    License 931011 · Inactive

    Joseph Switzer · Expires 2024-08-15 · Inactive 2024-10-14

  2. Recorded transfer$519K transfer

    2021

  3. InvestigationPRECOURT (likely: pre-court compliance inspection)

    Case 539365 · PASSED

    A follow-up before or during enforcement escalation; confirm the case sequence in the City file. The cited inspection visit was marked passed.

  4. PermitElectrical

    Permit 1025835 · COMPLETED

    INSTALL NEW FIRE ALARM SYSTEM AS PER ENGINEERING DRAWING, NEC 2008 AND 2007 NFPA 72 (SOUTH DIST)

  5. PermitMajor alteration

    Permit 954050 · COMPLETED

    LEVEL 2 ALTERATION TO COMPLIMENT PREVIOUS PERMITS 869782 & 895218 TO RENOVATE KITCHENS & BATHROOM CABINETS AND FINISHES IMPROVE CODE COMPLIANT FIRE RATED ASSEMBLEES BY LAMINATING 5/8 FR DRYWALL TO 1ST AND 2ND FLOOR CEILINGS AND STAIRWELL WALLS REPLACE MISC WINDOWS WITH SAME SIZE AS PER EZ STANDARD LIMITED COMMERCIAL ALTERATIONS & REPAIRS INFO-

  6. PermitMechanical

    Permit 954055 · COMPLETED

    INSTALL 3 NEW HVAC SYSTEMS EACH SYSTEM COMPLETELY WITHIN THE UNIT AS FOLLOWS: UNIT 1 (BSTM & 1ST FLOOR) 80%-60K &1.5T AC / UNIT 2 REAR MINISPLIT UNIT 3 (2ND FRT AND 3RD FLOOR FRONT 90%- 70K & 1.5T AC OUTDOOR UNITS IN REAR YARD. INSTALLED AS PER MANUFACTURER'S INSTRUCTIONS, FUEL GAS CODE AND EZ STANDARDS CONTRACTOR RESPONISBLE FOR CONDITION AND CAPACITY OF MASONRY CHIMNEY CELLER HAS ALL 3 EXT'G HOT WATER HEATERS

  7. InvestigationBP_BLDG

    Case 671595 · PASSED

    The cited inspection visit was marked passed.

  8. PermitSuppression

    Permit 940658 · COMPLETED

    FOR THE INSTALLATION OF A TWO (2) INCH FIRE SERVICE LINE WITH A TWO (2) INCH BACKFLOW PREVENTER AND AUTOMATIC FIRE SUPPRESSION SYSTEM AS PER NFPA 13 AND NFPA 13R. ALL WORK SHALL BE DONE IN ACCORDANCE WITH APPROVED PLANS/HYDRAULIC CALCULATIONS.

  9. ViolationWORKMANLIKE- PLUMBING CODE

    Case 671595 · Violation 4934280 · Code A-104.1/4 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  10. ViolationPENALTY- NO PLUMB PERM INFO

    Case 671595 · Violation 4934283 · Code A-901.13/3 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  11. ViolationSTOP WORK ORDER

    Case 671595 · Violation 4934282 · Code A-504.1/1 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  12. ViolationPERMP- INST NEW PLUMBING

    Case 671595 · Violation 4934281 · Code A-301.1/54 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  13. InvestigationBP_BLDG

    Case 671595 · FAILED

    The cited inspection visit was marked failed; later rows may show follow-up or resolution.

  14. PermitElectrical

    Permit 932343 · COMPLETED

    INSTALL 200AMP SERVICE WITH 4-GANG METER SOCKET, HOUSE PANEL 60AMP AND 3-100AMP SUB PANEL AND PUT HALLWAY LIGHTS ON HOUSE PANEL AS PER NEC 2008 SOUTH DISTRICT

  15. PermitAdministrative

    Permit 895218 · COMPLETED

    FOR THE AMENDMENT OF PREVIOUSLY APPROVED BUILDING PERMIT #869782 TO INCLUDE THE INTERIOR RENOVATION OF THE EXISTING RESIDENTIAL UNITS. NO CHANGE TO BUILDING HEIGHT OR AREA. ORIGINAL PERMIT APPROVED FOR LEVEL II ALTERATIONS TO INCLUDE INTERIOR FIT OUT OF A PREVIOUSLY VACANT UNIT INTO A RESIDENTIAL UNIT WITHIN AN EXISTING STRUCTURE, CHANGING THE OCCUPANCY FROM AN R-3 TO AN R-2 OCCUPANCY. BUILDING TO BE FULLY SPRINKLERED. ALL WORK TO BE DONE PER APPROVED PLANS. IF FIELD CONDITIONS VARY CONTACT DESIGN PROFESSIONAL PRIOR TO THE START OF ANY WORK. SEPARATE PERMITS REQUIRED FOR ALL OTHER WORK.

  16. PermitMajor alteration

    Permit 869782 · COMPLETED

    FOR LEVEL II ALTERATIONS TO INCLUDE INTERIOR FIT OUT OF A PREVIOUSLY VACANT UNIT INTO A RESIDENTIAL UNIT WITHIN AN EXISTING STRUCTURE, CHANGING THE OCCUPANCY FROM AN R-3 TO AN R-2 OCCUPANCY. BUILDING TO BE FULLY SPRINKLERED. ALL WORK TO BE DONE PER APPROVED PLANS. IF FIELD CONDITIONS VARY CONTACT DESIGN PROFESSIONAL PRIOR TO THE START OF ANY WORK. SEPARATE PERMITS REQUIRED FOR ALL OTHER WORK.

  17. PermitUse

    Permit 807744 · COMPLETED

    APPLICATION FOR LEGALIZATION OF AN EXISTING (3) THREE FAMILY DWELLING AT THE PROPERTY. THE PROPERTY IS LOCATED IN THE RM-1 ZONING DISTRICT AND IS APPROVED FOR A TWO-FAMILY DWELLING PER ZONING USE PERMIT NO. 160599.

  18. InvestigationPRECOURT (likely: pre-court compliance inspection)

    Case 539365 · 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.

  19. AppealZoning board appeal

    Appeal 31770 · OPEN · Granted

    Related permit 807744 · PERMIT FOR AN INCREASE FROM TWO (2) FAMILY HOUSEHOLD LIVING TO THREE (3) FAMILY HOUSEHOLD LIVING (MULTI-FAMILY) IN AN EXISTING STRUCTURE

  20. InvestigationBP_BLDG

    Case 539365 · CLOSED

    City marked the record closed; open the case for the closing reason.

  21. ViolationPERMB- ALTER REPAIR INT PART (Building permit required for interior alteration or repair)

    Case 539365 · Violation 4562526 · Code A-301.1/4 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  22. ViolationPERMB- INT DEMOL WALLS ETC

    Case 539365 · Violation 4562527 · Code A-301.1/7 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  23. ViolationPENALTY- NO BLDG PERM INFO

    Case 539365 · Violation 4562529 · Code A-901.13/1 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  24. ViolationSWO- CONSTR W/O BLDG PERMIT (Stop-work order for construction without a building permit)

    Case 539365 · Violation 4562528 · Code A-504.1/3 · COMPLIED

    City marked this violation complied with; check the resolution date and live case for what was accepted.

  25. LicenseRental

    License 604462 · Inactive

    GUY Y ALBALANCY · Expires 2016-02-29 · Inactive 2016-04-29

  26. LicenseRental

    License 572460 · Inactive

    D & M FLORIDA INVESTMENT LLC · Expires 2013-02-28

What this record suggests

The City file documents 8 permits touching kitchen work, bathroom work, drywall / interior finishing, electrical work. 8 carries a completed, issued, or approved status; that documents the filing, not the present quality of the work.

Flags: material assessment exemption — legal basis and term unverified · 1 zoning/board appeal on record. Informational only — not investment advice or a consumer report (FCRA).

The assessment exemption gap

OPA's 2026 taxable assessment implies about $3,709/year. Applying the same 1.3998% rate to the full assessed value would imply ~$6,989/year$3,280/year more. That is a scenario, not a forecast: the assessment split alone does not identify the exemption program, approval date, expiration, transfer treatment, or live Tax Center balance.

2016: ~$1,930/yr2017: ~$1,930/yr2018: ~$1,930/yr2019: ~$2,713/yr2020: ~$2,919/yr2021: ~$2,919/yr2022: ~$2,870/yr2023: ~$4,064/yr2024: ~$4,064/yr2025: ~$3,709/yr2026: ~$3,709/yr20162026
2026~$3,709/yrestimated from assessment

2026: ($499,300 assessed − $234,334 exempt) × 1.3998% ≈ $3,709/yr full-assessment scenario: $499,300 × 1.3998% ≈ $6,989/yr The OPA amount does not prove a ten-year abatement or any other specific program. Obtain the approval history and verify the current Tax Center account; a buyer should not assume the seller's relief transfers or restarts.

The property, on paper

The city assessor's field record — the physical spec sheet behind the assessed number.

Bedrooms
4
Bathrooms
3
Stories
3
Interior
1,992 sqft
livable area
Lot
1,040 sqft
Basement
Full, unfinished
city code C
Heat
Forced hot air
city code A
Central air
Yes
Exterior condition
Average
city code 4
Interior condition
New / rehabbed
city code 2
New / rehabbed
Quality grade
C+
assessor's grade
Zoning
RM1
city zoning code
Zoning appeals
1
OPEN · Granted · 2017

OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.

Run the numbers

What owning 1727 Mifflin 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.

$504K
20%
6.875%
$1K/mo

When this house last sold (2021) a 30-year mortgage ran about 2.96% — Freddie Mac's average that year.

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 with an optional full-assessment stress test, 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

1727 Mifflin St sits on the 1700 block of Mifflin St. Open the block report to compare its parcels, ownership and public-record history.

See the whole block →

Next door: 1725 Mifflin St  ·  1729 Mifflin St

Where this comes from

Methodology & freshness

This report was assembled Jul 11, 2026, 1:30 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)