The Block Report

Multi-family report

851 E Chelten Ave

4 bd · 2 ba · 2 stories · 2,292 sqft · RM1 · built 1915

Investor / LLC · assessed $154K (2026) · 2027 OPA assessment $239K · 2 licensed units · sold 1×. On the 800 block of E Chelten Ave.

Property summary

Assessment$153,5002026 OPA assessment · 2027: $238,500 Last sale$17KRecorded 2013 Est. tax bill$2,149/year2026 taxable assessment × 1.3998% Tax delinquencyNo 2022 matchNot proof account is current Permits4Every fetched City permit Violations0 open2 historical across 1 case

“Open” reflects records available then historical records keep their source dates estimates are labeled

BlockReport AI · cited public records

Ask the questions this record raises.

Every choice opens the research chat with this property already in context. Curated questions are free.

Opens the research chat · 3 custom questions per browser
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:

Street view of 851 E Chelten Ave
From the street — imagery © Google
From above — imagery © Esri, Maxar

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$2,149/year

2026 taxable assessment $153,500 × 1.3998%. Estimate—not a bill or account balance.

OPA also publishes a 2027 assessment of $238,500; 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 591012100
Open Philadelphia Tax Center →Choose “View period balance” to see the tax year and any credit, interest, or delinquency.
Exemption classificationNo exemption shown

2026 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 record

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’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

Kosacci Group LLC · corporate / LLC owner

• Tax bills mail to 20 Aspen Dr, Ivyland PA, 18847 — outside Philadelphia
• Holds an active rental license for this address

PA corporate registry ↗OpenCorporates ↗City record ↗

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
$153,500
2026 billed-year assessment · 2027: $238,500 · built 1915
Price / sq ft
$104
block $92 · above block
Appreciation
+65%
+5%/yr, city 6.5%
In 5 years (~2031)
~$239K
+5%/yr own pace held 5 yrs — extrapolation, not a forecast
Est. tax bill / yr
$2,149
0.9% effective
Jun 2022 tax snapshot
No match
not proof the account is current
Gross yield
6.4%
≈$1K/mo rent
Times sold
1
licensed rental

Value vs. the block, over time — sales, permits & L&I events marked on the line

$0$100K$200KBefore this chart — 2011: New Construction 2013: Sold $17K 2013: 2 L&I violations 2013: Use 2013: Major alteration 2013: L&I: 1 failed, 1 passed 2013: Major alteration$154K201620182020202220242026
This houseBlock median & rangePermit

The paper trail

New construction

built new under a 2011 permit, sold for $17K in 2013.

  1. 2011 New ConstructionPermit
  2. 2013 $17KSold2 L&I violationsL&IUsePermitMajor alterationPermitL&I: 1 failed, 1 passedL&I visitMajor alterationPermit

Every dated deed, permit, inspection, license, violation, certification, and appeal—together.

The timeline combines the report’s transfer history with every successfully fetched L&I and zoning row. A date or status is the City’s filed record, not a statement that the condition remains current; use the official file for live detail.

Open the City record ↗
Recorded owner
Kosacci Group LLC
L&I district
NORTH
OPA account
591012100

What this record suggests

The City file documents 4 permits touching drywall / interior finishing, electrical work, plumbing, roof work. 2 carries a completed, issued, or approved status; that documents the filing, not the present quality of the work.

  1. InvestigationCSUINITIAL

    Case 393169 · PASSED

  2. PermitMajor alteration

    Permit 489079 · CLOSED

    DRYWALL OVER PLASTER, NEW DOORS IN EXISTING OPENINGS, STUCCO OF BRICK WALLS. EZ ALTERATIONS PERMIT INTERIOR ALTERATIONS - SINGLE FAMILY DWELLING - APPLICANT AGREES TO LIMIT THE CONSTRUCTION TO COMPLY WITH EZ PERMIT STANDARD FOR INTERIOR ALTERATIONS. SEPARATE PERMITS REQUIRED FOR PLUMBING, ELECTRIC AND HVAC

  3. PermitMajor alteration

    Permit 485433 · COMPLETED

    REPAIR BRICK WALL AND ROOF ABOVE IN FRONT OF BUILDING. STUCCO WALL

  4. ViolationWALL PARTIALLY COLLAPSED

    Case 393169 · Violation 2873316 · COMPLIED

  5. ViolationROOF DETERIORATED

    Case 393169 · Violation 2873317 · COMPLIED

  6. InvestigationCSUINITIAL

    Case 393169 · FAILED

  7. PermitUse

    Permit 483741 · COMPLETED

    USE TO 2FD

  8. LicenseRental

    License 599812 · Active

    KOSACCI GROUP, LLC (NEW OWNER AS OF 053113) · Expires 2027-02-28

  9. Recorded transfer$17K transfer

    2013

  10. PermitNew Construction

    Permit 375104 · Expired

    SFD-RELOCATE EXISTING METER FROM THE INSIDE OF THE HOME TO THE OUTSIDE OF THE HOME AS PER NEC 2008 (NORTH DISTRICT)

How Philadelphia’s property system works

These explainers are free because the record only helps if you know what it can—and cannot—prove. Use the linked City guidance for the controlling rule.

Permits and inspections 4 on this property

This property’s file includes Electrical, ZP_USE, BP_ALTER permit records. A permit documents authorized scope and a City process; it is not by itself proof that every described improvement was completed, remains in place, or meets today’s condition expectations.

L&I inspections are scheduled at defined stages; final inspection and required certifications are separate steps in closing out applicable work.

How construction and repair permits work ↗See City inspection stages by permit type ↗
Assessments and taxes

The OPA assessment is the City’s value on the tax roll—not an asking price, appraisal, or live account balance. The taxable assessment can differ from the full assessment because the City roll records exemptions or other treatment; the report keeps those fields separate.

Your annual estimate uses the taxable assessment. Payments, credits, interest, and the amount due are maintained separately in Tax Center.

How the Office of Property Assessment works ↗Philadelphia property-tax guidance ↗
Violations, cases, and status check current status

An open row is a dated City status, not a diagnosis of current condition or a conclusion about the property. Read the case, notice, and any subsequent inspection together, then verify the live file.

How L&I code enforcement works ↗City violation and order types ↗

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
4
Bathrooms
2
Stories
2
Interior
2,292 sqft
livable area
Lot
1,387 sqft
Basement
Full
city code D
Heat
Hot water / radiators
city code B
Central air
No
Exterior condition
Average
city code 4
Interior condition
Average
city code 4
Quality grade
C+
assessor's grade
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 851 E Chelten Ave 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 2 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.

$239K
20%
6.875%
$2K/mo

When this house last sold (2013) a 30-year mortgage ran about 3.98% — 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

851 E Chelten Ave sits on the 800 block of E Chelten Ave. Open the block report to compare its parcels, ownership and public-record history.

See the whole block →

Next door: 849 E Chelten Ave  ·  853 E Chelten Ave

Where this comes from
Methodology & freshness

This report was assembled Jul 10, 2026, 6:00 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)