Renovated & sold on
Why it mattersBought for $12K in 2006, plumbing permit in 2007, sold for $47K in 2020 (+289%).
View supporting records →House report
4507 N Gratz St
1 ba · 2 stories · 1,224 sqft · RM1 · built 1925
Absentee individual · assessed $110K · sold 2×. On the 4500 block of N Gratz St.
Property summary
Assessment$110KCity assessed value
Last sale$47KRecorded 2020
Est. taxes$2K/yearAnnual city record
Permits3Shown in this report
ViolationsNone openNo open L&I cases
What stands out
From the public recordWhat 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 1925: 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
$1,220 in back taxes on record
Interest and penalties keep compounding until a Revenue payment agreement is in place, and a lien is already filed — an owner-occupant agreement also stops the sheriff-sale track.
If you’re the landlord
Lead certificate is not optional
Built 1925: 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 this house's public records and the city's rules as of 2026 (abatement ordinance, Homestead, rental licensing, lead certification, L&I process, excavation protections). 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
$110K
built 1925
Price / sq ft
$90
block $93 · in line w/ block
Appreciation
+71%
+5%/yr, city 6.5%
In 5 years (~2031)
~$111K
+5%/yr own pace held 5 yrs — extrapolation, not a forecast
Est. tax / yr
$2K
1.4% effective
Gross yield
-7252946.5%
≈$-667M/mo rent
Times sold
2
licensed rental
Value vs. the block, over time — sales, permits & L&I events marked on the line
This houseBlock median & rangeSalePermit
The paper trail
Renovated & sold onBought for $12K in 2006, plumbing permit in 2007, sold for $47K in 2020 (+289%).
- 2006 $12KSold
- 2007 PlumbingPermitAlterationPermitElectricalPermit
- 2020 $47KSold
Flags: active rental license · $1K back taxes (2016, $26 of it interest & penalties, lien filed). Informational only — not investment advice or a consumer report (FCRA).
The house, on paper
The city assessor's field record — the physical spec sheet behind the assessed number.
Bathrooms
1
Stories
2
Interior
1,224 sqft
livable area
Lot
1,266 sqft
Exterior condition
Average
city code 4
Above averageBelow average
Interior condition
Average
city code 4
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 4507 N Gratz St takes, at your price and your rate. Taxes are this house's actual bill from the city record; 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 (2020) a 30-year mortgage ran about 3.1% — 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 from this parcel's record.
Block context
4507 N Gratz St sits on the 4500 block of N Gratz St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 4505 N Gratz St · 4509 N Gratz 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
- Back taxes & liens — Real Estate Tax Balances, Dept. of 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
City datasets are fetched live from OpenDataPhilly (phl.carto.com) and cached briefly. Dossiers re-pull automatically — on view once they're a few weeks old, plus a nightly rolling sweep — and citywide benchmarks recompute weekly. AI-written passages are generated from these records only and rejected if they state a number the record doesn't hold.
First time here?
This is 4507 N Gratz St,
on paper.
Built 1925. Every deed, permit, L&I visit, tax bill and sale for this house — plus its whole block.
No signup, no teaser
The whole record is free.
Permits, violations, taxes, deeds, ownership, and block context are all here. The public record is free to read; membership is for deeper research.
Three taps, you're oriented
What to catch on the way down.
On the way down: the story of the house, its paper trail drawn on the value chart, and run-the-numbers, a calculator seeded with this house's actual tax bill.
Official city record ↗ · L&I history ↗ · See the whole block · Download this record (JSON)