Improved
Why it mattersBought for $35K in 2018. Owner pulled a addition and/or alteration permit in 2026.
View supporting records →House report
405 Diamond St
4 bd · 1 ba · 2 stories · 1,074 sqft · RM1 · built 1915
Absentee individual · assessed $87K · sold 2×. On the 400 block of Diamond St.
Property summary
Assessment$87KCity assessed value
Last sale$80KRecorded 2024
Est. annual tax$1K/yearAssessment × 1.3998%
Tax delinquency$647City snapshot · Jun 2022
Permits3Shown in this report
ViolationsNone openNo open L&I cases
Historical tax record
Verify the current balance before relying on it.
$647 was recorded for this parcel in Philadelphia's June 2022 delinquency snapshot. That amount may have been paid, reduced, or increased since; it is not a current payoff figure.
Verify current balance with Philadelphia Revenue →What stands out
From the public recordMarked vacant, but it just sold
Why it mattersThe assessor's condition code says vacant, yet a $80,000 sale was recorded in 2024. One side of the record is stale — condition codes come from drive-by field visits that can lag years behind.
View supporting records →What the record is signaling
Early patterns mined across this property's dated public records. Each flag shows what triggered it and where the inference stops.
Public-record pressure
More than one public record deserves a current-status check.
Evidence: $647 appeared in the City's June 2022 delinquency snapshot · failed L&I inspection activity in 2024, 2025
Limit: A screening signal, not a foreclosure prediction. Tax entries are historical and must be verified with Philadelphia Revenue.
Post-purchase work pattern
A recorded purchase followed by 3 permit events matches the early part of a renovate-and-resell sequence.
Evidence: purchase recorded in 2024 · permit activity in 2025, 2026
Limit: This does not show that the property is listed or that a sale is planned.
Transparent record rules, not a machine-learning forecast. A signal is a prompt to verify the cited record, 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
$647 in the June 2022 delinquency snapshot
The City recorded this amount in June 2022. It may since have been paid, reduced, or increased; verify the current balance directly with Philadelphia Revenue.
If you’re the landlord
No active rental license on file
If this property is rented, Philadelphia requires a Rental License (via eCLIPSE) — without it a landlord cannot legally collect rent or evict, and tenants can withhold. Licensing needs tax clearance and no open violations.
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
$87K
built 1915
Price / sq ft
$81
block $111 · below block
Appreciation
+146%
+9%/yr, city 6.5%
In 5 years (~2031)
~$88K
+9%/yr own pace held 5 yrs — extrapolation, not a forecast
Est. tax / yr
$1K
1.4% effective
Jun 2022 tax snapshot
$647
delinquency recorded then · verify current
Gross yield
9.7%
≈$705/mo rent
Times sold
2
Value vs. the block, over time — sales, permits & L&I events marked on the line
This houseBlock median & rangeSalePermitInspection
The paper trail
ImprovedBought for $35K in 2018. Owner pulled a addition and/or alteration permit in 2026.
- 2018 $35KSold4 L&I violationsL&IInspection failed ×3L&I visit
- 2019 Inspection passed ×2L&I visit
- 2024 $80KSold3 L&I violationsL&IInspection failed ×3L&I visit
- 2025 Inspection failedL&I visitAddition and/or AlterationPermit
- 2026 AlterationsPermitAddition and/or AlterationPermit
Flags: $647 recorded in the June 2022 delinquency snapshot — verify current balance. 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.
Bedrooms
4
Bathrooms
1
Stories
2
Interior
1,074 sqft
livable area
Lot
930 sqft
Basement
Full
city code D
Heat
Undetermined
city code H
Exterior condition
Below average
city code 5
Above averageBelow average
Interior condition
Vacant
city code 6
Vacant
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.
Where the record looks off
Places where the city's own paperwork disagrees with itself. These are flags on the data — not problems with the property.
Marked vacant, but it just sold
The assessor's condition code says vacant, yet a $80,000 sale was recorded in 2024. One side of the record is stale — condition codes come from drive-by field visits that can lag years behind.
Run the numbers
What owning 405 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 (2024) a 30-year mortgage ran about 6.72% — 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
405 Diamond St sits on the 400 block of Diamond St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 403 Diamond St · 407 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
Available City datasets are queried from OpenDataPhilly (phl.carto.com), then reports are cached and refreshed on a rolling schedule. Source dates vary: the parcel-level tax-delinquency snapshot is June 2022 and the separate detailed tax ledger ends in 2016, so neither establishes today’s balance. Other dossiers re-pull on view once stale, 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 405 Diamond St,
on paper.
Built 1915. 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 an assessment-based annual tax estimate.
Official city record ↗ · L&I history ↗ · See the whole block · Download this record (JSON)