New construction
Why it mattersBought for $55K in 2018, built new under a 2019 permit (tax-abated), sold for $600K in 2022.
View supporting records →Multi-family report
821 Diamond St
5 bd · 5 ba · 3 stories · 2,314 sqft · CMX2 · built 2022
Absentee individual · assessed $725K · 2 licensed units · sold 3×. On the 800 block of Diamond St.
Property summary
Assessment$725KCity assessed value
Last sale$600KRecorded 2022
Est. annual tax$2K/yearAssessment × 1.3998%
Tax delinquency—Snapshot unavailable
Permits6Shown in this report
ViolationsNone openNo open L&I cases
What stands out
From the public recordWhat 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.
Post-purchase work pattern
A recorded purchase followed by 1 permit event matches the early part of a renovate-and-resell sequence.
Evidence: purchase recorded in 2022 · permit activity in 2024
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
The current tax estimate is temporary
The taxable assessment implies about $2,030/yr under a 10-year abatement. It jumps to about $10,149/yr in 2032 — $8,119/yr more. Underwrite the post-abatement estimate and verify the actual bill with Revenue.
If you’re the landlord
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 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
$725K
built 2022
Price / sq ft
$313
block $205 · above block
Appreciation
+11983%
+55%/yr, city 6.5%
In 5 years (~2031)
~$745K
+55%/yr own pace held 5 yrs — extrapolation, not a forecast
Est. tax / yr
$2K
0.28% effective, abated
Jun 2022 tax snapshot
—
Gross yield
1.9%
≈$1K/mo rent
Times sold
3
licensed rental
Value vs. the block, over time — sales, permits & L&I events marked on the line
This houseBlock median & rangeSaleLand buyL&I violationPermit
The paper trail
New constructionBought for $55K in 2018, built new under a 2019 permit (tax-abated), sold for $600K in 2022.
- 2018 $55KLand buy
- 2019 $72KLand buyNew ConstructionPermit
- 2020 New ConstructionPermit
- 2021 New ConstructionPermitNew ConstructionPermitNew Construction or AdditionsPermit
- 2022 $600KSold
- 2023 2 L&I violations incl UNSAFE STRUCTUREL&IInspection failedL&I visit
- 2024 Make Safe Permit For RPPermitInspection passedL&I visit
Flags: tax-abated — the bill lags real value · active rental license · 1 zoning/board appeal on record. Informational only — not investment advice or a consumer report (FCRA).
The abatement clock
This house’s taxable assessment implies about $2,030/yr under a 10-year tax abatement. In 2032 the assessment-based estimate reaches ~$10,149/yr — a step up of $8,119/yr, 5 assessment years out. Drag the slider.
now: ($725,000 assessed − $579,979 abated) × 1.3998% ≈ $2,030/yr
2032: $725,000 assessed × 1.3998% ≈ $10,149/yr
Flat 100% exemption (pre-2022 program, started 2022), then the cliff — reassessments move both lines. After expiry an owner-occupant can claim the Homestead Exemption (~$1,400/yr off); an abated home can't hold both.
The house, on paper
The city assessor's field record — the physical spec sheet behind the assessed number.
Bedrooms
5
Bathrooms
5
Stories
3
Interior
2,314 sqft
livable area
Lot
945 sqft
Basement
Full, finished
city code A
Heat
Forced hot air
city code A
Central air
Yes
Exterior condition
Newer construction
city code 1
Newer construction
Interior condition
Newer construction
city code 1
Newer construction
Zoning
CMX2
city zoning code
Zoning appeals
1
granted 2016
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Run the numbers
What owning 821 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 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.
When this house last sold (2022) a 30-year mortgage ran about 5.34% — 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 (with the abatement toggle above).
Block context
821 Diamond St sits on the 800 block of Diamond St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 819 Diamond St · 817 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 821 Diamond St,
on paper.
Built 2022. 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)