New construction
Why it mattersbuilt new under a 2018 permit, sold for $418K in 2025.
View supporting records →Multi-family report
1815 S 20th St
5 bd · 4 ba · 2 stories · 2,040 sqft · CMX2 · built 1920
Owner-occupied · assessed $419K · 2 licensed units · sold 2×. On the 1800 block of S 20th St.
Property summary
Assessment$419KCity assessed value
Last sale$418KRecorded 2025
Est. annual tax$4K/yearAssessment × 1.3998%
Tax delinquency$5KCity snapshot · Jun 2022
Permits6Dated events in report
ViolationsNone openNone open when assembled
“Open” reflects records available then historical records keep their source dates estimates are labeled
BlockReport AI · cited public records
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Question or correct this record
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Historical tax record
Verify the current balance before relying on it.
$5K 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 recordRecords to verify together
Rule-based groupings across this property's dated public records. Each flag shows the records that belong in the same verification step 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 2025 · permit activity in 2025
Limit: This does not show that the property is listed or that a sale is planned.
Assessment/permit mismatch
The assessment jumped 64% in 2027, but no matching permit appears in the property timeline.
Evidence: assessment moved from $255,000 to $418,800 · no permit shown in 2026-2028
Limit: Not proof of unpermitted work; reassessment, corrected data, or a permit under another parcel can also explain it.
Transparent record rules, not a score or forecast. Each flag is a prompt to verify the cited records, 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 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
$5,038 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
Lead certificate is not optional
Built 1920: 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 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
$419K
built 1920
Price / sq ft
$205
block $144 · above block
Appreciation
+363%
+15%/yr, city 6.5%
In 5 years (~2031)
~$422K
+15%/yr own pace held 5 yrs — extrapolation, not a forecast
Est. tax / yr
$4K
1.07% effective
Jun 2022 tax snapshot
$5K
delinquency recorded then · verify current
Gross yield
4%
≈$1K/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 & rangeSaleZoningPermit
The paper trail
New constructionbuilt new under a 2018 permit, sold for $418K in 2025.
- 2018 New ConstructionPermit
- 2019 UsePermitNew ConstructionPermitAddition and/or AlterationPermitL&I: 1 failed, 1 passedL&I visit
- 2024 Change of UsePermitAppeal grantedZoning
- 2025 4 L&I violationsL&IAddition and/or AlterationPermitL&I: 1 failed, 1 passedL&I visit$418KSold
- 2026 Appeal completeZoning
Flags: active rental license · $5K recorded in the June 2022 delinquency snapshot — verify current balance · 2 zoning/board appeals on record. 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
5
Bathrooms
4
Stories
2
Interior
2,040 sqft
livable area
Lot
1,156 sqft
Basement
Full, finished
city code A
Heat
Forced hot air
city code A
Central air
Yes
Garage
2 spaces
Exterior condition
Average
city code 4
Above averageBelow average
Interior condition
New / rehabbed
city code 2
New / rehabbed
Quality grade
B
assessor's grade
ABCDE
Zoning
CMX2
city zoning code
Zoning appeals
2
complete 2026
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Run the numbers
What owning 1815 S 20th 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 (2025) a 30-year mortgage ran about 6.6% — 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
1815 S 20th St sits on the 1800 block of S 20th St. Open the block report to compare its parcels, ownership and public-record history.
See the whole block →Next door: 1813 S 20th St · 1817 S 20th 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.
Official city record ↗ · L&I history ↗ · See the whole block · Download this record (JSON)