Public Records
Edition
Philadelphia4100 block of K StJuly 9, 2026

House report

4136 K St

2 bd · 1 ba · 1 story · 615 sqft · RSA5 · built 1958

Investor / LLC · assessed $138K · sold 2×. On the 4100 block of K St.

Street view of 4136 K St
From the street — imagery © Google
From above — imagery © Esri, Maxar
The story of this houseAI · written from the public record

Reading this house's deeds, permits and assessments…

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 1958: 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.

Zoned RSA5: one household by right

Single-family rowhouse (the classic Philly row). Converting to a duplex or apartments needs a use variance the zoning board rarely grants — Pennsylvania courts require a physical hardship of the lot itself, and economics alone do not qualify.

If you’re the landlord

Lead certificate is not optional

Built 1958: 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.

Who's behind it

Advantage Realty Investment LLC · corporate / LLC owner

• Owns 7 properties across Philadelphia under this name, assessed at $1.1M combined
• Holds an active rental license for this address

PA corporate registry ↗OpenCorporates ↗City record ↗

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 analyst below to dig into any number.

Assessed value
$138K
built 1958
Price / sq ft
$225
block $211 · above block
Appreciation
+96%
+6%/yr, city 6.5%
In 5 years (~2031)
~$139K
+6%/yr own pace held 5 yrs — extrapolation, not a forecast
Est. tax / yr
$2K
1.4% effective
Gross yield
—
Times sold
2
licensed rental

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

$0$100K$200KBefore this chart — 2000: Sold $22K 2007: 3 L&I violations2022: Sold $60K$138K201620222027
This houseBlock median & rangeSalePermit
The paper trailTraded

Traded 2×: $22K in 2000 → $60K in 2022 (+173%).

  1. 2000 $22KSold
  2. 2007 3 L&I violationsL&I
  3. 2022 $60KSold

Flags: active rental license. 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
2
Bathrooms
1
Stories
1
Interior
615 sqft
livable area
Lot
1,283 sqft
Basement
Partial
city code H
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
RSA5
city zoning code

OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.

Run the numbers

What owning 4136 K 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.

$60K
20%
6.875%
$1K/mo

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.

Next door: 4134 K St  ·  4138 K St

Where this comes from

City datasets are fetched live from OpenDataPhilly (phl.carto.com) and cached briefly. 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)