The Block Report

Multi-family report

4037 Brown St

6 bd · 3 ba · 3 stories · 1,968 sqft · RM1 · built 1915

Owner-occupied · assessed $405K · sold 2×. On the 4000 block of Brown St.

Property summary

Assessment$405KCity assessed value Last sale$600KRecorded 2023 Est. annual tax$1K/yearAssessment × 1.3998% Tax delinquency—Snapshot unavailable Permits7Dated events in report ViolationsNone openNone open when assembled

“Open” reflects records available then historical records keep their source dates estimates are labeled

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Street view of 4037 Brown St
From the street — imagery © Google
From above — imagery © Esri, Maxar

What stands out

From the public record
Finding

New construction

Why it matters

Bought for $556K in 2017, built new under a 2018 permit (tax-abated), sold for $600K in 2023.

View supporting records →

Records 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.

Dated record flagAssessment/permit mismatch

The assessment jumped 2169% in 2023, but no matching permit appears in the property timeline.

Evidence: assessment moved from $25,100 to $569,400 · no permit shown in 2022-2024

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

The current tax estimate is temporary

The taxable assessment implies about $1,142/yr under a 10-year abatement. The estimate steps up every year and reaches about $5,662/yr in 2033 — $4,520/yr more. Underwrite the post-abatement estimate and verify the actual bill with Revenue.

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

When the abatement ends, file for Homestead

An abated home cannot also take the Homestead Exemption. From 2033 it can — knocking about $1,400/yr off the full bill.

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
$405K
built 1915
Price / sq ft
$206
block $71 · above block
Appreciation
+1985%
+32%/yr, city 6.5%
In 5 years (~2031)
~$411K
+32%/yr own pace held 5 yrs — extrapolation, not a forecast
Est. tax / yr
$1K
0.28% effective, abated
Jun 2022 tax snapshot
—
Gross yield
3.8%
≈$1K/mo rent
Times sold
2

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

$0$500K$1.0M2017: L&I: 6 failed, 2 passed 2017: Sold $556K2018: Use 2018: Major alteration 2018: L&I: 1 failed, 1 passed 2018: Mechanical 2018: Electrical 2018: Plumbing2019: Electrical 2019: Administrative 2019: Inspection passed2023: Sold $600K$405K201620222027
This houseBlock median & rangeSalePermit

The paper trail

New construction

Bought for $556K in 2017, built new under a 2018 permit (tax-abated), sold for $600K in 2023.

  1. 2017 L&I: 6 failed, 2 passedL&I visit$556KSold
  2. 2018 UsePermitMajor alterationPermitL&I: 1 failed, 1 passedL&I visitMechanicalPermitElectricalPermitPlumbingPermit
  3. 2019 ElectricalPermitAdministrativePermitInspection passedL&I visit
  4. 2023 $600KSold

Flags: tax-abated — the bill lags real value. Informational only — not investment advice or a consumer report (FCRA).

The abatement clock

This house’s taxable assessment implies about $1,142/yr under a 10-year tax abatement that steps down every year. In 2033 the assessment-based estimate reaches ~$5,662/yr — a step up of $4,520/yr, 6 assessment years out. Drag the slider.

2016: ~$272/yr2017: ~$272/yr2018: ~$272/yr2019: ~$339/yr2020: ~$351/yr2021: ~$351/yr2022: ~$351/yr2023: ~$1,608/yr2024: ~$1,608/yr2025: ~$1,346/yr2026: ~$1,346/yr2027: ~$1,142/yr2028: ~$1,895/yr (projected)2029: ~$2,649/yr (projected)2030: ~$3,402/yr (projected)2031: ~$4,155/yr (projected)2032: ~$4,909/yr (projected)2033: ~$5,662/yr (projected)2034: ~$5,662/yr (projected)201620332034
2027~$1,142/yrestimated from assessment

now: ($404,500 assessed − $322,917 abated) × 1.3998% ≈ $1,142/yr 2033: $404,500 assessed × 1.3998% ≈ $5,662/yr The abated slice shrinks ~10% a year (post-2022 program, started 2023) — 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
6
Bathrooms
3
Stories
3
Interior
1,968 sqft
livable area
Lot
1,440 sqft
Basement
Full, finished
city code A
Heat
Forced hot air
city code A
Central air
Yes
Exterior condition
New / rehabbed
city code 2
New / rehabbed
Interior condition
New / rehabbed
city code 2
New / rehabbed
Quality grade
C+
assessor's grade
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 4037 Brown 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.

$600K
20%
6.875%
$1K/mo

When this house last sold (2023) a 30-year mortgage ran about 6.81% — 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

4037 Brown St sits on the 4000 block of Brown St. Open the block report to compare its parcels, ownership and public-record history.

See the whole block →

Next door: 4035 Brown St  ·  4033 Brown St

Where this comes from
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)