Who owns your block
300 block of S 18th St
A mixed-ownership block: 38% owner-occupied, 38% investor-held, with 2 open code violations and 1 home behind $926 on taxes.
The typical home here is up 115% since 2016, now about $1.1M. Property taxes are climbing about 7% a year though the increases have eased lately.
- Owner-occupied
- Investor / LLC
- Absentee
- Vacant
- Has violations
By the Numbers
How fast it's moving
Assessed-value change for the typical home. Philadelphia taxes a flat 1.3998% of value, so the bill moves with it.
The makeup of the block
Every home, plotted by size and assessed value — press play and watch the block reprice from 2016 to 2027. One bubble per house (area = lot size), colored by who owns it; a gold ring marks tax-abated new construction. Click a bubble for its report.
- Owner-occupied
- Investor / LLC
- Absentee
- Vacant
- Tax-abated
- Bubble = lot size
- → bigger interior · ↑ higher value
Assessed values from the city's year-by-year assessment record — a proxy for price, lumpy in reassessment years.
How the block compares
The typical home here is $1.1M — about 4.9× the citywide median, and above the ZIP 19103 median of $608K. The same block, read against everyone else in the ZIP 19103 and across Philadelphia.
| This block | ZIP 19103 | Philadelphia | |
|---|---|---|---|
| Median home value | $1.1M | $608K | $223K |
| Owner-occupied | 24% | 28% | 41% |
Safety & quality of life
Within 200 metres of the block over the last 12 months: 68 reported crimes (18 violent) and 466 resident 311 requests to the city.
Most reported crimes
Top 311 complaints
Philadelphia Police incident reports and 311 service requests within 200m, trailing 12 months. Reported location, not necessarily where an incident occurred.
Schools
The public schools this block is zoned for — its official School District of Philadelphia catchments.
Catchment assignments from the School District of Philadelphia via City of Philadelphia open data. Confirm with the District before enrollment decisions.
What it's worth, and where taxes are going
- $1.1M typical home, up +115% since 2016
- Tax bill $6,691 to $13,977 a year, +7%/yr and compounding
- Whole block: $23M assessed, $296,134/yr to the city, about $14,102 per home
Median assessed value · 2016–2027
▲ +115% since 2016
Estimated property tax · per home, per year
▲ +109% since 2016 · ~+7%/yr
Who really pays — effective tax rate, one dot per home
339 S 18th St is assessed at $2.2M but pays $16,703 a year — about 55% of the $30,227 it would owe at the statutory rate, because its new-construction value is abated.
The block as an asset
Read like a financial asset, this block has beaten the Philadelphia market, compounding +7.2% a year against the city's 6.5%.
Indexed performance · this block vs. the Philadelphia market
Rebased to 100 in 2016, like a stock against its index. $100 in the typical home here would be worth $215 today versus $201 across Philadelphia — this block outpaced the market.
Return is from assessed-value history (a proxy for market price, lumpy in reassessment years); rental yield is estimated from ACS area rents. Informational only, not investment advice.
How often it changes hands
This block has recorded 28 arm's-length sales since 2000. The typical home has sold 1 time in that window, while 10 have not changed hands at all.
Every recorded sale · price & date
Who owns it
Ownership of 21 parcels
- Owner-occupied 8
- Investor / LLC 7
- Absentee individual 6
Value distribution today
| Owner | On block | Owns citywide | Portfolio value | Source |
|---|---|---|---|---|
| Michael W Untermeyer (individual) | 2 | 7 | $4.9M | phila.gov ↗ |
| The Sy Investment Group | 5 | 5 | $1.7M | phila.gov ↗ |
| 313 S 18th Llc | 1 | 1 | $999K | phila.gov ↗ |
| 325 S 18th Street Llc | 1 | 1 | $1.2M | phila.gov ↗ |
| 337 Holdings Llc | 1 | 1 | $1.3M | phila.gov ↗ |
House by house
All 21 homes on the block — value and 12-year trajectory, ownership, and the paper trail on the ones that were bought, built, torn down, or flipped. Sorted up the street; each links to its full city record — or download the roster (CSV).
Every house's assessed value, 2016–2027 — each line is one home
Worth a look
| Address | Ownership | Value & trend | Bd/Ba | Sq ft | Built | Sales | Flags |
|---|---|---|---|---|---|---|---|
| 313 S 18TH ST Renovated & sold onBought for $1.1M in 2011, major alteration permit in 2013, sold for $1.8M in 2022 (+66%). | Investor / LLC | $999K | —/— | 4,692 | 1870 | 3 | rented |
| 315 S 18TH ST New constructionBought for $1.1M in 2021, built new under a 2016 permit, sold for $1.4M in 2025. | Owner-occupied | $1.1M | 3/2 | 1,908 | 1800 | 6 | |
| 317 S 18TH ST ImprovedBought for $1.3M in 2010. Owner pulled a major alteration permit in 2016. | Owner-occupied | $1.4M | 5/3 | 2,868 | 1800 | 2 | rented |
| 319 S 18TH ST New constructionbuilt new under a 2025 permit, sold for $675K in 2025. | Absentee individual | $830K | —/— | 1,783 | 1800 | 1 | |
| 321 S 18TH ST ImprovedBought for $908K in 2014. Owner pulled a zoning permit in 2019. | Owner-occupied | $1.2M | 3/2 | 2,133 | 1800 | 1 | |
| 323 S 18TH ST ImprovedOwner pulled a alterations permit in 2024. | Owner-occupied | $1.3M | —/— | 2,951 | 1800 | 0 | |
| 325 S 18TH ST New constructionbuilt new under a 2019 permit. | Investor / LLC | $1.2M | —/— | 4,980 | 1800 | 4 | 2 violtax lien |
| 327 S 18TH ST History2 L&I violations (2016). | Absentee individual | $909K | —/— | 3,415 | 1920 | 0 | rented |
| 329 S 18TH ST ImprovedBought for $500K in 2001. Owner pulled a alterations permit in 2024. | Owner-occupied | $1.6M | —/— | 4,644 | 1800 | 2 | |
| 331 S 18TH ST ImprovedOwner pulled a alterations permit in 2025. | Absentee individual | $950K | —/— | 3,598 | 1800 | 0 | rented |
| 333 S 18TH ST HistoryL&I violation (2013). | Absentee individual | $838K | —/— | 3,810 | 1920 | 0 | rented |
| 335 S 18TH ST Historysold $450K (2002); 2 L&I violations (2007); 2 L&I violations (2017); L&I violation (2022). | Absentee individual | $1.3M | —/— | 5,180 | 1920 | 1 | rented |
| 337 S 18TH ST ImprovedBought for $971K in 2017. Owner pulled a alteration permit in 2017. | Owner-occupied | $1.3M | 5/3 | 3,366 | 1800 | 1 | |
| 339 S 18TH ST New constructionBought for $910K in 2018, built new under a 2018 permit (tax-abated), sold for $2.1M in 2019. | Owner-occupied | $2.2M | 4/3 | 4,814 | 1800 | 2 | abated |
| 341 S 18TH ST ImprovedBought for $443K in 2000. Owner pulled a electrical permit in 2019. | Owner-occupied | $1.8M | 4/4 | 4,098 | 1800 | 5 | |
| 343 S 18TH ST | Investor / LLC | $334K | 1/1 | 732 | 1900 | 0 | rented |
| 343 S 18TH ST | Investor / LLC | $374K | 2/2 | 855 | 1900 | 0 | rented |
| 343 S 18TH ST HistoryL&I violation (2011); L&I violation (2016). | Investor / LLC | $276K | 1/1 | 567 | 1900 | 0 | rented |
| 343 S 18TH ST | Investor / LLC | $350K | 2/1 | 822 | 1900 | 0 | rented |
| 343 S 18TH ST ImprovedOwner pulled a alteration permit in 2018. | Investor / LLC | $352K | 1/1 | 828 | 1900 | 0 | rented |
| 345-47 S 18TH ST ImprovedOwner pulled a plumbing permit in 2013. | Absentee individual | $2.1M | —/— | 10,568 | 1920 | 0 | rented |
Neighborhood
Neighborhood income and demographics are coming soon.
Generated 2026-07-08 from public City of Philadelphia records · Download this block's data (CSV)