Who owns your block
800 block of Alter St
A mostly owner-occupied block: 73% of homes are lived in by their owners.
The typical home here is up 58% since 2016, now about $310K. Property taxes are climbing about 1% 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 $310K — about 1.4× the citywide median, and below the ZIP 19147 median of $461K. The same block, read against everyone else in the ZIP 19147 and across Philadelphia.
| This block | ZIP 19147 | Philadelphia | |
|---|---|---|---|
| Median home value | $310K | $461K | $223K |
| Owner-occupied | 18% | 38% | 41% |
Safety & quality of life
Within 200 metres of the block over the last 12 months: 88 reported crimes (28 violent) and 335 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
- $310K typical home, up +58% since 2016
- Tax bill $1,587 to $1,768 a year, +1%/yr and compounding
- Whole block: $6.6M assessed, $54,960/yr to the city, about $2,498 per home
Median assessed value · 2016–2027
▲ +58% since 2016
Estimated property tax · per home, per year
▲ +11% since 2016 · ~+1%/yr
Who really pays — effective tax rate, one dot per home
819 Alter St is assessed at $417K but pays $1,730 a year — about 30% of the $5,836 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 lagged the Philadelphia market, compounding +4.2% 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 $158 today versus $201 across Philadelphia — this block trailed 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 22 arm's-length sales since 1999. 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 22 parcels
- Owner-occupied 16
- Investor / LLC 1
- Absentee individual 4
- Vacant 1
Value distribution today
| Owner | On block | Owns citywide | Portfolio value | Source |
|---|---|---|---|---|
| 818 Alter Llc | 1 | 1 | $96K | phila.gov ↗ |
House by house
All 22 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 |
|---|---|---|---|---|---|---|---|
| 804 ALTER ST | Owner-occupied | $300K | 3/1 | 780 | 1920 | 0 | abated |
| 805 ALTER ST ImprovedBought for $130K in 2009. Owner pulled a plumbing permit in 2010. | Owner-occupied | $430K | 4/1 | 1,896 | 1920 | 1 | |
| 806 ALTER ST ImprovedBought for $35K in 2001. Owner pulled a electrical permit in 2011. | Owner-occupied | $305K | —/— | 1,176 | 1920 | 3 | |
| 807 ALTER ST TradedTraded 2×: $211K in 2006 → $350K in 2018 (+66%). | Owner-occupied | $394K | 4/1 | 1,596 | 1920 | 2 | |
| 808 ALTER ST | Owner-occupied | $358K | —/— | 1,448 | 1920 | 1 | |
| 809 ALTER ST | Owner-occupied | $376K | —/— | 1,456 | 1920 | 0 | abated |
| 810-16 ALTER ST | Absentee individual | $323K | —/— | 3,360 | 1930 | 0 | |
| 811-13 ALTER ST New constructionBought for $148K in 2017, built new under a 2018 permit, sold for $337K in 2018. | Vacant | $217K | —/— | — | — | 2 | rentedtax lien |
| 815 ALTER ST New constructionbuilt new (tax-abated), sold for $77K in 2001. | Owner-occupied | $331K | 3/1 | 1,288 | 1920 | 1 | abated |
| 817 ALTER ST New constructionbuilt new (tax-abated), sold for $83K in 2001. | Owner-occupied | $372K | 3/1 | 1,372 | 1920 | 1 | abated |
| 818 ALTER ST New constructionbuilt new under a 2019 permit. | Owner-occupied | $119K | —/— | 1,240 | 1960 | 0 | |
| 819 ALTER ST New constructionbuilt new under a 2012 permit (tax-abated). | Owner-occupied | $417K | 4/1 | 2,044 | 1920 | 0 | abated |
| 820 ALTER ST | Investor / LLC | $96K | —/— | 1,125 | 1930 | 1 | tax lien |
| 821 ALTER ST | Absentee individual | $316K | 3/1 | 896 | 1920 | 0 | |
| 822 ALTER ST | Owner-occupied | $298K | —/— | 1,116 | 1920 | 0 | abated |
| 823 ALTER ST New constructionBought for $57K in 1999, built new (tax-abated), sold for $57K in 2001. | Owner-occupied | $267K | 3/1 | 896 | 1920 | 2 | abated |
| 824 ALTER ST | Absentee individual | $297K | —/— | 1,113 | 1920 | 0 | |
| 825 ALTER ST | Owner-occupied | $227K | 2/1 | 672 | 1920 | 0 | abated |
| 826 ALTER ST ImprovedBought for $10K in 2000. Owner pulled a alterations permit in 2022. | Owner-occupied | $334K | 2/1 | 1,116 | 1920 | 5 | |
| 827 ALTER ST HistoryL&I violation (2008); L&I violation (2011); 2 L&I violations (2016); L&I violation (2018); sold $150K (2019). | Absentee individual | $235K | 2/1 | 720 | 1920 | 1 | |
| 828 ALTER ST | Owner-occupied | $343K | —/— | 1,440 | 1920 | 0 | abated |
| 829 ALTER ST New constructionBought for $80K in 2002, built new under a 2011 permit (tax-abated), sold for $138K in 2003. | Owner-occupied | $246K | 3/1 | 792 | 1920 | 2 | abated |
Neighborhood
Neighborhood income and demographics are coming soon.
Generated 2026-07-09 from public City of Philadelphia records · Download this block's data (CSV)