Every home in the Fox Chapel Area School District pays the same school tax rate. For 2026-27 that rate is 22.6898 mills, whether the house is in Fox Chapel Borough, O'Hara, Indiana Township, Aspinwall, Sharpsburg or Blawnox. Two other pieces of the bill change from one address to the next. The first is the municipal rate, which runs from 2.40 mills to 10.85 mills inside this one district. The second is the assessed value that every rate multiplies. In Allegheny County that value can be more than a decade out of date, and a new purchase price is often what gets it reopened.
So two homes on the same school bus route can carry very different holding costs. Right now the higher municipal rates fall on the boroughs where homes sell for less.
The Line on the Bill That Changes at the Border
A mill is one dollar of tax for every $1,000 of assessed value. Every Fox Chapel Area property pays the county's 2026 rate of 6.43 mills plus the district's 22.6898 mills. That shared base comes to 29.1198 mills. The municipal rate goes on top of it, and the Allegheny County Treasurer's 2026 municipal millage table lists these rates for the district's six municipalities:
| Municipality | 2026 municipal millage | Combined with county and school | Tax per $100,000 of assessed value |
|---|---|---|---|
| O'Hara Township | 2.40 | 31.52 | about $3,152 |
| Fox Chapel Borough | 2.95 | 32.07 | about $3,207 |
| Indiana Township | 3.47 | 32.59 | about $3,259 |
| Aspinwall Borough | 8.36 | 37.48 | about $3,748 |
| Sharpsburg Borough | 9.75 | 38.87 | about $3,887 |
| Blawnox Borough | 10.85 | 39.97 | about $3,997 |
The combined figures mix the district's 2026-27 school year with the county and municipal 2026 calendar-year rates. They show how the bill is built, and they won't match any single tax notice to the penny. On municipal tax alone, $100,000 of assessed value costs about $240 a year in O'Hara and about $1,085 in Blawnox, roughly four and a half times as much.
Why the Lower-Priced Boroughs Carry the Higher Rates
Prices run the other way. We tallied valid sales in the county's 2026 real estate sales file, published through the Western Pennsylvania Regional Data Center and refreshed October 4, 2026. The approximate 2026 medians so far:
- Fox Chapel Borough: about $950,000 across 31 valid sales
- O'Hara Township: about $551,000 across 60
- Indiana Township: about $437,500 across 34
- Aspinwall Borough: about $428,500 across 24
- Blawnox Borough: about $285,000 across 9
Sharpsburg had only a handful of valid sales in the 2026 file, and the most recent was recorded in June. That's too few to support a median. Its recorded sales sit well below every other municipality on the list. The data center also warns that recording can lag, so all of these figures are rough.
Put the two lists side by side. The three municipalities with the lowest rates, O'Hara, Fox Chapel Borough and Indiana Township, have three of the four highest medians. Aspinwall, Sharpsburg and Blawnox have the three highest rates. The arithmetic behind that is simple. One mill on a lower-value home raises fewer dollars, so a borough with modest property values needs more mills to fund the same basic services. A buyer moving down in price to get into the district can give back part of those savings every year through the municipal line.
New development is the usual way a small borough widens its tax base, and Sharpsburg's biggest project shows how slow that can be. Allegheny Shores is the proposed 52-acre Mosites redevelopment of a riverfront brownfield, planned for housing, businesses and about 10 acres of public park. Minutes from Sharpsburg's June 25, 2026 council meeting show it still in utility and access engineering, and the borough noted that PA SITES funding was not awarded. An earlier 2027-to-2028 occupancy target dates from 2024 and no longer reflects where the work stands.
The Number the Millage Multiplies Is Old
The rate is half the bill. The assessed value is the other half, and that's where buyers get caught off guard at closing.
Allegheny County hasn't done a countywide reassessment in nearly 15 years. A seller who has owned a home for years may have an assessment far below what the house sells for. When that home changes hands, the price becomes public record. The Post-Gazette reported in August 2026 that school districts and municipalities often use a new purchase price to appeal a county valuation that can be more than a decade out of date, while the assessments on surrounding homes stay where they were. We found no public record of a Fox Chapel Area School District policy on filing these appeals. The board minutes from November and December 2025 show pending tax appeals discussed in closed session, without names or grounds.
The county publishes the factor that turns market value into assessed value in these appeals. For the 2027 tax year, the common level ratio is 49.3%. The county's Board of Property Assessment Appeals and Review applies it to current market value in appeals starting September 2026. Applied to a $500,000 market value, that ratio gives an assessment of $246,500. In Aspinwall the table above puts the yearly tax on that figure at about $9,240, and in O'Hara at about $7,770. The annual appeal window for 2027 ran July 1 through September 1, 2026, so it has already closed.
The case behind this year's court order shows how it plays out. A Churchill homeowner bought a home for $225,000 in 2021. The following year the Woodland Hills School District appealed its $114,500 assessment, and the county raised it to about $142,900. The homeowner's lawsuit said the assessed values on her street ranged from zero to about $214,100. That case comes from a different district, but the same county system applies to every Fox Chapel Area address.
The District's Tax Base Is Shrinking From the Other Direction
Appeals also go the other way, and owners who win reductions take value out of the shared tax base. The district's 2025-26 budget says total taxable assessment values fell from the previous year for the first time in 10 years, cutting real estate revenue by about $250,000. That budget came with a 2.3% millage increase.
The 2026-27 budget, adopted June 8, 2026, raised millage 3.1% to 22.6898. The district says the increase reflects low growth in real estate values due to appeals, and it lists assessment reductions from county appeals as a future challenge. By the district's figures, each mill raises about $3.7 million. When the base shrinks, the rate goes up for every taxpayer in all six municipalities, including owners whose assessments never moved.
The board has taken a position on this. In April 2026 it approved Resolution 2026-4, urging Allegheny County Council to require and carry out regular, periodic property assessments.
2032 Is Now on the Calendar
Four months after that resolution, a court acted. On August 17, 2026, the Post-Gazette reported that Judge Kenneth Valasek had ordered Allegheny County to finish a countywide reassessment by July 2032, settling the homeowner's lawsuit. The order calls for:
- Appointing a special master or judge to oversee the process within two months
- Holding quarterly status conferences to make sure the county complies
- Engaging a contractor to begin the reassessment within nine months
The paper described the coming revaluation as a far-reaching rebalancing of the tax base that can bring steep increases for some homeowners. For a Fox Chapel Area buyer, the open question is less whether assessments will change and more how much they change in one municipality compared with the next. Today's gaps between neighbors on the same street, and between O'Hara and Blawnox, all go back to valuations that a full reassessment would replace.
Comparing Two Listings With This in Mind
A listing sheet shows last year's taxes, which reflect the seller's assessment. To compare two homes across the municipal lines more accurately, a buyer can:
- Find each home's current assessed value in the county's property records.
- Multiply that value by the combined millage for its municipality from the table above.
- Multiply the expected purchase price by 49.3% and run the same math. That shows the bill if the purchase price became the basis for an appeal.
- Keep the 2032 reassessment deadline in mind for any home you plan to hold past that year.
None of this is tax advice. A tax professional or real estate attorney can speak to a specific property.
Quick Answers
Is the school tax the same everywhere in the Fox Chapel Area? Yes. The 2026-27 rate is 22.6898 mills district-wide.
Which municipality has the lowest municipal rate? O'Hara Township, at 2.40 mills for 2026. Blawnox has the highest in the district at 10.85.
Can I still appeal for 2027? The 2027 annual appeal window closed September 1, 2026.
When does the reassessment take effect? The court set a completion deadline of July 2032. Interim steps, including hiring a contractor, are due within the next nine months.
Comparing homes in O'Hara, Aspinwall or anywhere else in the district? Beth Danchek and our team can run the assessment and millage math on each home you're considering before you make an offer, so the yearly tax bill holds no surprises after closing. Ready to make your next move? Contact us today.