The Tax Difference at Three Price Points
| Purchase Price | Butler County Annual | Allegheny County Annual | Annual Delta | Monthly Delta | 10-Year Delta |
|---|---|---|---|---|---|
| $450,000 | ~$6,300 | ~$9,450 | ~$3,150 | ~$263 | ~$31,500 |
| $525,000 | ~$7,350 | ~$11,025 | ~$3,675 | ~$306 | ~$36,750 |
| $600,000 | ~$8,400 | ~$12,600 | ~$4,200 | ~$350 | ~$42,000 |
| $700,000 | ~$9,800 | ~$14,700 | ~$4,900 | ~$408 | ~$49,000 |
| 10-year delta assumes 1.5% annual tax increase. Does not include potential assessment appeals that could reduce Allegheny County taxes in later years. | |||||
Communities by County
Butler County 55+ Communities
- Traditions of America at Cranberry — Cranberry Township, 102 homes, sold out/resale, ~1.4% effective rate
- Scenic Ridge — Harmony, 80 homes, Epcon, attached + single-family, ~1.4% effective rate
Allegheny County 55+ Communities
- Rose Ridge — Allison Park, 100 homes, active new construction, ~2.1% effective rate
- Traditions of America at Richland — Richland Township, ~150 homes, ~2.1% effective rate
- Traditions of America at Sewickley Ridge — Sewickley, 241 homes, sold out/resale, ~2.1% effective rate
- Enclave at Concord Grove — Allegheny County, attached homes, ~2.1% effective rate
Other Counties (for reference)
- TOA Southpointe (Washington Co.) — ~1.5% effective, similar to Butler
- Watermark at The Landings (Beaver Co.) — ~1.56% effective, between Butler and Allegheny
The Act 77 Complication
Allegheny County's Act 77 gives residents 65+ a 30% discount on the county portion of their property tax. At face value, this appears to narrow the gap between Allegheny and Butler County.
The catch: Act 77 requires 10 continuous years of primary residence in Allegheny County. If you're moving from anywhere outside Allegheny County — including from Butler County — the clock starts on your closing date. You will not see this discount until year 10.
The county portion of Allegheny property tax is roughly 6.43 mills on assessed value. On a $490,000 home at a 50.1% CLR, assessed value is approximately $245,490 — the county tax is about $1,578/year. The 30% Act 77 discount is $473/year — less than $40/month.
Even after Act 77 kicks in at year 10, Butler County remains less expensive overall — the school district and municipal portions of Allegheny County's tax bill aren't reduced by Act 77.
When Allegheny County Makes Financial Sense Anyway
The Butler County tax advantage is real and large. But Allegheny County communities sometimes make sense for individual buyers:
If your medical providers are in Allegheny County. UPMC Shadyside, UPMC Presbyterian, AHN Allegheny General, and dozens of specialist practices are in Allegheny County. If you have established oncologist, cardiologist, or other specialist relationships in Allegheny County, the cost of disrupting those relationships — and the stress of switching — may outweigh the tax savings.
If your family is concentrated in Allegheny County. Being 12 miles from downtown Pittsburgh (Sewickley Ridge) vs. 25 miles (Cranberry) is meaningfully different if you're visiting children and grandchildren several times per week.
If you've lived in Allegheny County and approach Act 77 eligibility. If you've lived in Allegheny County for 8–9 years, you're 1–2 years from Act 77. At that point, choosing an Allegheny County 55+ community captures that benefit.
If the specific community features matter more than the tax. Sewickley Ridge's walkable proximity to Sewickley Borough, Rose Ridge's 172-acre trail system and golf simulator, and the established community character of the TOA network are genuine differentiators. If they specifically matter to you, the tax premium may be worth paying.