Alleghany, CA Property Tax Rate (FY 2025-26)
Alleghany's property tax rate is 1.0000% for fiscal year 2025-26 in its primary tax rate area: the 1% Proposition 13 base plus 0.0000% in voter-approved bonds.
First-year property tax by purchase price
Under Proposition 13 the purchase price becomes the assessed value, so the first-year tax at the city rate is the price times 1.0000%. Fixed assessments come on top. Your true tax rate is the two together, the tax at the city rate plus fixed assessments, divided by the purchase price on a newly purchased home.
| Purchase price | Annual tax | Monthly |
|---|---|---|
| $500,000 | $5,000.00 | $416.67 |
| $750,000 | $7,500.00 | $625.00 |
| $1,000,000 | $10,000.00 | $833.33 |
| $1,500,000 | $15,000.00 | $1,250.00 |
| $2,000,000 | $20,000.00 | $1,666.67 |
Property tax calculator
Search for a city, then change the price, rate or fixed assessments to estimate a first-year bill. It uses the same math as Mortgage Blueprint's tax breakdown.
What this rate leaves out
- This is the rate for Alleghany's primary tax rate area. Other tax rate areas in the same city can have a different rate.
- Mello-Roos (Community Facilities District) taxes, flat parcel taxes and fixed special assessments are not included. Check the property's tax bill.
- Buyers get a supplemental tax bill after purchase for the change in assessed value.
- Under Proposition 13, the assessed value can rise by at most 2% a year while you own the home.
Look up a tax bill
Look up your Sierra County property tax bill on the Sierra County Treasurer-Tax Collector site. Sierra County property tax rates and due dates.
Loan limits
Alleghany is in Sierra County, where the 2026 conforming loan limit for a one-unit home is $832,750. Sierra County loan limits.
Other cities in Sierra County
| City or community | Tax rate (FY 2025-26) |
|---|---|
| Calpine | 1.0000% |
| Downieville | 1.0315% |
| Goodyears Bar | 1.0000% |
| Loyalton | 1.0000% |
| Sierra Brooks | 1.0000% |
| Sierra City | 1.0000% |
| Sierraville | 1.0000% |
Source
Rate from Sierra County Property Tax Rates and Special Assessments 2025-26. All California city rates.