Rohnert Park property tax: where it goes
A Rohnert Park house pays 1.139% of its taxable value in property tax, plus flat charges on the same bill. For a house at $666,300 of market value with the homeowners' exemption, that's about $7,665 a year.
Tax is levied on net taxable value (land and improvements less the homeowners' exemption) times the tax rate per $100: the 1% rate plus the voter-approved taxes listed on the bill (Warm Springs Dam/Russian River Project, Cotati-Rohnert Park Unified bonds and junior college bonds).
Who taxes this house
| Taxing agency | Rate | On $666,300 |
|---|---|---|
| Countywide 1% tax (Prop 13) | 1% | $6,593 |
| Sonoma Water Warm Springs Dam / Russian River Project | 0.007% | $46 |
| Cotati-Rohnert Park Unified School District bonds (schools) | 0.105% | $692 |
| Sonoma County Junior College District bonds (schools) | 0.027% | $178 |
| Cotati-Rohnert Park Unified School District parcel tax | flat | $89 |
| Rohnert Park Fire 2000 direct charge | flat | $43 |
| Marin/Sonoma mosquito & vector control (MS-SONOMA MOSQUITO #1) | flat | $12 |
| SF Bay Restoration Authority parcel tax (Measure AA) | flat | $12 |
| Total | 1.139% | $7,665 |
2026-27 tax year, Sonoma County (Rohnert Park tax rate area 007-003). Exemptions applied: Homeowners' exemption ($7,000).
Ways to pay less
- Seniors 65+ (as of July 2025) or SSI disability: school parcel tax exemption. Owners who were 65 or older as of July 2025, or who receive Supplemental Security Income for a disability, can apply to the Cotati-Rohnert Park Unified School District for exemption from its parcel tax on the parcel that is their principal residence. The district's parcel tax appears on 2026-27 bills as COTATI-RP UNIF SPEC TAX, $89.00. Once approved, the exemption lasts for the entire term of the parcel tax while you remain eligible. How: Mail or bring the Parcel Tax Exemption Application, with proof of age or SSI and proof of residence, to Cotati-Rohnert Park Unified School District, Attn. Business Services, 7165 Burton Avenue, Rohnert Park; questions (707) 792-4705.
Dates
| When | What |
|---|---|
| Nov 1 (in 10 days) | First property tax installment due; it becomes delinquent after Dec 10, 2026, with a 10% penalty. |
| Nov 30, 2026 (in 39 days) | Last day of Sonoma County's 2026 assessment appeal filing period (opened July 2). |
| Feb 15 | Last day for a first-time homeowners' exemption claim to get the full exemption for that year. |
Pay or manage it
Sources
- Sonoma County 2026-27 secured tax bill, TRA 007-003
- Sonoma County 2026-27 secured tax bill, SOMO Village (TRA 007-007)
- Cotati-Rohnert Park Unified: senior exemption
- Cotati-Rohnert Park Unified: parcel tax exemption application
- SF Bay Restoration Authority Measure AA (NBS parcel tax info)
- California BOE: Homeowners' Exemption
- Sonoma County multi-year tax rates FY 2026-27
- Sonoma County: school parcel tax exemptions
- California BOE letter: 2026 assessment appeal filing periods by county
Checked October 22, 2026. Every number here comes from the public sources listed, matched by our checker.
Rates change every year; this page shows when it was last checked. Nothing here is legal, tax or insurance advice.