Rockridge, Oakland vs Sunnyvale
Rockridge, Oakland carries an effective property tax rate of 1.36% of assessed value and Sunnyvale carries 1.16%, both for fiscal year 2025-26. On one identical reference loan the monthly carrying costs are $10,104 and $9,837 — $267 apart, with Sunnyvale lower. To Sunnyvale / Mountain View at AM peak the fastest published commutes are 70 min by car from Rockridge, Oakland and 10 min by Caltrain from Sunnyvale. Every figure is an objective public metric or arithmetic on one, and names its source.
Rockridge, Oakland (Alameda County) · Sunnyvale (Santa Clara County)
| Metric | Rockridge, Oakland | Sunnyvale | Difference |
|---|---|---|---|
| Median $/sqft (SFR) | $1,000 | $1,400 | −$400 |
| Effective tax rate | 1.36% | 1.16% | +0.200% |
| Monthly cost, reference loan | $10,104 | $9,837 | +$267 |
| FiDi SF (Montgomery St BART) — Drive | 35 min | 75 min | −40 min |
| Oakland City Center (12th St BART) — BART | 12 min | 80 min | −68 min |
| Oakland City Center (12th St BART) — Drive | 15 min | 55 min | −40 min |
| Sunnyvale / Mountain View (Sunnyvale Caltrain) — Drive | 70 min | 10 min | +60 min |
Difference is Rockridge, Oakland minus Sunnyvale. Sources are cited on each submarket page.
60 minutes each way to Sunnyvale / Mountain View (Sunnyvale Caltrain) is what actually separates Rockridge from Sunnyvale; Sunnyvale holds that side. Both are billed within 0.20% of each other, 1.36% to 1.16%.
Square footage per dollar
Upper Rockridge above Broadway Terrace is largely 1991 rebuild stock, which prices differently from the bungalows. The north and east Sunnyvale flats hold the small detached inventory. Posted medians are $1,000 per square foot in Rockridge and $1,400 in Sunnyvale, a $400 spread.
The monthly, matched
Modelled the same way in both ($1,600,000 purchase, 20% down, 6.5% fixed, $2,400 insurance, dues excluded), Rockridge totals $10,104 a month at 1.36% and Sunnyvale $9,837 at 1.16% — tax lines of $1,813 and $1,547. Oakland's effective rate runs 1.3-1.4 percent, the highest base in the East Bay. Sunnyvale townhome dues run $350-$600 a month; new downtown condos $600-$900. Neither figure includes dues or a district assessment, and both belong on the worksheet before an offer.
Getting to work
To Sunnyvale / Mountain View (Sunnyvale Caltrain): 70 minutes by driving from Rockridge, 10 by Caltrain from Sunnyvale — a 60-minute edge to Sunnyvale, or 10.0 hours across a ten-trip week. To FiDi SF (Montgomery St BART): 25 minutes by BART from Rockridge, 75 by Caltrain from Sunnyvale — a 50-minute edge to Rockridge, or 8.3 hours across a ten-trip week. Highway 24 puts Rockridge 15 minutes from the Bay Bridge at 6 a.m. and 35-50 at 8. Sunnyvale Caltrain has limited express service at 50-60 minutes to 4th and King.
What the disclosure stack holds
Insurance is priced off mapping, not off price per foot. Upper Rockridge above Broadway Terrace sits inside the 1991 Oakland Hills fire footprint and is mapped Very High. Northern Sunnyvale near the bay and Moffett carries liquefaction and FEMA flood mapping. Pull the parcel's own mapping — CAL FIRE severity zone, FEMA flood panel, CGS liquefaction zone — and get a written quote before the contingency date.
Choosing between them
Rockridge fits a need for a walkable sub-30-minute rail commute to San Francisco. Sunnyvale fits a ten-minute-drive requirement to the Cupertino, Mountain View or Santa Clara campuses. Write the requirement down before the search: these two answer different ones.
Sources. Tax figures come from Alameda County Tax Rates by TRA FY 2025-26; Santa Clara County Tax Rate Book FY 2025-26, composited in build/assets/metrics.json. They are county-level and not yet verified at the TRA, so the parcel's bill governs. Travel times are AM-peak door-to-door estimates from data/commute/static.csv. Median price per foot is a trailing figure, not a valuation, and the local detail comes from the broker's own transactions.
Compare any two submarkets
| Metric | Rockridge, Oakland | Sunnyvale |
|---|---|---|
| Median $/sqft (SFR) | $1,000 | $1,400 |
| Effective tax rate | 1.36% | 1.16% |
| Monthly cost, reference loan | $10,104 | $9,837 |
| Fastest to FiDi SF (Montgomery St BART) | 25 min | 75 min |
| Fastest to Oakland City Center (12th St BART) | 12 min | 55 min |
| Fastest to Sunnyvale / Mountain View (Sunnyvale Caltrain) | 70 min | 10 min |
Same reference loan on both sides; the tax line is the only variable. Commute figures are door-to-door AM-peak estimates. Sources are listed on each submarket page.
Rockridge, Oakland detail
| Component | Rate of assessed value |
|---|---|
| Prop 13 general levy | 1.000% |
| County / city voter-approved bonds | 0.152% |
| School district measures | 0.208% |
| Effective rate | 1.36% |
| Mello-Roos / CFD | None recorded |
Source: Alameda County Tax Rates by TRA FY 2025-26 (Alameda County), composited in
build/assets/metrics.json.
Tax Rate Area not yet verified parcel-by-parcel — confirm the rate on the parcel’s own tax bill.
Sunnyvale detail
| Component | Rate of assessed value |
|---|---|
| Prop 13 general levy | 1.000% |
| County / city voter-approved bonds | 0.045% |
| School district measures | 0.115% |
| Effective rate | 1.16% |
| Mello-Roos / CFD | None recorded |
Source: Santa Clara County Tax Rate Book FY 2025-26 (Santa Clara County), composited in
build/assets/metrics.json.
Tax Rate Area not yet verified parcel-by-parcel — confirm the rate on the parcel’s own tax bill.
Rockridge, Oakland vs Sunnyvale: questions and answers
- Which has the lower effective property tax rate, Rockridge, Oakland or Sunnyvale?
- Sunnyvale, at 1.16% of assessed value against 1.36% for fiscal year 2025-26 — a gap of 0.200%. Rates are composited from county tax rate books; each parcel bill governs.
- How much do monthly carrying costs differ between Rockridge, Oakland and Sunnyvale?
- $267 per month on the identical reference loan: Rockridge, Oakland $10,104, Sunnyvale $9,837. Sunnyvale is lower. Principal and interest are held constant, so the difference is the tax line. Arithmetic only.
- Which has the shorter commute to Sunnyvale / Mountain View, Rockridge, Oakland or Sunnyvale?
- Sunnyvale. Rockridge, Oakland is 70 min by car; Sunnyvale is 10 min by Caltrain. Door-to-door, AM peak. Source: data/commute/static.csv.
- What is the price per square foot difference between Rockridge, Oakland and Sunnyvale?
- $400 per square foot: Rockridge, Oakland $1,000, Sunnyvale $1,400. Single-family medians, trailing twelve months. A median is not a valuation of any specific property.