Orinda vs Rockridge, Oakland
Orinda carries an effective property tax rate of 1.08% of assessed value and Rockridge, Oakland carries 1.36%, both for fiscal year 2025-26. On one identical reference loan the monthly carrying costs are $9,730 and $10,104 — $373 apart, with Orinda lower. To Oakland City Center at AM peak the fastest published commutes are 20 min by BART from Orinda and 12 min by BART from Rockridge, Oakland. Every figure is an objective public metric or arithmetic on one, and names its source.
Orinda (Contra Costa County) · Rockridge, Oakland (Alameda County)
| Metric | Orinda | Rockridge, Oakland | Difference |
|---|---|---|---|
| Median $/sqft (SFR) | $1,150 | $1,000 | +$150 |
| Effective tax rate | 1.08% | 1.36% | −0.280% |
| Monthly cost, reference loan | $9,730 | $10,104 | −$373 |
| FiDi SF (Montgomery St BART) — BART | 38 min | 25 min | +13 min |
| FiDi SF (Montgomery St BART) — Drive | 45 min | 35 min | +10 min |
| Oakland City Center (12th St BART) — BART | 20 min | 12 min | +8 min |
| Oakland City Center (12th St BART) — Drive | 25 min | 15 min | +10 min |
| Sunnyvale / Mountain View (Sunnyvale Caltrain) — Drive | 70 min | 70 min | 0 min |
Difference is Orinda minus Rockridge, Oakland. Sources are cited on each submarket page.
On a matched $1,600,000 purchase the payment gap is $373, and it is entirely a tax gap: 1.08% in Orinda, 1.36% in Rockridge. Price per foot, $1,150 against $1,000, is the second question.
Square footage per dollar
Sleepy Hollow, Glorietta and Orinda Downs hold the $1.4M inventory, usually level-in at the entry with the house stepping down. Rockridge comps run $900-$1,000 per square foot; Upper Rockridge runs $1,000-$1,150. The median foot costs $1,150 in Orinda against $1,000 in Rockridge; on a 2,000 sq ft house that is $300,000 of purchase price.
The monthly, matched
Against an identical $1,600,000 note at 6.5% with 20% down and $2,400 a year of coverage, Orinda totals $9,730 a month at 1.08% and Rockridge $10,104 at 1.36% — tax lines of $1,440 and $1,813. Orinda's add-ons are parcel taxes and a road bond rather than a CFD, so they do not amortize away. No Mello-Roos and no HOA on the Rockridge bungalows.
Commute, measured
To FiDi SF (Montgomery St BART): 38 minutes by BART from Orinda, 25 by BART from Rockridge — a 13-minute edge to Rockridge, or 2.2 hours across a ten-trip week. To Oakland City Center (12th St BART): 20 minutes by BART from Orinda, 12 by BART from Rockridge — a 8-minute edge to Rockridge, or 1.3 hours across a ten-trip week. Orinda's station lot fills by 7:15 a.m., so the shuttle or a drop-off plan is part of the commute. Door to door from the Rockridge bungalows to FiDi is 25-35 minutes, the shortest rail commute in this set.
Fire, flood and the premium
Nearly all of Orinda is mapped Very High on the CAL FIRE Fire Hazard Severity Zone maps. Upper Rockridge non-renewals are routine; FAIR Plan plus a wrap runs $5K-$9K. 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.
The housing need each answers
Orinda answers a need for the shortest BART ride in Contra Costa paired with a large lot. Rockridge is the answer when commute length is the binding constraint. The decision is which requirement is load-bearing, because neither submarket satisfies both lists.
Sources. Tax figures come from Contra Costa TRA Book FY 2025-26; Alameda County Tax Rates by TRA 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 | Orinda | Rockridge, Oakland |
|---|---|---|
| Median $/sqft (SFR) | $1,150 | $1,000 |
| Effective tax rate | 1.08% | 1.36% |
| Monthly cost, reference loan | $9,730 | $10,104 |
| Fastest to FiDi SF (Montgomery St BART) | 38 min | 25 min |
| Fastest to Oakland City Center (12th St BART) | 20 min | 12 min |
| Fastest to Sunnyvale / Mountain View (Sunnyvale Caltrain) | 70 min | 70 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.
Orinda detail
| Component | Rate of assessed value |
|---|---|
| Prop 13 general levy | 1.000% |
| County / city voter-approved bonds | 0.012% |
| School district measures | 0.068% |
| Effective rate | 1.08% |
| Mello-Roos / CFD | None recorded |
Source: Contra Costa TRA Book FY 2025-26 (Contra Costa 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 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.
Orinda vs Rockridge, Oakland: questions and answers
- Which has the lower effective property tax rate, Orinda or Rockridge, Oakland?
- Orinda, at 1.08% of assessed value against 1.36% for fiscal year 2025-26 — a gap of 0.280%. Rates are composited from county tax rate books; each parcel bill governs.
- How much do monthly carrying costs differ between Orinda and Rockridge, Oakland?
- $373 per month on the identical reference loan: Orinda $9,730, Rockridge, Oakland $10,104. Orinda is lower. Principal and interest are held constant, so the difference is the tax line. Arithmetic only.
- Which has the shorter commute to Oakland City Center, Orinda or Rockridge, Oakland?
- Rockridge, Oakland. Orinda is 20 min by BART; Rockridge, Oakland is 12 min by BART. Door-to-door, AM peak. Source: data/commute/static.csv.
- What is the price per square foot difference between Orinda and Rockridge, Oakland?
- $150 per square foot: Orinda $1,150, Rockridge, Oakland $1,000. Single-family medians, trailing twelve months. A median is not a valuation of any specific property.