Rockridge, Oakland vs Baywood, San Mateo
Rockridge, Oakland carries an effective property tax rate of 1.36% of assessed value and Baywood, San Mateo carries 1.11%, both for fiscal year 2025-26. On one identical reference loan the monthly carrying costs are $10,104 and $9,764 — $340 apart, with Baywood, San Mateo lower. To Oakland City Center at AM peak the fastest published commutes are 12 min by BART from Rockridge, Oakland and 45 min by car from Baywood, San Mateo. Every figure is an objective public metric or arithmetic on one, and names its source.
Rockridge, Oakland (Alameda County) · Baywood, San Mateo (San Mateo County)
| Metric | Rockridge, Oakland | Baywood, San Mateo | Difference |
|---|---|---|---|
| Median $/sqft (SFR) | $1,000 | $1,400 | −$400 |
| Effective tax rate | 1.36% | 1.11% | +0.255% |
| Monthly cost, reference loan | $10,104 | $9,764 | +$340 |
| FiDi SF (Montgomery St BART) — BART | 25 min | 48 min | −23 min |
| FiDi SF (Montgomery St BART) — Drive | 35 min | 45 min | −10 min |
| Oakland City Center (12th St BART) — BART | 12 min | 62 min | −50 min |
| Oakland City Center (12th St BART) — Drive | 15 min | 45 min | −30 min |
| Sunnyvale / Mountain View (Sunnyvale Caltrain) — Drive | 70 min | 30 min | +40 min |
Difference is Rockridge, Oakland minus Baywood, San Mateo. Sources are cited on each submarket page.
Put the two side by side and the gap is square footage, not tax: $1,000 per foot in Rockridge against $1,400 in San Mateo (Baywood). On the same $1,600,000 purchase the monthly separation is $340, because Rockridge bills 1.36% and San Mateo (Baywood) 1.11%.
The house at each price
Upper Rockridge above Broadway Terrace is largely 1991 rebuild stock, which prices differently from the bungalows. A 1,600 sq ft townhome is the other $1.4M option near Baywood. Posted medians are $1,000 per square foot in Rockridge and $1,400 in San Mateo (Baywood), a $400 spread.
What the bill looks like
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 San Mateo (Baywood) $9,764 at 1.11% — tax lines of $1,813 and $1,473. Oakland's sewer lateral and sidewalk compliance rules add $5K-$15K in seller-side or negotiated cost. No HOA on Baywood's detached homes; downtown townhomes and condos run $400-$800 a month.
Getting to work
To Sunnyvale / Mountain View (Sunnyvale Caltrain): 70 minutes by driving from Rockridge, 30 by Caltrain from San Mateo (Baywood) — a 40-minute edge to San Mateo (Baywood), or 6.7 hours across a ten-trip week. To Oakland City Center (12th St BART): 12 minutes by BART from Rockridge, 45 by driving from San Mateo (Baywood) — a 33-minute edge to Rockridge, or 5.5 hours across a ten-trip week. UC Berkeley is 10 minutes from Rockridge and Kaiser Oakland 8. San Mateo Caltrain is a 10-minute walk from lower Baywood.
What the disclosure stack holds
The Hayward Fault runs along the Rockridge hill base, and the bungalows carry brick foundation and knob-and-tube disclosures. Baywood's hillside lots west of Alameda de las Pulgas carry moderate fire mapping, with no non-renewals observed. Verify any parcel against the CAL FIRE Fire Hazard Severity Zone map, the FEMA Flood Map Service Center and the California Geological Survey seismic hazard zones before removing contingencies.
The housing need each answers
Rockridge fits a need for a walkable sub-30-minute rail commute to San Francisco. Baywood fits a walkable-Caltrain requirement with a period house. Rank the requirements first; the pair rarely splits on anything except the one that is non-negotiable.
Sources. Effective rates and carrying costs: Alameda County Tax Rates by TRA FY 2025-26; San Mateo County Tax Rate Book FY 2025-26, composited in build/assets/metrics.json; TRA-level verification pending, so confirm the rate on the parcel's own bill. Commute times: door-to-door AM-peak estimates, 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 | Baywood, San Mateo |
|---|---|---|
| Median $/sqft (SFR) | $1,000 | $1,400 |
| Effective tax rate | 1.36% | 1.11% |
| Monthly cost, reference loan | $10,104 | $9,764 |
| Fastest to FiDi SF (Montgomery St BART) | 25 min | 45 min |
| Fastest to Oakland City Center (12th St BART) | 12 min | 45 min |
| Fastest to Sunnyvale / Mountain View (Sunnyvale Caltrain) | 70 min | 30 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.
Baywood, San Mateo detail
| Component | Rate of assessed value |
|---|---|
| Prop 13 general levy | 1.000% |
| County / city voter-approved bonds | 0.010% |
| School district measures | 0.095% |
| Effective rate | 1.10% |
| Mello-Roos / CFD | None recorded |
Source: San Mateo County Tax Rate Book FY 2025-26 (San Mateo 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 Baywood, San Mateo: questions and answers
- Which has the lower effective property tax rate, Rockridge, Oakland or Baywood, San Mateo?
- Baywood, San Mateo, at 1.11% of assessed value against 1.36% for fiscal year 2025-26 — a gap of 0.250%. Rates are composited from county tax rate books; each parcel bill governs.
- How much do monthly carrying costs differ between Rockridge, Oakland and Baywood, San Mateo?
- $340 per month on the identical reference loan: Rockridge, Oakland $10,104, Baywood, San Mateo $9,764. Baywood, San Mateo 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, Rockridge, Oakland or Baywood, San Mateo?
- Rockridge, Oakland. Rockridge, Oakland is 12 min by BART; Baywood, San Mateo is 45 min by car. Door-to-door, AM peak. Source: data/commute/static.csv.
- What is the price per square foot difference between Rockridge, Oakland and Baywood, San Mateo?
- $400 per square foot: Rockridge, Oakland $1,000, Baywood, San Mateo $1,400. Single-family medians, trailing twelve months. A median is not a valuation of any specific property.