Bay Farm Island, Alameda vs Berkeley Hills, Berkeley
Bay Farm Island, Alameda carries an effective property tax rate of 1.22% of assessed value and Berkeley Hills, Berkeley carries 1.21%, both for fiscal year 2025-26. On one identical reference loan the monthly carrying costs are $9,917 and $9,904 — $13 apart, with Berkeley Hills, Berkeley lower. To Oakland City Center at AM peak the fastest published commutes are 20 min by car from Bay Farm Island, Alameda and 20 min by car from Berkeley Hills, Berkeley. Every figure is an objective public metric or arithmetic on one, and names its source.
Bay Farm Island, Alameda (Alameda County) · Berkeley Hills, Berkeley (Alameda County)
| Metric | Bay Farm Island, Alameda | Berkeley Hills, Berkeley | Difference |
|---|---|---|---|
| Median $/sqft (SFR) | $750 | $1,050 | −$300 |
| Effective tax rate | 1.22% | 1.21% | +0.010% |
| Monthly cost, reference loan | $9,917 | $9,904 | +$13 |
| FiDi SF (Montgomery St BART) — BART | 45 min | 35 min | +10 min |
| FiDi SF (Montgomery St BART) — Drive | 40 min | 40 min | 0 min |
| Oakland City Center (12th St BART) — BART | 35 min | 22 min | +13 min |
| Oakland City Center (12th St BART) — Drive | 20 min | 20 min | 0 min |
| Sunnyvale / Mountain View (Sunnyvale Caltrain) — Drive | 55 min | 75 min | −20 min |
Difference is Bay Farm Island, Alameda minus Berkeley Hills, Berkeley. Sources are cited on each submarket page.
Alameda (Bay Farm) is the cheaper foot by $300, 29% below Berkeley Hills. What that buys is a different house, not a different bill: at $1,600,000 the two are $13 apart a month at 1.22% and 1.21%.
Square footage per dollar
Harbor Bay Isle is the bulk of Bay Farm's detached inventory. Berkeley Hills comps run $850-$1,000 per square foot. At $750 and $1,050 per foot respectively, a fixed budget buys about 40% more floor area in Alameda (Bay Farm).
The monthly, matched
Holding the loan constant — $1,600,000, 20% down, 6.5% on a 30-year fixed, $2,400 of insurance, no HOA — Alameda (Bay Farm) totals $9,917 a month at 1.22% and Berkeley Hills $9,904 at 1.21% — tax lines of $1,627 and $1,613. Harbor Bay Isle dues run $150-$200 a month depending on the village. Berkeley parcel taxes for library, parks, paramedics, soft-story and streets stack to $2,500-$4,500 a year. Neither figure includes dues or a district assessment, and both belong on the worksheet before an offer.
The trip each morning
To Sunnyvale / Mountain View (Sunnyvale Caltrain): 55 minutes by driving from Alameda (Bay Farm), 75 by driving from Berkeley Hills — a 20-minute edge to Alameda (Bay Farm), or 3.3 hours across a ten-trip week. To FiDi SF (Montgomery St BART) the two post the same 35 minutes, ferry from Alameda (Bay Farm) and BART from Berkeley Hills. Bay Farm has no BART; Coliseum station is a 12-minute drive. Door to door from the Berkeley Hills to FiDi is 50-65 minutes.
Hazard and insurance
The two carry different disclosure files, and the premium follows the file. Most of Bay Farm is engineered fill, so liquefaction is the standing disclosure. Berkeley's Zone 0 rules require five feet of ember-resistant clearance from the structure. Run the address through CAL FIRE's severity-zone viewer, the FEMA Flood Map Service Center and the CGS seismic hazard maps, and treat the premium quote as a contingency item.
Which search this actually is
Bay Farm is the option when the water crossing is the commute. The Berkeley Hills work when a 10-minute reach to campus outranks carrying cost. Rank the requirements first; the pair rarely splits on anything except the one that is non-negotiable.
Sources. Rate and payment figures: Alameda County Tax Rates by TRA FY 2025-26, as composited in build/assets/metrics.json — unverified at tax-rate-area level, so read the bill. Minutes shown are AM-peak and door to door, from data/commute/static.csv. The per-foot medians are trailing and carry no appraisal weight; the neighborhood detail is first-hand broker observation.
Compare any two submarkets
| Metric | Bay Farm Island, Alameda | Berkeley Hills, Berkeley |
|---|---|---|
| Median $/sqft (SFR) | $750 | $1,050 |
| Effective tax rate | 1.22% | 1.21% |
| Monthly cost, reference loan | $9,917 | $9,904 |
| Fastest to FiDi SF (Montgomery St BART) | 35 min | 35 min |
| Fastest to Oakland City Center (12th St BART) | 20 min | 20 min |
| Fastest to Sunnyvale / Mountain View (Sunnyvale Caltrain) | 55 min | 75 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.
Bay Farm Island, Alameda detail
| Component | Rate of assessed value |
|---|---|
| Prop 13 general levy | 1.000% |
| County / city voter-approved bonds | 0.042% |
| School district measures | 0.178% |
| Effective rate | 1.22% |
| 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.
Berkeley Hills, Berkeley detail
| Component | Rate of assessed value |
|---|---|
| Prop 13 general levy | 1.000% |
| County / city voter-approved bonds | 0.042% |
| School district measures | 0.168% |
| Effective rate | 1.21% |
| 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.
Bay Farm Island, Alameda vs Berkeley Hills, Berkeley: questions and answers
- Which has the lower effective property tax rate, Bay Farm Island, Alameda or Berkeley Hills, Berkeley?
- Berkeley Hills, Berkeley, at 1.21% of assessed value against 1.22% for fiscal year 2025-26 — a gap of 0.010%. Rates are composited from county tax rate books; each parcel bill governs.
- How much do monthly carrying costs differ between Bay Farm Island, Alameda and Berkeley Hills, Berkeley?
- $13 per month on the identical reference loan: Bay Farm Island, Alameda $9,917, Berkeley Hills, Berkeley $9,904. Berkeley Hills, Berkeley 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, Bay Farm Island, Alameda or Berkeley Hills, Berkeley?
- Bay Farm Island, Alameda. Bay Farm Island, Alameda is 20 min by car; Berkeley Hills, Berkeley is 20 min by car. Door-to-door, AM peak. Source: data/commute/static.csv.
- What is the price per square foot difference between Bay Farm Island, Alameda and Berkeley Hills, Berkeley?
- $300 per square foot: Bay Farm Island, Alameda $750, Berkeley Hills, Berkeley $1,050. Single-family medians, trailing twelve months. A median is not a valuation of any specific property.