Bay Farm Island, Alameda vs Dublin
Bay Farm Island, Alameda carries an effective property tax rate of 1.22% of assessed value and Dublin carries 1.18%, both for fiscal year 2025-26. On one identical reference loan the monthly carrying costs are $9,917 and $9,869 — $48 apart, with Dublin lower. To Oakland City Center at AM peak the fastest published commutes are 20 min by car from Bay Farm Island, Alameda and 38 min by BART from Dublin. Every figure is an objective public metric or arithmetic on one, and names its source.
Bay Farm Island, Alameda (Alameda County) · Dublin (Alameda County)
| Metric | Bay Farm Island, Alameda | Dublin | Difference |
|---|---|---|---|
| Median $/sqft (SFR) | $750 | $720 | +$30 |
| Effective tax rate | 1.22% | 1.18% | +0.036% |
| Monthly cost, reference loan | $9,917 | $9,869 | +$48 |
| FiDi SF (Montgomery St BART) — BART | 45 min | 55 min | −10 min |
| FiDi SF (Montgomery St BART) — Drive | 40 min | 65 min | −25 min |
| Oakland City Center (12th St BART) — BART | 35 min | 38 min | −3 min |
| Oakland City Center (12th St BART) — Drive | 20 min | 40 min | −20 min |
| Sunnyvale / Mountain View (Sunnyvale Caltrain) — Drive | 55 min | 45 min | +10 min |
Difference is Bay Farm Island, Alameda minus Dublin. Sources are cited on each submarket page.
This pairing is a commute decision. Alameda (Bay Farm) reaches FiDi SF (Montgomery St BART) 20 minutes faster than Dublin, while the rates sit 1.22% against 1.18% and the monthly gap at $1,600,000 is $48.
The house at each price
Harbor Bay Isle is the bulk of Bay Farm's detached inventory. East Dublin comps run $580-$650 per square foot; west Dublin runs $650-$700. Posted medians are $750 per square foot in Alameda (Bay Farm) and $720 in Dublin, a $30 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), Alameda (Bay Farm) totals $9,917 a month at 1.22% and Dublin $9,869 at 1.18% — tax lines of $1,627 and $1,579. Harbor Bay Isle dues run $150-$200 a month depending on the village. Dublin CFDs push effective rates to 1.3-1.5 percent, and some run through 2040 or later. Neither figure includes dues or a district assessment, and both belong on the worksheet before an offer.
Getting to work
To FiDi SF (Montgomery St BART): 35 minutes by ferry from Alameda (Bay Farm), 55 by BART from Dublin — a 20-minute edge to Alameda (Bay Farm), or 3.3 hours across a ten-trip week. To Oakland City Center (12th St BART): 20 minutes by driving from Alameda (Bay Farm), 38 by BART from Dublin — a 18-minute edge to Alameda (Bay Farm), or 3.0 hours across a ten-trip week. Bay Farm has no BART; Coliseum station is a 12-minute drive. From east Dublin add a 10-12 minute drive to the station and parking that fills by 7:15 a.m.
What the disclosure stack holds
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. Grassland fires along I-580 are the occasional Dublin disclosure. 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 fits a need for a detached home with a garage inside the ferry catchment. Dublin is the answer when square footage per dollar outranks commute length. 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, 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. 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 | Dublin |
|---|---|---|
| Median $/sqft (SFR) | $750 | $720 |
| Effective tax rate | 1.22% | 1.18% |
| Monthly cost, reference loan | $9,917 | $9,869 |
| Fastest to FiDi SF (Montgomery St BART) | 35 min | 55 min |
| Fastest to Oakland City Center (12th St BART) | 20 min | 38 min |
| Fastest to Sunnyvale / Mountain View (Sunnyvale Caltrain) | 55 min | 45 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.
Dublin detail
| Component | Rate of assessed value |
|---|---|
| Prop 13 general levy | 1.000% |
| County / city voter-approved bonds | 0.042% |
| School district measures | 0.142% |
| Effective rate | 1.18% |
| 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 Dublin: questions and answers
- Which has the lower effective property tax rate, Bay Farm Island, Alameda or Dublin?
- Dublin, at 1.18% of assessed value against 1.22% for fiscal year 2025-26 — a gap of 0.040%. 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 Dublin?
- $48 per month on the identical reference loan: Bay Farm Island, Alameda $9,917, Dublin $9,869. Dublin 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 Dublin?
- Bay Farm Island, Alameda. Bay Farm Island, Alameda is 20 min by car; Dublin is 38 min by BART. Door-to-door, AM peak. Source: data/commute/static.csv.
- What is the price per square foot difference between Bay Farm Island, Alameda and Dublin?
- $30 per square foot: Bay Farm Island, Alameda $750, Dublin $720. Single-family medians, trailing twelve months. A median is not a valuation of any specific property.