Dukes County and Oak Bluffs Town property record for 21 Allen Ave, Oak Bluffs, MA 02557
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 950 sqft · built 1872 |
| Lot Size | 0.075 acres (3,271 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $4,098 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | OAKB M:0081 B:0088 L:000 |
| Primary APN | OAKB M:0081 B:0088 L:000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 2 Stories |
| Building Area | 950 sqft Living Area |
| Gross Area | 1,639 sqft |
| Year Built | Built 1872 |
|---|---|
| Effective Year Built | Effective 1988 |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 3,271 sqft (0.075 acres) |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Account Number | 4677 |
|---|---|
| Street Address | 21 ALLEN AVE |
| City | OAK BLUFFS |
| State | MA |
| Zip | 02557-6705 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Block | 88 |
| Jurisdiction | OAK BLUFFS MA |
| Township / Civil Division | OAK BLUFFS |
| Census Block Group | 2 |
| Census Block | 2031 |
| Census Tract | 200200 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Wesleyan Grove listed 2005 · 309 contributing resources · National Historic Landmark (designated 2005) · NRIS 05000458 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
21 Allen Ave, a single family home, is owned by two individuals.
Source: Dukes County and Oak Bluffs Town records, as of October 20, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | PO BOX 1124, OAK BLUFFS, MA 02557-1124 |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 21 Allen Ave was $4,098, down 1.6% from the year before.
Source: Dukes County and Oak Bluffs Town assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Dukes County |
| County Subdivision | Oak Bluffs Town |
| Elementary School District | Oak Bluffs School District (PK - 08) |
| Secondary School District | Martha's Vineyard School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $4,098.00 (-1.63%) | $811,400 (+1.86%) Building $811,400 | $896,035 |
| 2024 | $4,166.00 (-4.86%) | $796,600 (-3.95%) Building $796,600 | |
| 2023 | $4,379.00 | $829,400 Building $829,400 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 21 Allen Ave in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective February 7, 2025 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 50 individual policies |
| Nearby Flood Policies | 68 units insured incl. 18 condo units |
| Nearby Flood Claims | 6 (1991–1998) |
| Claims Outside the SFHA | 1 of 6 |
| Most Recent Claim | Jun 1998 · rainfall accumulation |
| Claims by Event |
|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
The area around 21 Allen Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | OAK BLUFFS WATER DISTRICT serves 24,000 people · EPA ID MA4221000 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | May 2025 |
| Lead | 4 ppb (2021–2023) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 286 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: AT&T.
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