| Primary address | 27 Mountain Avenue, Bayville |
| Zip code | 11709 |
| County | Nassau |
| Town/City | Oyster Bay |
| Village (swiss code) | Bayville |
| Parcel ID | 29-102-31 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Building sqft | 1,523 |
| Building class | One Family Year - Round Residence (210.01) |
| Land | Primary site |
| Topography | Level |
| Acreage | 0.201 |
| Buildings on lot | 1 |
| Year built | 1950 |
| Stories | 1 |
| Style | Ranch |
| Rooms | 6 |
| Bathrooms | 2 |
| Attic | None |
| Basement | Full |
| Exterior wall | Alum/Vinyl |
| Heating type | Central/AC |
| Heating system | Central w ac |
| Fireplace | 1 |
| Zoning district | Register (See more on map) |
| School district | Bayville |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
Property reports include comprehensive occupancy, improvement and development information (where available).
Create a free account to access valuable data points such as:
27 Mountain Avenue, Bayville, NY 11709 was built in 1950 and has a total of 1,523 square feet.
What is the assessed value of 27 Mountain Avenue, Bayville, NY 11709 and the property tax paid?Assessed at $409, the tax amount paid for 27 Mountain Avenue, Bayville, NY 11709 is $8,336.
When was 27 Mountain Avenue, Bayville, NY 11709 last sold?27 Mountain Avenue, Bayville, NY 11709 was last sold in 10/02/2024.
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
Create a free account to view the complete sales history for 27 Mountain Avenue, Bayville, including title documents, transfer conditions, mortgages and liens.
To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.
R: Recorded date
D: Document date
Access detailed property tax data for 27 Mountain Avenue, Bayville, NY 11709. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2026 |
| Base tax | $8,337 |
| Current property tax | $7,171 |
| Tax class | Register |
| Market value | $409,000 |
| Assessed value | $409 |
Here's the assessment & property tax history for 27 Mountain Avenue, Bayville, including the evolution of the total tax rate and corresponding property tax.
| Year | Market value | Assessment value | Total tax rate | Property tax | Year over year change |
|---|---|---|---|---|---|
| 2026 | $409,000 | $409 | 2038.267 | $8,337 | +0.77% |
| 2025 | $414,000 | $414 | 1998.347 | $8,273 | -6.45% |
| 2024 | $433,000 | $414 | 2136.237 | $8,844 | -17.55% |
| 2023 | $480,000 | $480 | 2234.706 | $10,727 | +3.12% |
| 2022 | $433,000 | $433 | 2402.402 | $10,402 | -11.88% |
The complete history of permits filed for 27 Mountain Avenue, Bayville, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.
Create a free account to unlock extended information for 27 Mountain Avenue, Bayville, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).
| FEMA flood zone(s) | X (See more on map) |
Access the detailed traffic volume map for 27 Mountain Avenue, Bayville to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
| View daily traffic map |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Bayville Intermediate School | 7 | Public | 3-5 | 190 | 0.17 |
| Bayville Elementary School | NR | Public | K-2 | 179 | 0.27 |
| Mill Neck Manor School For The Deaf | NR | Private | PK, K-11 | 116 | 1.49 |
| Mill Neck Manor School For The Deaf | NR | Private | PK, K-11 | 116 | 1.49 |
| Mill Neck Manor School for the Deaf | NR | Private | PK-12 | 106 | 1.62 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Mill Neck Manor School For The Deaf | NR | Private | PK, K-11 | 116 | 1.49 |
| Mill Neck Manor School for the Deaf | NR | Private | PK-12 | 106 | 1.62 |
| Mill Neck Manor School for Deaf Child | NR | Private | PK, K-12 | 0 | 1.64 |
| Locust Valley Middle School | 8 | Public | 6-8 | 472 | 2.11 |
| Portledge School | NR | Private | PK-12 | 522 | 2.83 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Mill Neck Manor School For The Deaf | NR | Private | PK, K-11 | 116 | 1.49 |
| Mill Neck Manor School for the Deaf | NR | Private | PK-12 | 106 | 1.62 |
| Mill Neck Manor School for Deaf Child | NR | Private | PK, K-12 | 0 | 1.64 |
| Locust Valley High School | 9 | Public | 9-12 | 629 | 2.11 |
| Portledge School | NR | Private | PK-12 | 522 | 2.83 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 27 Mountain Avenue, Bayville.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 7 Mountain Ave, Bayville | 1,512 | 08/05/2009 | $637,500 |
| 29 Mountain Ave, Bayville | 2,840 | 12/22/2008 | $399,000 |
| 5 Overlook Ave, Bayville | 3,273 | 10/27/2025 | |
| 15 Fairview Ave, Bayville | 1,152 | 04/03/2018 | $465,000 |
| 28 Overlook Ave, Bayville | 1,248 | ||
| 17 Mountain Ave, Bayville | 1,422 | 09/09/2004 | $545,000 |
| 3 Mountain Ave, Bayville | 1,842 | 05/20/2021 | $750,000 |
| 142 Bayville Ave, Bayville | 2,527 | 08/17/2023 | $825,000 |
| 34 Ridge Rd, Bayville | 1,104 | 06/11/2020 | |
| 146 Bayville Ave, Bayville | 1,575 | 10/11/2000 | |
| 22 Ridge Rd, Bayville | 1,809 | 05/21/2012 | $420,000 |
| 24 Ridge Rd, Bayville | 1,268 | 03/31/1993 | |
| 19 Mountain Ave, Bayville | 1,176 | 10/09/2023 | |
| 15 Mountain Ave, Bayville | 1,633 | ||
| 5 Mountain Ave, Bayville | 1,428 | 07/12/2007 | $460,000 |
| 32 Ridge Rd, Bayville | 1,958 | 02/26/1993 | $289,000 |
| 1 Overlook Ave, Bayville | 2,627 | 11/24/2020 | $775,000 |
| 3 Overlook Ave, Bayville | 1,967 | 06/27/1997 | $350,000 |
| 25 Fairview Ave, Bayville | 1,100 | 08/12/1999 | $325,000 |
| 11 Mountain Ave, Bayville | 8,832 |