Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$770,491$345 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 82How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $37,500 on Feb 25, 2014

691 OYSTER RIVER RD

WARREN, ME 04864
3
Beds
2
Baths
2,236 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
100 ac
Lot SizeThe size of the land the home sits on, from county records.
1999
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$770K
$629K low$912K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$37,500 · Feb 25, 2014
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$770,491
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$616,393

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,834 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$551,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$137,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$414,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$549,800

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.177 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyKNOX
Lot (acres)The size of the land the home sits on, from county records.100.00
ConstructionThe main material the home's frame and walls are built from.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(7)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Warren Community SchoolD
Elementary · Grades PK–6 · 1.8 mi
M
Medomak Middle SchoolB-
Middle · Grades 7–8 · 4.2 mi
H
Medomak Valley High SchoolC+
High · Grades 9–12 · 4.2 mi

District: School Administrative District 40

Neighborhood · ZIP 04864These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.56
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.79
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.54

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.88%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.4,804
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.101 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$83,709
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$101,350
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.49 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.50%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.Yes

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

691 Oyster River Rd measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth more than 98% of homes in Warren 04864
  • Costs more per square foot than 81% of homes in Warren 04864
  • Bigger than 86% of homes in Warren 04864
  • Among the largest lots in Knox County
  • Newer than 79% of homes in Knox County

What homes are worth in Warren 04864

Each bar is how many homes fall in that price range. The marker is this home.

This home
$175K$792K

This home is worth more than 98% of homes in Warren 04864.

How it measures up in Warren 04864

The dot is this home. The mark in the middle is the typical home in Warren 04864.

Estimated value$770,491
CheaperTypical $366,064Pricier

Pricier than 98% of homes nearby

Price per ft²$345
CheaperTypical $271Pricier

Pricier than 81% of homes nearby

Living area2,236 ft²
SmallerTypical 1,382 ft²Bigger

Bigger than 86% of homes nearby

Lot size100 ac
SmallerTypical 1.76 acBigger

Bigger than almost all homes nearby

Year built1999
OlderTypical 1987Newer

Newer than 71% of homes nearby

How 691 Oyster River Rd ranks against every home in each area.
MeasureThis homeWarren 04864Knox County
Estimated valuepricier than$770,49198% of homes82% of homes
Price per ft²pricier than$34581% of homes66% of homes
Living areabigger than2,236 ft²86% of homes78% of homes
Lot sizebigger than100 acalmost all homesalmost all homes
Year builtnewer than199971% of homes79% of homes

About 691 Oyster River Rd

How much is 691 Oyster River Rd, Warren, ME worth?

The TopHap Estimate for 691 Oyster River Rd, Warren, ME is $770,491 as of Jul 14, 2026. The likely range is $629,204 to $911,778. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 691 Oyster River Rd, Warren, ME last sell?

691 Oyster River Rd, Warren, ME last sold on Feb 25, 2014 for $37,500, according to the county's recorded deed.

How big is 691 Oyster River Rd, Warren, ME?

691 Oyster River Rd, Warren, ME has 3 bedrooms, 2 bathrooms, 2,236 square feet of living space and a 100.00-acre lot.

When was 691 Oyster River Rd, Warren, ME built?

691 Oyster River Rd, Warren, ME was built in 1999, making it 27 years old. It is a conventional home. The building has 1 story.

What schools serve 691 Oyster River Rd, Warren, ME?

691 Oyster River Rd, Warren, ME is assigned to Warren Community School (elementary), rated D; Medomak Middle School (middle), rated B-; Medomak Valley High School (high), rated C+. All sit in School Administrative District 40. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 691 Oyster River Rd, Warren, ME compare to other homes in Warren 04864?

Among the 1,903 homes in Warren 04864, it is worth more than 98% of them ($770,491 against a typical $366,064), its price per square foot is higher than 81% of them ($345 against a typical $271), it is bigger than 86% of them (2,236 ft² against a typical 1,382 ft²), its lot is bigger than almost all of them (100 ac against a typical 1.76 ac) and it is newer than 71% of them (1999 against a typical 1987). Measured against all of Knox County, it is worth more than 82% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 691 Oyster River Rd, Warren, ME?

The 2025 property tax bill for 691 Oyster River Rd, Warren, ME was $7,834. The county assessed it at $551,700.

Closest homes

More homes in Warren 04864

Assigned schools

Explore the area

See this home in context

Open 691 Oyster River Rd on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map