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Single Family ResidenceResidential
$535,217$301 / 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 86How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $15,000 on Dec 5, 2008

20 MOUNTAIN AVE

WELLFLEET, MA 02667
4
Beds
3
Baths
1,779 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1928
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$535K
$460K low$611K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$15,000 · Dec 5, 2008

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,906 (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.$830,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$323,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$507,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,100,860

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.Colonial
CountyBARNSTABLE
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2008
Lot (acres)The size of the land the home sits on, from county records.0.15
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.No Foundation
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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
Wellfleet Elementary SchoolB+
Elementary · Grades KG–5 · 2.3 mi
H
Nauset Regional High SchoolB-
High · Grades 9–12 · 4.1 mi
M
Nauset Regional Middle SchoolB-
Middle · Grades 6–8 · 8.8 mi

District: Nauset School District

Neighborhood · ZIP 02667These 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.140
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.51

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.45%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.3,925
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.122 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$101,591
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$142,327
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.43 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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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

20 Mountain Ave 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 less than 83% of homes in Wellfleet 02667
  • Costs less per square foot than 96% of homes in Barnstable County
  • Has a smaller lot than 96% of homes in Wellfleet 02667
  • Older than 94% of homes in Barnstable County

What homes are worth in Wellfleet 02667

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

This home
$324K$2.3M

This home is worth more than 17% of homes in Wellfleet 02667.

How it measures up in Wellfleet 02667

The dot is this home. The mark in the middle is the typical home in Wellfleet 02667.

Estimated value$535,217
CheaperTypical $782,429Pricier

Pricier than 17% of homes nearby

Price per ft²$301
CheaperTypical $493Pricier

Pricier than 7% of homes nearby

Living area1,779 ft²
SmallerTypical 1,684 ft²Bigger

Bigger than 55% of homes nearby

Lot size0.15 ac
SmallerTypical 0.64 acBigger

Bigger than 4% of homes nearby

Year built1928
OlderTypical 1977Newer

Newer than 10% of homes nearby

How 20 Mountain Ave ranks against every home in each area.
MeasureThis homeWellfleet 02667Barnstable County
Estimated valuepricier than$535,21717% of homes17% of homes
Price per ft²pricier than$3017% of homes4% of homes
Living areabigger than1,779 ft²55% of homes61% of homes
Lot sizebigger than0.15 ac4% of homes6% of homes
Year builtnewer than192810% of homes6% of homes

About 20 Mountain Ave

How much is 20 Mountain Ave, Wellfleet, MA worth?

The TopHap Estimate for 20 Mountain Ave, Wellfleet, MA is $535,217 as of Sep 24, 2026. The likely range is $459,759 to $610,675. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Mountain Ave, Wellfleet, MA last sell?

20 Mountain Ave, Wellfleet, MA last sold on Dec 5, 2008 for $15,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 20 Mountain Ave, Wellfleet, MA?

20 Mountain Ave, Wellfleet, MA has 4 bedrooms, 3 bathrooms, 1,779 square feet of living space and a 0.15-acre lot.

When was 20 Mountain Ave, Wellfleet, MA built?

20 Mountain Ave, Wellfleet, MA was built in 1928, making it 98 years old. It is a colonial home. The building has 2 stories.

What schools serve 20 Mountain Ave, Wellfleet, MA?

20 Mountain Ave, Wellfleet, MA is assigned to Wellfleet Elementary School (elementary), rated B+; Nauset Regional High School (high), rated B-; Nauset Regional Middle School (middle), rated B-. All sit in Nauset School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Mountain Ave, Wellfleet, MA compare to other homes in Wellfleet 02667?

Among the 3,748 homes in Wellfleet 02667, it is worth more than 17% of them ($535,217 against a typical $782,429), its price per square foot is higher than 7% of them ($301 against a typical $493), it is bigger than 55% of them (1,779 ft² against a typical 1,684 ft²), its lot is bigger than 4% of them (0.15 ac against a typical 0.64 ac) and it is newer than 10% of them (1928 against a typical 1977). Measured against all of Barnstable County, it is worth more than 17% 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 20 Mountain Ave, Wellfleet, MA?

The 2025 property tax bill for 20 Mountain Ave, Wellfleet, MA was $5,906. The county assessed it at $830,600.

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