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Single Family ResidenceResidential
$2,108,054$517 / 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 79How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $789,900 on Dec 14, 2018

3660 W ROUND PEN

FLAGSTAFF, AZ 86005
0
Baths
4,074 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.
0.68 ac
Lot SizeThe size of the land the home sits on, from county records.
2010
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$2.1M
$1.7M low$2.6M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$789,900 · Dec 14, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,757 (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.$158,079 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$152,531
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,580,794

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.Bi-Level
CountyCOCONINO
Lot (acres)The size of the land the home sits on, from county records.0.68
RoofThe main material covering the roof, such as asphalt shingle or tile.Asbestos
HeatingThe type of heating system in the home.Hot Water
CoolingThe type of cooling or air conditioning in the home.Chilled Water
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, Built-in
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 216 ft²

Transaction History(9)

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

Foreclosure Filings(2)

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

E
DeMiguel Elementary SchoolA
Elementary · Grades KG–5 · 1.5 mi
H
Flagstaff High SchoolB
High · Grades 9–12 · 3.6 mi
M
Mount Elden Middle SchoolC
Middle · Grades 6–8 · 6.0 mi

District: Flagstaff Unified District

Neighborhood · ZIP 86005These 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.91
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.73

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.72%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.16,190
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.54 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,855
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,098
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.24 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.79%

Owner Tools

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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

3660 W Round Pen 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 97% of homes in Coconino County
  • Costs more per square foot than 88% of homes in Coconino County
  • Bigger than 96% of homes in Coconino County
  • Has a bigger lot than 87% of homes in Flagstaff 86005
  • Newer than 90% of homes in Coconino County

What homes are worth in Flagstaff 86005

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

This home
$312K$3.5M

This home is worth more than 90% of homes in Flagstaff 86005.

How it measures up in Flagstaff 86005

The dot is this home. The mark in the middle is the typical home in Flagstaff 86005.

Estimated value$2,108,054
CheaperTypical $752,333Pricier

Pricier than 90% of homes nearby

Price per ft²$517
CheaperTypical $411Pricier

Pricier than 76% of homes nearby

Living area4,074 ft²
SmallerTypical 1,871 ft²Bigger

Bigger than 93% of homes nearby

Lot size0.68 ac
SmallerTypical 0.23 acBigger

Bigger than 87% of homes nearby

Year built2010
OlderTypical 1998Newer

Newer than 86% of homes nearby

How 3660 W Round Pen ranks against every home in each area.
MeasureThis homeFlagstaff RanchFlagstaff 86005Coconino County
Estimated valuepricier than$2,108,05488% of homes90% of homes97% of homes
Price per ft²pricier than$51755% of homes76% of homes88% of homes
Living areabigger than4,074 ft²89% of homes93% of homes96% of homes
Lot sizebigger than0.68 ac81% of homes87% of homes68% of homes
Year builtnewer than201042% of homes86% of homes90% of homes

About 3660 W Round Pen

How much is 3660 W Round Pen, Flagstaff, AZ worth?

The TopHap Estimate for 3660 W Round Pen, Flagstaff, AZ is $2,108,054 as of Oct 21, 2026. The likely range is $1,664,358 to $2,551,750. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3660 W Round Pen, Flagstaff, AZ last sell?

3660 W Round Pen, Flagstaff, AZ last sold on Dec 14, 2018 for $789,900, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 3660 W Round Pen, Flagstaff, AZ?

3660 W Round Pen, Flagstaff, AZ has 4,074 square feet of living space and a 0.68-acre lot.

When was 3660 W Round Pen, Flagstaff, AZ built?

3660 W Round Pen, Flagstaff, AZ was built in 2010, making it 16 years old. It is a bi-level home. The building has 2 stories.

What schools serve 3660 W Round Pen, Flagstaff, AZ?

3660 W Round Pen, Flagstaff, AZ is assigned to DeMiguel Elementary School (elementary), rated A; Flagstaff High School (high), rated B; Mount Elden Middle School (middle), rated C. All sit in Flagstaff Unified District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3660 W Round Pen, Flagstaff, AZ compare to other homes in Flagstaff 86005?

Among the 7,662 homes in Flagstaff 86005, it is worth more than 90% of them ($2,108,054 against a typical $752,333), its price per square foot is higher than 76% of them ($517 against a typical $411), it is bigger than 93% of them (4,074 ft² against a typical 1,871 ft²), its lot is bigger than 87% of them (0.68 ac against a typical 0.23 ac) and it is newer than 86% of them (2010 against a typical 1998). Measured against all of Coconino County, it is worth more than 97% 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 3660 W Round Pen, Flagstaff, AZ?

The 2025 property tax bill for 3660 W Round Pen, Flagstaff, AZ was $5,757. The county assessed it at $158,079.

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