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Single Family ResidenceResidential
$983,341$352 / 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 89How 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 $510,000 on May 20, 2019

148 LIBRARY ST

MYSTIC, CT 06355
4
Beds
2.5
Baths
2,797 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.
0.28 ac
Lot SizeThe size of the land the home sits on, from county records.
2006
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.

Valuation

$983K
$872K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$510,000 · May 20, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,780 (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.$469,490 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$224,784
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$244,706
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$469,490
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$328,643

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.32
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
15
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
48
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
80
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
16
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.minimal

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.Colonial
CountySOUTHEASTERN CONNECTICUT
Lot (acres)The size of the land the home sits on, from county records.0.28
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
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
Northeast Academy Arts Magnet SchoolB+
Elementary · Grades PK–5 · 2.0 mi
H
Robert E. Fitch High SchoolC+
High · Grades 9–12 · 2.0 mi
M
Groton Middle SchoolC
Middle · Grades 6–8 · 2.0 mi

District: Groton School District

Neighborhood · ZIP 06355These 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.64
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.106
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.55

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.10,797
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.722 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$124,279
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$137,807
Average tempThe average temperature here across a full year.50°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.56%

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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

148 Library St 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 96% of homes in Southeastern Connecticut County
  • Costs more per square foot than 81% of homes in Southeastern Connecticut County
  • Bigger than 92% of homes in Southeastern Connecticut County
  • Has a smaller lot than 75% of homes in Mystic 06355
  • Newer than 93% of homes in Southeastern Connecticut County

What homes are worth in Mystic 06355

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

This home
$287K$1.9M

This home is worth more than 89% of homes in Mystic 06355.

How it measures up in Mystic 06355

The dot is this home. The mark in the middle is the typical home in Mystic 06355.

Estimated value$983,341
CheaperTypical $566,692Pricier

Pricier than 89% of homes nearby

Price per ft²$352
CheaperTypical $332Pricier

Pricier than 58% of homes nearby

Living area2,797 ft²
SmallerTypical 1,729 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.28 ac
SmallerTypical 0.38 acBigger

Bigger than 25% of homes nearby

Year built2006
OlderTypical 1968Newer

Newer than 92% of homes nearby

How 148 Library St ranks against every home in each area.
MeasureThis homeMystic 06355Southeastern Connecticut County
Estimated valuepricier than$983,34189% of homes96% of homes
Price per ft²pricier than$35258% of homes81% of homes
Living areabigger than2,797 ft²91% of homes92% of homes
Lot sizebigger than0.28 ac25% of homes27% of homes
Year builtnewer than200692% of homes93% of homes

About 148 Library St

How much is 148 Library St, Mystic, CT worth?

The TopHap Estimate for 148 Library St, Mystic, CT is $983,341 as of Sep 24, 2026. The likely range is $872,275 to $1,094,407. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 148 Library St, Mystic, CT last sell?

148 Library St, Mystic, CT last sold on May 20, 2019 for $510,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 148 Library St, Mystic, CT?

148 Library St, Mystic, CT has 4 bedrooms, 2.5 bathrooms, 2,797 square feet of living space and a 0.28-acre lot.

When was 148 Library St, Mystic, CT built?

148 Library St, Mystic, CT was built in 2006, making it 20 years old. It is a colonial home. The building has 2 stories.

What schools serve 148 Library St, Mystic, CT?

148 Library St, Mystic, CT is assigned to Northeast Academy Arts Magnet School (elementary), rated B+; Robert E. Fitch High School (high), rated C+; Groton Middle School (middle), rated C. All sit in Groton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 148 Library St, Mystic, CT compare to other homes in Mystic 06355?

Among the 5,148 homes in Mystic 06355, it is worth more than 89% of them ($983,341 against a typical $566,692), its price per square foot is higher than 58% of them ($352 against a typical $332), it is bigger than 91% of them (2,797 ft² against a typical 1,729 ft²), its lot is bigger than 25% of them (0.28 ac against a typical 0.38 ac) and it is newer than 92% of them (2006 against a typical 1968). Measured against all of Southeastern Connecticut County, it is worth more than 96% 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 148 Library St, Mystic, CT?

The 2025 property tax bill for 148 Library St, Mystic, CT was $12,780. The county assessed it at $469,490.

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