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CondominiumResidential
Last sold for $190,000 on May 15, 2024

30 DIAMOND AVE

PLAINVILLE, CT 06062
658 ft²
Lot SizeThe size of the land the home sits on, from county records.
1966
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
Built 196629 units702–1,200 ft²
$6.3M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$231K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$220
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-38.6%vs the Plainville ZIP median sale $/ft² ($358)

Sales Performance

$145K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
+19.3%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
1
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
3.4%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+6.3%per yeartypical hold 7.2 yrsfrom 27 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19871991199519992002200620152025
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19871991199519992002200620152025

57 arms-length sales on record for this building.

Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.

Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
$148K$187K$226K$266K702 ft²802 ft²901 ft²1,001 ft²1,100 ft²1,200 ft²
1 bd2 bd4+ bd
1 bed
8 units
2 bed
20 units
4 bed
1 unit
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
2 bd · 1.5 ba · 1,200 ft²
11 units
2 bd · 1 ba · 1,044 ft²
5 units
1 bd · 1 ba · 702 ft²
4 units
1 bd · 1 ba · 718 ft²
4 units
2 bd · 1 ba · 952 ft²
4 units
One-off layouts
1 unit

Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.

$148K–$161K
6 units
$171K–$176K
2 units
$212K–$220K
3 units
$224K–$235K
6 units
$245K–$251K
8 units
$256K–$266K
4 units

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.79%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.0%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.18.8 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.20%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.39%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$240,939
Median tax billThe middle annual property tax bill among the building's units.$2,665
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0

Recent SalesThe latest recorded arms-length sales in the building, newest first.

Unit 20Sep 23, 2025$145,000Unit 11Dec 19, 2024$155,000Unit 11Sep 24, 2024$88,000Unit 18Jul 8, 2024$220,000BuildingMay 15, 2024$190,000Unit 20Sep 2, 2021$90,000Unit 4Dec 4, 2017$42,000Unit 18May 28, 2015$103,000Unit 3Oct 31, 2013$104,000Unit 23Aug 20, 2009$139,500

Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,795 (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.$81,340 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$81,340
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$81,340
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$56,938

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyCAPITOL
HeatingThe type of heating system in the home.Baseboard
CoolingThe type of cooling or air conditioning in the home.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.

Foreclosure Filings(1)

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

H
Plainville High SchoolB-
High · Grades 9–12 · 0.3 mi
E
Linden Street SchoolC+
Elementary · Grades PK–5 · 0.5 mi
M
Middle School of PlainvilleB
Middle · Grades 6–8 · 1.9 mi

District: Plainville School District

Neighborhood · ZIP 06062These 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.93
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 100.70

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.1%
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.17,194
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,873 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,451
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$100,792
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.51 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.

30 Diamond Ave
2 bd · 1.5 ba · 1,200 ft²
$251K
30 Diamond Ave # 1
2 bd · 1.5 ba · 1,200 ft²
$249K
30 Diamond Ave # 2
2 bd · 1.5 ba · 1,200 ft²
$249K
30 Diamond Ave
2 bd · 1.5 ba · 1,200 ft²
$249K
30 Diamond Ave # 4
1 bd · 1 ba · 702 ft²
$171K
30 Diamond Ave # 5
1 bd · 1 ba · 718 ft²
$150K
30 Diamond Ave # 6
2 bd · 1 ba · 952 ft²
$219K
30 Diamond Ave # 7
2 bd · 1 ba · 1,044 ft²
$235K
30 Diamond Ave # 8
4 bd · 1 ba · 1,044 ft²
$227K
30 Diamond Ave # 9
2 bd · 1 ba · 1,044 ft²
$234K
30 Diamond Ave # 10
2 bd · 1 ba · 952 ft²
$212K
30 Diamond Ave # 11
1 bd · 1 ba · 702 ft²
$176K
30 Diamond Ave # 12
1 bd · 1 ba · 718 ft²
$158K
30 Diamond Ave # 13
2 bd · 1.5 ba · 1,200 ft²
$256K
30 Diamond Ave # 14
2 bd · 1.5 ba · 1,200 ft²
$257K
30 Diamond Ave # 15
2 bd · 1.5 ba · 1,200 ft²
$245K
30 Diamond Ave # 16
2 bd · 1.5 ba · 1,200 ft²
$249K
30 Diamond Ave # 17
2 bd · 1.5 ba · 1,200 ft²
$266K
30 Diamond Ave # 18
2 bd · 1.5 ba · 1,200 ft²
$264K
30 Diamond Ave # 19
1 bd · 1 ba · 702 ft²
$161K
30 Diamond Ave # 20
1 bd · 1 ba · 718 ft²
$155K
30 Diamond Ave # 21
2 bd · 1 ba · 952 ft²
$220K
30 Diamond Ave # 22
2 bd · 1 ba · 1,044 ft²
$231K
30 Diamond Ave # 23
2 bd · 1 ba · 1,044 ft²
$248K
30 Diamond Ave # 24
2 bd · 1 ba · 1,044 ft²
$230K
30 Diamond Ave # 25
2 bd · 1 ba · 952 ft²
$224K
30 Diamond Ave # 26
1 bd · 1 ba · 702 ft²
$148K
30 Diamond Ave # 27
1 bd · 1 ba · 718 ft²
$149K
30 Diamond Ave # 28
2 bd · 1.5 ba · 1,200 ft²
$248K
30 Diamond Ave # 29
2 bd · 1.5 ba · 1,200 ft²
$251K

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

About 30 Diamond Ave

How many units are in 30 Diamond Ave, Plainville, CT?

30 Diamond Ave, Plainville, CT has 29 residential units across built in 1966, according to county assessor records.

What is a unit at 30 Diamond Ave, Plainville, CT worth?

The median TopHap Estimate across the 29 units at 30 Diamond Ave, Plainville, CT is $230,635. That works out to $220 per square foot. Units run from 702 to 1,200 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 30 Diamond Ave, Plainville, CT expensive for Plainville?

Units at 30 Diamond Ave, Plainville, CT carry a median of $220 per square foot, 39% below the Plainville median of $358 per square foot.

How often do units sell at 30 Diamond Ave, Plainville, CT?

1 units at 30 Diamond Ave, Plainville, CT sold in the last 12 months, out of 57 recorded arms-length sales all time. That is a turnover rate of 3.4% of the building per year. The median sale over that period was $145K.

Have units at 30 Diamond Ave, Plainville, CT appreciated?

Across 27 repeat sales of the same unit, 30 Diamond Ave, Plainville, CT returned a median 6.3% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 7.2 years.

What floor plans does 30 Diamond Ave, Plainville, CT have?

The most common plan at 30 Diamond Ave, Plainville, CT is a 2-bedroom of 1,200 square feet, repeated 11 times, with a median estimate of $248,930. TopHap identifies 5 recurring plans in the building.

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Assigned schools

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