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CondominiumResidential

490 Main St

NORTHBOROUGH, MA 01532
12.26 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.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.
Built 20063 floors48 units1,220–1,800 ft²
$21M
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.
$447K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$300
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+8.4%vs the Northborough ZIP median sale $/ft² ($277)

Sales Performance

$445K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
-2.6%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
7
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
14.6%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+1.6%per yeartypical hold 9.8 yrsfrom 36 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
20052008201120142017202020232026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
20052008201120142017202020232026

78 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.
$390K$431K$472K$513K1,220 ft²1,336 ft²1,452 ft²1,568 ft²1,684 ft²1,800 ft²
1 bd2 bd
1 bed
13 units
2 bed
35 units
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.
1 bd · 1.5 ba · 1,220 ft²
12 units
2 bd · 2 ba · 1,600 ft²
11 units
2 bd · 2 ba · 1,430 ft²
10 units
2 bd · 2 ba · 1,640 ft²
10 units
2 bd · 2 ba · 1,800 ft²
2 units
One-off layouts
3 units

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.

$390K–$400K
12 units
$419K–$419K
1 unit
$423K–$429K
4 units
$438K–$451K
9 units
$461K–$464K
2 units
$472K–$481K
9 units
$483K–$497K
8 units
$499K–$513K
3 units

Value by Floor & LineAverage estimated price per square foot by floor range, using unit numbers to infer floors. Higher floors usually price higher — the gap shows how much the view is worth here.

Floor 1
$304/ft²
Floor 2
$303/ft²
Floor 3
$302/ft²
Unit lines by $/ft²Condo units stacked vertically share a unit line — the last digits of the unit number (like 05 in 1205, 1305, 1405). Lines share a layout and exposure, so comparing estimated $/ft² by line shows which position in the building commands a premium.
Line ·14
$326/ft²
Line ·06
$324/ft²
Line ·05
$324/ft²
Line ·13
$323/ft²
Line ·09
$306/ft²
Line ·10
$302/ft²
Line ·08
$301/ft²
Line ·16
$301/ft²
Line ·01
$298/ft²
Line ·15
$295/ft²
Line ·02
$295/ft²
Line ·12
$295/ft²

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.85%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.33%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.7.9 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.67%
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.20%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$453,343
Median tax billThe middle annual property tax bill among the building's units.$6,197
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 209Jul 29, 2026$425,000Unit 114Jun 18, 2026$400,000Unit 109Apr 30, 2026$455,000Unit 107Feb 6, 2026$470,000Unit 301Jan 2, 2026$445,000Unit 101Dec 19, 2025$425,000Unit 210Oct 30, 2025$450,000Unit 104Mar 10, 2025$450,000Unit 215Oct 7, 2024$463,500Unit 202Jun 20, 2024$440,000

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

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountyWORCESTER
Lot (acres)The size of the land the home sits on, from county records.12.26
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

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

H
Algonquin Regional High SchoolA
High · Grades 9–12 · 0.8 mi
E
Marguerite E PeasleeA
Elementary · Grades KG–5 · 1.5 mi
M
Robert E. Melican Middle SchoolB-
Middle · Grades 6–8 · 3.0 mi

District: Northborough-Southborough School District

Neighborhood · ZIP 01532These 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.31
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.68

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.16,278
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.868 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$158,286
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$198,404
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.50%

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.

490 Main St # 101
2 bd · 2 ba · 1,430 ft²
$419K
490 Main St # 102
2 bd · 2 ba · 1,430 ft²
$428K
490 Main St # 103
2 bd · 2 ba · 1,640 ft²
$473K
490 Main St # 104
1 bd · 2 ba · 1,640 ft²
$438K
490 Main St # 105
1 bd · 1.5 ba · 1,220 ft²
$390K
490 Main St # 106
1 bd · 1.5 ba · 1,220 ft²
$398K
490 Main St # 107
2 bd · 2 ba · 1,600 ft²
$464K
490 Main St # 108
2 bd · 2 ba · 1,600 ft²
$484K
490 Main St # 109
2 bd · 2 ba · 1,430 ft²
$451K
490 Main St # 110
2 bd · 2 ba · 1,430 ft²
$446K
490 Main St # 111
2 bd · 2 ba · 1,640 ft²
$486K
490 Main St # 112
2 bd · 2 ba · 1,640 ft²
$497K
490 Main St # 113
1 bd · 1.5 ba · 1,220 ft²
$390K
490 Main St # 114
1 bd · 1.5 ba · 1,220 ft²
$398K
490 Main St # 115
2 bd · 2 ba · 1,600 ft²
$481K
490 Main St # 116
2 bd · 1.5 ba · 1,600 ft²
$472K
490 Main St # 201
2 bd · 2 ba · 1,430 ft²
$423K
490 Main St # 202
2 bd · 2 ba · 1,430 ft²
$429K
490 Main St # 203
2 bd · 2 ba · 1,640 ft²
$483K
490 Main St # 204
2 bd · 2 ba · 1,640 ft²
$485K
490 Main St # 205
1 bd · 1.5 ba · 1,220 ft²
$400K
490 Main St # 206
1 bd · 1.5 ba · 1,220 ft²
$391K
490 Main St # 207
2 bd · 2 ba · 1,600 ft²
$481K
490 Main St # 208
2 bd · 2 ba · 1,600 ft²
$480K
490 Main St # 209
2 bd · 2 ba · 1,430 ft²
$424K
490 Main St # 210
2 bd · 2 ba · 1,430 ft²
$442K
490 Main St # 211
2 bd · 1.5 ba · 1,640 ft²
$443K
490 Main St # 212
2 bd · 2 ba · 1,640 ft²
$475K
490 Main St # 213
1 bd · 1.5 ba · 1,220 ft²
$395K
490 Main St # 214
1 bd · 1.5 ba · 1,220 ft²
$398K
490 Main St # 215
2 bd · 2 ba · 1,600 ft²
$448K
490 Main St # 216
2 bd · 2 ba · 1,600 ft²
$499K
490 Main St # 301
2 bd · 2 ba · 1,430 ft²
$439K
490 Main St # 302
2 bd · 2 ba · 1,800 ft²
$513K
490 Main St # 303
2 bd · 2 ba · 1,640 ft²
$479K
490 Main St # 304
2 bd · 2 ba · 1,640 ft²
$446K
490 Main St # 305
1 bd · 1.5 ba · 1,220 ft²
$395K
490 Main St # 306
1 bd · 1.5 ba · 1,220 ft²
$398K
490 Main St # 307
2 bd · 2 ba · 1,600 ft²
$461K
490 Main St # 308
2 bd · 2 ba · 1,600 ft²
$483K
490 Main St # 309
2 bd · 2 ba · 1,430 ft²
$438K
490 Main St # 310
2 bd · 2 ba · 1,800 ft²
$511K
490 Main St # 311
2 bd · 2 ba · 1,640 ft²
$491K
490 Main St # 312
2 bd · 2 ba · 1,640 ft²
$477K
490 Main St # 313
1 bd · 1.5 ba · 1,220 ft²
$396K
490 Main St # 314
1 bd · 1.5 ba · 1,220 ft²
$397K
490 Main St # 315
2 bd · 2 ba · 1,600 ft²
$487K
490 Main St # 316
2 bd · 2 ba · 1,600 ft²
$475K

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

About 490 Main St

How many units are in 490 Main St, Northborough, MA?

490 Main St, Northborough, MA has 48 residential units across 3 floors, built in 2006, according to county assessor records.

What is a unit at 490 Main St, Northborough, MA worth?

The median TopHap Estimate across the 48 units at 490 Main St, Northborough, MA is $447,332. That works out to $300 per square foot. Units run from 1,220 to 1,800 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 490 Main St, Northborough, MA expensive for Northborough?

Units at 490 Main St, Northborough, MA carry a median of $300 per square foot, 8% above the Northborough median of $277 per square foot.

How often do units sell at 490 Main St, Northborough, MA?

7 units at 490 Main St, Northborough, MA sold in the last 12 months, out of 78 recorded arms-length sales all time. That is a turnover rate of 14.6% of the building per year. The median sale over that period was $445K.

Have units at 490 Main St, Northborough, MA appreciated?

Across 36 repeat sales of the same unit, 490 Main St, Northborough, MA returned a median 1.6% 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 9.8 years.

What floor plans does 490 Main St, Northborough, MA have?

The most common plan at 490 Main St, Northborough, MA is a 1-bedroom of 1,220 square feet, repeated 12 times, with a median estimate of $396,811. TopHap identifies 5 recurring plans in the building.

More homes on Main St

Closest homes

More homes in Northborough 01532

Assigned schools

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