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CondominiumResidential

23 Spencer Rd

BOXBOROUGH, MA 01719
10.45 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
Built 197312 units500–910 ft²
$2.7M
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.
$227K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$271
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+10.3%vs the Boxborough ZIP median sale $/ft² ($246)

Sales Performance

—
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
—
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
0
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
0.0%
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.
+3.1%per yeartypical hold 7.3 yrsfrom 10 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
19871991199420052011201820212025
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
19871991199420052011201820212025

22 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.
$184K$213K$241K$270K500 ft²582 ft²664 ft²746 ft²828 ft²910 ft²
1 bd2 bd
1 bed
6 units
2 bed
6 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.
2 bd · 1 ba · 910 ft²
6 units
1 bd · 1 ba · 760 ft²
5 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.

$184K–$187K
2 units
$200K–$203K
2 units
$206K–$206K
1 unit
$219K–$219K
1 unit
$234K–$234K
2 units
$247K–$247K
1 unit
$252K–$252K
1 unit
$264K–$270K
2 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.25%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.25%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.9.3 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.30%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$211,084
Median tax billThe middle annual property tax bill among the building's units.$3,353
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 20FAug 14, 2025$184,000Unit 20FApr 6, 2023$172,000Unit 36FNov 24, 2021$175,000Unit 22FJul 19, 2021$168,000Unit 14FSep 4, 2020$132,000Unit 16FFeb 15, 2019$140,000Unit 22FMar 30, 2018$130,600Unit 32FJan 5, 2018$120,000Unit 30FApr 12, 2012$61,000Unit 16FApr 26, 2011$92,000

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

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.197 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 percent flood zone

Scores 0–100; higher = greater projected risk.

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
CountyMIDDLESEX
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Electric
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.

E
Blanchard Memorial SchoolA-
Elementary · Grades KG–6 · 2.0 mi
H
Acton - Boxborough Regional High SchoolA
High · Grades 9–12 · 4.4 mi
M
R. J. Grey Junior High SchoolA
Middle · Grades 7–8 · 4.5 mi

District: Acton-Boxborough School District

Neighborhood · ZIP 01719These 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.148
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.99
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.67

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.38%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.5,481
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.532 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$150,967
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$164,937
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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.

23 Spencer Rd # 12f
1 bd · 1 ba · 760 ft²
$200K
23 Spencer Rd # 14f
1 bd · 1 ba · 500 ft²
$187K
23 Spencer Rd Apt 16f
2 bd · 1 ba · 910 ft²
$264K
23 Spencer Rd # 18f
2 bd · 1 ba · 910 ft²
$234K
23 Spencer Rd # 20f
1 bd · 1 ba · 760 ft²
$184K
23 Spencer Rd # 22f
1 bd · 1 ba · 760 ft²
$206K
23 Spencer Rd # 24f
2 bd · 1 ba · 910 ft²
$234K
23 Spencer Rd # 26f
2 bd · 1 ba · 910 ft²
$270K
23 Spencer Rd # 30f
1 bd · 1 ba · 760 ft²
$203K
23 Spencer Rd # 32f
1 bd · 1 ba · 760 ft²
$219K
23 Spencer Rd # 34f
2 bd · 1 ba · 910 ft²
$252K
23 Spencer Rd # 36f
2 bd · 1 ba · 910 ft²
$247K

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

About 23 Spencer Rd

How many units are in 23 Spencer Rd, Boxborough, MA?

23 Spencer Rd, Boxborough, MA has 12 residential units across built in 1973, according to county assessor records.

What is a unit at 23 Spencer Rd, Boxborough, MA worth?

The median TopHap Estimate across the 12 units at 23 Spencer Rd, Boxborough, MA is $226,657. That works out to $271 per square foot. Units run from 500 to 910 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 23 Spencer Rd, Boxborough, MA expensive for Boxborough?

Units at 23 Spencer Rd, Boxborough, MA carry a median of $271 per square foot, 10% above the Boxborough median of $246 per square foot.

How often do units sell at 23 Spencer Rd, Boxborough, MA?

0 units at 23 Spencer Rd, Boxborough, MA sold in the last 12 months, out of 22 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.

Have units at 23 Spencer Rd, Boxborough, MA appreciated?

Across 10 repeat sales of the same unit, 23 Spencer Rd, Boxborough, MA returned a median 3.1% 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 7.3 years.

What floor plans does 23 Spencer Rd, Boxborough, MA have?

The most common plan at 23 Spencer Rd, Boxborough, MA is a 2-bedroom of 910 square feet, repeated 6 times, with a median estimate of $249,116. TopHap identifies 2 recurring plans in the building.

More homes on Spencer Rd

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Assigned schools

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