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CondominiumResidential

1 OLSON ST

WILMINGTON, MA 01887
5.7 ac
Lot SizeThe size of the land the home sits on, from county records.
2009
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
Built 200720 units1,504–1,595 ft²
$13M
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.
$758K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$497
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+5423.4%vs the Wilmington ZIP median sale $/ft² ($9)

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.
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
2014201720182020202120232024
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
2014201720182020202120232024

13 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.
$716K$745K$775K$805K1,504 ft²1,522 ft²1,540 ft²1,559 ft²1,577 ft²1,595 ft²
2 bd
2 bed
20 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 · 2.5 ba · 1,534 ft²
8 units
2 bd · 2.5 ba · 1,524 ft²
4 units
2 bd · 2.5 ba · 1,595 ft²
4 units
One-off layouts
4 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.

$716K–$723K
2 units
$744K–$746K
3 units
$750K–$758K
4 units
$764K–$770K
6 units
$793K–$793K
1 unit
$805K–$805K
1 unit

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.95%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.5%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.9.0 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.0%
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.59%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$753,858
Median tax billThe middle annual property tax bill among the building's units.$7,655
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 12Nov 5, 2024$179,000Unit 19Jun 18, 2024$693,000Unit 18May 18, 2023$686,000Unit 7Dec 2, 2021$610,000Unit 3Aug 20, 2021$605,000Unit 17Apr 27, 2020$526,000Unit 10Jul 12, 2018$513,000Unit 6Apr 30, 2018$495,000Unit 16Nov 30, 2017$482,500Unit 4Oct 25, 2017$478,000

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

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,416 (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.$647,700 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$647,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$591,755

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.25 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Condominium
CountyMIDDLESEX
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
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.Deck

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

H
Wilmington High SchoolB
High · Grades 9–12 · 0.7 mi
M
Wilmington Middle SchoolB
Middle · Grades 6–8 · 0.8 mi
E
Woburn Street Elementary SchoolA-
Elementary · Grades 1–3 · 1.9 mi

District: Wilmington School District

Neighborhood · ZIP 01887These 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.55
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.86

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.98%
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.2.6%
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.23,780
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,404 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$153,014
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$161,128
Average tempThe average temperature here across a full year.49°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.

1 Olson St
2 bd · 2.5 ba · 1,595 ft²
$724K
1 Olson St # 2
2 bd · 2.5 ba · 1,595 ft²
$793K
1 Olson St # 3
2 bd · 2.5 ba · 1,595 ft²
$765K
1 Olson St # 4
2 bd · 2.5 ba · 1,595 ft²
1 Olson St # 5
2 bd · 2.5 ba · 1,595 ft²
$805K
1 Olson St # 6
2 bd · 1.5 ba · 1,534 ft²
$764K
1 Olson St # 7
2 bd · 2.5 ba · 1,533 ft²
$746K
1 Olson St # 8
2 bd · 2.5 ba · 1,524 ft²
$758K
1 Olson St Unit 9
2 bd · 3 ba · 1,524 ft²
$770K
1 Olson St # 10
2 bd · 2.5 ba · 1,504 ft²
$750K
1 Olson St # 11
2 bd · 2.5 ba · 1,524 ft²
$746K
1 Olson St # 12
2 bd · 2.5 ba · 1,524 ft²
$766K
1 Olson St # 13
2 bd · 2.5 ba · 1,534 ft²
1 Olson St # 14
2 bd · 2.5 ba · 1,534 ft²
$769K
1 Olson St # 15
2 bd · 2.5 ba · 1,534 ft²
$769K
1 Olson St # 16
2 bd · 2.5 ba · 1,534 ft²
1 Olson St # 17
2 bd · 2.5 ba · 1,534 ft²
$716K
1 Olson St # 18
2 bd · 2.5 ba · 1,534 ft²
$744K
1 Olson St # 19
2 bd · 2.5 ba · 1,534 ft²
$723K
1 Olson St # 20
2 bd · 2.5 ba · 1,534 ft²
$756K
1 Olson St # 21
2 bd · 2.5 ba · 1,524 ft²
$753K

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

About 1 Olson St

How many units are in 1 Olson St, Wilmington, MA?

1 Olson St, Wilmington, MA has 20 residential units across built in 2007, according to county assessor records.

What is a unit at 1 Olson St, Wilmington, MA worth?

The median TopHap Estimate across the 20 units at 1 Olson St, Wilmington, MA is $758,135. That works out to $497 per square foot. Units run from 1,504 to 1,595 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 1 Olson St, Wilmington, MA expensive for Wilmington?

Units at 1 Olson St, Wilmington, MA carry a median of $497 per square foot, 5423% above the Wilmington median of $9 per square foot.

How often do units sell at 1 Olson St, Wilmington, MA?

0 units at 1 Olson St, Wilmington, MA sold in the last 12 months, out of 13 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.

What floor plans does 1 Olson St, Wilmington, MA have?

The most common plan at 1 Olson St, Wilmington, MA is a 2-bedroom of 1,534 square feet, repeated 8 times, with a median estimate of $750,046. TopHap identifies 3 recurring plans in the building.

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