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CondominiumResidential

20 South Ave

NATICK, MA 01760
0.59 ac
Lot SizeThe size of the land the home sits on, from county records.
2008
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
Built 20083 floors24 units1,345–2,051 ft²
$18M
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.
$807K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$416
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-10.8%vs the Natick ZIP median sale $/ft² ($467)

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.
+3.9%per yeartypical hold 3.9 yrsfrom 13 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
20062009201120132014201820212025
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
20062009201120132014201820212025

36 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.
$346K$506K$665K$824K1,345 ft²1,486 ft²1,627 ft²1,769 ft²1,910 ft²2,051 ft²
2 bd
2 bed
24 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 ba · 1,941 ft²
3 units
2 bd · 2 ba · 1,937 ft²
2 units
2 bd · 2 ba · 1,942 ft²
2 units
One-off layouts
17 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.

$346K–$351K
3 units
$674K–$676K
2 units
$725K–$729K
2 units
$789K–$824K
17 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
$389/ft²
Floor 2
$409/ft²
Floor 3
$418/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 ·03
$497/ft²
Line ·06
$417/ft²
Line ·07
$416/ft²
Line ·01
$415/ft²
Line ·08
$413/ft²
Line ·02
$410/ft²
Line ·04
$363/ft²
Line ·05
$311/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.92%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.17%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.12.8 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.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.25%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$838,476
Median tax billThe middle annual property tax bill among the building's units.$8,348
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 108Jun 4, 2025$810,000Unit 102Nov 3, 2022$715,000Unit 202Aug 18, 2022$695,000Unit 206Jun 2, 2021$642,450Unit 101Nov 13, 2019$649,000Unit 202Sep 21, 2018$570,375Unit 106Jan 31, 2018$577,500Unit 204Sep 21, 2015$560,000Unit 208Jun 27, 2014$518,000Unit 302Jun 12, 2013$435,000

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

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.41
20
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
5
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
59
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
92
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
33
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.15 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyMIDDLESEX
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Mat/Raft Foundation (Slab)
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
Natick High SchoolA
High · Grades 9–12 · 1.1 mi
E
Lilja Elementary SchoolB
Elementary · Grades KG–4 · 1.1 mi
M
Wilson Middle SchoolA
Middle · Grades 5–8 · 1.3 mi

District: Natick School District

Neighborhood · ZIP 01760These 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.79
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 100.70

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.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.37,721
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,380 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$133,738
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$174,842
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.

20 South Ave # 101
2 bd · 2 ba · 1,912 ft²
$799K
20 South Ave Unit 102
2 bd · 2 ba · 2,051 ft²
$821K
20 South Ave # 103
2 bd · 1 ba · 1,349 ft²
$729K
20 South Ave # 104
2 bd · 1 ba · 1,378 ft²
$347K
20 South Ave # 105
2 bd · 1 ba · 1,345 ft²
$351K
20 South Ave # 106
2 bd · 2 ba · 1,950 ft²
$815K
20 South Ave # 107
2 bd · 2 ba · 1,933 ft²
$799K
20 South Ave # 108
2 bd · 2 ba · 1,944 ft²
$789K
20 South Ave # 201
2 bd · 2 ba · 1,967 ft²
$817K
20 South Ave # 202
2 bd · 2 ba · 1,937 ft²
$808K
20 South Ave # 203
2 bd · 1 ba · 1,376 ft²
$725K
20 South Ave # 204
2 bd · 2 ba · 1,941 ft²
$808K
20 South Ave # 205
2 bd · 1 ba · 1,377 ft²
$346K
20 South Ave # 206
2 bd · 2 ba · 1,942 ft²
$806K
20 South Ave # 207
2 bd · 2 ba · 1,961 ft²
$815K
20 South Ave # 208
2 bd · 2 ba · 1,943 ft²
$809K
20 South Ave # 301
2 bd · 2 ba · 1,969 ft²
$812K
20 South Ave # 302
2 bd · 2 ba · 1,937 ft²
$800K
20 South Ave # 303
2 bd · 2 ba · 1,595 ft²
$674K
20 South Ave # 304
2 bd · 2 ba · 1,942 ft²
$815K
20 South Ave # 305
2 bd · 2 ba · 1,602 ft²
$676K
20 South Ave # 306
2 bd · 2 ba · 1,941 ft²
$809K
20 South Ave # 307
2 bd · 2 ba · 1,966 ft²
$824K
20 South Ave # 308
2 bd · 2 ba · 1,941 ft²
$809K

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

About 20 South Ave

How many units are in 20 South Ave, Natick, MA?

20 South Ave, Natick, MA has 24 residential units across 3 floors, built in 2008, according to county assessor records.

What is a unit at 20 South Ave, Natick, MA worth?

The median TopHap Estimate across the 24 units at 20 South Ave, Natick, MA is $807,020. That works out to $416 per square foot. Units run from 1,345 to 2,051 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 20 South Ave, Natick, MA expensive for Natick?

Units at 20 South Ave, Natick, MA carry a median of $416 per square foot, 11% below the Natick median of $467 per square foot.

How often do units sell at 20 South Ave, Natick, MA?

0 units at 20 South Ave, Natick, MA sold in the last 12 months, out of 36 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.

Have units at 20 South Ave, Natick, MA appreciated?

Across 13 repeat sales of the same unit, 20 South Ave, Natick, MA returned a median 3.9% 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 3.9 years.

What floor plans does 20 South Ave, Natick, MA have?

The most common plan at 20 South Ave, Natick, MA is a 2-bedroom of 1,941 square feet, repeated 3 times, with a median estimate of $808,673. TopHap identifies 3 recurring plans in the building.

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Assigned schools

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