Skip to content
Skip to content
TopHapOpen in map
Duplex (2 Units, Any Combination)Residential
Last sold for $124,000 on Apr 22, 2002

321 SOUTHERN AVE

AMBLER, PA 19002
3,950 ft²
Lot SizeThe size of the land the home sits on, from county records.
1915
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
Built 19962 units1,344–1,344 ft²
$785K
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.
$392K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$292
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-3.9%vs the Ambler ZIP median sale $/ft² ($304)

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
200220152022

3 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.

3 bed
2 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.
3 bd · 1.5 ba · 1,344 ft²
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.50%
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.16.9 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.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.41%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$389,568
Median tax billThe middle annual property tax bill among the building's units.$4,023
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 BJan 20, 2022$333,000Unit BNov 24, 2015$252,500BuildingApr 22, 2002$124,000

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.$4,099 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$98,960 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$98,960
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$98,960

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountyMONTGOMERY
Lot (acres)The size of the land the home sits on, from county records.0.09
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.No Garage
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 96 ft²

Transaction History(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

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

M
Wissahickon Middle SchoolA-
Middle · Grades 6–8 · 1.4 mi
H
Wissahickon High SchoolA+
High · Grades 9–12 · 1.6 mi
E
Shady Grove Elementary SchoolA
Elementary · Grades KG–5 · 2.0 mi

District: Wissahickon School District

Neighborhood · ZIP 19002These 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.60
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.81

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.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.36,861
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,678 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$137,744
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$171,064
Average tempThe average temperature here across a full year.53°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.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.

321 Southern Ave
3 bd · 1 ba · 1,296 ft²
$363K
321 Southern Ave
3 bd · 1.5 ba · 1,344 ft²
$410K
321 Southern Ave # B
3 bd · 1.5 ba · 1,344 ft²
$375K

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

About 321 Southern Ave

How many units are in 321 Southern Ave, Ambler, PA?

321 Southern Ave, Ambler, PA has 2 residential units across built in 1996, according to county assessor records.

What is a unit at 321 Southern Ave, Ambler, PA worth?

The median TopHap Estimate across the 2 units at 321 Southern Ave, Ambler, PA is $392,496. That works out to $292 per square foot. Units run from 1,344 to 1,344 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 321 Southern Ave, Ambler, PA expensive for Ambler?

Units at 321 Southern Ave, Ambler, PA carry a median of $292 per square foot, 4% below the Ambler median of $304 per square foot.

How often do units sell at 321 Southern Ave, Ambler, PA?

0 units at 321 Southern Ave, Ambler, PA sold in the last 12 months, out of 3 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.

What floor plans does 321 Southern Ave, Ambler, PA have?

The most common plan at 321 Southern Ave, Ambler, PA is a 3-bedroom of 1,344 square feet, repeated 2 times, with a median estimate of $392,496. TopHap identifies 1 recurring plans in the building.

More homes on Southern Ave

Closest homes

More homes in Ambler 19002

Assigned schools

Explore the area

See this home in context

Open 321 Southern Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map