Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$516,961$456 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $141,000 on Nov 3, 1997

19 ROSEMONT AVE

WALTHAM, MA 02451
4
Beds
1
Baths
1,134 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
3,306 ft²
Lot SizeThe size of the land the home sits on, from county records.
1925
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$517K
$485K low$549K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$141,000 · Nov 3, 1997
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$215,761
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$172,609
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.55%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$301,200
NEWREZ LLC · R · recorded Mar 8, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,053 (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.$514,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$321,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$192,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$546,060

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Bungalow
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.08
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.Hot Water
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.

M
John F. Kennedy Middle SchoolA-
Middle · Grades 6–8 · 0.5 mi
E
Douglas MacArthur Elementary SchoolA
Elementary · Grades KG–5 · 0.5 mi
H
Waltham Sr High SchoolC
High · Grades 9–12 · 0.7 mi

District: Waltham School District

Neighborhood · ZIP 02451These 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.84
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.76

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.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.7%
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.16,966
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,036 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$126,384
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$156,140
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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

How this home compares

19 Rosemont Ave measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 92% of homes in Waltham 02451
  • Smaller than 86% of homes in Piety Corner
  • Has a smaller lot than 95% of homes in Middlesex County
  • Older than 89% of homes in Piety Corner

What homes are worth in Waltham 02451

Each bar is how many homes fall in that price range. The marker is this home.

This home
$324K$1.5M

This home is worth more than 8% of homes in Waltham 02451.

How it measures up in Waltham 02451

The dot is this home. The mark in the middle is the typical home in Waltham 02451.

Estimated value$516,961
CheaperTypical $780,267Pricier

Pricier than 8% of homes nearby

Price per ft²$456
CheaperTypical $467Pricier

Pricier than 46% of homes nearby

Living area1,134 ft²
SmallerTypical 1,778 ft²Bigger

Bigger than 17% of homes nearby

Lot size3,306 ft²
SmallerTypical 0.18 acBigger

Bigger than 7% of homes nearby

Year built1925
OlderTypical 1957Newer

Newer than 23% of homes nearby

How 19 Rosemont Ave ranks against every home in each area.
MeasureThis homePiety CornerWaltham 02451Middlesex County
Estimated valuepricier than$516,9619% of homes8% of homes16% of homes
Price per ft²pricier than$45650% of homes46% of homes48% of homes
Living areabigger than1,134 ft²14% of homes17% of homes16% of homes
Lot sizebigger than3,306 ft²9% of homes7% of homes5% of homes
Year builtnewer than192511% of homes23% of homes28% of homes

About 19 Rosemont Ave

How much is 19 Rosemont Ave, Waltham, MA worth?

The TopHap Estimate for 19 Rosemont Ave, Waltham, MA is $516,961 as of Jul 14, 2026. The likely range is $485,413 to $548,509. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 19 Rosemont Ave, Waltham, MA last sell?

19 Rosemont Ave, Waltham, MA last sold on Nov 3, 1997 for $141,000, according to the county's recorded deed.

How big is 19 Rosemont Ave, Waltham, MA?

19 Rosemont Ave, Waltham, MA has 4 bedrooms, 1 bathrooms, 1,134 square feet of living space and a 0.08-acre lot.

When was 19 Rosemont Ave, Waltham, MA built?

19 Rosemont Ave, Waltham, MA was built in 1925, making it 101 years old. It is a bungalow home. The building has 2 stories.

What schools serve 19 Rosemont Ave, Waltham, MA?

19 Rosemont Ave, Waltham, MA is assigned to John F. Kennedy Middle School (middle), rated A-; Douglas MacArthur Elementary School (elementary), rated A; Waltham Sr High School (high), rated C. All sit in Waltham School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 19 Rosemont Ave, Waltham, MA compare to other homes in Waltham 02451?

Among the 4,967 homes in Waltham 02451, it is worth more than 8% of them ($516,961 against a typical $780,267), its price per square foot is higher than 46% of them ($456 against a typical $467), it is bigger than 17% of them (1,134 ft² against a typical 1,778 ft²), its lot is bigger than 7% of them (3,306 ft² against a typical 0.18 ac) and it is newer than 23% of them (1925 against a typical 1957). Measured against all of Middlesex County, it is worth more than 16% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 19 Rosemont Ave, Waltham, MA?

The 2025 property tax bill for 19 Rosemont Ave, Waltham, MA was $5,053. The county assessed it at $514,600.

More homes on Rosemont Ave

Closest homes

More homes in Waltham 02451

Assigned schools

Explore the area

See this home in context

Open 19 Rosemont 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