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Single Family ResidenceResidential
$1,280,786$158 / 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 83How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

29 UNION ST

MERRIMAC, MA 01860
8
Beds
4 / 2
Baths
8,100 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.
4.43 ac
Lot SizeThe size of the land the home sits on, from county records.
1968
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
15
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1.3M
$1.1M low$1.5M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,167 (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.$842,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$297,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$545,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$871,340

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.46 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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyESSEX
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1969
Lot (acres)The size of the land the home sits on, from county records.4.42
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.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(10)

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.

E
Dr. Frederick N. Sweetsir Elementary School
Elementary · Grades PK–2 · 1.0 mi
H
Pentucket Regional High SchoolB+
High · Grades 9–12 · 3.0 mi
M
Pentucket Regional Middle SchoolC+
Middle · Grades 7–8 · 3.2 mi

District: Pentucket School District

Neighborhood · ZIP 01860These 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.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.95

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.6,895
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.759 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,610
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$115,088
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%

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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

29 Union St 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.

  • Among the most valuable homes in Merrimac 01860
  • Among the lowest price per square foot in Merrimac 01860
  • Among the largest homes in Merrimac 01860
  • Has a bigger lot than 96% of homes in Merrimac 01860

What homes are worth in Merrimac 01860

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

This home
$369K$1.2M

This home is worth more than almost all homes in Merrimac 01860.

How it measures up in Merrimac 01860

The dot is this home. The mark in the middle is the typical home in Merrimac 01860.

Estimated value$1,280,786
CheaperTypical $655,155Pricier

Pricier than almost all homes nearby

Price per ft²$158
CheaperTypical $345Pricier

Cheaper than almost all homes nearby

Living area8,100 ft²
SmallerTypical 1,927 ft²Bigger

Bigger than almost all homes nearby

Lot size4.43 ac
SmallerTypical 0.53 acBigger

Bigger than 96% of homes nearby

Year built1968
OlderTypical 1984Newer

Newer than 42% of homes nearby

How 29 Union St ranks against every home in each area.
MeasureThis homeMerrimac 01860Essex County
Estimated valuepricier than$1,280,786almost all homes91% of homes
Price per ft²pricier than$158almost no homesalmost no homes
Living areabigger than8,100 ft²almost all homesalmost all homes
Lot sizebigger than4.43 ac96% of homes96% of homes
Year builtnewer than196842% of homes62% of homes

About 29 Union St

How much is 29 Union St, Merrimac, MA worth?

The TopHap Estimate for 29 Union St, Merrimac, MA is $1,280,786 as of Aug 30, 2026. The likely range is $1,066,855 to $1,494,717. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 29 Union St, Merrimac, MA last sell?

29 Union St, Merrimac, MA last sold on Jun 6, 2017, according to the county's recorded deed.

How big is 29 Union St, Merrimac, MA?

29 Union St, Merrimac, MA has 8 bedrooms, 4 bathrooms, 8,100 square feet of living space and a 4.42-acre lot.

When was 29 Union St, Merrimac, MA built?

29 Union St, Merrimac, MA was built in 1968, making it 58 years old. It is a ranch home. The building has 1 story.

What schools serve 29 Union St, Merrimac, MA?

29 Union St, Merrimac, MA is assigned to Dr. Frederick N. Sweetsir Elementary School (elementary); Pentucket Regional High School (high), rated B+; Pentucket Regional Middle School (middle), rated C+. All sit in Pentucket School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 29 Union St, Merrimac, MA compare to other homes in Merrimac 01860?

Among the 2,134 homes in Merrimac 01860, it is worth more than almost all of them ($1,280,786 against a typical $655,155), its price per square foot is higher than almost none of them ($158 against a typical $345), it is bigger than almost all of them (8,100 ft² against a typical 1,927 ft²), its lot is bigger than 96% of them (4.43 ac against a typical 0.53 ac) and it is newer than 42% of them (1968 against a typical 1984). Measured against all of Essex County, it is worth more than 91% 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 29 Union St, Merrimac, MA?

The 2025 property tax bill for 29 Union St, Merrimac, MA was $11,167. The county assessed it at $842,800.

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