21 Parkhurst Rd is a 5,056 square foot house on a 4.51 acre lot with 4 bedrooms and 2.5 bathrooms. Based on Redfin's Merrimack data, we estimate the home's value is $914,731.
Single-familyProperty Type
1999Year Built
4.51 acresLot Size
$181Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$914,731
$5,000 since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 7.5% lower than the average sale price ($989K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$15,565 (+6.9%)
$237,000 + $467,000
$704,000
2024
$14,566 (+6.4%)
$237,000 + $467,000
$704,000
2023
$13,693 (+11.9%)
$237,000 + $467,000
$704,000
2022
$12,236 (+1.2%)
$237,000 + $467,000
$704,000
2021
$12,088 (−7.1%)
$237,000 + $467,000
$704,000
2020
$13,007 (−0.3%)
$171,000 + $369,600
$540,600
2019
$13,045
$171,000 + $369,600
$540,600
2018
$13,039 (+4.4%)
$171,000 + $369,600
$540,600
2017
$12,491 (+2.5%)
$171,000 + $363,500
$534,500
2016
$12,181 (+1.1%)
$171,000 + $363,500
$534,500
2015
$12,051 (+3.4%)
$160,000 + $327,500
$487,500
2013
$11,656
$160,000 + $327,500
$487,500
Tax history for 21 Parkhurst Rd
Year
Property tax
Land + Additions
Assessment*
2025
$15,565 (+6.9%)
$237,000 + $467,000
$704,000
2024
$14,566 (+6.4%)
$237,000 + $467,000
$704,000
2023
$13,693 (+11.9%)
$237,000 + $467,000
$704,000
2022
$12,236 (+1.2%)
$237,000 + $467,000
$704,000
2021
$12,088 (−7.1%)
$237,000 + $467,000
$704,000
2020
$13,007 (−0.3%)
$171,000 + $369,600
$540,600
2019
$13,045
$171,000 + $369,600
$540,600
2018
$13,039 (+4.4%)
$171,000 + $369,600
$540,600
2017
$12,491 (+2.5%)
$171,000 + $363,500
$534,500
2016
$12,181 (+1.1%)
$171,000 + $363,500
$534,500
2015
$12,051 (+3.4%)
$160,000 + $327,500
$487,500
2013
$11,656
$160,000 + $327,500
$487,500
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Aug 19, 2026 • Active
Building permit application [merrimack, nh][2025
Remove all existing fixtures, cabinets, tile flooring, and the tile shower down to the subfloor and studs. Perform plumbing work including cutting, capping, and relocating drains and supplies to accommodate new fixtures. Perform electrical work including installing a new circuit for a heated floor, new lighting, and an exhaust fan. Install thermal fiber insulation on the exterior wall and new moisture-resistant drywall. Install a new tile floor, tile shower, vanity cabinets, toilet, and fixtures.
Bathroom
Electrical
Plumbing
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Basement Information
Basement Sq. Ft: 1,642
Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 1
Heating & Cooling
Heating Type: Forced Hot Water
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 10
Exterior
Exterior Information
Physical Condition: Good
Building Style Type: Colonial
Construction Type: Frame
Exterior Wall: Vinyl
Roof Shape Type: Gable
Pool Information
Has Pool
Property Information
Subdivision Name: PARKHURST FARMS
Living Sq. Ft: 5,056
Gross Sq. Ft: 9,350
Ground Floor Sq. Ft: 1,642
# of Units: 1
# of Stories: 3
Parking & Garage Information
Parking Type: Attached Garage
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 196,456
Legal Lot Number: 6A-5
Municipality Name: MERRIMACK TOWN
Acres: 4.51
Zoning Code: RESIDE
State Use Description: 1-FAMILY RESIDENCE
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 4
Baths: 2.5
Sq. Ft.: 5,056
Stories: 3.0
Lot Size: 4.51 acres
Style: Single Family Residential
Year Built: 1999
Year Renovated: —
County: Hillsborough County
APN: 619927
Home facts updated by county records on Aug 5, 2026
Around this home
Schools
Reeds Ferry School
Public PreK-4 • Assigned • 3.8mi
9/10
Merrimack Middle School
Public 7-8 • Assigned • 1.9mi
6/10
Merrimack High School
Public 9-12 • Assigned • 4.1mi
4/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
3/10 Heat Factor
7 days above 95° expected this year, 16 days in 30 years
4/10 Wind Factor
22% chance of strong winds in next 30 years
2/10 Air Factor
0 unhealthy days expected this year, 1 days in 30 years
Provided by First Street
Historical weather
Merrimack, NH • 03054
Average low and high temperatures (°F)
32
15
35
17
50
29
60
38
69
48
81
59
85
63
82
57
76
52
64
42
51
33
37
21
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 9 hours in
June and 4.3 hours in December, placing it below the
U.S. average for solar exposure.
9 hrs
4.3 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$869,000 – $1.05M
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