20 Martine Cottage Rd is a 2,328 square foot house on a 2.35 acre lot with 2 bedrooms and 2.5 bathrooms. Based on Redfin's Portsmouth data, we estimate the home's value is $1,885,323.
Single-familyProperty Type
1974Year Built
2.35 acresLot Size
$810Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,885,323
$59K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 72.3% higher than the average sale price ($1.09M) 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
$18,079 (+3.1%)
$898,800 + $671,900
$1,570,700
2024
$17,531 (+34.2%)
$898,800 + $669,300
$1,568,100
2023
$13,060 (+6.1%)
$398,600 + $411,100
$809,700
2022
$12,307 (+1.1%)
$398,600 + $411,100
$809,700
2021
$12,170 (+2.2%)
$398,600 + $411,100
$809,700
2020
$11,903 (−0.9%)
$398,600 + $411,100
$809,700
2019
$12,016 (+2.5%)
$398,600 + $410,000
$808,600
2018
$11,718 (+3.0%)
$362,200 + $377,600
$739,800
2017
$11,378 (+5.8%)
$362,200 + $377,600
$739,800
2016
$10,754 (+1.5%)
$309,000 + $322,100
$631,100
2015
$10,596
$309,000 + $322,100
$631,100
Tax history for 20 Martine Cottage Rd
Year
Property tax
Land + Additions
Assessment*
2025
$18,079 (+3.1%)
$898,800 + $671,900
$1,570,700
2024
$17,531 (+34.2%)
$898,800 + $669,300
$1,568,100
2023
$13,060 (+6.1%)
$398,600 + $411,100
$809,700
2022
$12,307 (+1.1%)
$398,600 + $411,100
$809,700
2021
$12,170 (+2.2%)
$398,600 + $411,100
$809,700
2020
$11,903 (−0.9%)
$398,600 + $411,100
$809,700
2019
$12,016 (+2.5%)
$398,600 + $410,000
$808,600
2018
$11,718 (+3.0%)
$362,200 + $377,600
$739,800
2017
$11,378 (+5.8%)
$362,200 + $377,600
$739,800
2016
$10,754 (+1.5%)
$309,000 + $322,100
$631,100
2015
$10,596
$309,000 + $322,100
$631,100
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Jan 31, 2026 • Final
Electrical permit: residential
Replace existing indoor heating and air conditioning units and install one additional indoor unit.
Electrical
Jan 31, 2026 • Final
Mechanical permit (residential and commercial)
Replace two existing indoor units and add one new indoor unit for a multi-split system.
HVAC
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: 1,152
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: 7
Exterior
Exterior Information
Physical Condition: Good
Building Style Type: Contemporary
Exterior Wall: Wood Siding/Shingle
Roof Shape Type: Gable
Property Information
Living Sq. Ft: 2,328
Gross Sq. Ft: 5,376
Ground Floor Sq. Ft: 1,152
# of Units: 1
# of Stories: 2
Parking & Garage Information
Parking Type: Attached Garage
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 102,366
Municipality Name: PORTSMOUTH CITY
Acres: 2.35
Zoning Code: R
State Use Description: 1-FAMILY RESIDENCE
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 2
Baths: 2.5
Sq. Ft.: 2,328
Stories: 2.0
Lot Size: 2.35 acres
Style: Single Family Residential
Year Built: 1974
Year Renovated: —
County: Rockingham County
APN: 680491
Home facts updated by county records on May 14, 2026
Around this home
Schools
Little Harbour School
Public K-5 • Assigned • 0.7mi
10/10
Portsmouth Middle School
Public 6-8 • Assigned • 1.2mi
8/10
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
4/10 Heat Factor
6 days above 92° expected this year, 13 days in 30 years
6/10 Wind Factor
68% chance of strong winds in next 30 years
2/10 Air Factor
1 unhealthy days expected this year, 2 days in 30 years
Provided by First Street
Historical weather
Portsmouth, NH • 03801
Average low and high temperatures (°F)
32
19
35
19
47
31
54
39
64
49
76
59
81
64
77
59
72
55
62
46
51
37
37
24
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 8.9 hours in
June and 4.4 hours in December, placing it below the
U.S. average for solar exposure.
8.9 hrs
4.4 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.79M – $2.17M
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