Situated on a spacious 0.781-acre lot just two blocks from Proctor Academy and Andover Middle School, this versatile in-town duplex offers strong rental income and incredible potential, including an easy conversion back to a single-family home. The sunlit first-floor owner’s unit spans 1,400 square feet of comfortable, one-floor living designed for effortless entertaining. Highlights include hardwood and laminate flooring, classic tin ceilings, a cozy propane fireplace in the living room, oil forced-hot-water heat, and an expansive 1-bedroom with a large walk-in closet, 1 full bath layout that opens to a covered deck perfect for grilling and relaxing. A private entrance leads to the 1,438-square-foot upper apartment, which features 2 bedrooms with closets—including a safe in the closet of a small bedroom—a kitchen, a living room, a den, a bonus room, an unfinished storage room, original hardwood under carpets, and an efficient propane Monitor heating system paid for by the long-term tenant (currently rented month-to-month for $1,750/month). Washers and dryers are located on the first and second floors. Public water, a private sewer, and an attached two-story barn offering garage parking and generous storage complete this exceptional property.
Situated on a spacious 0.781-acre lot just two blocks from Proctor Academy and Andover Middle School, this versatile in-town duplex offers strong rental income and incredible potential, including an easy conversion back to a single-family home. The sunlit first-floor owner’s unit spans 1,400 square feet of comfortable, one-floor living designed for effortless entertaining. Highlights include hardwood and laminate flooring, classic tin ceilings, a cozy propane fireplace in the living room, oil forced-hot-water heat, and an expansive 1-bedroom with a large walk-in closet, 1 full bath layout that opens to a covered deck perfect for grilling and relaxing. A private entrance leads to the 1,438-square-foot upper apartment, which features 2 bedrooms with closets—including a safe in the closet of a small bedroom—a kitchen, a living room, a den, a bonus room, an unfinished storage room, original hardwood under carpets, and an efficient propane Monitor heating system paid for by the long-term tenant (currently rented month-to-month for $1,750/month). Washers and dryers are located on the first and second floors. Public water, a private sewer, and an attached two-story barn offering garage parking and generous storage complete this exceptional property.
Year
Property tax
Land + Additions
Assessment*
2025
$7,622
$131,700 + $388,600
$520,300
2024
$7,617 (+14.2%)
$131,700 + $388,600
$520,300
2023
$6,672 (+8.3%)
$86,800 + $203,900
$290,700
2022
$6,160 (+1.3%)
$86,800 + $203,900
$290,700
2021
$6,079 (−2.0%)
$86,800 + $203,900
$290,700
2020
$6,204 (−1.4%)
$86,800 + $203,900
$290,700
2019
$6,291 (+20.3%)
$86,800 + $203,900
$290,700
2018
$5,230 (+0.3%)
$68,500 + $159,500
$228,000
2017
$5,212 (+8.0%)
$68,500 + $159,500
$228,000
2016
$4,824 (+6.9%)
$68,500 + $158,400
$226,900
2015
$4,511 (−2.4%)
$68,500 + $158,400
$226,900
2014
$4,624 (−16.1%)
$68,500 + $158,400
$226,900
2013
$5,509
$75,500 + $218,300
$293,800
Public record
Beds
3
Baths
2
Stories
3
Lot width
—
Lot depth
—
Lot size
0.78 Acres
Year renovated
—
Finished Sq. Ft.
2,812
Unfinished Sq. Ft.
—
Total Sq. Ft.
2,812
Year built
1880
Style
Other
County
Merrimack County
APN
555944
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 5, 2026.
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
8 days above 92° expected this year, 18 days in 30 years
3/10 Wind Factor
7% chance of strong winds in next 30 years
1/10 Air Factor
0 unhealthy days expected this year, 0 days in 30 years
Provided by First Street
Historical weather
Andover, NH • 01810
Average low and high temperatures (°F)
27
11
30
12
44
25
56
35
65
46
77
55
82
59
80
53
74
48
61
38
46
30
32
16
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
Try the sun simulator tool to see how light moves across the property at different times of day and year.
Provided by Shadowmap
Redfin Estimate for 20 Lawrence St
$547,906
$1,094 under list price of $549K
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $430K to $611K.